// @(#)root/geom:$Name: $:$Id: TGeoTube.cxx,v 1.50 2004/12/07 14:24:57 brun Exp $
// Author: Andrei Gheata 24/10/01
// TGeoTube::Contains() and DistFromInside/In() implemented by Mihaela Gheata
/*************************************************************************
* 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. *
*************************************************************************/
//_____________________________________________________________________________
// TGeoTube - cylindrical tube class. It takes 3 parameters :
// inner radius, outer radius and half-length dz.
//
//_____________________________________________________________________________
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//_____________________________________________________________________________
// TGeoTubeSeg - a phi segment of a tube. Has 5 parameters :
// - the same 3 as a tube;
// - first phi limit (in degrees)
// - second phi limit
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//_____________________________________________________________________________
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// TGeoCtub - a tube segment cut with 2 planes. Has 11 parameters :
// - the same 5 as a tube segment;
// - x, y, z components of the normal to the -dZ cut plane in
// point (0, 0, -dZ);
// - x, y, z components of the normal to the +dZ cut plane in
// point (0, 0, dZ);
//
//_____________________________________________________________________________
//
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//
#include "TROOT.h"
#include "TGeoManager.h"
#include "TGeoVolume.h"
#include "TVirtualGeoPainter.h"
#include "TGeoTube.h"
#include "TVirtualPad.h"
#include "TBuffer3D.h"
ClassImp(TGeoTube)
//_____________________________________________________________________________
TGeoTube::TGeoTube()
{
// Default constructor
SetShapeBit(TGeoShape::kGeoTube);
fRmin = 0.0;
fRmax = 0.0;
fDz = 0.0;
}
//_____________________________________________________________________________
TGeoTube::TGeoTube(Double_t rmin, Double_t rmax, Double_t dz)
:TGeoBBox(0, 0, 0)
{
// Default constructor specifying minimum and maximum radius
SetShapeBit(TGeoShape::kGeoTube);
SetTubeDimensions(rmin, rmax, dz);
if ((fDz<0) || (fRmin<0) || (fRmax<0)) {
SetShapeBit(kGeoRunTimeShape);
// if (fRmax<=fRmin) SetShapeBit(kGeoInvalidShape);
// printf("tube : dz=%f rmin=%f rmax=%f\n", dz, rmin, rmax);
}
ComputeBBox();
}
//_____________________________________________________________________________
TGeoTube::TGeoTube(const char *name, Double_t rmin, Double_t rmax, Double_t dz)
:TGeoBBox(name, 0, 0, 0)
{
// Default constructor specifying minimum and maximum radius
SetShapeBit(TGeoShape::kGeoTube);
SetTubeDimensions(rmin, rmax, dz);
if ((fDz<0) || (fRmin<0) || (fRmax<0)) {
SetShapeBit(kGeoRunTimeShape);
// if (fRmax<=fRmin) SetShapeBit(kGeoInvalidShape);
// printf("tube : dz=%f rmin=%f rmax=%f\n", dz, rmin, rmax);
}
ComputeBBox();
}
//_____________________________________________________________________________
TGeoTube::TGeoTube(Double_t *param)
:TGeoBBox(0, 0, 0)
{
// Default constructor specifying minimum and maximum radius
// param[0] = Rmin
// param[1] = Rmax
// param[2] = dz
SetShapeBit(TGeoShape::kGeoTube);
SetDimensions(param);
if ((fDz<0) || (fRmin<0) || (fRmax<0)) SetShapeBit(kGeoRunTimeShape);
ComputeBBox();
}
//_____________________________________________________________________________
TGeoTube::~TGeoTube()
{
// destructor
}
//_____________________________________________________________________________
void TGeoTube::ComputeBBox()
{
// compute bounding box of the tube
fDX = fDY = fRmax;
fDZ = fDz;
}
//_____________________________________________________________________________
void TGeoTube::ComputeNormal(Double_t *point, Double_t *dir, Double_t *norm)
{
// Compute normal to closest surface from POINT.
Double_t saf[3];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
saf[0] = TMath::Abs(fDz-TMath::Abs(point[2]));
saf[1] = (fRmin>1E-10)?TMath::Abs(r-fRmin):TGeoShape::Big();
saf[2] = TMath::Abs(fRmax-r);
Int_t i = TMath::LocMin(3,saf);
if (i==0) {
norm[0] = norm[1] = 0.;
norm[2] = TMath::Sign(1.,dir[2]);
return;
}
norm[2] = 0;
Double_t phi = TMath::ATan2(point[1], point[0]);
norm[0] = TMath::Cos(phi);
norm[1] = TMath::Sin(phi);
if (norm[0]*dir[0]+norm[1]*dir[1]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
}
}
//_____________________________________________________________________________
void TGeoTube::ComputeNormalS(Double_t *point, Double_t *dir, Double_t *norm,
Double_t /*rmin*/, Double_t /*rmax*/, Double_t /*dz*/)
{
// Compute normal to closest surface from POINT.
norm[2] = 0;
Double_t phi = TMath::ATan2(point[1], point[0]);
norm[0] = TMath::Cos(phi);
norm[1] = TMath::Sin(phi);
if (norm[0]*dir[0]+norm[1]*dir[1]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
}
}
//_____________________________________________________________________________
Bool_t TGeoTube::Contains(Double_t *point) const
{
// test if point is inside this tube
if (TMath::Abs(point[2]) > fDz) return kFALSE;
Double_t r2 = point[0]*point[0]+point[1]*point[1];
if ((r2<fRmin*fRmin) || (r2>fRmax*fRmax)) return kFALSE;
return kTRUE;
}
//_____________________________________________________________________________
Int_t TGeoTube::DistancetoPrimitive(Int_t px, Int_t py)
{
// compute closest distance from point px,py to each corner
Int_t n = gGeoManager->GetNsegments();
const Int_t numPoints = 4*n;
return ShapeDistancetoPrimitive(numPoints, px, py);
}
//_____________________________________________________________________________
Double_t TGeoTube::DistFromInsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax, Double_t dz)
{
// compute distance from inside point to surface of the tube (static)
Double_t rsq=point[0]*point[0]+point[1]*point[1];
// compute distance to surface
// Do Z
Double_t sz = TGeoShape::Big();
if (dir[2]>0) {
sz = (dz-point[2])/dir[2];
if (sz<=0.) return 0.;
} else {
if (dir[2]<0) {
sz = -(dz+point[2])/dir[2];
if (sz<=0.) return 0.;
}
}
// Do R
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
if (TMath::Abs(nsq)<1E-10) return sz;
Double_t rdotn=point[0]*dir[0]+point[1]*dir[1];
Double_t b,d;
Double_t sr;
// inner cylinder
if (rmin>1E-10) {
DistToTube(rsq,nsq,rdotn,rmin,b,d);
if (d>0) {
sr=-b-d;
if (sr>0) return TMath::Min(sz,sr);
}
}
// outer cylinder
DistToTube(rsq,nsq,rdotn,rmax,b,d);
if (d>0) {
sr=-b+d;
if (sr>0) return TMath::Min(sz,sr);
}
// printf("Error : TGeoTube::DistFromInsideS() -> cannot exit tube rmin=%f rmax=%f dZ=%f from point (%f, %f, %f,)!\n",
// rmin,rmax,dz, point[0], point[1], point[2]);
// Double_t *p = gGeoManager->GetCurrentPoint();
