// @(#)root/gl:$Id: TGLUtil.cxx 28818 2009-06-04 22:25:39Z rdm $ // Author: Richard Maunder 25/05/2005 /************************************************************************* * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ #include <algorithm> #include <string> #include <map> #include "THLimitsFinder.h" #include "TVirtualPad.h" #include "TVirtualX.h" #include "Riostream.h" #include "TStyle.h" #include "TGaxis.h" #include "TColor.h" #include "TError.h" #include "TH1.h" #include "TMath.h" #include "TROOT.h" #include "TClass.h" #include "TGLBoundingBox.h" #include "TGLCamera.h" #include "TGLPlotPainter.h" #include "TGLIncludes.h" #include "TGLQuadric.h" #include "TGLUtil.h" ////////////////////////////////////////////////////////////////////////// // // // TGLVertex3 // // // // 3 component (x/y/z) vertex class // // // // This is part of collection of simple utility classes for GL only in // // TGLUtil.h/cxx. These provide const and non-const accessors Arr() & // // CArr() to a GL compatible internal field - so can be used directly // // with OpenGL C API calls - which TVector3 etc cannot (easily). // // They are not intended to be fully featured just provide minimum // // required. // ////////////////////////////////////////////////////////////////////////// ClassImp(TGLVertex3); //______________________________________________________________________________ TGLVertex3::TGLVertex3() { // Construct a default (0.0, 0.0, 0.0) vertex Fill(0.0); } //______________________________________________________________________________ TGLVertex3::TGLVertex3(Double_t x, Double_t y, Double_t z) { // Construct a vertex with components (x,y,z) Set(x,y,z); } //______________________________________________________________________________ TGLVertex3::TGLVertex3(Double_t* v) { // Construct a vertex with components (v[0], v[1], v[2]) Set(v[0], v[1], v[2]); } //______________________________________________________________________________ TGLVertex3::TGLVertex3(const TGLVertex3 & other) { // Construct a vertex from 'other' Set(other); } //______________________________________________________________________________ TGLVertex3::~TGLVertex3() { // Destroy vertex object } //______________________________________________________________________________ void TGLVertex3::Shift(TGLVector3 & shift) { // Offset a vertex by vector 'shift' fVals[0] += shift[0]; fVals[1] += shift[1]; fVals[2] += shift[2]; } //______________________________________________________________________________ void TGLVertex3::Shift(Double_t xDelta, Double_t yDelta, Double_t zDelta) { // Offset a vertex by components (xDelta, yDelta, zDelta) fVals[0] += xDelta; fVals[1] += yDelta; fVals[2] += zDelta; } //______________________________________________________________________________ void TGLVertex3::Minimum(const TGLVertex3 & other) { fVals[0] = TMath::Min(fVals[0], other.fVals[0]); fVals[1] = TMath::Min(fVals[1], other.fVals[1]); fVals[2] = TMath::Min(fVals[2], other.fVals[2]); } //______________________________________________________________________________ void TGLVertex3::Maximum(const TGLVertex3 & other) { fVals[0] = TMath::Max(fVals[0], other.fVals[0]); fVals[1] = TMath::Max(fVals[1], other.fVals[1]); fVals[2] = TMath::Max(fVals[2], other.fVals[2]); } //______________________________________________________________________________ void TGLVertex3::Dump() const { // Output vertex component values to std::cout std::cout << "(" << fVals[0] << "," << fVals[1] << "," << fVals[2] << ")" << std::endl; } ////////////////////////////////////////////////////////////////////////// // // // TGLVector3 // // // // 3 component (x/y/z) vector class // // // // This is part of collection of utility classes for GL in TGLUtil.h/cxx// // These provide const and non-const accessors Arr() / CArr() to a GL // // compatible internal field - so can be used directly with OpenGL C API// // calls. They are not intended to be fully featured just provide // // minimum required. // ////////////////////////////////////////////////////////////////////////// ClassImp(TGLVector3); //______________________________________________________________________________ TGLVector3::TGLVector3() : TGLVertex3() { // Construct a default (0.0, 0.0, 0.0) vector } //______________________________________________________________________________ TGLVector3::TGLVector3(Double_t x, Double_t y, Double_t z) : TGLVertex3(x, y, z) { // Construct a vector with components (x,y,z) } //______________________________________________________________________________ TGLVector3::TGLVector3(const TGLVector3 & other) : TGLVertex3(other.fVals[0], other.fVals[1], other.fVals[2]) { // Construct a vector from components of 'other' } //______________________________________________________________________________ TGLVector3::TGLVector3(const Double_t *src) : TGLVertex3(src[0], src[1], src[2]) { // Construct a vector with components (src[0], src[1], src[2]) } //______________________________________________________________________________ TGLVector3::~TGLVector3() { // Destroy vector object } ////////////////////////////////////////////////////////////////////////// // // // TGLLine3 // // // // 3D space, fixed length, line class, with direction / length 'vector',// // passing through point 'vertex'. Just wraps a TGLVector3 / TGLVertex3 // // pair. // ////////////////////////////////////////////////////////////////////////// ClassImp(TGLLine3); //______________________________________________________________________________ TGLLine3::TGLLine3(const TGLVertex3 & start, const TGLVertex3 & end) : fVertex(start), fVector(end - start) { // Construct 3D line running from 'start' to 'end' } //______________________________________________________________________________ TGLLine3::TGLLine3(const TGLVertex3 & start, const TGLVector3 & vect) : fVertex(start), fVector(vect) { // Construct 3D line running from 'start', magnitude 'vect' } //______________________________________________________________________________ TGLLine3::~TGLLine3() { // Destroy 3D line object } //______________________________________________________________________________ void TGLLine3::Set(const TGLVertex3 & start, const TGLVertex3 & end) { // Set 3D line running from 'start' to 'end' fVertex = start; fVector = end - start; } //______________________________________________________________________________ void TGLLine3::Set(const TGLVertex3 & start, const TGLVector3 & vect) { // Set 3D line running from start, magnitude 'vect' fVertex = start; fVector = vect; } //______________________________________________________________________________ void TGLLine3::Draw() const { // Draw line in current basic GL color. Assume we are in the correct reference // frame glBegin(GL_LINE_LOOP); glVertex3dv(fVertex.CArr()); glVertex3dv(End().CArr()); glEnd(); } ////////////////////////////////////////////////////////////////////////// // // // TGLRect // // // // Viewport (pixel base) 2D rectangle class // ////////////////////////////////////////////////////////////////////////// ClassImp(TGLRect); //______________________________________________________________________________ TGLRect::TGLRect() : fX(0), fY(0), fWidth(0), fHeight(0) { // Construct empty rect object, corner (0,0), width/height 0 } //______________________________________________________________________________ TGLRect::TGLRect(Int_t x, Int_t y, Int_t width, Int_t height) : fX(x), fY(y), fWidth(width), fHeight(height) { // Construct rect object, corner (x,y), dimensions 'width', 'height' } //______________________________________________________________________________ TGLRect::TGLRect(Int_t x, Int_t y, UInt_t width, UInt_t height) : fX(x), fY(y), fWidth(width), fHeight(height) { // Construct rect object, corner (x,y), dimensions 'width', 'height' } //______________________________________________________________________________ TGLRect::~TGLRect() { // Destroy rect object } //______________________________________________________________________________ EOverlap TGLRect::Overlap(const TGLRect & other) const { // Return overlap result (kInside, kOutside, kPartial) of this // rect with 'other' if ((fX <= other.fX) && (fX + fWidth >= other.fX + other.fWidth) && (fY <= other.fY) && (fY +fHeight >= other.fY + other.fHeight)) { return kInside; } else if ((fX >= other.fX + static_cast<Int_t>(other.fWidth)) || (fX + static_cast<Int_t>(fWidth) <= other.fX) || (fY >= other.fY + static_cast<Int_t>(other.fHeight)) || (fY + static_cast<Int_t>(fHeight) <= other.fY)) { return kOutside; } else { return kPartial; } } ////////////////////////////////////////////////////////////////////////// // // // TGLPlane // // // // 3D plane class - of format Ax + By + Cz + D = 0 // // // // This is part of collection of simple utility classes for GL only in // // TGLUtil.h/cxx. These provide const and non-const accessors Arr() & // // CArr() to a GL compatible internal field - so can be used directly // // with OpenGL C API calls - which TVector3 etc cannot (easily). // // They are not intended to be fully featured just provide minimum // // required. // ////////////////////////////////////////////////////////////////////////// ClassImp(TGLPlane); //______________________________________________________________________________ TGLPlane::TGLPlane() { // Construct a default plane of x + y + z = 0 Set(1.0, 1.0, 1.0, 0.0); } //______________________________________________________________________________ TGLPlane::TGLPlane(const TGLPlane & other) { // Construct plane from 'other' Set(other); } //______________________________________________________________________________ TGLPlane::TGLPlane(Double_t a, Double_t b, Double_t c, Double_t d) { // Construct plane with equation a.x + b.y + c.z + d = 0 // with optional normalisation Set(a, b, c, d); } //______________________________________________________________________________ TGLPlane::TGLPlane(Double_t eq[4]) { // Construct plane with equation eq[0].x + eq[1].y + eq[2].z + eq[3] = 0 // with optional normalisation Set(eq); } //______________________________________________________________________________ TGLPlane::TGLPlane(const TGLVertex3 & p1, const TGLVertex3 & p2, const TGLVertex3 & p3) { // Construct plane passing through 3 supplied points // with optional normalisation Set(p1, p2, p3); } //______________________________________________________________________________ TGLPlane::TGLPlane(const TGLVector3 & v, const TGLVertex3 & p) { // Construct plane with supplied normal vector, passing through point // with optional normalisation Set(v, p); } //______________________________________________________________________________ TGLPlane::~TGLPlane() { // Destroy plane object } //______________________________________________________________________________ void TGLPlane::Normalise() { // Normalise the plane. Double_t mag = sqrt(fVals[0]*fVals[0] + fVals[1]*fVals[1] + fVals[2]*fVals[2]); if (mag == 0.0 ) { Error("TGLPlane::Normalise", "trying to normalise plane with zero magnitude normal"); return; } mag = 1.0 / mag; fVals[0] *= mag; fVals[1] *= mag; fVals[2] *= mag; fVals[3] *= mag; } //______________________________________________________________________________ void TGLPlane::Dump() const { // Output plane equation to std::out std::cout.precision(6); std::cout << "Plane : " << fVals[0] << "x + " << fVals[1] << "y + " << fVals[2] << "z + " << fVals[3] << std::endl; } //______________________________________________________________________________ void TGLPlane::Set(const TGLPlane & other) { // Assign from other. fVals[0] = other.fVals[0]; fVals[1] = other.fVals[1]; fVals[2] = other.fVals[2]; fVals[3] = other.fVals[3]; } //______________________________________________________________________________ void TGLPlane::Set(Double_t a, Double_t b, Double_t c, Double_t d) { // Set by values. fVals[0] = a; fVals[1] = b; fVals[2] = c; fVals[3] = d; Normalise(); } //______________________________________________________________________________ void TGLPlane::Set(Double_t eq[4]) { // Set by array values. fVals[0] = eq[0]; fVals[1] = eq[1]; fVals[2] = eq[2]; fVals[3] = eq[3]; Normalise(); } //______________________________________________________________________________ void TGLPlane::Set(const TGLVector3 & norm, const TGLVertex3 & point) { // Set plane from a normal vector and in-plane point pair fVals[0] = norm[0]; fVals[1] = norm[1]; fVals[2] = norm[2]; fVals[3] = -(fVals[0]*point[0] + fVals[1]*point[1] + fVals[2]*point[2]); Normalise(); } //______________________________________________________________________________ void TGLPlane::Set(const TGLVertex3 & p1, const TGLVertex3 & p2, const TGLVertex3 & p3) { // Set plane by three points. TGLVector3 norm = Cross(p2 - p1, p3 - p1); Set(norm, p2); } //______________________________________________________________________________ void TGLPlane::Negate() { // Negate the plane. fVals[0] = -fVals[0]; fVals[1] = -fVals[1]; fVals[2] = -fVals[2]; fVals[3] = -fVals[3]; } //______________________________________________________________________________ Double_t TGLPlane::DistanceTo(const TGLVertex3 & vertex) const { // Distance from plane to vertex. return (fVals[0]*vertex[0] + fVals[1]*vertex[1] + fVals[2]*vertex[2] + fVals[3]); } //______________________________________________________________________________ TGLVertex3 TGLPlane::NearestOn(const TGLVertex3 & point) const { // Return nearest point on plane. TGLVector3 o = Norm() * (Dot(Norm(), TGLVector3(point[0], point[1], point[2])) + D() / Dot(Norm(), Norm())); TGLVertex3 v = point - o; return v; } // Some free functions for plane intersections //______________________________________________________________________________ std::pair<Bool_t, TGLLine3> Intersection(const TGLPlane & p1, const TGLPlane & p2) { // Find 3D line interestion of this plane with 'other'. Returns a std::pair // // first (Bool_t) second (TGLLine3) // kTRUE - planes intersect intersection line between planes // kFALSE - no intersect (parallel) undefined TGLVector3 lineDir = Cross(p1.Norm(), p2.Norm()); if (lineDir.Mag() == 0.0) { return std::make_pair(kFALSE, TGLLine3(TGLVertex3(0.0, 0.0, 0.0), TGLVector3(0.0, 0.0, 0.0))); } TGLVertex3 linePoint = Cross((p1.Norm()*p2.D() - p2.Norm()*p1.D()), lineDir) / Dot(lineDir, lineDir); return std::make_pair(kTRUE, TGLLine3(linePoint, lineDir)); } //______________________________________________________________________________ std::pair<Bool_t, TGLVertex3> Intersection(const TGLPlane & p1, const TGLPlane & p2, const TGLPlane & p3) { Double_t denom = Dot(p1.Norm(), Cross(p2.Norm(), p3.Norm())); if (denom == 0.0) { return std::make_pair(kFALSE, TGLVertex3(0.0, 0.0, 0.0)); } TGLVector3 vect = ((Cross(p2.Norm(),p3.Norm())* -p1.D()) - (Cross(p3.Norm(),p1.Norm())*p2.D()) - (Cross(p1.Norm(),p2.Norm())*p3.D())) / denom; TGLVertex3 interVert(vect.X(), vect.Y(), vect.Z()); return std::make_pair(kTRUE, interVert); } //______________________________________________________________________________ std::pair<Bool_t, TGLVertex3> Intersection(const TGLPlane & plane, const TGLLine3 & line, Bool_t extend) { // Find intersection of 3D space 'line' with this plane. If 'extend' is kTRUE // then line extents can be extended (infinite length) to find intersection. // If 'extend' is kFALSE the fixed extents of line is respected. // // The return a std::pair // // first (Bool_t) second (TGLVertex3) // kTRUE - line/plane intersect intersection vertex on plane // kFALSE - no line/plane intersect undefined // // If intersection is not found (first == kFALSE) & 'extend' was kTRUE (infinite line) // this implies line and plane are parallel. If 'extend' was kFALSE, then // either line parallel or insuffient length. Double_t denom = -(plane.A()*line.Vector().X() + plane.B()*line.Vector().Y() + plane.C()*line.Vector().Z()); if (denom == 0.0) { return std::make_pair(kFALSE, TGLVertex3(0.0, 0.0, 0.0)); } Double_t num = plane.A()*line.Start().X() + plane.B()*line.Start().Y() + plane.C()*line.Start().Z() + plane.D(); Double_t factor = num/denom; // If not extending (projecting) line is length from start enough to reach plane? if (!extend && (factor < 0.0 || factor > 1.0)) { return std::make_pair(kFALSE, TGLVertex3(0.0, 0.0, 0.0)); } TGLVector3 toPlane = line.Vector() * factor; return std::make_pair(kTRUE, line.Start() + toPlane); } ////////////////////////////////////////////////////////////////////////// // // // TGLMatrix // // // // 16 component (4x4) transform matrix - column MAJOR as per GL. // // Provides limited support for adjusting the translation, scale and // // rotation components. // // // // This is part of collection of simple utility classes for GL only in // // TGLUtil.h/cxx. These provide const and non-const accessors Arr() & // // CArr() to a GL compatible internal field - so can be used directly // // with OpenGL C API calls - which TVector3 etc cannot (easily). // // They are not intended to be fully featured just provide minimum // // required. // ////////////////////////////////////////////////////////////////////////// ClassImp(TGLMatrix); //______________________________________________________________________________ TGLMatrix::TGLMatrix() { // Construct default identity matrix: // // 1 0 0 0 // 0 1 0 0 // 0 0 1 0 // 0 0 0 1 SetIdentity(); } //______________________________________________________________________________ TGLMatrix::TGLMatrix(Double_t x, Double_t y, Double_t z) { // Construct matrix with translation components x,y,z: // // 1 0 0 x // 0 1 0 y // 0 0 1 z // 0 0 0 1 SetIdentity(); SetTranslation(x, y, z); } //______________________________________________________________________________ TGLMatrix::TGLMatrix(const TGLVertex3 & translation) { // Construct matrix with translation components x,y,z: // // 1 0 0 translation.X() // 0 1 0 translation.Y() // 0 0 1 translation.Z() // 0 0 0 1 SetIdentity(); SetTranslation(translation); } //______________________________________________________________________________ TGLMatrix::TGLMatrix(const TGLVertex3 & origin, const TGLVector3 & zAxis) { // Construct matrix which when applied puts local origin at // 'origin' and the local Z axis in direction 'z'. Both // 'origin' and 'zAxisVec' are expressed in the parent frame SetIdentity(); TGLVector3 zAxisInt(zAxis); zAxisInt.Normalise(); TGLVector3 arbAxis; if (TMath::Abs(zAxisInt.X()) <= TMath::Abs(zAxisInt.Y()) && TMath::Abs(zAxisInt.X()) <= TMath::Abs(zAxisInt.Z())) { arbAxis.Set(1.0, 0.0, 0.0); } else if (TMath::Abs(zAxisInt.Y()) <= TMath::Abs(zAxisInt.X()) && TMath::Abs(zAxisInt.Y()) <= TMath::Abs(zAxisInt.Z())) { arbAxis.Set(0.0, 1.0, 0.0); } else { arbAxis.Set(0.0, 0.0, 1.0); } Set(origin, zAxis, Cross(zAxisInt, arbAxis)); } //______________________________________________________________________________ TGLMatrix::TGLMatrix(const TGLVertex3 & origin, const TGLVector3 & zAxis, const TGLVector3 & xAxis) { // Construct matrix which when applied puts local origin at // 'origin' and the local Z axis in direction 'z'. Both // 'origin' and 'zAxisVec' are expressed in the parent frame SetIdentity(); Set(origin, zAxis, xAxis); } //______________________________________________________________________________ TGLMatrix::TGLMatrix(const Double_t vals[16]) { // Construct matrix using the 16 Double_t 'vals' passed, // ordering is maintained - i.e. should be column major // as we are Set(vals); } //______________________________________________________________________________ TGLMatrix::TGLMatrix(const TGLMatrix & other) { // Construct matrix from 'other' *this = other; } //______________________________________________________________________________ TGLMatrix::~TGLMatrix() { // Destroy matirx object } //______________________________________________________________________________ void TGLMatrix::MultRight(const TGLMatrix & rhs) { // Multiply with matrix rhs on right. Double_t B[4]; Double_t* C = fVals; for(int r=0; r<4; ++r, ++C) { const Double_t* T = rhs.fVals; for(int c=0; c<4; ++c, T+=4) B[c] = C[0]*T[0] + C[4]*T[1] + C[8]*T[2] + C[12]*T[3]; C[0] = B[0]; C[4] = B[1]; C[8] = B[2]; C[12] = B[3]; } } //______________________________________________________________________________ void TGLMatrix::MultLeft (const TGLMatrix & lhs) { // Multiply with matrix lhs on left. Double_t B[4]; Double_t* C = fVals; for (int c=0; c<4; ++c, C+=4) { const Double_t* T = lhs.fVals; for(int r=0; r<4; ++r, ++T) B[r] = T[0]*C[0] + T[4]*C[1] + T[8]*C[2] + T[12]*C[3]; C[0] = B[0]; C[1] = B[1]; C[2] = B[2]; C[3] = B[3]; } } //______________________________________________________________________________ void TGLMatrix::Set(const TGLVertex3 & origin, const TGLVector3 & zAxis, const TGLVector3 & xAxis) { // Set matrix which when applied puts local origin at // 'origin' and the local Z axis in direction 'z'. Both // 'origin' and 'z' are expressed in the parent frame TGLVector3 zAxisInt(zAxis); zAxisInt.Normalise(); TGLVector3 xAxisInt(xAxis); xAxisInt.Normalise(); TGLVector3 yAxisInt = Cross(zAxisInt, xAxisInt); fVals[0] = xAxisInt.X(); fVals[4] = yAxisInt.X(); fVals[8 ] = zAxisInt.X(); fVals[12] = origin.X(); fVals[1] = xAxisInt.Y(); fVals[5] = yAxisInt.Y(); fVals[9 ] = zAxisInt.Y(); fVals[13] = origin.Y(); fVals[2] = xAxisInt.Z(); fVals[6] = yAxisInt.Z(); fVals[10] = zAxisInt.Z(); fVals[14] = origin.Z(); fVals[3] = 0.0; fVals[7] = 0.0; fVals[11] = 0.0; fVals[15] = 1.0; } //______________________________________________________________________________ void TGLMatrix::Set(const Double_t vals[16]) { // Set matrix using the 16 Double_t 'vals' passed, // ordering is maintained - i.e. should be column major. for (UInt_t i=0; i < 16; i++) { fVals[i] = vals[i]; } } //______________________________________________________________________________ void TGLMatrix::SetIdentity() { // Set matrix to identity. fVals[0] = 1.0; fVals[4] = 0.0; fVals[8 ] = 0.0; fVals[12] = 0.0; fVals[1] = 0.0; fVals[5] = 1.0; fVals[9 ] = 0.0; fVals[13] = 0.0; fVals[2] = 0.0; fVals[6] = 0.0; fVals[10] = 1.0; fVals[14] = 0.0; fVals[3] = 0.0; fVals[7] = 0.0; fVals[11] = 0.0; fVals[15] = 1.0; } //______________________________________________________________________________ void TGLMatrix::SetTranslation(Double_t x, Double_t y, Double_t z) { // Set matrix translation components x,y,z. SetTranslation(TGLVertex3(x,y,z)); } //______________________________________________________________________________ void TGLMatrix::SetTranslation(const TGLVertex3 & translation) { // Set matrix translation components x,y,z. fVals[12] = translation[0]; fVals[13] = translation[1]; fVals[14] = translation[2]; } //______________________________________________________________________________ TGLVector3 TGLMatrix::GetTranslation() const { // Return the translation component of matrix. return TGLVector3(fVals[12], fVals[13], fVals[14]); } //______________________________________________________________________________ void TGLMatrix::Translate(const TGLVector3 & vect) { // Shift matrix translation components by 'vect' in parent frame. fVals[12] += vect[0]; fVals[13] += vect[1]; fVals[14] += vect[2]; } //______________________________________________________________________________ void TGLMatrix::MoveLF(Int_t ai, Double_t amount) { // Translate in local frame. // i1, i2 are axes indices: 1 ~ x, 2 ~ y, 3 ~ z. const Double_t *C = fVals + 4*--ai; fVals[12] += amount*C[0]; fVals[13] += amount*C[1]; fVals[14] += amount*C[2]; } //______________________________________________________________________________ void TGLMatrix::Move3LF(Double_t x, Double_t y, Double_t z) { // Translate in local frame along all base vectors simultaneously. fVals[12] += x*fVals[0] + y*fVals[4] + z*fVals[8]; fVals[13] += x*fVals[1] + y*fVals[5] + z*fVals[9]; fVals[14] += x*fVals[2] + y*fVals[6] + z*fVals[10]; } //______________________________________________________________________________ void TGLMatrix::Scale(const TGLVector3 & scale) { // Set matrix axis scales to 'scale'. Note - this really sets // the overall (total) scaling for each axis - it does NOT // apply compounded scale on top of existing one TGLVector3 currentScale = GetScale(); // x if (currentScale[0] != 0.0) { fVals[0] *= scale[0]/currentScale[0]; fVals[1] *= scale[0]/currentScale[0]; fVals[2] *= scale[0]/currentScale[0]; } else { Error("TGLMatrix::Scale()", "zero scale div by zero"); } // y if (currentScale[1] != 0.0) { fVals[4] *= scale[1]/currentScale[1]; fVals[5] *= scale[1]/currentScale[1]; fVals[6] *= scale[1]/currentScale[1]; } else { Error("TGLMatrix::Scale()", "zero scale div by zero"); } // z if (currentScale[2] != 0.0) { fVals[8] *= scale[2]/currentScale[2]; fVals[9] *= scale[2]/currentScale[2]; fVals[10] *= scale[2]/currentScale[2]; } else { Error("TGLMatrix::Scale()", "zero scale div by zero"); } } //______________________________________________________________________________ void TGLMatrix::Rotate(const TGLVertex3 & pivot, const TGLVector3 & axis, Double_t angle) { // Update martix so resulting transform has been rotated about 'pivot' // (in parent frame), round vector 'axis', through 'angle' (radians) // Equivalent to glRotate function, but with addition of translation // and compounded on top of existing. TGLVector3 nAxis = axis; nAxis.Normalise(); Double_t x = nAxis.X(); Double_t y = nAxis.Y(); Double_t z = nAxis.Z(); Double_t c = TMath::Cos(angle); Double_t s = TMath::Sin(angle); // Calculate local rotation, with pre-translation to local pivot origin TGLMatrix rotMat; rotMat[ 0] = x*x*(1-c) + c; rotMat[ 4] = x*y*(1-c) - z*s; rotMat[ 8] = x*z*(1-c) + y*s; rotMat[12] = pivot[0]; rotMat[ 1] = y*x*(1-c) + z*s; rotMat[ 5] = y*y*(1-c) + c; rotMat[ 9] = y*z*(1-c) - x*s; rotMat[13] = pivot[1]; rotMat[ 2] = x*z*(1-c) - y*s; rotMat[ 6] = y*z*(1-c) + x*s; rotMat[10] = z*z*(1-c) + c; rotMat[14] = pivot[2]; rotMat[ 3] = 0.0; rotMat[ 7] = 0.0; rotMat[11] = 0.0; rotMat[15] = 1.0; TGLMatrix localToWorld(-pivot); // TODO: Ugly - should use quaternions to avoid compound rounding errors and // triple multiplication *this = rotMat * localToWorld * (*this); } //______________________________________________________________________________ void TGLMatrix::RotateLF(Int_t i1, Int_t i2, Double_t amount) { // Rotate in local frame. Does optimised version of MultRight. // i1, i2 are axes indices: 1 ~ x, 2 ~ y, 3 ~ z. if(i1 == i2) return; const Double_t cos = TMath::Cos(amount), sin = TMath::Sin(amount); Double_t b1, b2; Double_t* c = fVals; --i1 <<= 2; --i2 <<= 2; // column major for(int r=0; r<4; ++r, ++c) { b1 = cos*c[i1] + sin*c[i2]; b2 = cos*c[i2] - sin*c[i1]; c[i1] = b1; c[i2] = b2; } } //______________________________________________________________________________ void TGLMatrix::RotatePF(Int_t i1, Int_t i2, Double_t amount) { // Rotate in parent frame. Does optimised version of MultLeft. if(i1 == i2) return; // Optimized version: const Double_t cos = TMath::Cos(amount), sin = TMath::Sin(amount); Double_t b1, b2; Double_t* C = fVals; --i1; --i2; for(int c=0; c<4; ++c, C+=4) { b1 = cos*C[i1] - sin*C[i2]; b2 = cos*C[i2] + sin*C[i1]; C[i1] = b1; C[i2] = b2; } } //______________________________________________________________________________ void TGLMatrix::TransformVertex(TGLVertex3 & vertex) const { // Transform passed 'vertex' by this matrix - converts local frame to parent TGLVertex3 orig = vertex; for (UInt_t i = 0; i < 3; i++) { vertex[i] = orig[0] * fVals[0+i] + orig[1] * fVals[4+i] + orig[2] * fVals[8+i] + fVals[12+i]; } } //______________________________________________________________________________ void TGLMatrix::Transpose3x3() { // Transpose the top left 3x3 matrix component along major diagonal // Supported as currently incompatability between TGeo and GL matrix // layouts for this 3x3 only. To be resolved. // TODO: Move this fix to the TBuffer3D filling side and remove // // 0 4 8 12 // 1 5 9 13 // 2 6 10 14 // 3 7 11 15 Double_t temp = fVals[4]; fVals[4] = fVals[1]; fVals[1] = temp; temp = fVals[8]; fVals[8] = fVals[2]; fVals[2] = temp; temp = fVals[9]; fVals[9] = fVals[6]; fVals[6] = temp; } //______________________________________________________________________________ Double_t TGLMatrix::Invert() { // Invert the matrix, returns determinant. // Copied from TMatrixFCramerInv. Double_t* M = fVals; const Double_t det2_12_01 = M[1]*M[6] - M[5]*M[2]; const Double_t det2_12_02 = M[1]*M[10] - M[9]*M[2]; const Double_t det2_12_03 = M[1]*M[14] - M[13]*M[2]; const Double_t det2_12_13 = M[5]*M[14] - M[13]*M[6]; const Double_t det2_12_23 = M[9]*M[14] - M[13]*M[10]; const Double_t det2_12_12 = M[5]*M[10] - M[9]*M[6]; const Double_t det2_13_01 = M[1]*M[7] - M[5]*M[3]; const Double_t det2_13_02 = M[1]*M[11] - M[9]*M[3]; const Double_t det2_13_03 = M[1]*M[15] - M[13]*M[3]; const Double_t det2_13_12 = M[5]*M[11] - M[9]*M[7]; const Double_t det2_13_13 = M[5]*M[15] - M[13]*M[7]; const Double_t det2_13_23 = M[9]*M[15] - M[13]*M[11]; const Double_t det2_23_01 = M[2]*M[7] - M[6]*M[3]; const Double_t det2_23_02 = M[2]*M[11] - M[10]*M[3]; const Double_t det2_23_03 = M[2]*M[15] - M[14]*M[3]; const Double_t det2_23_12 = M[6]*M[11] - M[10]*M[7]; const Double_t det2_23_13 = M[6]*M[15] - M[14]*M[7]; const Double_t det2_23_23 = M[10]*M[15] - M[14]*M[11]; const Double_t det3_012_012 = M[0]*det2_12_12 - M[4]*det2_12_02 + M[8]*det2_12_01; const Double_t det3_012_013 = M[0]*det2_12_13 - M[4]*det2_12_03 + M[12]*det2_12_01; const Double_t det3_012_023 = M[0]*det2_12_23 - M[8]*det2_12_03 + M[12]*det2_12_02; const Double_t det3_012_123 = M[4]*det2_12_23 - M[8]*det2_12_13 + M[12]*det2_12_12; const Double_t det3_013_012 = M[0]*det2_13_12 - M[4]*det2_13_02 + M[8]*det2_13_01; const Double_t det3_013_013 = M[0]*det2_13_13 - M[4]*det2_13_03 + M[12]*det2_13_01; const Double_t det3_013_023 = M[0]*det2_13_23 - M[8]*det2_13_03 + M[12]*det2_13_02; const Double_t det3_013_123 = M[4]*det2_13_23 - M[8]*det2_13_13 + M[12]*det2_13_12; const Double_t det3_023_012 = M[0]*det2_23_12 - M[4]*det2_23_02 + M[8]*det2_23_01; const Double_t det3_023_013 = M[0]*det2_23_13 - M[4]*det2_23_03 + M[12]*det2_23_01; const Double_t det3_023_023 = M[0]*det2_23_23 - M[8]*det2_23_03 + M[12]*det2_23_02; const Double_t det3_023_123 = M[4]*det2_23_23 - M[8]*det2_23_13 + M[12]*det2_23_12; const Double_t det3_123_012 = M[1]*det2_23_12 - M[5]*det2_23_02 + M[9]*det2_23_01; const Double_t det3_123_013 = M[1]*det2_23_13 - M[5]*det2_23_03 + M[13]*det2_23_01; const Double_t det3_123_023 = M[1]*det2_23_23 - M[9]*det2_23_03 + M[13]*det2_23_02; const Double_t det3_123_123 = M[5]*det2_23_23 - M[9]*det2_23_13 + M[13]*det2_23_12; const Double_t det = M[0]*det3_123_123 - M[4]*det3_123_023 + M[8]*det3_123_013 - M[12]*det3_123_012; if(det == 0) { Warning("TGLMatrix::Invert", "matrix is singular."); return 0; } const Double_t oneOverDet = 1.0/det; const Double_t mn1OverDet = - oneOverDet; M[0] = det3_123_123 * oneOverDet; M[4] = det3_023_123 * mn1OverDet; M[8] = det3_013_123 * oneOverDet; M[12] = det3_012_123 * mn1OverDet; M[1] = det3_123_023 * mn1OverDet; M[5] = det3_023_023 * oneOverDet; M[9] = det3_013_023 * mn1OverDet; M[13] = det3_012_023 * oneOverDet; M[2] = det3_123_013 * oneOverDet; M[6] = det3_023_013 * mn1OverDet; M[10] = det3_013_013 * oneOverDet; M[14] = det3_012_013 * mn1OverDet; M[3] = det3_123_012 * mn1OverDet; M[7] = det3_023_012 * oneOverDet; M[11] = det3_013_012 * mn1OverDet; M[15] = det3_012_012 * oneOverDet; return det; } //______________________________________________________________________________ TGLVector3 TGLMatrix::Multiply(const TGLVector3& v, Double_t w) const { // Multiply vector. const Double_t* M = fVals; TGLVector3 r; r.X() = M[0]*v[0] + M[4]*v[1] + M[8]*v[2] + M[12]*w; r.Y() = M[1]*v[0] + M[5]*v[1] + M[9]*v[2] + M[13]*w; r.Z() = M[2]*v[0] + M[6]*v[1] + M[10]*v[2] + M[14]*w; return r; } //______________________________________________________________________________ TGLVector3 TGLMatrix::Rotate(const TGLVector3& v) const { // Rotate vector. Translation is not applied. const Double_t* M = fVals; TGLVector3 r; r.X() = M[0]*v[0] + M[4]*v[1] + M[8]*v[2]; r.Y() = M[1]*v[0] + M[5]*v[1] + M[9]*v[2]; r.Z() = M[2]*v[0] + M[6]*v[1] + M[10]*v[2]; return r; } //______________________________________________________________________________ void TGLMatrix::MultiplyIP(TGLVector3& v, Double_t w) const { // Multiply vector in-place. const Double_t* M = fVals; Double_t r[3] = { v[0], v[1], v[2] }; v.X() = M[0]*r[0] + M[4]*r[1] + M[8]*r[2] + M[12]*w; v.Y() = M[1]*r[0] + M[5]*r[1] + M[9]*r[2] + M[13]*w; v.Z() = M[2]*r[0] + M[6]*r[1] + M[10]*r[2] + M[14]*w; } //______________________________________________________________________________ void TGLMatrix::RotateIP(TGLVector3& v) const { // Rotate vector in-place. Translation is not applied. const Double_t* M = fVals; Double_t r[3] = { v[0], v[1], v[2] }; v.X() = M[0]*r[0] + M[4]*r[1] + M[8]*r[2]; v.Y() = M[1]*r[0] + M[5]*r[1] + M[9]*r[2]; v.Z() = M[2]*r[0] + M[6]*r[1] + M[10]*r[2]; } //______________________________________________________________________________ TGLVector3 TGLMatrix::GetScale() const { // Get local axis scaling factors TGLVector3 x(fVals[0], fVals[1], fVals[2]); TGLVector3 y(fVals[4], fVals[5], fVals[6]); TGLVector3 z(fVals[8], fVals[9], fVals[10]); return TGLVector3(x.Mag(), y.Mag(), z.Mag()); } //______________________________________________________________________________ void TGLMatrix::Dump() const { // Output 16 matrix components to std::cout // // 0 4 8 12 // 1 5 9 13 // 2 6 10 14 // 3 7 11 15 // std::cout.precision(6); for (Int_t x = 0; x < 4; x++) { std::cout << "[ "; for (Int_t y = 0; y < 4; y++) { std::cout << fVals[y*4 + x] << " "; } std::cout << "]" << std::endl; } } //============================================================================== // TGLColor //============================================================================== //______________________________________________________________________________ // // Class encapsulating color information in preferred GL format - an // array of four unsigned bytes. // Color index is also cached for easier interfacing with the // traditional ROOT graphics. // ClassImp(TGLColor); //______________________________________________________________________________ TGLColor::TGLColor() { // Default constructor. Color is initialized to black. fRGBA[0] = fRGBA[1] = fRGBA[2] = 0; fRGBA[3] = 255; fIndex = -1; } //______________________________________________________________________________ TGLColor::TGLColor(Int_t r, Int_t g, Int_t b, Int_t a) { // Constructor from Int_t values. SetColor(r, g, b, a); } //______________________________________________________________________________ TGLColor::TGLColor(Float_t r, Float_t g, Float_t b, Float_t a) { // Constructor from Float_t values. SetColor(r, g, b, a); } //______________________________________________________________________________ TGLColor::TGLColor(Color_t color_index, Char_t transparency) { // Constructor from color-index and transparency. SetColor(color_index, transparency); } //______________________________________________________________________________ TGLColor::~TGLColor() { // Dectructor. } //______________________________________________________________________________ TGLColor& TGLColor::operator=(const TGLColor& c) { // Assignment operator. fRGBA[0] = c.fRGBA[0]; fRGBA[1] = c.fRGBA[1]; fRGBA[2] = c.fRGBA[2]; fRGBA[3] = c.fRGBA[3]; fIndex = c.fIndex; return *this; } //______________________________________________________________________________ Color_t TGLColor::GetColorIndex() const { // Returns color-index representing the color. if (fIndex == -1) fIndex = TColor::GetColor(fRGBA[0], fRGBA[1], fRGBA[2]); return fIndex; } //______________________________________________________________________________ Char_t TGLColor::GetTransparency() const { // Returns transparecy value. return TMath::Nint(100.0*(1.0 - fRGBA[3]/255.0)); } //______________________________________________________________________________ void TGLColor::SetColor(Int_t r, Int_t g, Int_t b, Int_t a) { // Set color with Int_t values. fRGBA[0] = r; fRGBA[1] = g; fRGBA[2] = b; fRGBA[3] = a; fIndex = -1; } //______________________________________________________________________________ void TGLColor::SetColor(Float_t r, Float_t g, Float_t b, Float_t a) { // Set color with Float_t values. fRGBA[0] = (UChar_t)(255*r); fRGBA[1] = (UChar_t)(255*g); fRGBA[2] = (UChar_t)(255*b); fRGBA[3] = (UChar_t)(255*a); fIndex = -1; } //______________________________________________________________________________ void TGLColor::SetColor(Color_t color_index) { // Set color by color-index. Alpha is not changed. // If color_index is not valid, color is set to magenta. TColor* c = gROOT->GetColor(color_index); if (c) { fRGBA[0] = (UChar_t)(255*c->GetRed()); fRGBA[1] = (UChar_t)(255*c->GetGreen()); fRGBA[2] = (UChar_t)(255*c->GetBlue()); fIndex = color_index; } else { // Set to magenta. fRGBA[0] = 255; fRGBA[1] = 0; fRGBA[2] = 255; fIndex = -1; } } //______________________________________________________________________________ void TGLColor::SetColor(Color_t color_index, Char_t transparency) { // Set color by color-index and alpha from the transparency. // If color_index is not valid, color is set to magenta. UChar_t alpha = (255*(100 - transparency))/100; TColor* c = gROOT->GetColor(color_index); if (c) { fRGBA[0] = (UChar_t)(255*c->GetRed()); fRGBA[1] = (UChar_t)(255*c->GetGreen()); fRGBA[2] = (UChar_t)(255*c->GetBlue()); fRGBA[3] = alpha; fIndex = color_index; } else { // Set to magenta. fRGBA[0] = 255; fRGBA[1] = 0; fRGBA[2] = 255; fRGBA[3] = alpha; fIndex = -1; return; } } //______________________________________________________________________________ void TGLColor::SetTransparency(Char_t transparency) { // Set alpha from the transparency. fRGBA[3] = (255*(100 - transparency))/100; } //______________________________________________________________________________ TString TGLColor::AsString() const { // Return string describing the color. return TString::Format("rgba:%02hhx/%02hhx/%02hhx/%02hhx", fRGBA[0], fRGBA[1], fRGBA[2], fRGBA[3]); } //============================================================================== // TGLColorSet //============================================================================== //______________________________________________________________________________ // // Class encapsulating a set of colors used throughout standard rendering. // ClassImp(TGLColorSet); //______________________________________________________________________________ TGLColorSet::TGLColorSet() { // Constructor. Sets default for dark background. StdDarkBackground(); } //______________________________________________________________________________ TGLColorSet::~TGLColorSet() { // Destructor. } //______________________________________________________________________________ TGLColorSet& TGLColorSet::operator=(const TGLColorSet& s) { // Assignment operator. fBackground = s.fBackground; fForeground = s.fForeground; fOutline = s.fOutline; fMarkup = s.fMarkup; for (Int_t i = 0; i < 5; ++i) fSelection[i] = s.fSelection[i]; return *this; } //______________________________________________________________________________ void TGLColorSet::StdDarkBackground() { // Set defaults for dark (black) background. fBackground .SetColor(0, 0, 0); fForeground .SetColor(255, 255, 255); fOutline .SetColor(240, 255, 240); fMarkup .SetColor(200, 200, 200); fSelection[0].SetColor( 0, 0, 0); fSelection[1].SetColor(255, 220, 220); fSelection[2].SetColor(255, 220, 220); fSelection[3].SetColor(200, 200, 255); fSelection[4].SetColor(200, 200, 255); } //______________________________________________________________________________ void TGLColorSet::StdLightBackground() { // Set defaults for light (white) background. fBackground .SetColor(255, 255, 255); fForeground .SetColor(0, 0, 0); fOutline .SetColor(0, 0, 0); fMarkup .SetColor(100, 100, 100); fSelection[0].SetColor(0, 0, 0); fSelection[1].SetColor(200, 100, 100); fSelection[2].SetColor(200, 