// Double_t *dr = gGeoManager->GetCurrentDirection();
// printf("Location: (%f,%f,%f,%f,%f,%f) %s\n", p[0],p[1],p[2],dr[0],dr[1],dr[2],gGeoManager->GetPath());
return 0.;
}
//_____________________________________________________________________________
Double_t TGeoTube::DistFromInside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
{
// compute distance from inside point to surface of the tube
if (iact<3 && safe) {
*safe = Safety(point, kTRUE);
if (iact==0) return TGeoShape::Big();
if ((iact==1) && (*safe>step)) return TGeoShape::Big();
}
// compute distance to surface
// Do Z
Double_t sz = TGeoShape::Big();
if (dir[2]>0) {
sz = (fDz-point[2])/dir[2];
if (sz<=0.) return 0.;
} else {
if (dir[2]<0) {
sz = -(fDz+point[2])/dir[2];
if (sz<=0.) return 0.;
}
}
// Do R
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
if (TMath::Abs(nsq)<1E-10) return sz;
Double_t rsq =point[0]*point[0]+point[1]*point[1];
Double_t rdotn=point[0]*dir[0] +point[1]*dir[1];
Double_t b,d;
Double_t sr;
// inner cylinder
if (fRmin>1E-10 && rdotn<0) {
DistToTube(rsq,nsq,rdotn,fRmin,b,d);
if (d>0) {
sr=-b-d;
if (sr>0) return TMath::Min(sz,sr);
}
}
// outer cylinder
DistToTube(rsq,nsq,rdotn,fRmax,b,d);
if (d>0) {
sr=-b+d;
if (sr>0) return TMath::Min(sz,sr);
}
return 0.;
}
//_____________________________________________________________________________
Double_t TGeoTube::DistFromOutsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax, Double_t dz)
{
// static method to compute distance from outside point to a tube with given parameters
Double_t rsq = point[0]*point[0]+point[1]*point[1];
// check Z planes
Double_t xi,yi,zi;
Double_t s = TGeoShape::Big();
if (TMath::Abs(point[2])>=dz) {
if ((point[2]*dir[2])<0) {
s = (TMath::Abs(point[2])-dz)/TMath::Abs(dir[2]);
xi = point[0]+s*dir[0];
yi = point[1]+s*dir[1];
Double_t r2=xi*xi+yi*yi;
if (((rmin*rmin)<=r2) && (r2<=(rmax*rmax))) return s;
}
}
// check outer cyl. surface
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
if (TMath::Abs(nsq)<1E-10) return TGeoShape::Big();
Double_t rdotn=point[0]*dir[0]+point[1]*dir[1];
Double_t b,d;
// only r>rmax has to be considered
if (rsq>=rmax*rmax) {
DistToTube(rsq, nsq, rdotn, rmax, b, d);
if (d>0) {
s=-b-d;
if (s>0) {
zi=point[2]+s*dir[2];
if (TMath::Abs(zi)<=dz) return s;
}
}
}
// check inner cylinder
if (rmin>0) {
DistToTube(rsq, nsq, rdotn, rmin, b, d);
if (d>0) {
s=-b+d;
if (s>0) {
zi=point[2]+s*dir[2];
if (TMath::Abs(zi)<=dz) return s;
}
}
}
return TGeoShape::Big();
}
//_____________________________________________________________________________
Double_t TGeoTube::DistFromOutside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
{
// compute distance from outside point to surface of the tube and safe distance
// fist localize point w.r.t tube
if (iact<3 && safe) {
*safe = Safety(point, kFALSE);
if (iact==0) return TGeoShape::Big();
if ((iact==1) && (step<=*safe)) return TGeoShape::Big();
}
// find distance to shape
return DistFromOutsideS(point, dir, fRmin, fRmax, fDz);
}
//_____________________________________________________________________________
void TGeoTube::DistToTube(Double_t rsq, Double_t nsq, Double_t rdotn, Double_t radius, Double_t &b, Double_t &delta)
{
// Static method computing the distance to a tube with given radius, starting from
// POINT along DIR director cosines. The distance is computed as :
// RSQ = point[0]*point[0]+point[1]*point[1]
// NSQ = dir[0]*dir[0]+dir[1]*dir[1] ---> should NOT be 0 !!!
// RDOTN = point[0]*dir[0]+point[1]*dir[1]
// The distance can be computed as :
// D = -B +/- DELTA
// where DELTA.GT.0 and D.GT.0
Double_t t1 = 1./nsq;
Double_t t3=rsq-(radius*radius);
b = t1*rdotn;
Double_t c =t1*t3;
delta = b*b-c;
if (delta>0) {
delta=TMath::Sqrt(delta);
} else {
delta = -1;
}
}
//_____________________________________________________________________________
TGeoVolume *TGeoTube::Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv,
Double_t start, Double_t step)
{
//--- Divide this tube shape belonging to volume "voldiv" into ndiv volumes
// called divname, from start position with the given step. Returns pointer
// to created division cell volume in case of Z divisions. For radial division
// creates all volumes with different shapes and returns pointer to volume that
// was divided. In case a wrong division axis is supplied, returns pointer to
// volume that was divided.
TGeoShape *shape; //--- shape to be created
TGeoVolume *vol; //--- division volume to be created
TGeoVolumeMulti *vmulti; //--- generic divided volume
TGeoPatternFinder *finder; //--- finder to be attached
TString opt = ""; //--- option to be attached
Int_t id;
Double_t end = start+ndiv*step;
switch (iaxis) {
case 1: //--- R division
finder = new TGeoPatternCylR(voldiv, ndiv, start, end);
vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
voldiv->SetFinder(finder);
finder->SetDivIndex(voldiv->GetNdaughters());
for (id=0; id<ndiv; id++) {
shape = new TGeoTube(start+id*step, start+(id+1)*step, fDz);
vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
vmulti->AddVolume(vol);
opt = "R";
voldiv->AddNodeOffset(vol, id, 0, opt.Data());
((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
}
return vmulti;
case 2: //--- Phi division
finder = new TGeoPatternCylPhi(voldiv, ndiv, start, end);
voldiv->SetFinder(finder);
finder->SetDivIndex(voldiv->GetNdaughters());
shape = new TGeoTubeSeg(fRmin, fRmax, fDz, -step/2, step/2);
vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
vmulti->AddVolume(vol);
opt = "Phi";
for (id=0; id<ndiv; id++) {
voldiv->AddNodeOffset(vol, id, start+id*step+step/2, opt.Data());
((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
}
return vmulti;
case 3: //--- Z division
finder = new TGeoPatternZ(voldiv, ndiv, start, start+ndiv*step);
voldiv->SetFinder(finder);
finder->SetDivIndex(voldiv->GetNdaughters());
shape = new TGeoTube(fRmin, fRmax, step/2);
vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
vmulti->AddVolume(vol);
opt = "Z";
for (id=0; id<ndiv; id++) {
voldiv->AddNodeOffset(vol, id, start+step/2+id*step, opt.Data());
((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
}
return vmulti;
default:
Error("Divide", "In shape %s wrong axis type for division", GetName());
return 0;
}
}
//_____________________________________________________________________________
const char *TGeoTube::GetAxisName(Int_t iaxis) const
{
// Returns name of axis IAXIS.
switch (iaxis) {
case 1:
return "R";
case 2:
return "PHI";
case 3:
return "Z";
default:
return "UNDEFINED";
}
}
//_____________________________________________________________________________
Double_t TGeoTube::GetAxisRange(Int_t iaxis, Double_t &xlo, Double_t &xhi) const
{
// Get range of shape for a given axis.
xlo = 0;
xhi = 0;
Double_t dx = 0;
switch (iaxis) {
case 1:
xlo = fRmin;
xhi = fRmax;
dx = xhi-xlo;
return dx;
case 2:
xlo = 0;
xhi = 360;
dx = 360;
return dx;
case 3:
xlo = -fDz;
xhi = fDz;
dx = xhi-xlo;
return dx;
}
return dx;
}
//_____________________________________________________________________________
void TGeoTube::GetBoundingCylinder(Double_t *param) const
{
//--- Fill vector param[4] with the bounding cylinder parameters. The order
// is the following : Rmin, Rmax, Phi1, Phi2, dZ
param[0] = fRmin; // Rmin
param[0] *= param[0];
param[1] = fRmax; // Rmax
param[1] *= param[1];
param[2] = 0.; // Phi1
param[3] = 360.; // Phi1
}
//_____________________________________________________________________________
TGeoShape *TGeoTube::GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix * /*mat*/) const
{
// in case shape has some negative parameters, these has to be computed
// in order to fit the mother
if (!TestShapeBit(kGeoRunTimeShape)) return 0;
Double_t rmin, rmax, dz;
Double_t xmin,xmax;
rmin = fRmin;
rmax = fRmax;
dz = fDz;
if (fDz<0) {
mother->GetAxisRange(3,xmin,xmax);
if (xmax<0) return 0;
dz=xmax;
}
mother->GetAxisRange(1,xmin,xmax);
if (fRmin<0) {
if (xmin<0) return 0;
rmin = xmin;
}
if (fRmax<0) {
if (xmax<=0) return 0;
rmax = xmax;
}
return (new TGeoTube(rmin, rmax, dz));
}
//_____________________________________________________________________________
void TGeoTube::InspectShape() const
{
// print shape parameters
printf("*** Shape %s: TGeoTube ***\n", GetName());
printf(" Rmin = %11.5f\n", fRmin);
printf(" Rmax = %11.5f\n", fRmax);
printf(" dz = %11.5f\n", fDz);
printf(" Bounding box:\n");
TGeoBBox::InspectShape();
}
//_____________________________________________________________________________
TBuffer3D *TGeoTube::MakeBuffer3D() const
{
// Creates a TBuffer3D describing *this* shape.
// Coordinates are in local reference frame.
Int_t n = gGeoManager->GetNsegments();
Int_t NbPnts = 4*n;
Int_t NbSegs = 8*n;
Int_t NbPols = 4*n;
TBuffer3D* buff = new TBuffer3D(3*NbPnts, 3*NbSegs, 6*NbPols);
buff->fType = TBuffer3D::kANY;
buff->fNbPnts = NbPnts;
buff->fNbSegs = NbSegs;
buff->fNbPols = NbPols;
SetPoints(buff->fPnts);
SetSegsAndPols(buff);
return buff;
}
//_____________________________________________________________________________
void TGeoTube::Paint(Option_t *option)
{
// Paint this shape according to option
// Allocate the necessary spage in gPad->fBuffer3D to store this shape
Int_t n = gGeoManager->GetNsegments();
TGeoVolume *vol = gGeoManager->GetPaintVolume();
// In case of OpenGL a tube can be drawn with specialized functions
if (!strcmp(option, "ogl") && !TestShapeBit(kGeoEltu)) {
TBuffer3D *buff = gPad->AllocateBuffer3D(42, 0, 0);
buff->fNbPnts = 9;//9 points! not 3
buff->fNbSegs = 0;
buff->fNbPols = 0;
buff->fColor = vol->GetLineColor();
buff->fPnts[0] = 0; buff->fPnts[1] = 0; buff->fPnts[2] = 0;
buff->fPnts[3] = fRmax; buff->fPnts[4] = fRmax; buff->fPnts[5] = -fDz;
buff->fPnts[6] = -fRmax; buff->fPnts[7] = fRmax; buff->fPnts[8] = -fDz;
buff->fPnts[9] = -fRmax; buff->fPnts[10] = -fRmax; buff->fPnts[11] = -fDz;
buff->fPnts[12] = fRmax; buff->fPnts[13] = -fRmax; buff->fPnts[14] = -fDz;
buff->fPnts[15] = fRmax; buff->fPnts[16] = fRmax; buff->fPnts[17] = fDz;
buff->fPnts[18] = -fRmax; buff->fPnts[19] = fRmax; buff->fPnts[20] = fDz;
buff->fPnts[21] = -fRmax; buff->fPnts[22] = -fRmax; buff->fPnts[23] = fDz;
buff->fPnts[24] = fRmax; buff->fPnts[25] = -fRmax; buff->fPnts[26] = fDz;
buff->fPnts[27] = (Float_t)n;
buff->fPnts[28] = fRmin;
buff->fPnts[29] = fRmax;
buff->fPnts[30] = fRmin;
buff->fPnts[31] = fRmax;
buff->fPnts[32] = fDz;
TransformPoints(buff);
buff->fId = vol;
buff->fType = TBuffer3D::kTUBE;
TGeoHMatrix *m = (gGeoManager->IsMatrixTransform())?gGeoManager->GetGLMatrix() : gGeoManager->GetCurrentMatrix();
const Double_t *rotM = m->GetRotationMatrix();
for (Int_t i = 33; i < 42; ++i) buff->fPnts[i] = rotM[i - 33];
buff->Paint(option);
return;
}
Int_t NbPnts = 4*n;
Int_t NbSegs = 8*n;
Int_t NbPols = 4*n;
TBuffer3D *buff = gPad->AllocateBuffer3D(3*NbPnts, 3*NbSegs, 6*NbPols);
buff->fType = TBuffer3D::kANY;
buff->fId = vol;
// Fill gPad->fBuffer3D. Points coordinates are in Master space
buff->fNbPnts = NbPnts;
buff->fNbSegs = NbSegs;
buff->fNbPols = NbPols;
// In case of option "size" it is not necessary to fill the buffer
if (strstr(option,"size")) {
buff->Paint(option);
return;
}
SetPoints(buff->fPnts);
TransformPoints(buff);
// Basic colors: 0, 1, ... 7
buff->fColor = vol->GetLineColor();
SetSegsAndPols(buff);
// Paint gPad->fBuffer3D
buff->Paint(option);
}
//_____________________________________________________________________________
void TGeoTube::SetSegsAndPols(TBuffer3D *buff) const
{
// Fill TBuffer3D structure for segments and polygons.