100, 100); fSelection[3].SetColor(100, 100, 200); fSelection[4].SetColor(100, 100, 200); } //============================================================================== // TGLUtil //============================================================================== //______________________________________________________________________________ // // Wrapper class for various misc static functions - error checking, // draw helpers etc. // ClassImp(TGLUtil); UInt_t TGLUtil::fgDefaultDrawQuality = 10; UInt_t TGLUtil::fgDrawQuality = fgDefaultDrawQuality; UInt_t TGLUtil::fgColorLockCount = 0; #ifndef CALLBACK #define CALLBACK #endif extern "C" { #if defined(__APPLE_CC__) && __APPLE_CC__ > 4000 && __APPLE_CC__ < 5450 && !defined(__INTEL_COMPILER) typedef GLvoid (*tessfuncptr_t)(...); #elif defined( __mips ) || defined( __linux__ ) || defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __sun ) || defined (__CYGWIN__) || defined (__APPLE__) typedef GLvoid (*tessfuncptr_t)(); #elif defined ( WIN32) typedef GLvoid (CALLBACK *tessfuncptr_t)( ); #else #error "Error - need to define type tessfuncptr_t for this platform/compiler" #endif } namespace { class TGLTesselatorWrap { protected: public: GLUtesselator *fTess; TGLTesselatorWrap(tessfuncptr_t vertex_func) : fTess(0) { fTess = gluNewTess(); if (!fTess) throw std::bad_alloc(); gluTessCallback(fTess, (GLenum)GLU_BEGIN, (tessfuncptr_t) glBegin); gluTessCallback(fTess, (GLenum)GLU_END, (tessfuncptr_t) glEnd); gluTessCallback(fTess, (GLenum)GLU_VERTEX, vertex_func); } virtual ~TGLTesselatorWrap() { if (fTess) gluDeleteTess(fTess); } }; } //______________________________________________________________________________ GLUtesselator* TGLUtil::GetDrawTesselator3fv() { // Returns a tesselator for direct drawing when using 3-vertices with // single precision. static TGLTesselatorWrap singleton((tessfuncptr_t) glVertex3fv); return singleton.fTess; } //______________________________________________________________________________ GLUtesselator* TGLUtil::GetDrawTesselator4fv() { // Returns a tesselator for direct drawing when using 4-vertices with // single precision. static TGLTesselatorWrap singleton((tessfuncptr_t) glVertex4fv); return singleton.fTess; } //______________________________________________________________________________ GLUtesselator* TGLUtil::GetDrawTesselator3dv() { // Returns a tesselator for direct drawing when using 3-vertices with // double precision. static TGLTesselatorWrap singleton((tessfuncptr_t) glVertex3dv); return singleton.fTess; } //______________________________________________________________________________ GLUtesselator* TGLUtil::GetDrawTesselator4dv() { // Returns a tesselator for direct drawing when using 4-vertices with // double precision. static TGLTesselatorWrap singleton((tessfuncptr_t) glVertex4dv); return singleton.fTess; } //______________________________________________________________________________ UInt_t TGLUtil::GetDrawQuality() { //static: get draw quality return fgDrawQuality; } //______________________________________________________________________________ void TGLUtil::SetDrawQuality(UInt_t dq) { //static: set draw quality fgDrawQuality = dq; } //______________________________________________________________________________ void TGLUtil::ResetDrawQuality() { //static: reset draw quality fgDrawQuality = fgDefaultDrawQuality; } //______________________________________________________________________________ UInt_t TGLUtil::GetDefaultDrawQuality() { //static: get default draw quality return fgDefaultDrawQuality; } //______________________________________________________________________________ void TGLUtil::SetDefaultDrawQuality(UInt_t dq) { //static: set default draw quality fgDefaultDrawQuality = dq; } //______________________________________________________________________________ void TGLUtil::CheckError(const char * loc) { // Check current GL error state, outputing details via ROOT // Error method if one GLenum errCode; const GLubyte *errString; if ((errCode = glGetError()) != GL_NO_ERROR) { errString = gluErrorString(errCode); if (loc) { Error(loc, "GL Error %s", (const char *)errString); } else { Error("TGLUtil::CheckError", "GL Error %s", (const char *)errString); } } } /******************************************************************************/ // Color wrapping functions /******************************************************************************/ //______________________________________________________________________________ UInt_t TGLUtil::LockColor() { // Prevent further color changes. return ++fgColorLockCount; } //______________________________________________________________________________ UInt_t TGLUtil::UnlockColor() { // Allow color changes. if (fgColorLockCount) --fgColorLockCount; else Error("TGLUtil::UnlockColor", "fgColorLockCount already 0."); return fgColorLockCount; } //______________________________________________________________________________ Bool_t TGLUtil::IsColorLocked() { // Returns true if color lockcount is greater than 0. return fgColorLockCount > 0; } //______________________________________________________________________________ void TGLUtil::Color(const TGLColor& color) { // Set color from TGLColor. if (fgColorLockCount == 0) glColor4ubv(color.CArr()); } //______________________________________________________________________________ void TGLUtil::Color(const TGLColor& color, UChar_t alpha) { // Set color from TGLColor and alpha value. if (fgColorLockCount == 0) { glColor4ub(color.GetRed(), color.GetGreen(), color.GetBlue(), alpha); } } //______________________________________________________________________________ void TGLUtil::Color(const TGLColor& color, Float_t alpha) { // Set color from TGLColor and alpha value. if (fgColorLockCount == 0) { glColor4ub(color.GetRed(), color.GetGreen(), color.GetBlue(), (UChar_t)(255*alpha)); } } //______________________________________________________________________________ void TGLUtil::Color(Color_t color_index, Float_t alpha) { // Set color from color_index and GL-style alpha (default 1). if (fgColorLockCount == 0) { if (color_index < 0) color_index = 1; TColor* c = gROOT->GetColor(color_index); if (c) glColor4f(c->GetRed(), c->GetGreen(), c->GetBlue(), alpha); } } //______________________________________________________________________________ void TGLUtil::ColorTransparency(Color_t color_index, Char_t transparency) { // Set color from color_index and ROOT-style transparency (default 0). if (fgColorLockCount == 0) { if (color_index < 0) color_index = 1; TColor* c = gROOT->GetColor(color_index); if (c) glColor4f(c->GetRed(), c->GetGreen(), c->GetBlue(), 1.0f - 0.01f*transparency); } } //______________________________________________________________________________ void TGLUtil::Color3ub(UChar_t r, UChar_t g, UChar_t b) { // Wrapper for glColor3f. if (fgColorLockCount == 0) glColor3ub(r, g, b); } //______________________________________________________________________________ void TGLUtil::Color4ub(UChar_t r, UChar_t g, UChar_t b, UChar_t a) { // Wrapper for glColor4f. if (fgColorLockCount == 0) glColor4ub(r, g, b, a); } //______________________________________________________________________________ void TGLUtil::Color3ubv(const UChar_t* rgb) { // Wrapper for glColor3fv. if (fgColorLockCount == 0) glColor3ubv(rgb); } //______________________________________________________________________________ void TGLUtil::Color4ubv(const UChar_t* rgba) { // Wrapper for glColor4fv. if (fgColorLockCount == 0) glColor4ubv(rgba); } //______________________________________________________________________________ void TGLUtil::Color3f(Float_t r, Float_t g, Float_t b) { // Wrapper for glColor3f. if (fgColorLockCount == 0) glColor3f(r, g, b); } //______________________________________________________________________________ void TGLUtil::Color4f(Float_t r, Float_t g, Float_t b, Float_t a) { // Wrapper for glColor4f. if (fgColorLockCount == 0) glColor4f(r, g, b, a); } //______________________________________________________________________________ void TGLUtil::Color3fv(const Float_t* rgb) { // Wrapper for glColor3fv. if (fgColorLockCount == 0) glColor3fv(rgb); } //______________________________________________________________________________ void TGLUtil::Color4fv(const Float_t* rgba) { // Wrapper for glColor4fv. if (fgColorLockCount == 0) glColor4fv(rgba); } /******************************************************************************/ // Rendering of polymarkers and lines from logical-shapes. /******************************************************************************/ void TGLUtil::BeginExtendPickRegion(Float_t scale) { // Extend pick region for large point-sizes or line-widths. glMatrixMode(GL_PROJECTION); glPushMatrix(); Float_t pm[16]; glGetFloatv(GL_PROJECTION_MATRIX, pm); for (Int_t i=0; i<=12; i+=4) { pm[i] *= scale; pm[i+1] *= scale; } glLoadMatrixf(pm); glMatrixMode(GL_MODELVIEW); } void TGLUtil::EndExtendPickRegion() { // End extension of the pick region. glMatrixMode(GL_PROJECTION); glPopMatrix(); glMatrixMode(GL_MODELVIEW); } //______________________________________________________________________________ void TGLUtil::RenderPolyMarkers(const TAttMarker& marker, Float_t* p, Int_t n, Int_t pick_radius, Bool_t selection, Bool_t sec_selection) { // Render polymarkers at points specified by p-array. // Supports point and cross-like styles. if (n == 0) return; glPushAttrib(GL_ENABLE_BIT | GL_POINT_BIT | GL_LINE_BIT); glDisable(GL_LIGHTING); TGLUtil::Color(marker.GetMarkerColor()); Int_t s = marker.GetMarkerStyle(); if (s == 2 || s == 3 || s == 5 || s == 28) RenderCrosses(marker, p, n, sec_selection); else RenderPoints(marker, p, n, pick_radius, selection, sec_selection); glPopAttrib(); } //______________________________________________________________________________ void TGLUtil::RenderPoints(const TAttMarker& marker, Float_t* op, Int_t n, Int_t pick_radius, Bool_t selection, Bool_t sec_selection) { // Render markers as circular or square points. // Color is never changed. Int_t style = marker.GetMarkerStyle(); Float_t size = 5*marker.GetMarkerSize(); if (style == 4 || style == 20 || style == 24) { glEnable(GL_POINT_SMOOTH); if (style == 4 || style == 24) { glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glHint(GL_POINT_SMOOTH_HINT, GL_NICEST); } } else { glDisable(GL_POINT_SMOOTH); if (style == 1) size = 1; else if (style == 6) size = 2; else if (style == 7) size = 3; } glPointSize(size); // During selection extend picking region for large point-sizes. Bool_t changePM = selection && size > pick_radius; if (changePM) BeginExtendPickRegion((Float_t) pick_radius / size); Float_t* p = op; if (sec_selection) { glPushName(0); for (Int_t i=0; i<n; ++i, p+=3) { glLoadName(i); glBegin(GL_POINTS); glVertex3fv(p); glEnd(); } glPopName(); } else { glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT); glVertexPointer(3, GL_FLOAT, 0, p); glEnableClientState(GL_VERTEX_ARRAY); { // Circumvent bug in ATI's linux drivers. Int_t nleft = n; Int_t ndone = 0; const Int_t maxChunk = 8192; while (nleft > maxChunk) { glDrawArrays(GL_POINTS, ndone, maxChunk); nleft -= maxChunk; ndone += maxChunk; } glDrawArrays(GL_POINTS, ndone, nleft); } glPopClientAttrib(); } if (changePM) EndExtendPickRegion(); } //______________________________________________________________________________ void TGLUtil::RenderCrosses(const TAttMarker& marker, Float_t* op, Int_t n, Bool_t sec_selection) { // Render markers as crosses. // Color is never changed. if (marker.GetMarkerStyle() == 28) { glEnable(GL_BLEND); glEnable(GL_LINE_SMOOTH); glLineWidth(2); } else { glDisable(GL_LINE_SMOOTH); } // cross dim const Float_t d = 2*marker.GetMarkerSize(); Float_t* p = op; if (sec_selection) { glPushName(0); for (Int_t i=0; i<n; ++i, p+=3) { glLoadName(i); glBegin(GL_LINES); glVertex3f(p[0]-d, p[1], p[2]); glVertex3f(p[0]+d, p[1], p[2]); glVertex3f(p[0], p[1]-d, p[2]); glVertex3f(p[0], p[1]+d, p[2]); glVertex3f(p[0], p[1], p[2]-d); glVertex3f(p[0], p[1], p[2]+d); glEnd(); } glPopName(); } else { glBegin(GL_LINES); for (Int_t i=0; i<n; ++i, p+=3) { glVertex3f(p[0]-d, p[1], p[2]); glVertex3f(p[0]+d, p[1], p[2]); glVertex3f(p[0], p[1]-d, p[2]); glVertex3f(p[0], p[1]+d, p[2]); glVertex3f(p[0], p[1], p[2]-d); glVertex3f(p[0], p[1], p[2]+d); } glEnd(); } } //______________________________________________________________________________ void TGLUtil::RenderPolyLine(const TAttLine& aline, Float_t* p, Int_t n, Int_t pick_radius, Bool_t selection) { // Render poly-line as specified by the p-array. if (n == 0) return; glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT); glDisable(GL_LIGHTING); TGLUtil::Color(aline.GetLineColor()); glLineWidth(aline.GetLineWidth()); if (aline.GetLineStyle() > 1) { Int_t fac = 1; UShort_t pat = 0xffff; switch (aline.GetLineStyle()) { case 2: pat = 0x3333; break; case 3: pat = 0x5555; break; case 4: pat = 0xf040; break; case 5: pat = 0xf4f4; break; case 6: pat = 0xf111; break; case 7: pat = 0xf0f0; break; case 8: pat = 0xff11; break; case 9: pat = 0x3fff; break; case 10: pat = 0x08ff; fac = 2; break; } glLineStipple(1, pat); glEnable(GL_LINE_STIPPLE); } // During selection extend picking region for large line-widths. Bool_t changePM = selection && aline.GetLineWidth() > pick_radius; if (changePM) BeginExtendPickRegion((Float_t) pick_radius / aline.GetLineWidth()); Float_t* tp = p; glBegin(GL_LINE_STRIP); for (Int_t i=0; i<n; ++i, tp+=3) glVertex3fv(tp); glEnd(); if (changePM) EndExtendPickRegion(); glPopAttrib(); } /******************************************************************************/ // Rendering atoms used by TGLViewer / TGScene. /******************************************************************************/ //______________________________________________________________________________ void TGLUtil::SetDrawColors(const Float_t rgba[4]) { // Set basic draw colors from 4 component 'rgba' // Used by other TGLUtil drawing routines // // Sets basic (unlit) color - glColor // and also GL materials (see OpenGL docs) thus: // // diffuse : rgba // ambient : 0.0 0.0 0.0 1.0 // specular : 0.6 0.6 0.6 1.0 // emission : rgba/4.0 // shininess: 60.0 // // emission is set so objects with no lights (but lighting still enabled) // are partially visible // Util function to setup GL color for both unlit and lit material static Float_t ambient[4] = {0.0, 0.0, 0.0, 1.0}; static Float_t specular[4] = {0.6, 0.6, 0.6, 1.0}; Float_t emission[4] = {rgba[0]/4.f, rgba[1]/4.f, rgba[2]/4.f, rgba[3]}; glColor4fv(rgba); glMaterialfv(GL_FRONT, GL_DIFFUSE, rgba); glMaterialfv(GL_FRONT, GL_AMBIENT, ambient); glMaterialfv(GL_FRONT, GL_SPECULAR, specular); glMaterialfv(GL_FRONT, GL_EMISSION, emission); glMaterialf(GL_FRONT, GL_SHININESS, 60.0); } //______________________________________________________________________________ void TGLUtil::DrawSphere(const TGLVertex3 & position, Double_t radius, const Float_t rgba[4]) { // Draw sphere, centered on vertex 'position', with radius 'radius', // color 'rgba' static TGLQuadric quad; SetDrawColors(rgba); glPushMatrix(); glTranslated(position.X(), position.Y(), position.Z()); gluSphere(quad.Get(), radius, fgDrawQuality, fgDrawQuality); glPopMatrix(); } //______________________________________________________________________________ void TGLUtil::DrawLine(const TGLLine3 & line, ELineHeadShape head, Double_t size, const Float_t rgba[4]) { // Draw thick line (tube) defined by 'line', with head at end shape // 'head' - box/arrow/none, (head) size 'size', color 'rgba' DrawLine(line.Start(), line.Vector(), head, size, rgba); } //______________________________________________________________________________ void TGLUtil::DrawLine(const TGLVertex3 & start, const TGLVector3 & vector, ELineHeadShape head, Double_t size, const Float_t rgba[4]) { // Draw thick line (tube) running from 'start', length 'vector', // with head at end of shape 'head' - box/arrow/none, // (head) size 'size', color 'rgba' static TGLQuadric quad; // Draw 3D line (tube) with optional head shape SetDrawColors(rgba); glPushMatrix(); TGLMatrix local(start, vector); glMultMatrixd(local.CArr()); Double_t headHeight=0; if (head == kLineHeadNone) { headHeight = 0.0; } else if (head == kLineHeadArrow) { headHeight = size*2.0; } else if (head == kLineHeadBox) { headHeight = size*1.4; } // Line (tube) component gluCylinder(quad.Get(), 0.25*size, 0.25*size, vector.Mag() - headHeight, fgDrawQuality, 1); gluQuadricOrientation(quad.Get(), (GLenum)GLU_INSIDE); gluDisk(quad.Get(), 0.0, 0.25*size, fgDrawQuality, 1); glTranslated(0.0, 0.0, vector.Mag() - headHeight); // Shift down local Z to end of line if (head == kLineHeadNone) { // Cap end of line gluQuadricOrientation(quad.Get(), (GLenum)GLU_OUTSIDE); gluDisk(quad.Get(), 0.0, size/4.0, fgDrawQuality, 1); } else if (head == kLineHeadArrow) { // Arrow base / end line cap gluDisk(quad.Get(), 0.0, size, fgDrawQuality, 1); // Arrow cone gluQuadricOrientation(quad.Get(), (GLenum)GLU_OUTSIDE); gluCylinder(quad.Get(), size, 0.0, headHeight, fgDrawQuality, 1); } else if (head == kLineHeadBox) { // Box // TODO: Drawing box should be simplier - maybe make // a static helper which BB + others use. // Single face tesselation - ugly lighting gluQuadricOrientation(quad.Get(), (GLenum)GLU_OUTSIDE); TGLBoundingBox box(TGLVertex3(-size*.7, -size*.7, 0.0), TGLVertex3(size*.7, size*.7, headHeight)); box.Draw(kTRUE); } glPopMatrix(); } //______________________________________________________________________________ void TGLUtil::DrawRing(const TGLVertex3 & center, const TGLVector3 & normal, Double_t radius, const Float_t rgba[4]) { // Draw ring, centered on 'center', lying on plane defined by 'center' & 'normal' // of outer radius 'radius', color 'rgba' static TGLQuadric quad; // Draw a ring, round vertex 'center', lying on plane defined by 'normal' vector // Radius defines the outer radius TGLUtil::SetDrawColors(rgba); Double_t outer = radius; Double_t width = radius*0.05; Double_t inner = outer - width; // Shift into local system, looking down 'normal' vector, origin at center glPushMatrix(); TGLMatrix local(center, normal); glMultMatrixd(local.CArr()); // Shift half width so rings centered over center vertex glTranslated(0.0, 0.0, -width/2.0); // Inner and outer faces gluCylinder(quad.Get(), inner, inner, width, fgDrawQuality, 1); gluCylinder(quad.Get(), outer, outer, width, fgDrawQuality, 1); // Top/bottom gluQuadricOrientation(quad.Get(), (GLenum)GLU_INSIDE); gluDisk(quad.Get(), inner, outer, fgDrawQuality, 1); glTranslated(0.0, 0.0, width); gluQuadricOrientation(quad.Get(), (GLenum)GLU_OUTSIDE); gluDisk(quad.Get(), inner, outer, fgDrawQuality, 1); glPopMatrix(); } /**************************************************************************/ //______________________________________________________________________________ void TGLUtil::DrawReferenceMarker(const TGLCamera & camera, const TGLVertex3 & pos, Float_t radius, const Float_t * rgba) { // Draw a sphere- marker on world-coordinate 'pos' with pixel // radius 'radius'. Color argument is optional. static const Float_t defColor[4] = { 0.98, 0.45, 0.0, 1.0 }; // Orange radius = camera.ViewportDeltaToWorld(pos, radius, radius).Mag(); DrawSphere(pos, radius, rgba ? rgba : defColor); } //______________________________________________________________________________ void TGLUtil::DrawSimpleAxes(const TGLCamera & camera, const TGLBoundingBox & bbox, Int_t axesType) { // Draw simple xyz-axes for given bounding-box. if (axesType == kAxesNone) return; static const Float_t axesColors[][4] = { {0.5, 0.0, 0.0, 1.0}, // -ive X axis light red {1.0, 0.0, 0.0, 1.0}, // +ive X axis deep red {0.0, 0.5, 0.0, 1.0}, // -ive Y axis light green {0.0, 1.0, 0.0, 1.0}, // +ive Y axis deep green {0.0, 0.0, 0.5, 1.0}, // -ive Z axis light blue {0.0, 0.0, 1.0, 1.0} // +ive Z axis deep blue }; static const UChar_t xyz[][8] = { {0x44, 0x44, 0x28, 0x10, 0x10, 0x28, 0x44, 0x44}, {0x10, 0x10, 0x10, 0x10, 0x10, 0x28, 0x44, 0x44}, {0x7c, 0x20, 0x10, 0x10, 0x08, 0x08, 0x04, 0x7c} }; // Axes draw at fixed screen size - back project to world TGLVector3 pixelVector = camera.ViewportDeltaToWorld(bbox.Center(), 1, 1); Double_t pixelSize = pixelVector.Mag(); // Find x/y/z min/max values Double_t min[3] = { bbox.XMin(), bbox.YMin(), bbox.ZMin() }; Double_t max[3] = { bbox.XMax(), bbox.YMax(), bbox.ZMax() }; for (UInt_t i = 0; i < 3; i++) { TGLVertex3 start; TGLVector3 vector; if (axesType == kAxesOrigin) { // Through origin axes start[(i+1)%3] = 0.0; start[(i+2)%3] = 0.0; } else { // Side axes start[(i+1)%3] = min[(i+1)%3]; start[(i+2)%3] = min[(i+2)%3]; } vector[(i+1)%3] = 0.0; vector[(i+2)%3] = 0.0; // -ive axis? if (min[i] < 0.0) { // Runs from origin? if (max[i] > 0.0) { start[i] = 0.0; vector[i] = min[i]; } else { start[i] = max[i]; vector[i] = min[i] - max[i]; } DrawLine(start, vector, kLineHeadNone, pixelSize*2.5, axesColors[i*2]); } // +ive axis? if (max[i] > 0.0) { // Runs from origin? if (min[i] < 0.0) { start[i] = 0.0; vector[i] = max[i]; } else { start[i] = min[i]; vector[i] = max[i] - min[i]; } DrawLine(start, vector, kLineHeadNone, pixelSize*2.5, axesColors[i*2 + 1]); } } // Draw origin sphere(s) if (axesType == kAxesOrigin) { // Single white origin sphere at 0, 0, 0 Float_t white[4] = { 1.0, 1.0, 1.0, 1.0 }; DrawSphere(TGLVertex3(0.0, 0.0, 0.0), pixelSize*2.0, white); } else { for (UInt_t j = 0; j < 3; j++) { if (min[j] <= 0.0 && max[j] >= 0.0) { TGLVertex3 zero; zero[j] = 0.0; zero[(j+1)%3] = min[(j+1)%3]; zero[(j+2)%3] = min[(j+2)%3]; DrawSphere(zero, pixelSize*2.0, axesColors[j*2 + 1]); } } } glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Labels Double_t padPixels = 25.0; glDisable(GL_LIGHTING); for (UInt_t k = 0; k < 3; k++) { SetDrawColors(axesColors[k*2+1]); TGLVertex3 minPos, maxPos; if (axesType == kAxesOrigin) { minPos[(k+1)%3] = 0.0; minPos[(k+2)%3] = 0.0; } else { minPos[(k+1)%3] = min[(k+1)%3]; minPos[(k+2)%3] = min[(k+2)%3]; } maxPos = minPos; minPos[k] = min[k]; maxPos[k] = max[k]; TGLVector3 axis = maxPos - minPos; TGLVector3 axisViewport = camera.WorldDeltaToViewport(minPos, axis); // Skip drawning if viewport projection of axis very small - labels will overlap // Occurs with orthographic cameras if (axisViewport.Mag() < 1) { continue; } minPos -= camera.ViewportDeltaToWorld(minPos, padPixels*axisViewport.X()/axisViewport.Mag(), padPixels*axisViewport.Y()/axisViewport.Mag()); axisViewport = camera.WorldDeltaToViewport(maxPos, -axis); maxPos -= camera.ViewportDeltaToWorld(maxPos, padPixels*axisViewport.X()/axisViewport.Mag(), padPixels*axisViewport.Y()/axisViewport.Mag()); DrawNumber(Form("%.0f", min[k]), minPos, kTRUE); // Min value DrawNumber(Form("%.0f", max[k]), maxPos, kTRUE); // Max value // Axis name beside max value TGLVertex3 namePos = maxPos - camera.ViewportDeltaToWorld(maxPos, padPixels*axisViewport.X()/axisViewport.Mag(), padPixels*axisViewport.Y()/axisViewport.Mag()); glRasterPos3dv(namePos.CArr()); glBitmap(8, 8, 0.0, 4.0, 0.0, 0.0, xyz[k]); // Axis Name } } //______________________________________________________________________________ void TGLUtil::DrawNumber(const TString & num, const TGLVertex3 & pos, Bool_t center) { // Draw number in string 'num' via internal 8x8-pixel bitmap on // vertex 'pos'. If 'center' is true, the number is centered on 'pos'. // Only numbers, '.', '-' and ' ' are supported. static const UChar_t digits[][8] = { {0x38, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x38},//0 {0x10, 0x10, 0x10, 0x10, 0x10, 0x70, 0x10, 0x10},//1 {0x7c, 0x44, 0x20, 0x18, 0x04, 0x04, 0x44, 0x38},//2 {0x38, 0x44, 0x04, 0x04, 0x18, 0x04, 0x44, 0x38},//3 {0x04, 0x04, 0x04, 0x04, 0x7c, 0x44, 0x44, 0x44},//4 {0x7c, 0x44, 0x04, 0x04, 0x7c, 0x40, 0x40, 0x7c},//5 {0x7c, 0x44, 0x44, 0x44, 0x7c, 0x40, 0x40, 0x7c},//6 {0x20, 0x20, 0x20, 0x10, 0x08, 0x04, 0x44, 0x7c},//7 {0x38, 0x44, 0x44, 0x44, 0x38, 0x44, 0x44, 0x38},//8 {0x7c, 0x44, 0x04, 0x04, 0x7c, 0x44, 0x44, 0x7c},//9 {0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},//. {0x00, 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00},//- {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} //space }; Double_t xOffset = 0, yOffset = 0; if (center) { xOffset = 3.5 * num.Length(); yOffset = 4.0; } glRasterPos3dv(pos.CArr()); for (Ssiz_t i = 0, e = num.Length(); i < e; ++i) { if (num[i] == '.') { glBitmap(8, 8, xOffset, yOffset, 7.0, 0.0, digits[10]); } else if (num[i] == '-') { glBitmap(8, 8, xOffset, yOffset, 7.0, 0.0, digits[11]); } else if (num[i] == ' ') { glBitmap(8, 8, xOffset, yOffset, 7.0, 0.0, digits[12]); } else if (num[i] >= '0' && num[i] <= '9') { glBitmap(8, 8, xOffset, yOffset, 7.0, 0.0, digits[num[i] - '0']); } } } /**************************************************************************/ /**************************************************************************/ //______________________________________________________________________________ TGLCapabilitySwitch::TGLCapabilitySwitch(Int_t what, Bool_t state) : fWhat(what) { // Constructor - change state only if necessary. fState = glIsEnabled(fWhat); fFlip = (fState != state); if (fFlip) SetState(state); } //______________________________________________________________________________ TGLCapabilitySwitch::~TGLCapabilitySwitch() { // Destructor - reset state if changed. if (fFlip) SetState(fState); } //______________________________________________________________________________ void TGLCapabilitySwitch::SetState(Bool_t s) { if (s) glEnable (fWhat); else glDisable(fWhat); } //______________________________________________________________________________ TGLFloatHolder::TGLFloatHolder(Int_t what, Float_t state, void (*foo)(Float_t)) : fWhat(what), fState(0), fFlip(kFALSE), fFoo(foo) { glGetFloatv(fWhat, &fState); fFlip = (fState != state); if (fFlip) fFoo(state); } //______________________________________________________________________________ TGLFloatHolder::~TGLFloatHolder() { if (fFlip) fFoo(fState); } //______________________________________________________________________________ TGLEnableGuard::TGLEnableGuard(Int_t cap) : fCap(cap) { // TGLEnableGuard constructor. glEnable(GLenum(fCap)); } //______________________________________________________________________________ TGLEnableGuard::~TGLEnableGuard() { // TGLEnableGuard destructor. glDisable(GLenum(fCap)); } //______________________________________________________________________________ TGLDisableGuard::TGLDisableGuard(Int_t cap) : fCap(cap) { // TGLDisableGuard constructor. glDisable(GLenum(fCap)); } //______________________________________________________________________________ TGLDisableGuard::~TGLDisableGuard() { // TGLDisableGuard destructor. glEnable(GLenum(fCap)); } ClassImp(TGLSelectionBuffer); //______________________________________________________________________________ TGLSelectionBuffer::TGLSelectionBuffer() : fWidth(0) { // TGLSelectionBuffer constructor. } //______________________________________________________________________________ TGLSelectionBuffer::~TGLSelectionBuffer() { // TGLSelectionBuffer destructor. } //______________________________________________________________________________ void TGLSelectionBuffer::ReadColorBuffer(Int_t w, Int_t h) { // Read color buffer. fWidth = w; fHeight = h; fBuffer.resize(w * h * 4); glPixelStorei(GL_PACK_ALIGNMENT, 1); glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, &fBuffer[0]); } //______________________________________________________________________________ void TGLSelectionBuffer::ReadColorBuffer(Int_t x, Int_t y, Int_t w, Int_t h) { // Read color buffer. fWidth = w; fHeight = h; fBuffer.resize(w * h * 4); glPixelStorei(GL_PACK_ALIGNMENT, 1); glReadPixels(x, y, w, h, GL_RGBA, GL_UNSIGNED_BYTE, &fBuffer[0]); } //______________________________________________________________________________ const UChar_t *TGLSelectionBuffer::GetPixelColor(Int_t px, Int_t py)const { // Get pixel color. if (px < 0) px = 0; if (py < 0) py = 0; if (UInt_t(px * fWidth * 4 + py * 4) > fBuffer.size()) return &fBuffer[0]; return &fBuffer[px * fWidth * 4 + py * 4]; } namespace Rgl { const Float_t gRedEmission[] = {1.f, 0.f, 0.f, 1.f}; const Float_t gGreenEmission[] = {0.f, 1.f, 0.f, 1.f}; const Float_t gBlueEmission[] = {0.f, 0.f, 1.f, 1.f}; const Float_t gOrangeEmission[] = {1.f, 0.4f, 0.f, 1.f}; const Float_t gWhiteEmission[] = {1.f, 1.f, 1.f, 1.f}; const Float_t gGrayEmission[] = {0.3f,0.3f, 0.3f,1.f}; const Float_t gNullEmission[] = {0.f, 0.f, 0.f, 1.f}; namespace { struct RGB_t { Int_t fRGB[3]; }; RGB_t gColorTriplets[] = {{{255, 0, 0}}, {{0, 255, 0}}, {{0, 0, 255}}, {{255, 255, 0}}, {{255, 0, 255}}, {{0, 255, 255}}, {{255, 255, 255}}}; Bool_t operator < (const RGB_t &lhs, const RGB_t &rhs) { if (lhs.fRGB[0] < rhs.fRGB[0]) return kTRUE; else if (lhs.fRGB[0] > rhs.fRGB[0]) return kFALSE; else if (lhs.fRGB[1] < rhs.fRGB[1]) return kTRUE; else if (lhs.fRGB[1] > rhs.fRGB[1]) return kFALSE; else if (lhs.fRGB[2] < rhs.fRGB[2]) return kTRUE; return kFALSE; } typedef std::map<Int_t, RGB_t> ColorLookupTable_t; typedef ColorLookupTable_t::const_iterator CLTCI_t; ColorLookupTable_t gObjectIDToColor; typedef std::map<RGB_t, Int_t> ObjectLookupTable_t; typedef ObjectLookupTable_t::const_iterator OLTCI_t; ObjectLookupTable_t gColorToObjectID; } //______________________________________________________________________________ void ObjectIDToColor(Int_t objectID, Bool_t highColor) { //Object id encoded as rgb triplet. if (!highColor) glColor3ub(objectID & 0xff, (objectID & 0xff00) >> 8, (objectID & 0xff0000) >> 16); else { if (!gObjectIDToColor.size()) { //Initialize lookup tables. for (Int_t i = 0, id = 1; i < Int_t(sizeof gColorTriplets / sizeof(RGB_t)); ++i, ++id) gObjectIDToColor[id] = gColorTriplets[i]; for (Int_t i = 0, id = 1; i < Int_t(sizeof gColorTriplets / sizeof(RGB_t)); ++i, ++id) gColorToObjectID[gColorTriplets[i]] = id; } CLTCI_t it = gObjectIDToColor.find(objectID); if (it != gObjectIDToColor.end()) glColor3ub(it->second.fRGB[0], it->second.fRGB[1], it->second.fRGB[2]); else { Error("ObjectIDToColor", "No color for such object ID: %d", objectID); glColor3ub(0, 0, 0); } } } //______________________________________________________________________________ Int_t ColorToObjectID(const UChar_t *pixel, Bool_t highColor) { if (!highColor) return pixel[0] | (pixel[1] << 8) | (pixel[2] << 16); else { if (!gObjectIDToColor.size()) return 0; RGB_t triplet = {{pixel[0], pixel[1], pixel[2]}}; OLTCI_t it = gColorToObjectID.find(triplet); if (it != gColorToObjectID.end()) return it->second; else return 0; } } //______________________________________________________________________________ void DrawQuadOutline(const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, const TGLVertex3 &v4) { //Draw quad outline. glBegin(GL_LINE_LOOP); glVertex3dv(v1.CArr()); glVertex3dv(v2.CArr()); glVertex3dv(v3.CArr()); glVertex3dv(v4.CArr()); glEnd(); } //______________________________________________________________________________ void DrawQuadFilled(const TGLVertex3 &v0, const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, const TGLVector3 &normal) { //Draw quad face. glBegin(GL_POLYGON); glNormal3dv(normal.CArr()); glVertex3dv(v0.CArr()); glVertex3dv(v1.CArr()); glVertex3dv(v2.CArr()); glVertex3dv(v3.CArr()); glEnd(); } //______________________________________________________________________________ void DrawSmoothFace(const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, const TGLVector3 &norm1, const TGLVector3 &norm2, const TGLVector3 &norm3) { //Draws triangle face, each vertex has its own averaged normal glBegin(GL_POLYGON); glNormal3dv(norm1.CArr()); glVertex3dv(v1.CArr()); glNormal3dv(norm2.CArr()); glVertex3dv(v2.CArr()); glNormal3dv(norm3.CArr()); glVertex3dv(v3.CArr()); glEnd(); } const Int_t gBoxFrontQuads[][4] = {{0, 1, 2, 3}, {4, 0, 3, 5}, {4, 5, 6, 7}, {7, 6, 2, 1}}; const Double_t gBoxFrontNormals[][3] = {{-1., 0., 0.}, {0., -1., 0.}, {1., 0., 0.}, {0., 1., 0.}}; const Int_t gBoxFrontPlanes[][2] = {{0, 1}, {1, 2}, {2, 3}, {3, 0}}; //______________________________________________________________________________ void DrawBoxFront(Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax, Int_t fp) { //Draws lego's bar as a 3d box if (zMax < zMin) std::swap(zMax, zMin); //Bottom is always drawn. glBegin(GL_POLYGON); glNormal3d(0., 0., -1.); glVertex3d(xMax, yMin, zMin); glVertex3d(xMin, yMin, zMin); glVertex3d(xMin, yMax, zMin); glVertex3d(xMax, yMax, zMin); glEnd(); //Draw two visible front planes. const Double_t box[][3] = {{xMin, yMin, zMax}, {xMin, yMax, zMax}, {xMin, yMax, zMin}, {xMin, yMin, zMin}, {xMax, yMin, zMax}, {xMax, yMin, zMin}, {xMax, yMax, zMin}, {xMax, yMax, zMax}}; const Int_t *verts = gBoxFrontQuads[gBoxFrontPlanes[fp][0]]; glBegin(GL_POLYGON); glNormal3dv(gBoxFrontNormals[gBoxFrontPlanes[fp][0]]); glVertex3dv(box[verts[0]]); glVertex3dv(box[verts[1]]); glVertex3dv(box[verts[2]]); glVertex3dv(box[verts[3]]); glEnd(); verts = gBoxFrontQuads[gBoxFrontPlanes[fp][1]]; glBegin(GL_POLYGON); glNormal3dv(gBoxFrontNormals[gBoxFrontPlanes[fp][1]]); glVertex3dv(box[verts[0]]); glVertex3dv(box[verts[1]]); glVertex3dv(box[verts[2]]); glVertex3dv(box[verts[3]]); glEnd(); //Top is always drawn. glBegin(GL_POLYGON); glNormal3d(0., 0., 1.); glVertex3d(xMax, yMin, zMax); glVertex3d(xMax, yMax, zMax); glVertex3d(xMin, yMax, zMax); glVertex3d(xMin, yMin, zMax); glEnd(); } //______________________________________________________________________________ void DrawBoxFrontTextured(Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax, Double_t texMin, Double_t texMax, Int_t fp) { //Draws lego's bar as a 3d box //LULULULU if (zMax < zMin) { std::swap(zMax, zMin); std::swap(texMax, texMin); } //Top and bottom are always drawn. glBegin(GL_POLYGON); glNormal3d(0., 0., 1.); glTexCoord1d(texMax); glVertex3d(xMax, yMin, zMax); glVertex3d(xMax, yMax, zMax); glVertex3d(xMin, yMax, zMax); glVertex3d(xMin, yMin, zMax); glEnd(); glBegin(GL_POLYGON); glTexCoord1d(texMin); glNormal3d(0., 0., -1.); glVertex3d(xMax, yMin, zMin); glVertex3d(xMin, yMin, zMin); glVertex3d(xMin, yMax, zMin); glVertex3d(xMax, yMax, zMin); glEnd(); //Draw two visible front planes. const Double_t box[][3] = {{xMin, yMin, zMax}, {xMin, yMax, zMax}, {xMin, yMax, zMin}, {xMin, yMin, zMin}, {xMax, yMin, zMax}, {xMax, yMin, zMin}, {xMax, yMax, zMin}, {xMax, yMax, zMax}}; const Double_t tex[] = {texMax, texMax, texMin, texMin, texMax, texMin, texMin, texMax}; const Int_t *verts = gBoxFrontQuads[gBoxFrontPlanes[fp][0]]; glBegin(GL_POLYGON); glNormal3dv(gBoxFrontNormals[gBoxFrontPlanes[fp][0]]); glTexCoord1d(tex[verts[0]]); glVertex3dv(box[verts[0]]); glTexCoord1d(tex[verts[1]]); glVertex3dv(box[verts[1]]); glTexCoord1d(tex[verts[2]]); glVertex3dv(box[verts[2]]); glTexCoord1d(tex[verts[3]]); glVertex3dv(box[verts[3]]); glEnd(); verts = gBoxFrontQuads[gBoxFrontPlanes[fp][1]]; glBegin(GL_POLYGON); glNormal3dv(gBoxFrontNormals[gBoxFrontPlanes[fp][1]]); glTexCoord1d(tex[verts[0]]); glVertex3dv(box[verts[0]]); glTexCoord1d(tex[verts[1]]); glVertex3dv(box[verts[1]]); glTexCoord1d(tex[verts[2]]); glVertex3dv(box[verts[2]]); glTexCoord1d(tex[verts[3]]); glVertex3dv(box[verts[3]]); glEnd(); } //______________________________________________________________________________ void DrawCylinder(TGLQuadric *quadric, Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax) { //Cylinder for lego3. GLUquadric *quad = quadric->Get(); if (quad) { if (zMin > zMax) std::swap(zMin, zMax); const Double_t xCenter = xMin + (xMax - xMin) / 2; const Double_t yCenter = yMin + (yMax - yMin) / 2; const Double_t radius = TMath::Min((xMax - xMin) / 2, (yMax - yMin) / 2); glPushMatrix(); glTranslated(xCenter, yCenter, zMin); gluCylinder(quad, radius, radius, zMax - zMin, 40, 1); glPopMatrix(); glPushMatrix(); glTranslated(xCenter, yCenter, zMax); gluDisk(quad, 0., radius, 40, 1); glPopMatrix(); glPushMatrix(); glTranslated(xCenter, yCenter, zMin); glRotated(180., 0., 1., 0.); gluDisk(quad, 0., radius, 40, 1); glPopMatrix(); } } //______________________________________________________________________________ void DrawSphere(TGLQuadric *quadric, Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax) { //Cylinder for lego3. GLUquadric *quad = quadric->Get(); if (quad) { const Double_t xCenter = xMin + (xMax - xMin) / 2; const Double_t yCenter = yMin + (yMax - yMin) / 2; const Double_t zCenter = zMin + (zMax - zMin) / 2; const Double_t radius = TMath::Min((zMax - zMin) / 2, TMath::Min((xMax - xMin) / 2, (yMax - yMin) / 2)); glPushMatrix(); glTranslated(xCenter, yCenter, zCenter); gluSphere(quad, radius, 10, 10); glPopMatrix(); } } //______________________________________________________________________________ void DrawError(Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax) { const Double_t xWid = xMax - xMin; const Double_t yWid = yMax - yMin; glBegin(GL_LINES); glVertex3d(xMin + xWid / 2, yMin + yWid / 2, zMin); glVertex3d(xMin + xWid / 2, yMin + yWid / 2, zMax); glEnd(); glBegin(GL_LINES); glVertex3d(xMin + xWid / 2, yMin, zMin); glVertex3d(xMin + xWid / 2, yMax, zMin); glEnd(); glBegin(GL_LINES); glVertex3d(xMin, yMin + yWid / 2, zMin); glVertex3d(xMax, yMin + yWid / 2, zMin); glEnd(); } void CylindricalNormal(const Double_t *v, Double_t *normal) { const Double_t n = TMath::Sqrt(v[0] * v[0] + v[1] * v[1]); if (n > 0.) { normal[0] = v[0] / n; normal[1] = v[1] / n; normal[2] = 0.; } else { normal[0] = v[0]; normal[1] = v[1]; normal[2] = 0.; } } void CylindricalNormalInv(const Double_t *v, Double_t *normal) { const Double_t n = TMath::Sqrt(v[0] * v[0] + v[1] * v[1]); if (n > 0.) { normal[0] = -v[0] / n; normal[1] = -v[1] / n; normal[2] = 0.; } else { normal[0] = -v[0]; normal[1] = -v[1]; normal[2] = 0.; } } void DrawTrapezoid(const Double_t ver[][2], Double_t zMin, Double_t zMax, Bool_t color) { //In polar coordinates, box became trapezoid. //Four faces need normal calculations. if (zMin > zMax) std::swap(zMin, zMax); //top glBegin(GL_POLYGON); glNormal3d(0., 0., 1.); glVertex3d(ver[0][0], ver[0][1], zMax); glVertex3d(ver[1][0], ver[1][1], zMax); glVertex3d(ver[2][0], ver[2][1], zMax); glVertex3d(ver[3][0], ver[3][1], zMax); glEnd(); //bottom glBegin(GL_POLYGON); glNormal3d(0., 0., -1.); glVertex3d(ver[0][0], ver[0][1], zMin); glVertex3d(ver[3][0], ver[3][1], zMin); glVertex3d(ver[2][0], ver[2][1], zMin); glVertex3d(ver[1][0], ver[1][1], zMin); glEnd(); // Double_t trapezoid[][3] = {{ver[0][0], ver[0][1], zMin}, {ver[1][0], ver[1][1], zMin}, {ver[2][0], ver[2][1], zMin}, {ver[3][0], ver[3][1], zMin}, {ver[0][0], ver[0][1], zMax}, {ver[1][0], ver[1][1], zMax}, {ver[2][0], ver[2][1], zMax}, {ver[3][0], ver[3][1], zMax}}; Double_t normal[3] = {0.}; glBegin(GL_POLYGON); CylindricalNormal(trapezoid[1], normal), glNormal3dv(normal), glVertex3dv(trapezoid[1]); CylindricalNormal(trapezoid[2], normal), glNormal3dv(normal), glVertex3dv(trapezoid[2]); CylindricalNormal(trapezoid[6], normal), glNormal3dv(normal), glVertex3dv(trapezoid[6]); CylindricalNormal(trapezoid[5], normal), glNormal3dv(normal), glVertex3dv(trapezoid[5]); glEnd(); glBegin(GL_POLYGON); CylindricalNormalInv(trapezoid[0], normal), glNormal3dv(normal), glVertex3dv(trapezoid[0]); CylindricalNormalInv(trapezoid[4], normal), glNormal3dv(normal), glVertex3dv(trapezoid[4]); CylindricalNormalInv(trapezoid[7], normal), glNormal3dv(normal), glVertex3dv(trapezoid[7]); CylindricalNormalInv(trapezoid[3], normal), glNormal3dv(normal), glVertex3dv(trapezoid[3]); glEnd(); glBegin(GL_POLYGON); if (color) { TMath::Normal2Plane(trapezoid[0], trapezoid[1], trapezoid[5], normal); glNormal3dv(normal); } glVertex3dv(trapezoid[0]); glVertex3dv(trapezoid[1]); glVertex3dv(trapezoid[5]); glVertex3dv(trapezoid[4]); glEnd(); glBegin(GL_POLYGON); if (color) { TMath::Normal2Plane(trapezoid[3], trapezoid[7], trapezoid[6], normal); glNormal3dv(normal); } glVertex3dv(trapezoid[3]); glVertex3dv(trapezoid[7]); glVertex3dv(trapezoid[6]); glVertex3dv(trapezoid[2]); glEnd(); } //______________________________________________________________________________ void DrawTrapezoidTextured(const Double_t ver[][2], Double_t zMin, Double_t zMax, Double_t texMin, Double_t texMax) { //In polar coordinates, box became trapezoid. //Four faces need normal calculations. if (zMin > zMax) { std::swap(zMin, zMax); std::swap(texMin, texMax); } //top glBegin(GL_POLYGON); glNormal3d(0., 0., 1.); glTexCoord1d(texMax); glVertex3d(ver[0][0], ver[0][1], zMax); glVertex3d(ver[1][0], ver[1][1], zMax); glVertex3d(ver[2][0], ver[2][1], zMax); glVertex3d(ver[3][0], ver[3][1], zMax); glEnd(); //bottom glBegin(GL_POLYGON); glNormal3d(0., 0., -1.); glTexCoord1d(texMin); glVertex3d(ver[0][0], ver[0][1], zMin); glVertex3d(ver[3][0], ver[3][1], zMin); glVertex3d(ver[2][0], ver[2][1], zMin); glVertex3d(ver[1][0], ver[1][1], zMin); glEnd(); // Double_t trapezoid[][3] = {{ver[0][0], ver[0][1], zMin}, {ver[1][0], ver[1][1], zMin}, {ver[2][0], ver[2][1], zMin}, {ver[3][0], ver[3][1], zMin}, {ver[0][0], ver[0][1], zMax}, {ver[1][0], ver[1][1], zMax}, {ver[2][0], ver[2][1], zMax}, {ver[3][0], ver[3][1], zMax}}; Double_t normal[3] = {0.