Int_t i, j;
Int_t n = gGeoManager->GetNsegments();
Int_t c = (((buff->fColor) %8) -1) * 4;
if (c < 0) c = 0;
for (i = 0; i < 4; i++) {
for (j = 0; j < n; j++) {
buff->fSegs[(i*n+j)*3 ] = c;
buff->fSegs[(i*n+j)*3+1] = i*n+j;
buff->fSegs[(i*n+j)*3+2] = i*n+j+1;
}
buff->fSegs[(i*n+j-1)*3+2] = i*n;
}
for (i = 4; i < 6; i++) {
for (j = 0; j < n; j++) {
buff->fSegs[(i*n+j)*3 ] = c+1;
buff->fSegs[(i*n+j)*3+1] = (i-4)*n+j;
buff->fSegs[(i*n+j)*3+2] = (i-2)*n+j;
}
}
for (i = 6; i < 8; i++) {
for (j = 0; j < n; j++) {
buff->fSegs[(i*n+j)*3 ] = c;
buff->fSegs[(i*n+j)*3+1] = 2*(i-6)*n+j;
buff->fSegs[(i*n+j)*3+2] = (2*(i-6)+1)*n+j;
}
}
Int_t indx = 0;
i=0;
for (j = 0; j < n; j++) {
indx = 6*(i*n+j);
buff->fPols[indx ] = c;
buff->fPols[indx+1] = 4;
buff->fPols[indx+5] = i*n+j;
buff->fPols[indx+4] = (4+i)*n+j;
buff->fPols[indx+3] = (2+i)*n+j;
buff->fPols[indx+2] = (4+i)*n+j+1;
}
buff->fPols[indx+2] = (4+i)*n;
i=1;
for (j = 0; j < n; j++) {
indx = 6*(i*n+j);
buff->fPols[indx ] = c;
buff->fPols[indx+1] = 4;
buff->fPols[indx+2] = i*n+j;
buff->fPols[indx+3] = (4+i)*n+j;
buff->fPols[indx+4] = (2+i)*n+j;
buff->fPols[indx+5] = (4+i)*n+j+1;
}
buff->fPols[indx+5] = (4+i)*n;
i=2;
for (j = 0; j < n; j++) {
indx = 6*(i*n+j);
buff->fPols[indx ] = c+i;
buff->fPols[indx+1] = 4;
buff->fPols[indx+2] = (i-2)*2*n+j;
buff->fPols[indx+3] = (4+i)*n+j;
buff->fPols[indx+4] = ((i-2)*2+1)*n+j;
buff->fPols[indx+5] = (4+i)*n+j+1;
}
buff->fPols[indx+5] = (4+i)*n;
i=3;
for (j = 0; j < n; j++) {
indx = 6*(i*n+j);
buff->fPols[indx ] = c+i;
buff->fPols[indx+1] = 4;
buff->fPols[indx+5] = (i-2)*2*n+j;
buff->fPols[indx+4] = (4+i)*n+j;
buff->fPols[indx+3] = ((i-2)*2+1)*n+j;
buff->fPols[indx+2] = (4+i)*n+j+1;
}
buff->fPols[indx+2] = (4+i)*n;
}
//_____________________________________________________________________________
Double_t TGeoTube::Safety(Double_t *point, Bool_t in) const
{
// computes the closest distance from given point to this shape, according
// to option. The matching point on the shape is stored in spoint.
#ifndef NEVER
Double_t r = TMath::Sqrt(point[0]*point[0]+point[1]*point[1]);
Double_t safe, safrmin, safrmax;
if (in) {
safe = fDz-TMath::Abs(point[2]); // positive if inside
if (fRmin>1E-10) {
safrmin = r-fRmin;
if (safrmin < safe) safe = safrmin;
}
safrmax = fRmax-r;
if (safrmax < safe) safe = safrmax;
} else {
safe = -fDz+TMath::Abs(point[2]);
if (fRmin>1E-10) {
safrmin = -r+fRmin;
if (safrmin > safe) safe = safrmin;
}
safrmax = -fRmax+r;
if (safrmax > safe) safe = safrmax;
}
return safe;
#else
Double_t saf[3];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
saf[0] = fDz-TMath::Abs(point[2]); // positive if inside
saf[1] = (fRmin>1E-10)?(r-fRmin):TGeoShape::Big();
saf[2] = fRmax-r;
if (in) return saf[TMath::LocMin(3,saf)];
for (Int_t i=0; i<3; i++) saf[i]=-saf[i];
return saf[TMath::LocMax(3,saf)];
#endif
}
//_____________________________________________________________________________
Double_t TGeoTube::SafetyS(Double_t *point, Bool_t in, Double_t rmin, Double_t rmax, Double_t dz, Int_t skipz)
{
// computes the closest distance from given point to this shape, according
// to option. The matching point on the shape is stored in spoint.
Double_t saf[3];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
switch (skipz) {
case 1: // skip lower Z plane
saf[0] = dz - point[2];
break;
case 2: // skip upper Z plane
saf[0] = dz + point[2];
break;
case 3: // skip both
saf[0] = TGeoShape::Big();
break;
default:
saf[0] = dz-TMath::Abs(point[2]);
}
saf[1] = (rmin>1E-10)?(r-rmin):TGeoShape::Big();
saf[2] = rmax-r;
// printf("saf0=%g saf1=%g saf2=%g in=%d skipz=%d\n", saf[0],saf[1],saf[2],in,skipz);
if (in) return saf[TMath::LocMin(3,saf)];
for (Int_t i=0; i<3; i++) saf[i]=-saf[i];
return saf[TMath::LocMax(3,saf)];
}
//_____________________________________________________________________________
void TGeoTube::SetTubeDimensions(Double_t rmin, Double_t rmax, Double_t dz)
{
fRmin = rmin;
fRmax = rmax;
fDz = dz;
if (fRmin>0 && fRmax>0 && fRmin>=fRmax)
Error("SetTubeDimensions", "In shape %s wrong rmin=%g rmax=%g", GetName(), rmin,rmax);
}
//_____________________________________________________________________________
void TGeoTube::SetDimensions(Double_t *param)
{
Double_t rmin = param[0];
Double_t rmax = param[1];
Double_t dz = param[2];
SetTubeDimensions(rmin, rmax, dz);
}
//_____________________________________________________________________________
void TGeoTube::SetPoints(Double_t *buff) const
{
// create tube mesh points
Double_t dz;
Int_t j, n;
n = gGeoManager->GetNsegments();
Double_t dphi = 360./n;
Double_t phi = 0;
dz = fDz;
Int_t indx = 0;
if (buff) {
for (j = 0; j < n; j++) {
phi = j*dphi*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmin * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmin * TMath::Sin(phi);
indx++;
buff[indx+6*n] = dz;
buff[indx] =-dz;
indx++;
}
for (j = 0; j < n; j++) {
phi = j*dphi*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmax * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmax * TMath::Sin(phi);
indx++;
buff[indx+6*n]= dz;
buff[indx] =-dz;
indx++;
}
}
}
//_____________________________________________________________________________
void TGeoTube::SetPoints(Float_t *buff) const
{
// create tube mesh points
Double_t dz;
Int_t j, n;
n = gGeoManager->GetNsegments();
Double_t dphi = 360./n;
Double_t phi = 0;
dz = fDz;
Int_t indx = 0;
if (buff) {
for (j = 0; j < n; j++) {
phi = j*dphi*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmin * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmin * TMath::Sin(phi);
indx++;
buff[indx+6*n] = dz;
buff[indx] =-dz;
indx++;
}
for (j = 0; j < n; j++) {
phi = j*dphi*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmax * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmax * TMath::Sin(phi);
indx++;
buff[indx+6*n]= dz;
buff[indx] =-dz;
indx++;
}
}
}
//_____________________________________________________________________________
Int_t TGeoTube::GetNmeshVertices() const
{
// Return number of vertices of the mesh representation
Int_t n = gGeoManager->GetNsegments();
Int_t numPoints = n*4;
return numPoints;
}
//_____________________________________________________________________________
void TGeoTube::Sizeof3D() const
{
///// fill size of this 3-D object
/// TVirtualGeoPainter *painter = gGeoManager->GetGeomPainter();
/// if (!painter) return;
/// Int_t n = gGeoManager->GetNsegments();
/// Int_t numPoints = n*4;
/// Int_t numSegs = n*8;
/// Int_t numPolys = n*4;
/// painter->AddSize3D(numPoints, numSegs, numPolys);
}
ClassImp(TGeoTubeSeg)
//_____________________________________________________________________________
TGeoTubeSeg::TGeoTubeSeg()
{
// Default constructor
SetShapeBit(TGeoShape::kGeoTubeSeg);
fPhi1 = fPhi2 = 0.0;
}
//_____________________________________________________________________________
TGeoTubeSeg::TGeoTubeSeg(Double_t rmin, Double_t rmax, Double_t dz,
Double_t phi1, Double_t phi2)
:TGeoTube(rmin, rmax, dz)
{
// Default constructor specifying minimum and maximum radius
SetShapeBit(TGeoShape::kGeoTubeSeg);
SetTubsDimensions(rmin, rmax, dz, phi1, phi2);
ComputeBBox();
}
//_____________________________________________________________________________
TGeoTubeSeg::TGeoTubeSeg(const char *name, Double_t rmin, Double_t rmax, Double_t dz,
Double_t phi1, Double_t phi2)
:TGeoTube(name, rmin, rmax, dz)
{
// Default constructor specifying minimum and maximum radius
SetShapeBit(TGeoShape::kGeoTubeSeg);
SetTubsDimensions(rmin, rmax, dz, phi1, phi2);
ComputeBBox();
}
//_____________________________________________________________________________
TGeoTubeSeg::TGeoTubeSeg(Double_t *param)
:TGeoTube(0, 0, 0)
{
// Default constructor specifying minimum and maximum radius
// param[0] = Rmin
// param[1] = Rmax
// param[2] = dz
// param[3] = phi1
// param[4] = phi2
SetShapeBit(TGeoShape::kGeoTubeSeg);
SetDimensions(param);
ComputeBBox();
}
//_____________________________________________________________________________
TGeoTubeSeg::~TGeoTubeSeg()
{
// destructor
}
//_____________________________________________________________________________
void TGeoTubeSeg::ComputeBBox()
{
// compute bounding box of the tube segment
Double_t xc[4];
Double_t yc[4];
xc[0] = fRmax*TMath::Cos(fPhi1*TMath::DegToRad());
yc[0] = fRmax*TMath::Sin(fPhi1*TMath::DegToRad());
xc[1] = fRmax*TMath::Cos(fPhi2*TMath::DegToRad());
yc[1] = fRmax*TMath::Sin(fPhi2*TMath::DegToRad());
xc[2] = fRmin*TMath::Cos(fPhi1*TMath::DegToRad());
yc[2] = fRmin*TMath::Sin(fPhi1*TMath::DegToRad());
xc[3] = fRmin*TMath::Cos(fPhi2*TMath::DegToRad());
yc[3] = fRmin*TMath::Sin(fPhi2*TMath::DegToRad());
Double_t xmin = xc[TMath::LocMin(4, &xc[0])];
Double_t xmax = xc[TMath::LocMax(4, &xc[0])];
Double_t ymin = yc[TMath::LocMin(4, &yc[0])];
Double_t ymax = yc[TMath::LocMax(4, &yc[0])];
Double_t dp = fPhi2-fPhi1;
if (dp<0) dp+=360;
Double_t ddp = -fPhi1;
if (ddp<0) ddp+= 360;
if (ddp>360) ddp-=360;
if (ddp<=dp) xmax = fRmax;
ddp = 90-fPhi1;
if (ddp<0) ddp+= 360;
if (ddp>360) ddp-=360;
if (ddp<=dp) ymax = fRmax;
ddp = 180-fPhi1;
if (ddp<0) ddp+= 360;
if (ddp>360) ddp-=360;
if (ddp<=dp) xmin = -fRmax;
ddp = 270-fPhi1;
if (ddp<0) ddp+= 360;
if (ddp>360) ddp-=360;
if (ddp<=dp) ymin = -fRmax;
fOrigin[0] = (xmax+xmin)/2;
fOrigin[1] = (ymax+ymin)/2;
fOrigin[2] = 0;
fDX = (xmax-xmin)/2;
fDY = (ymax-ymin)/2;
fDZ = fDz;
}
//_____________________________________________________________________________
void TGeoTubeSeg::ComputeNormal(Double_t *point, Double_t *dir, Double_t *norm)
{
// Compute normal to closest surface from POINT.
Double_t saf[3];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
Double_t c1 = TMath::Cos(fPhi1*TMath::DegToRad());
Double_t s1 = TMath::Sin(fPhi1*TMath::DegToRad());
Double_t c2 = TMath::Cos(fPhi2*TMath::DegToRad());
Double_t s2 = TMath::Sin(fPhi2*TMath::DegToRad());
saf[0] = TMath::Abs(fDz-TMath::Abs(point[2]));
saf[1] = (fRmin>1E-10)?TMath::Abs(r-fRmin):TGeoShape::Big();
saf[2] = TMath::Abs(fRmax-r);
Int_t i = TMath::LocMin(3,saf);
if (TGeoShape::IsCloseToPhi(saf[i], point,c1,s1,c2,s2)) {
TGeoShape::NormalPhi(point,dir,norm,c1,s1,c2,s2);
return;
}
if (i==0) {
norm[0] = norm[1] = 0.;
norm[2] = TMath::Sign(1.,dir[2]);
return;
}
norm[2] = 0;
Double_t phi = TMath::ATan2(point[1], point[0]);
norm[0] = TMath::Cos(phi);
norm[1] = TMath::Sin(phi);
if (norm[0]*dir[0]+norm[1]*dir[1]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
}
}
//_____________________________________________________________________________
void TGeoTubeSeg::ComputeNormalS(Double_t *point, Double_t *dir, Double_t *norm,
Double_t rmin, Double_t rmax, Double_t /*dz*/,
Double_t c1, Double_t s1, Double_t c2, Double_t s2)
{
// Compute normal to closest surface from POINT.
Double_t saf[2];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
saf[0] = (rmin>1E-10)?TMath::Abs(r-rmin):TGeoShape::Big();
saf[1] = TMath::Abs(rmax-r);
Int_t i = TMath::LocMin(2,saf);
if (TGeoShape::IsCloseToPhi(saf[i], point,c1,s1,c2,s2)) {
TGeoShape::NormalPhi(point,dir,norm,c1,s1,c2,s2);
return;
}
norm[2] = 0;
Double_t phi = TMath::ATan2(point[1], point[0]);
norm[0] = TMath::Cos(phi);
norm[1] = TMath::Sin(phi);
if (norm[0]*dir[0]+norm[1]*dir[1]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
}
}
//_____________________________________________________________________________
Bool_t TGeoTubeSeg::Contains(Double_t *point) const
{
// test if point is inside this tube segment
// first check if point is inside the tube
if (!TGeoTube::Contains(point)) return kFALSE;
return IsInPhiRange(point, fPhi1, fPhi2);
}
//_____________________________________________________________________________
Int_t TGeoTubeSeg::DistancetoPrimitive(Int_t px, Int_t py)
{
// compute closest distance from point px,py to each corner
Int_t n = gGeoManager->GetNsegments()+1;
const Int_t numPoints = 4*n;
return ShapeDistancetoPrimitive(numPoints, px, py);
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::DistToPhiMin(Double_t *point, Double_t *dir, Double_t s1, Double_t c1,
Double_t s2, Double_t c2, Double_t sm, Double_t cm)
{
// compute distance from poin to both phi planes. Return minimum.