}; glBegin(GL_POLYGON); CylindricalNormal(trapezoid[1], normal), glNormal3dv(normal), glTexCoord1d(texMin), glVertex3dv(trapezoid[1]); CylindricalNormal(trapezoid[2], normal), glNormal3dv(normal), glTexCoord1d(texMin), glVertex3dv(trapezoid[2]); CylindricalNormal(trapezoid[6], normal), glNormal3dv(normal), glTexCoord1d(texMax), glVertex3dv(trapezoid[6]); CylindricalNormal(trapezoid[5], normal), glNormal3dv(normal), glTexCoord1d(texMax), glVertex3dv(trapezoid[5]); glEnd(); glBegin(GL_POLYGON); CylindricalNormalInv(trapezoid[0], normal), glNormal3dv(normal), glTexCoord1d(texMin), glVertex3dv(trapezoid[0]); CylindricalNormalInv(trapezoid[4], normal), glNormal3dv(normal), glTexCoord1d(texMax), glVertex3dv(trapezoid[4]); CylindricalNormalInv(trapezoid[7], normal), glNormal3dv(normal), glTexCoord1d(texMax), glVertex3dv(trapezoid[7]); CylindricalNormalInv(trapezoid[3], normal), glNormal3dv(normal), glTexCoord1d(texMin), glVertex3dv(trapezoid[3]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(trapezoid[0], trapezoid[1], trapezoid[5], normal); glNormal3dv(normal); glTexCoord1d(texMin); glVertex3dv(trapezoid[0]); glTexCoord1d(texMin); glVertex3dv(trapezoid[1]); glTexCoord1d(texMax); glVertex3dv(trapezoid[5]); glTexCoord1d(texMax); glVertex3dv(trapezoid[4]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(trapezoid[3], trapezoid[7], trapezoid[6], normal); glNormal3dv(normal); glTexCoord1d(texMin); glVertex3dv(trapezoid[3]); glTexCoord1d(texMax); glVertex3dv(trapezoid[7]); glTexCoord1d(texMax); glVertex3dv(trapezoid[6]); glTexCoord1d(texMin); glVertex3dv(trapezoid[2]); glEnd(); } //______________________________________________________________________________ void DrawTrapezoidTextured2(const Double_t ver[][2], Double_t zMin, Double_t zMax, Double_t texMin, Double_t texMax) { //In polar coordinates, box became trapezoid. if (zMin > zMax) std::swap(zMin, zMax); const Double_t trapezoid[][3] = {{ver[0][0], ver[0][1], zMin}, {ver[1][0], ver[1][1], zMin}, {ver[2][0], ver[2][1], zMin}, {ver[3][0], ver[3][1], zMin}, {ver[0][0], ver[0][1], zMax}, {ver[1][0], ver[1][1], zMax}, {ver[2][0], ver[2][1], zMax}, {ver[3][0], ver[3][1], zMax}}; const Double_t tex[] = {texMin, texMax, texMax, texMin, texMin, texMax, texMax, texMin}; //top glBegin(GL_POLYGON); glNormal3d(0., 0., 1.); glTexCoord1d(tex[4]), glVertex3dv(trapezoid[4]); glTexCoord1d(tex[5]), glVertex3dv(trapezoid[5]); glTexCoord1d(tex[6]), glVertex3dv(trapezoid[6]); glTexCoord1d(tex[7]), glVertex3dv(trapezoid[7]); glEnd(); //bottom glBegin(GL_POLYGON); glNormal3d(0., 0., -1.); glTexCoord1d(tex[0]), glVertex3dv(trapezoid[0]); glTexCoord1d(tex[3]), glVertex3dv(trapezoid[3]); glTexCoord1d(tex[2]), glVertex3dv(trapezoid[2]); glTexCoord1d(tex[1]), glVertex3dv(trapezoid[1]); glEnd(); // glBegin(GL_POLYGON); Double_t normal[3] = {}; CylindricalNormal(trapezoid[1], normal), glNormal3dv(normal), glTexCoord1d(tex[1]), glVertex3dv(trapezoid[1]); CylindricalNormal(trapezoid[2], normal), glNormal3dv(normal), glTexCoord1d(tex[2]), glVertex3dv(trapezoid[2]); CylindricalNormal(trapezoid[6], normal), glNormal3dv(normal), glTexCoord1d(tex[6]), glVertex3dv(trapezoid[6]); CylindricalNormal(trapezoid[5], normal), glNormal3dv(normal), glTexCoord1d(tex[5]), glVertex3dv(trapezoid[5]); glEnd(); glBegin(GL_POLYGON); CylindricalNormalInv(trapezoid[0], normal), glNormal3dv(normal), glTexCoord1d(tex[0]), glVertex3dv(trapezoid[0]); CylindricalNormalInv(trapezoid[4], normal), glNormal3dv(normal), glTexCoord1d(tex[4]), glVertex3dv(trapezoid[4]); CylindricalNormalInv(trapezoid[7], normal), glNormal3dv(normal), glTexCoord1d(tex[7]), glVertex3dv(trapezoid[7]); CylindricalNormalInv(trapezoid[3], normal), glNormal3dv(normal), glTexCoord1d(tex[3]), glVertex3dv(trapezoid[3]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(trapezoid[0], trapezoid[1], trapezoid[5], normal); glNormal3dv(normal); glTexCoord1d(tex[0]), glVertex3dv(trapezoid[0]); glTexCoord1d(tex[1]), glVertex3dv(trapezoid[1]); glTexCoord1d(tex[5]), glVertex3dv(trapezoid[5]); glTexCoord1d(tex[4]), glVertex3dv(trapezoid[4]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(trapezoid[3], trapezoid[7], trapezoid[6], normal); glNormal3dv(normal); glTexCoord1d(tex[3]), glVertex3dv(trapezoid[3]); glTexCoord1d(tex[7]), glVertex3dv(trapezoid[7]); glTexCoord1d(tex[6]), glVertex3dv(trapezoid[6]); glTexCoord1d(tex[2]), glVertex3dv(trapezoid[2]); glEnd(); } //______________________________________________________________________________ void SphericalNormal(const Double_t *v, Double_t *normal) { const Double_t n = TMath::Sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]); if (n > 0.) { normal[0] = v[0] / n; normal[1] = v[1] / n; normal[2] = v[2] / n; } else { normal[0] = v[0]; normal[1] = v[1]; normal[2] = v[2]; } } //______________________________________________________________________________ void SphericalNormalInv(const Double_t *v, Double_t *normal) { const Double_t n = TMath::Sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]); if (n > 0.) { normal[0] = -v[0] / n; normal[1] = -v[1] / n; normal[2] = -v[2] / n; } else { normal[0] = -v[0]; normal[1] = -v[1]; normal[2] = -v[2]; } } //______________________________________________________________________________ void DrawTrapezoid(const Double_t ver[][3]) { Double_t normal[3] = {0.}; glBegin(GL_POLYGON); TMath::Normal2Plane(ver[1], ver[2], ver[3], normal); glNormal3dv(normal); glVertex3dv(ver[0]); glVertex3dv(ver[1]); glVertex3dv(ver[2]); glVertex3dv(ver[3]); glEnd(); //bottom glBegin(GL_POLYGON); TMath::Normal2Plane(ver[4], ver[7], ver[6], normal); glNormal3dv(normal); glVertex3dv(ver[4]); glVertex3dv(ver[7]); glVertex3dv(ver[6]); glVertex3dv(ver[5]); glEnd(); // glBegin(GL_POLYGON); TMath::Normal2Plane(ver[0], ver[3], ver[7], normal); glNormal3dv(normal); glVertex3dv(ver[0]); glVertex3dv(ver[3]); glVertex3dv(ver[7]); glVertex3dv(ver[4]); glEnd(); glBegin(GL_POLYGON); SphericalNormal(ver[3], normal), glNormal3dv(normal), glVertex3dv(ver[3]); SphericalNormal(ver[2], normal), glNormal3dv(normal), glVertex3dv(ver[2]); SphericalNormal(ver[6], normal), glNormal3dv(normal), glVertex3dv(ver[6]); SphericalNormal(ver[7], normal), glNormal3dv(normal), glVertex3dv(ver[7]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(ver[5], ver[6], ver[2], normal); glNormal3dv(normal); glVertex3dv(ver[5]); glVertex3dv(ver[6]); glVertex3dv(ver[2]); glVertex3dv(ver[1]); glEnd(); glBegin(GL_POLYGON); SphericalNormalInv(ver[0], normal), glNormal3dv(normal), glVertex3dv(ver[0]); SphericalNormalInv(ver[4], normal), glNormal3dv(normal), glVertex3dv(ver[4]); SphericalNormalInv(ver[5], normal), glNormal3dv(normal), glVertex3dv(ver[5]); SphericalNormalInv(ver[1], normal), glNormal3dv(normal), glVertex3dv(ver[1]); glEnd(); } //______________________________________________________________________________ void DrawTrapezoidTextured(const Double_t ver[][3], Double_t texMin, Double_t texMax) { Double_t normal[3] = {}; if (texMin > texMax) std::swap(texMin, texMax); const Double_t tex[] = {texMin, texMin, texMax, texMax, texMin, texMin, texMax, texMax}; glBegin(GL_POLYGON); TMath::Normal2Plane(ver[0], ver[1], ver[2], normal); glNormal3dv(normal); glTexCoord1d(tex[0]), glVertex3dv(ver[0]); glTexCoord1d(tex[1]), glVertex3dv(ver[1]); glTexCoord1d(tex[2]), glVertex3dv(ver[2]); glTexCoord1d(tex[3]), glVertex3dv(ver[3]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(ver[4], ver[7], ver[6], normal); glNormal3dv(normal); glTexCoord1d(tex[4]), glVertex3dv(ver[4]); glTexCoord1d(tex[7]), glVertex3dv(ver[7]); glTexCoord1d(tex[6]), glVertex3dv(ver[6]); glTexCoord1d(tex[5]), glVertex3dv(ver[5]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(ver[0], ver[3], ver[7], normal); glNormal3dv(normal); glTexCoord1d(tex[0]), glVertex3dv(ver[0]); glTexCoord1d(tex[3]), glVertex3dv(ver[3]); glTexCoord1d(tex[7]), glVertex3dv(ver[7]); glTexCoord1d(tex[4]), glVertex3dv(ver[4]); glEnd(); glBegin(GL_POLYGON); SphericalNormal(ver[3], normal), glNormal3dv(normal), glTexCoord1d(tex[3]), glVertex3dv(ver[3]); SphericalNormal(ver[2], normal), glNormal3dv(normal), glTexCoord1d(tex[2]), glVertex3dv(ver[2]); SphericalNormal(ver[6], normal), glNormal3dv(normal), glTexCoord1d(tex[6]), glVertex3dv(ver[6]); SphericalNormal(ver[7], normal), glNormal3dv(normal), glTexCoord1d(tex[7]), glVertex3dv(ver[7]); glEnd(); glBegin(GL_POLYGON); TMath::Normal2Plane(ver[5], ver[6], ver[2], normal); glNormal3dv(normal); glTexCoord1d(tex[5]), glVertex3dv(ver[5]); glTexCoord1d(tex[6]), glVertex3dv(ver[6]); glTexCoord1d(tex[2]), glVertex3dv(ver[2]); glTexCoord1d(tex[1]), glVertex3dv(ver[1]); glEnd(); glBegin(GL_POLYGON); SphericalNormalInv(ver[0], normal), glNormal3dv(normal), glTexCoord1d(tex[0]), glVertex3dv(ver[0]); SphericalNormalInv(ver[4], normal), glNormal3dv(normal), glTexCoord1d(tex[4]), glVertex3dv(ver[4]); SphericalNormalInv(ver[5], normal), glNormal3dv(normal), glTexCoord1d(tex[5]), glVertex3dv(ver[5]); SphericalNormalInv(ver[1], normal), glNormal3dv(normal), glTexCoord1d(tex[1]), glVertex3dv(ver[1]); glEnd(); } void Draw2DAxis(TAxis *axis, Double_t xMin, Double_t yMin, Double_t xMax, Double_t yMax, Double_t min, Double_t max, Bool_t log, Bool_t z = kFALSE) { //Axes are drawn with help of TGaxis class std::string option; option.reserve(20); if (xMin > xMax || z) option += "SDH=+"; else option += "SDH=-"; if (log) option += 'G'; Int_t nDiv = axis->GetNdivisions(); if (nDiv < 0) { option += 'N'; nDiv = -nDiv; } TGaxis axisPainter; axisPainter.SetLineWidth(1); static const Double_t zero = 0.001; if (TMath::Abs(xMax - xMin) >= zero || TMath::Abs(yMax - yMin) >= zero) { axisPainter.ImportAxisAttributes(axis); axisPainter.SetLabelOffset(axis->GetLabelOffset() + axis->GetTickLength()); if (log) { min = TMath::Power(10, min); max = TMath::Power(10, max); } //Option time display is required ? if (axis->GetTimeDisplay()) { option += 't'; if (!strlen(axis->GetTimeFormatOnly())) axisPainter.SetTimeFormat(axis->ChooseTimeFormat(max - min)); else axisPainter.SetTimeFormat(axis->GetTimeFormat()); } axisPainter.SetOption(option.c_str()); axisPainter.PaintAxis(xMin, yMin, xMax, yMax, min, max, nDiv, option.c_str()); } } const Int_t gFramePoints[][2] = {{3, 1}, {0, 2}, {1, 3}, {2, 0}}; //Each point has two "neighbouring axes" (left and right). Axes types are 1 (ordinata) and 0 (abscissa) const Int_t gAxisType[][2] = {{1, 0}, {0, 1}, {1, 0}, {0, 1}}; //______________________________________________________________________________ void DrawAxes(Int_t fp, const Int_t *vp, const TGLVertex3 *box, const TGLPlotCoordinates *coord, TAxis *xAxis, TAxis *yAxis, TAxis *zAxis) { //Using front point, find, where to draw axes and which labels to use for them //gVirtualX->SelectWindow(gGLManager->GetVirtualXInd(fGLDevice)); //gVirtualX->SetDrawMode(TVirtualX::kCopy);//TCanvas by default sets in kInverse const Int_t left = gFramePoints[fp][0]; const Int_t right = gFramePoints[fp][1]; const Double_t xLeft = gPad->AbsPixeltoX(Int_t(gPad->GetXlowNDC() * gPad->GetWw() + box[left].X() - vp[0])); const Double_t yLeft = gPad->AbsPixeltoY(Int_t(vp[3] - box[left].Y() + (1 - gPad->GetHNDC() - gPad->GetYlowNDC()) * gPad->GetWh() + vp[1])); const Double_t xMid = gPad->AbsPixeltoX(Int_t(gPad->GetXlowNDC() * gPad->GetWw() + box[fp].X() - vp[0])); const Double_t yMid = gPad->AbsPixeltoY(Int_t(vp[3] - box[fp].Y() + (1 - gPad->GetHNDC() - gPad->GetYlowNDC()) * gPad->GetWh() + vp[1])); const Double_t xRight = gPad->AbsPixeltoX(Int_t(gPad->GetXlowNDC() * gPad->GetWw() + box[right].X() - vp[0])); const Double_t yRight = gPad->AbsPixeltoY(Int_t(vp[3] - box[right].Y() + (1 - gPad->GetHNDC() - gPad->GetYlowNDC()) * gPad->GetWh() + vp[1])); const Double_t points[][2] = {{coord->GetXRange().first, coord->GetYRange().first }, {coord->GetXRange().second, coord->GetYRange().first }, {coord->GetXRange().second, coord->GetYRange().second}, {coord->GetXRange().first, coord->GetYRange().second}}; const Int_t leftType = gAxisType[fp][0]; const Int_t rightType = gAxisType[fp][1]; const Double_t leftLabel = points[left][leftType]; const Double_t leftMidLabel = points[fp][leftType]; const