Double_t sfi1=TGeoShape::Big();
Double_t sfi2=TGeoShape::Big();
Double_t s=0;
Double_t un = dir[0]*s1-dir[1]*c1;
if (un!=0) {
s=(point[1]*c1-point[0]*s1)/un;
if (s>=0) {
if (((point[1]+s*dir[1])*cm-(point[0]+s*dir[0])*sm)<=0) sfi1=s;
}
}
un = dir[0]*s2-dir[1]*c2;
if (un!=0) {
s=(point[1]*c2-point[0]*s2)/un;
if (s>=0) {
if (((point[1]+s*dir[1])*cm-(point[0]+s*dir[0])*sm)>=0) sfi2=s;
}
}
return TMath::Min(sfi1, sfi2);
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::DistFromInsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax, Double_t dz,
Double_t c1, Double_t s1, Double_t c2, Double_t s2, Double_t cm, Double_t sm)
{
// compute distance from inside point to surface of the tube segment (static)
Double_t rsq=point[0]*point[0]+point[1]*point[1];
// compute distance to surface
// Do Z
Double_t sz = TGeoShape::Big();
if (dir[2]>0) {
sz = (dz-point[2])/dir[2];
if (sz<=0) return 0.;
} else {
if (dir[2]<0) {
sz = -(dz+point[2])/dir[2];
if (sz<=0) return 0.;
}
}
// Do R
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
// track parralel to Z
if (TMath::Abs(nsq)<1E-10) return sz;
Double_t rdotn=point[0]*dir[0]+point[1]*dir[1];
Double_t b, d;
Double_t sr=TGeoShape::Big();
Bool_t skip_outer = kFALSE;
// inner cylinder
if (rmin>1E-10) {
TGeoTube::DistToTube(rsq,nsq,rdotn,rmin,b,d);
if (d>0) {
sr=-b-d;
if (sr>0)
skip_outer = kTRUE;
}
}
// outer cylinder
if (!skip_outer) {
TGeoTube::DistToTube(rsq,nsq,rdotn,rmax,b,d);
sr=-b+d;
if (sr<0) sr=TGeoShape::Big();
}
// phi planes
Double_t sfmin=TGeoTubeSeg::DistToPhiMin(point, dir, s1, c1, s2, c2, sm, cm);
return TMath::Min(TMath::Min(sz,sr), sfmin);
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::DistFromInside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
{
// compute distance from inside point to surface of the tube segment
if (iact<3 && safe) {
*safe = SafetyS(point, kTRUE, fRmin, fRmax, fDz, fPhi1, fPhi2);
if (iact==0) return TGeoShape::Big();
if ((iact==1) && (*safe>step)) return TGeoShape::Big();
}
Double_t phi1 = fPhi1*TMath::DegToRad();
Double_t phi2 = fPhi2*TMath::DegToRad();
Double_t c1 = TMath::Cos(phi1);
Double_t c2 = TMath::Cos(phi2);
Double_t s1 = TMath::Sin(phi1);
Double_t s2 = TMath::Sin(phi2);
Double_t phim = 0.5*(phi1+phi2);
Double_t cm = TMath::Cos(phim);
Double_t sm = TMath::Sin(phim);
// compute distance to surface
return TGeoTubeSeg::DistFromInsideS(point,dir,fRmin,fRmax,fDz,c1,s1,c2,s2,cm,sm);
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::DistFromOutsideS(Double_t *point, Double_t *dir, Double_t rmin, Double_t rmax,
Double_t dz, Double_t c1, Double_t s1, Double_t c2, Double_t s2,
Double_t cm, Double_t sm, Double_t cdfi)
{
// static method to compute distance to arbitrary tube segment from outside point
Double_t r2, cpsi;
Double_t rsq = point[0]*point[0]+point[1]*point[1];
// check Z planes
Double_t xi, yi, zi;
Double_t s = TGeoShape::Big();
if (TMath::Abs(point[2])>=dz) {
if ((point[2]*dir[2])<0) {
s = (TMath::Abs(point[2])-dz)/TMath::Abs(dir[2]);
xi = point[0]+s*dir[0];
yi = point[1]+s*dir[1];
r2=xi*xi+yi*yi;
if (((rmin*rmin)<=r2) && (r2<=(rmax*rmax))) {
cpsi=(xi*cm+yi*sm)/TMath::Sqrt(r2);
if (cpsi>=cdfi) return s;
}
}
}
// check outer cyl. surface
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
if (TMath::Abs(nsq)<1E-10) return TGeoShape::Big();
Double_t rdotn=point[0]*dir[0]+point[1]*dir[1];
Double_t b,d;
// only r>rmax has to be considered
if (rsq>=rmax*rmax) {
TGeoTube::DistToTube(rsq, nsq, rdotn, rmax, b, d);
if (d>0) {
s=-b-d;
if (s>0) {
zi=point[2]+s*dir[2];
if (TMath::Abs(zi)<=dz) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
cpsi=(xi*cm+yi*sm)/rmax;
if (cpsi>=cdfi) return s;
}
}
}
}
// check inner cylinder
Double_t snxt=TGeoShape::Big();
if (rmin>0) {
TGeoTube::DistToTube(rsq, nsq, rdotn, rmin, b, d);
if (d>0) {
s=-b+d;
if (s>0) {
zi=point[2]+s*dir[2];
if (TMath::Abs(zi)<=dz) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
cpsi=(xi*cm+yi*sm)/rmin;
if (cpsi>=cdfi) snxt=s;
}
}
}
}
// check phi planes
Double_t un=dir[0]*s1-dir[1]*c1;
if (un != 0) {
s=(point[1]*c1-point[0]*s1)/un;
if (s>=0) {
zi=point[2]+s*dir[2];
if (TMath::Abs(zi)<=dz) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
r2=xi*xi+yi*yi;
if ((rmin*rmin<=r2) && (r2<=rmax*rmax)) {
if ((yi*cm-xi*sm)<=0) {
if (s<snxt) snxt=s;
}
}
}
}
}
un=dir[0]*s2-dir[1]*c2;
if (un != 0) {
s=(point[1]*c2-point[0]*s2)/un;
if (s>=0) {
zi=point[2]+s*dir[2];
if (TMath::Abs(zi)<=dz) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
r2=xi*xi+yi*yi;
if ((rmin*rmin<=r2) && (r2<=rmax*rmax)) {
if ((yi*cm-xi*sm)>=0) {
if (s<snxt) snxt=s;
}
}
}
}
}
return snxt;
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::DistFromOutside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
{
// compute distance from outside point to surface of the tube segment
// fist localize point w.r.t tube
if (iact<3 && safe) {
*safe = SafetyS(point, kFALSE, fRmin, fRmax, fDz, fPhi1, fPhi2);
if (iact==0) return TGeoShape::Big();
if ((iact==1) && (step<=*safe)) return TGeoShape::Big();
}
Double_t phi1 = fPhi1*TMath::DegToRad();
Double_t phi2 = fPhi2*TMath::DegToRad();
Double_t c1 = TMath::Cos(phi1);
Double_t s1 = TMath::Sin(phi1);
Double_t c2 = TMath::Cos(phi2);
Double_t s2 = TMath::Sin(phi2);
Double_t fio = 0.5*(phi1+phi2);
Double_t cm = TMath::Cos(fio);
Double_t sm = TMath::Sin(fio);
Double_t dfi = 0.5*(phi2-phi1);
Double_t cdfi = TMath::Cos(dfi);
// find distance to shape
return TGeoTubeSeg::DistFromOutsideS(point, dir, fRmin, fRmax, fDz, c1, s1, c2, s2, cm, sm, cdfi);
}
//_____________________________________________________________________________
TGeoVolume *TGeoTubeSeg::Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv,
Double_t start, Double_t step)
{
//--- Divide this tube segment shape belonging to volume "voldiv" into ndiv volumes
// called divname, from start position with the given step. Returns pointer
// to created division cell volume in case of Z divisions. For radialdivision
// creates all volumes with different shapes and returns pointer to volume that
// was divided. In case a wrong division axis is supplied, returns pointer to
// volume that was divided.
TGeoShape *shape; //--- shape to be created
TGeoVolume *vol; //--- division volume to be created
TGeoVolumeMulti *vmulti; //--- generic divided volume
TGeoPatternFinder *finder; //--- finder to be attached
TString opt = ""; //--- option to be attached
Double_t dphi;
Int_t id;
Double_t end = start+ndiv*step;
switch (iaxis) {
case 1: //--- R division
finder = new TGeoPatternCylR(voldiv, ndiv, start, end);
vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
voldiv->SetFinder(finder);
finder->SetDivIndex(voldiv->GetNdaughters());
for (id=0; id<ndiv; id++) {
shape = new TGeoTubeSeg(start+id*step, start+(id+1)*step, fDz, fPhi1, fPhi2);
vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
vmulti->AddVolume(vol);
opt = "R";
voldiv->AddNodeOffset(vol, id, 0, opt.Data());
((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
}
return vmulti;
case 2: //--- Phi division
dphi = fPhi2-fPhi1;
if (dphi<0) dphi+=360.;
if (step<=0) {step=dphi/ndiv; start=fPhi1; end=fPhi2;}
finder = new TGeoPatternCylPhi(voldiv, ndiv, start, end);
voldiv->SetFinder(finder);
finder->SetDivIndex(voldiv->GetNdaughters());
shape = new TGeoTubeSeg(fRmin, fRmax, fDz, -step/2, step/2);
vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
vmulti->AddVolume(vol);
opt = "Phi";
for (id=0; id<ndiv; id++) {
voldiv->AddNodeOffset(vol, id, start+id*step+step/2, opt.Data());
((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
}
return vmulti;
case 3: //--- Z division
finder = new TGeoPatternZ(voldiv, ndiv, start, end);
voldiv->SetFinder(finder);
finder->SetDivIndex(voldiv->GetNdaughters());
shape = new TGeoTubeSeg(fRmin, fRmax, step/2, fPhi1, fPhi2);
vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
vmulti->AddVolume(vol);
opt = "Z";
for (id=0; id<ndiv; id++) {
voldiv->AddNodeOffset(vol, id, start+step/2+id*step, opt.Data());
((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
}
return vmulti;
default:
Error("Divide", "In shape %s wrong axis type for division", GetName());
return 0;
}
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::GetAxisRange(Int_t iaxis, Double_t &xlo, Double_t &xhi) const
{
// Get range of shape for a given axis.
xlo = 0;
xhi = 0;
Double_t dx = 0;
switch (iaxis) {
case 1:
xlo = fRmin;
xhi = fRmax;
dx = xhi-xlo;
return dx;
case 2:
xlo = fPhi1;
xhi = fPhi2;
dx = xhi-xlo;
return dx;
case 3:
xlo = -fDz;
xhi = fDz;
dx = xhi-xlo;
return dx;
}
return dx;
}
//_____________________________________________________________________________
void TGeoTubeSeg::GetBoundingCylinder(Double_t *param) const
{
//--- Fill vector param[4] with the bounding cylinder parameters. The order
// is the following : Rmin, Rmax, Phi1, Phi2
param[0] = fRmin;
param[0] *= param[0];
param[1] = fRmax;
param[1] *= param[1];
param[2] = fPhi1;
param[3] = fPhi2;
}
//_____________________________________________________________________________
TGeoShape *TGeoTubeSeg::GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix * /*mat*/) const
{
// in case shape has some negative parameters, these has to be computed
// in order to fit the mother
if (!TestShapeBit(kGeoRunTimeShape)) return 0;
if (!mother->TestShapeBit(kGeoTube)) {
Error("GetMakeRuntimeShape", "Invalid mother for shape %s", GetName());
return 0;
}
Double_t rmin, rmax, dz;
rmin = fRmin;
rmax = fRmax;
dz = fDz;
if (fDz<0) dz=((TGeoTube*)mother)->GetDz();
if (fRmin<0)
rmin = ((TGeoTube*)mother)->GetRmin();
if ((fRmax<0) || (fRmax<=fRmin))
rmax = ((TGeoTube*)mother)->GetRmax();
return (new TGeoTubeSeg(rmin, rmax, dz, fPhi1, fPhi2));
}
//_____________________________________________________________________________
void TGeoTubeSeg::InspectShape() const
{
// print shape parameters
printf("*** Shape %s: TGeoTubeSeg ***\n", GetName());
printf(" Rmin = %11.5f\n", fRmin);
printf(" Rmax = %11.5f\n", fRmax);
printf(" dz = %11.5f\n", fDz);
printf(" phi1 = %11.5f\n", fPhi1);
printf(" phi2 = %11.5f\n", fPhi2);
printf(" Bounding box:\n");
TGeoBBox::InspectShape();
}
//_____________________________________________________________________________
TBuffer3D *TGeoTubeSeg::MakeBuffer3D() const
{
// Creates a TBuffer3D describing *this* shape.
// Coordinates are in local reference frame.
Int_t n = gGeoManager->GetNsegments()+1;
Int_t NbPnts = 4*n;
Int_t NbSegs = 2*NbPnts;
Int_t NbPols = NbPnts-2;
TBuffer3D* buff = new TBuffer3D(3*NbPnts, 3*NbSegs, 6*NbPols);
buff->fType = TBuffer3D::kTUBS;
buff->fNbPnts = NbPnts;
buff->fNbSegs = NbSegs;
buff->fNbPols = NbPols;
SetPoints(buff->fPnts);
SetSegsAndPols(buff);
return buff;
}
//_____________________________________________________________________________
void TGeoTubeSeg::Paint(Option_t *option)
{
// Paint this shape according to option
// Allocate the necessary spage in gPad->fBuffer3D to store this shape
Int_t n = gGeoManager->GetNsegments()+1;
Int_t NbPnts = 4*n;
Int_t NbSegs = 2*NbPnts;
Int_t NbPols = NbPnts-2;
TBuffer3D *buff = gPad->AllocateBuffer3D(3*NbPnts, 3*NbSegs, 6*NbPols);
if (!buff) return;
buff->fType = TBuffer3D::kTUBS;
TGeoVolume *vol = gGeoManager->GetPaintVolume();
buff->fId = vol;
// Fill gPad->fBuffer3D. Points coordinates are in Master space
buff->fNbPnts = NbPnts;
buff->fNbSegs = NbSegs;
buff->fNbPols = NbPols;
// In case of option "size" it is not necessary to fill the buffer
if (strstr(option,"size")) {
buff->Paint(option);
return;
}
SetPoints(buff->fPnts);
TransformPoints(buff);
// Basic colors: 0, 1, ... 7
buff->fColor = vol->GetLineColor();
SetSegsAndPols(buff);
// Paint gPad->fBuffer3D
buff->Paint(option);
}
//_____________________________________________________________________________
void TGeoTubeSeg::SetSegsAndPols(TBuffer3D *buff) const
{
// Fill TBuffer3D structure for segments and polygons.