Double_t rightMidLabel = points[fp][rightType]; const Double_t rightLabel = points[right][rightType]; if (xLeft - xMid || yLeft - yMid) {//To supress error messages from TGaxis TAxis *axis = leftType ? yAxis : xAxis; if (leftLabel < leftMidLabel) Draw2DAxis(axis, xLeft, yLeft, xMid, yMid, leftLabel, leftMidLabel, leftType ? coord->GetYLog() : coord->GetXLog()); else Draw2DAxis(axis, xMid, yMid, xLeft, yLeft, leftMidLabel, leftLabel, leftType ? coord->GetYLog() : coord->GetXLog()); } if (xRight - xMid || yRight - yMid) {//To supress error messages from TGaxis TAxis *axis = rightType ? yAxis : xAxis; if (rightMidLabel < rightLabel) Draw2DAxis(axis, xMid, yMid, xRight, yRight, rightMidLabel, rightLabel, rightType ? coord->GetYLog() : coord->GetXLog()); else Draw2DAxis(axis, xRight, yRight, xMid, yMid, rightLabel, rightMidLabel, rightType ? coord->GetYLog() : coord->GetXLog()); } const Double_t xUp = gPad->AbsPixeltoX(Int_t(gPad->GetXlowNDC() * gPad->GetWw() + box[left + 4].X() - vp[0])); const Double_t yUp = gPad->AbsPixeltoY(Int_t(vp[3] - box[left + 4].Y() + (1 - gPad->GetHNDC() - gPad->GetYlowNDC()) * gPad->GetWh() + vp[1])); Draw2DAxis(zAxis, xLeft, yLeft, xUp, yUp, coord->GetZRange().first, coord->GetZRange().second, coord->GetZLog(), kTRUE); } void SetZLevels(TAxis *zAxis, Double_t zMin, Double_t zMax, Double_t zScale, std::vector<Double_t> &zLevels) { Int_t nDiv = zAxis->GetNdivisions() % 100; Int_t nBins = 0; Double_t binLow = 0., binHigh = 0., binWidth = 0.; THLimitsFinder::Optimize(zMin, zMax, nDiv, binLow, binHigh, nBins, binWidth, " "); zLevels.resize(nBins + 1); for (Int_t i = 0; i < nBins + 1; ++i) zLevels[i] = (binLow + i * binWidth) * zScale; } //______________________________________________________________________________ void DrawFaceTextured(const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, Double_t t1, Double_t t2, Double_t t3, const TGLVector3 &norm1, const TGLVector3 &norm2, const TGLVector3 &norm3) { //Draw textured triangle glBegin(GL_POLYGON); glNormal3dv(norm1.CArr()); glTexCoord1d(t1); glVertex3dv(v1.CArr()); glNormal3dv(norm2.CArr()); glTexCoord1d(t2); glVertex3dv(v2.CArr()); glNormal3dv(norm3.CArr()); glTexCoord1d(t3); glVertex3dv(v3.CArr()); glEnd(); } //______________________________________________________________________________ void DrawFaceTextured(const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, Double_t t1, Double_t t2, Double_t t3, Double_t z, const TGLVector3 &normal) { //Draw textured triangle on a plane glBegin(GL_POLYGON); glNormal3dv(normal.CArr()); glTexCoord1d(t1); glVertex3d(v1.X(), v1.Y(), z); glTexCoord1d(t2); glVertex3d(v2.X(), v2.Y(), z); glTexCoord1d(t3); glVertex3d(v3.X(), v3.Y(), z); glEnd(); } //______________________________________________________________________________ void GetColor(Float_t v, Float_t vmin, Float_t vmax, Int_t type, Float_t *rgba) { //This function creates color for parametric surface's vertex, //using its 'u' value. //I've found it in one of Apple's Carbon tutorials , and it's based //on Paul Bourke work. Very nice colors!!! :) Float_t dv,vmid; //Float_t c[] = {1.f, 1.f, 1.f}; Float_t c1[3] = {}, c2[3] = {}, c3[3] = {}; Float_t ratio ; rgba[3] = 1.f; if (v < vmin) v = vmin; if (v > vmax) v = vmax; dv = vmax - vmin; switch (type) { case 0: rgba[0] = 1.f; rgba[1] = 1.f; rgba[2] = 1.f; break; case 1: if (v < (vmin + 0.25 * dv)) { rgba[0] = 0; rgba[1] = 4 * (v - vmin) / dv; rgba[2] = 1; } else if (v < (vmin + 0.5 * dv)) { rgba[0] = 0; rgba[1] = 1; rgba[2] = 1 + 4 * (vmin + 0.25 * dv - v) / dv; } else if (v < (vmin + 0.75 * dv)) { rgba[0] = 4 * (v - vmin - 0.5 * dv) / dv; rgba[1] = 1; rgba[2] = 0; } else { rgba[0] = 1; rgba[1] = 1 + 4 * (vmin + 0.75 * dv - v) / dv; rgba[2] = 0; } break; case 2: rgba[0] = (v - vmin) / dv; rgba[1] = 0; rgba[2] = (vmax - v) / dv; break; case 3: rgba[0] = (v - vmin) / dv; rgba[1] = rgba[0]; rgba[2] = rgba[0]; break; case 4: if (v < (vmin + dv / 6.0)) { rgba[0] = 1; rgba[1] = 6 * (v - vmin) / dv; rgba[2] = 0; } else if (v < (vmin + 2.0 * dv / 6.0)) { rgba[0] = 1 + 6 * (vmin + dv / 6.0 - v) / dv; rgba[1] = 1; rgba[2] = 0; } else if (v < (vmin + 3.0 * dv / 6.0)) { rgba[0] = 0; rgba[1] = 1; rgba[2] = 6 * (v - vmin - 2.0 * dv / 6.0) / dv; } else if (v < (vmin + 4.0 * dv / 6.0)) { rgba[0] = 0; rgba[1] = 1 + 6 * (vmin + 3.0 * dv / 6.0 - v) / dv; rgba[2] = 1; } else if (v < (vmin + 5.0 * dv / 6.0)) { rgba[0] = 6 * (v - vmin - 4.0 * dv / 6.0) / dv; rgba[1] = 0; rgba[2] = 1; } else { rgba[0] = 1; rgba[1] = 0; rgba[2] = 1 + 6 * (vmin + 5.0 * dv / 6.0 - v) / dv; } break; case 5: rgba[0] = (v - vmin) / (vmax - vmin); rgba[1] = 1; rgba[2] = 0; break; case 6: rgba[0] = (v - vmin) / (vmax - vmin); rgba[1] = (vmax - v) / (vmax - vmin); rgba[2] = rgba[0]; break; case 7: if (v < (vmin + 0.25 * dv)) { rgba[0] = 0; rgba[1] = 4 * (v - vmin) / dv; rgba[2] = 1 - rgba[1]; } else if (v < (vmin + 0.5 * dv)) { rgba[0] = 4 * (v - vmin - 0.25 * dv) / dv; rgba[1] = 1 - rgba[0]; rgba[2] = 0; } else if (v < (vmin + 0.75 * dv)) { rgba[1] = 4 * (v - vmin - 0.5 * dv) / dv; rgba[0] = 1 - rgba[1]; rgba[2] = 0; } else { rgba[0] = 0; rgba[2] = 4 * (v - vmin - 0.75 * dv) / dv; rgba[1] = 1 - rgba[2]; } break; case 8: if (v < (vmin + 0.5 * dv)) { rgba[0] = 2 * (v - vmin) / dv; rgba[1] = rgba[0]; rgba[2] = rgba[0]; } else { rgba[0] = 1 - 2 * (v - vmin - 0.5 * dv) / dv; rgba[1] = rgba[0]; rgba[2] = rgba[0]; } break; case 9: if (v < (vmin + dv / 3)) { rgba[2] = 3 * (v - vmin) / dv; rgba[1] = 0; rgba[0] = 1 - rgba[2]; } else if (v < (vmin + 2 * dv / 3)) { rgba[0] = 0; rgba[1] = 3 * (v - vmin - dv / 3) / dv; rgba[2] = 1; } else { rgba[0] = 3 * (v - vmin - 2 * dv / 3) / dv; rgba[1] = 1 - rgba[0]; rgba[2] = 1; } break; case 10: if (v < (vmin + 0.2 * dv)) { rgba[0] = 0; rgba[1] = 5 * (v - vmin) / dv; rgba[2] = 1; } else if (v < (vmin + 0.4 * dv)) { rgba[0] = 0; rgba[1] = 1; rgba[2] = 1 + 5 * (vmin + 0.2 * dv - v) / dv; } else if (v < (vmin + 0.6 * dv)) { rgba[0] = 5 * (v - vmin - 0.4 * dv) / dv; rgba[1] = 1; rgba[2] = 0; } else if (v < (vmin + 0.8 * dv)) { rgba[0] = 1; rgba[1] = 1 - 5 * (v - vmin - 0.6 * dv) / dv; rgba[2] = 0; } else { rgba[0] = 1; rgba[1] = 5 * (v - vmin - 0.8 * dv) / dv; rgba[2] = 5 * (v - vmin - 0.8 * dv) / dv; } break; case 11: c1[0] = 200 / 255.0; c1[1] = 60 / 255.0; c1[2] = 0 / 255.0; c2[0] = 250 / 255.0; c2[1] = 160 / 255.0; c2[2] = 110 / 255.0; rgba[0] = (c2[0] - c1[0]) * (v - vmin) / dv + c1[0]; rgba[1] = (c2[1] - c1[1]) * (v - vmin) / dv + c1[1]; rgba[2] = (c2[2] - c1[2]) * (v - vmin) / dv + c1[2]; break; case 12: c1[0] = 55 / 255.0; c1[1] = 55 / 255.0; c1[2] = 45 / 255.0; c2[0] = 200 / 255.0; c2[1] = 60 / 255.0; c2[2] = 0 / 255.0; c3[0] = 250 / 255.0; c3[1] = 160 / 255.0; c3[2] = 110 / 255.0; ratio = 0.4; vmid = vmin + ratio * dv; if (v < vmid) { rgba[0] = (c2[0] - c1[0]) * (v - vmin) / (ratio*dv) + c1[0]; rgba[1] = (c2[1] - c1[1]) * (v - vmin) / (ratio*dv) + c1[1]; rgba[2] = (c2[2] - c1[2]) * (v - vmin) / (ratio*dv) + c1[2]; } else { rgba[0] = (c3[0] - c2[0]) * (v - vmid) / ((1-ratio)*dv) + c2[0]; rgba[1] = (c3[1] - c2[1]) * (v - vmid) / ((1-ratio)*dv) + c2[1]; rgba[2] = (c3[2] - c2[2]) * (v - vmid) / ((1-ratio)*dv) + c2[2]; } break; case 13: c1[0] = 0 / 255.0; c1[1] = 255 / 255.0; c1[2] = 0 / 255.0; c2[0] = 255 / 255.0; c2[1] = 150 / 255.0; c2[2] = 0 / 255.0; c3[0] = 255 / 255.0; c3[1] = 250 / 255.0; c3[2] = 240 / 255.0; ratio = 0.3; vmid = vmin + ratio * dv; if (v < vmid) { rgba[0] = (c2[0] - c1[0]) * (v - vmin) / (ratio*dv) + c1[0]; rgba[1] = (c2[1] - c1[1]) * (v - vmin) / (ratio*dv) + c1[1]; rgba[2] = (c2[2] - c1[2]) * (v - vmin) / (ratio*dv) + c1[2]; } else { rgba[0] = (c3[0] - c2[0]) * (v - vmid) / ((1-ratio)*dv) + c2[0]; rgba[1] = (c3[1] - c2[1]) * (v - vmid) / ((1-ratio)*dv) + c2[1]; rgba[2] = (c3[2] - c2[2]) * (v - vmid) / ((1-ratio)*dv) + c2[2]; } break; case 14: rgba[0] = 1; rgba[1] = 1 - (v - vmin) / dv; rgba[2] = 0; break; case 15: if (v < (vmin + 0.25 * dv)) { rgba[0] = 0; rgba[1] = 4 * (v - vmin) / dv; rgba[2] = 1; } else if (v < (vmin + 0.5 * dv)) { rgba[0] = 0; rgba[1] = 1; rgba[2] = 1 - 4 * (v - vmin - 0.25 * dv) / dv; } else if (v < (vmin + 0.75 * dv)) { rgba[0] = 4 * (v - vmin - 0.5 * dv) / dv; rgba[1] = 1; rgba[2] = 0; } else { rgba[0] = 1; rgba[1] = 1; rgba[2] = 4 * (v - vmin - 0.75 * dv) / dv; } break; case 16: if (v < (vmin + 0.5 * dv)) { rgba[0] = 0.0; rgba[1] = 2 * (v - vmin) / dv; rgba[2] = 1 - 2 * (v - vmin) / dv; } else { rgba[0] = 2 * (v - vmin - 0.5 * dv) / dv; rgba[1] = 1 - 2 * (v - vmin - 0.5 * dv) / dv; rgba[2] = 0.0; } break; case 17: if (v < (vmin + 0.5 * dv)) { rgba[0] = 1.0; rgba[1] = 1 - 2 * (v - vmin) / dv; rgba[2] = 2 * (v - vmin) / dv; } else { rgba[0] = 1 - 2 * (v - vmin - 0.5 * dv) / dv; rgba[1] = 2 * (v - vmin - 0.5 * dv) / dv; rgba[2] = 1.0; } break; case 18: rgba[0] = 0; rgba[1] = (v - vmin) / (vmax - vmin); rgba[2] = 1; break; case 19: rgba[0] = (v - vmin) / (vmax - vmin); rgba[1] = rgba[0]; rgba[2] = 1; break; case 20: c1[0] = 0 / 255.0; c1[1] = 160 / 255.0; c1[2] = 0 / 255.0; c2[0] = 180 / 255.0; c2[1] = 220 / 255.0; c2[2] = 0 / 255.0; c3[0] = 250 / 255.0; c3[1] = 220 / 255.0; c3[2] = 170 / 255.0; ratio = 0.3; vmid = vmin + ratio * dv; if (v < vmid) { rgba[0] = (c2[0] - c1[0]) * (v - vmin) / (ratio*dv) + c1[0]; rgba[1] = (c2[1] - c1[1]) * (v - vmin) / (ratio*dv) + c1[1]; rgba[2] = (c2[2] - c1[2]) * (v - vmin) / (ratio*dv) + c1[2]; } else { rgba[0] = (c3[0] - c2[0]) * (v - vmid) / ((1-ratio)*dv) + c2[0]; rgba[1] = (c3[1] - c2[1]) * (v - vmid) / ((1-ratio)*dv) + c2[1]; rgba[2] = (c3[2] - c2[2]) * (v - vmid) / ((1-ratio)*dv) + c2[2]; } break; } } } //______________________________________________________________________________ TGLLevelPalette::TGLLevelPalette() : fContours(0), fPaletteSize(0), fTexture(0), fMaxPaletteSize(0) { //Ctor. } //______________________________________________________________________________ Bool_t TGLLevelPalette::GeneratePalette(UInt_t paletteSize, const Rgl::Range_t &zRange, Bool_t check) { //Try to find colors for palette. if (!fMaxPaletteSize && check) glGetIntegerv(GL_MAX_TEXTURE_SIZE, &fMaxPaletteSize); if (!(zRange.second - zRange.first)) return kFALSE; if (check && paletteSize > UInt_t(fMaxPaletteSize)) { Error("TGLLevelPalette::GeneratePalette", "Number of contours %d is too big for GL 1D texture, try to reduce it to %d", paletteSize, fMaxPaletteSize); return kFALSE; } UInt_t nearestPow2 = 2; while (nearestPow2 < paletteSize) nearestPow2 <<= 1; fTexels.resize(4 * nearestPow2); fPaletteSize = paletteSize; //Generate texels. const Int_t nColors = gStyle->GetNumberOfColors(); //Map color index into index in real palette. for (UInt_t i = 0; i < paletteSize; ++i) { Int_t paletteInd = Int_t(nColors / Double_t(paletteSize) * i); if (paletteInd > nColors - 1) paletteInd = nColors - 1; Int_t colorInd = gStyle->GetColorPalette(paletteInd); if (const TColor *c = gROOT->GetColor(colorInd)) { Float_t rgb[3] = {}; c->GetRGB(rgb[0], rgb[1], rgb[2]); fTexels[i * 4] = UChar_t(rgb[0] * 255); fTexels[i * 4 + 1] = UChar_t(rgb[1] * 255); fTexels[i * 4 + 2] = UChar_t(rgb[2] * 255); fTexels[i * 4 + 3] = 200;//alpha } } fZRange = zRange; return kTRUE; } //______________________________________________________________________________ void TGLLevelPalette::SetContours(const std::vector<Double_t> *cont) { //Clear :) fContours = cont; } //______________________________________________________________________________ void TGLLevelPalette::EnableTexture(Int_t mode)const { //Enable 1D texture glEnable(GL_TEXTURE_1D); glGenTextures(1, &fTexture); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glBindTexture(GL_TEXTURE_1D, fTexture); glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexImage1D(GL_TEXTURE_1D, 0, GL_RGBA, fTexels.size() / 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, &fTexels[0]); glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GLint(mode)); } //______________________________________________________________________________ void TGLLevelPalette::DisableTexture()const { //Disable 1D texture glDeleteTextures(1, &fTexture); glDisable(GL_TEXTURE_1D); } //______________________________________________________________________________ Int_t TGLLevelPalette::GetPaletteSize()const { //Get. Palette. Size. return Int_t(fPaletteSize); } //______________________________________________________________________________ Double_t TGLLevelPalette::GetTexCoord(Double_t z)const { //Get tex coordinate if (!fContours) return (z - fZRange.first) / (fZRange.second - fZRange.first) * fPaletteSize / (fTexels.size() / 4); /* //This part is wrong. To be fixed. std::vector<Double_t>::size_type i = 0, e = fContours->size(); if (!e) return 0.; for (; i < e - 1; ++i) { if (z >= (*fContours)[i] && z <= (*fContours)[i + 1]) return i / Double_t(fTexels.size() / 4); } */ return 1.; } //______________________________________________________________________________ const UChar_t *TGLLevelPalette::GetColour(Double_t z)const { //Get color. const Int_t ind = Int_t((z - fZRange.first) / (fZRange.second - fZRange.first) * fPaletteSize); return &fTexels[ind * 4]; } //______________________________________________________________________________ const UChar_t *TGLLevelPalette::GetColour(Int_t ind)const { //Get color. return &fTexels[ind * 4]; }
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