Int_t i, j;
Int_t n = gGeoManager->GetNsegments()+1;
Int_t c = (((buff->fColor) %8) -1) * 4;
if (c < 0) c = 0;
memset(buff->fSegs, 0, buff->fNbSegs*3*sizeof(Int_t));
for (i = 0; i < 4; i++) {
for (j = 1; j < n; j++) {
buff->fSegs[(i*n+j-1)*3 ] = c;
buff->fSegs[(i*n+j-1)*3+1] = i*n+j-1;
buff->fSegs[(i*n+j-1)*3+2] = i*n+j;
}
}
for (i = 4; i < 6; i++) {
for (j = 0; j < n; j++) {
buff->fSegs[(i*n+j)*3 ] = c+1;
buff->fSegs[(i*n+j)*3+1] = (i-4)*n+j;
buff->fSegs[(i*n+j)*3+2] = (i-2)*n+j;
}
}
for (i = 6; i < 8; i++) {
for (j = 0; j < n; j++) {
buff->fSegs[(i*n+j)*3 ] = c;
buff->fSegs[(i*n+j)*3+1] = 2*(i-6)*n+j;
buff->fSegs[(i*n+j)*3+2] = (2*(i-6)+1)*n+j;
}
}
Int_t indx = 0;
memset(buff->fPols, 0, buff->fNbPols*6*sizeof(Int_t));
i = 0;
for (j = 0; j < n-1; j++) {
buff->fPols[indx++] = c;
buff->fPols[indx++] = 4;
buff->fPols[indx++] = (4+i)*n+j+1;
buff->fPols[indx++] = (2+i)*n+j;
buff->fPols[indx++] = (4+i)*n+j;
buff->fPols[indx++] = i*n+j;
}
i = 1;
for (j = 0; j < n-1; j++) {
buff->fPols[indx++] = c;
buff->fPols[indx++] = 4;
buff->fPols[indx++] = i*n+j;
buff->fPols[indx++] = (4+i)*n+j;
buff->fPols[indx++] = (2+i)*n+j;
buff->fPols[indx++] = (4+i)*n+j+1;
}
i = 2;
for (j = 0; j < n-1; j++) {
buff->fPols[indx++] = c+i;
buff->fPols[indx++] = 4;
buff->fPols[indx++] = (i-2)*2*n+j;
buff->fPols[indx++] = (4+i)*n+j;
buff->fPols[indx++] = ((i-2)*2+1)*n+j;
buff->fPols[indx++] = (4+i)*n+j+1;
}
i = 3;
for (j = 0; j < n-1; j++) {
buff->fPols[indx++] = c+i;
buff->fPols[indx++] = 4;
buff->fPols[indx++] = (4+i)*n+j+1;
buff->fPols[indx++] = ((i-2)*2+1)*n+j;
buff->fPols[indx++] = (4+i)*n+j;
buff->fPols[indx++] = (i-2)*2*n+j;
}
buff->fPols[indx++] = c+2;
buff->fPols[indx++] = 4;
buff->fPols[indx++] = 6*n;
buff->fPols[indx++] = 4*n;
buff->fPols[indx++] = 7*n;
buff->fPols[indx++] = 5*n;
buff->fPols[indx++] = c+2;
buff->fPols[indx++] = 4;
buff->fPols[indx++] = 6*n-1;
buff->fPols[indx++] = 8*n-1;
buff->fPols[indx++] = 5*n-1;
buff->fPols[indx++] = 7*n-1;
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::Safety(Double_t *point, Bool_t in) const
{
// computes the closest distance from given point to this shape, according
// to option. The matching point on the shape is stored in spoint.
Double_t saf[3];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
Double_t safe = TGeoShape::Big();
if (in) {
saf[0] = fDz-TMath::Abs(point[2]);
saf[1] = r-fRmin;
saf[2] = fRmax-r;
safe = saf[TMath::LocMin(3,saf)];
} else {
// at least one positive
saf[0] = TMath::Abs(point[2])-fDz;
saf[1] = fRmin-r;
saf[2] = r-fRmax;
safe = saf[TMath::LocMax(3,saf)];
}
Double_t safphi = TGeoShape::SafetyPhi(point,in,fPhi1,fPhi2);
if (in) return TMath::Min(safe, safphi);
return TMath::Max(safe, safphi);
}
//_____________________________________________________________________________
Double_t TGeoTubeSeg::SafetyS(Double_t *point, Bool_t in, Double_t rmin, Double_t rmax, Double_t dz,
Double_t phi1, Double_t phi2, Int_t skipz)
{
// Static method to compute the closest distance from given point to this shape.
Double_t saf[3];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
switch (skipz) {
case 1: // skip lower Z plane
saf[0] = dz - point[2];
break;
case 2: // skip upper Z plane
saf[0] = dz + point[2];
break;
case 3: // skip both
saf[0] = TGeoShape::Big();
break;
default:
saf[0] = dz-TMath::Abs(point[2]);
}
saf[1] = r-rmin;
saf[2] = rmax-r;
Double_t safphi = TGeoShape::SafetyPhi(point,in,phi1,phi2);
Double_t safe = TGeoShape::Big();
if (in) {
safe = saf[TMath::LocMin(3,saf)];
return TMath::Min(safe, safphi);
}
for (Int_t i=0; i<3; i++) saf[i]=-saf[i];
safe = saf[TMath::LocMax(3,saf)];
return TMath::Max(safe, safphi);
}
//_____________________________________________________________________________
void TGeoTubeSeg::SetTubsDimensions(Double_t rmin, Double_t rmax, Double_t dz,
Double_t phi1, Double_t phi2)
{
fRmin = rmin;
fRmax = rmax;
fDz = dz;
fPhi1 = phi1;
if (fPhi1 < 0) fPhi1+=360.;
fPhi2 = phi2;
while (fPhi2<=fPhi1) fPhi2+=360.;
if (fPhi1==fPhi2) Error("SetTubsDimensions", "In shape %s invalid phi1=%g, phi2=%g\n", GetName(), fPhi1, fPhi2);
}
//_____________________________________________________________________________
void TGeoTubeSeg::SetDimensions(Double_t *param)
{
Double_t rmin = param[0];
Double_t rmax = param[1];
Double_t dz = param[2];
Double_t phi1 = param[3];
Double_t phi2 = param[4];
SetTubsDimensions(rmin, rmax, dz, phi1, phi2);
}
//_____________________________________________________________________________
void TGeoTubeSeg::SetPoints(Double_t *buff) const
{
// create sphere mesh points
Double_t dz;
Int_t j, n;
Double_t phi, phi1, phi2, dphi;
phi1 = fPhi1;
phi2 = fPhi2;
if (phi2<phi1) phi2+=360.;
n = gGeoManager->GetNsegments()+1;
dphi = (phi2-phi1)/(n-1);
dz = fDz;
if (buff) {
Int_t indx = 0;
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmin * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmin * TMath::Sin(phi);
indx++;
buff[indx+6*n] = dz;
buff[indx] =-dz;
indx++;
}
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmax * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmax * TMath::Sin(phi);
indx++;
buff[indx+6*n]= dz;
buff[indx] =-dz;
indx++;
}
}
}
//_____________________________________________________________________________
void TGeoTubeSeg::SetPoints(Float_t *buff) const
{
// create sphere mesh points
Double_t dz;
Int_t j, n;
Double_t phi, phi1, phi2, dphi;
phi1 = fPhi1;
phi2 = fPhi2;
if (phi2<phi1) phi2+=360.;
n = gGeoManager->GetNsegments()+1;
dphi = (phi2-phi1)/(n-1);
dz = fDz;
if (buff) {
Int_t indx = 0;
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmin * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmin * TMath::Sin(phi);
indx++;
buff[indx+6*n] = dz;
buff[indx] =-dz;
indx++;
}
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmax * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmax * TMath::Sin(phi);
indx++;
buff[indx+6*n]= dz;
buff[indx] =-dz;
indx++;
}
}
}
//_____________________________________________________________________________
Int_t TGeoTubeSeg::GetNmeshVertices() const
{
// Return number of vertices of the mesh representation
Int_t n = gGeoManager->GetNsegments()+1;
Int_t numPoints = n*4;
return numPoints;
}
//_____________________________________________________________________________
void TGeoTubeSeg::Sizeof3D() const
{
///// fill size of this 3-D object
/// TVirtualGeoPainter *painter = gGeoManager->GetGeomPainter();
/// if (!painter) return;
///
/// Int_t n = gGeoManager->GetNsegments()+1;
/// Int_t numPoints = n*4;
/// Int_t numSegs = n*8;
/// Int_t numPolys = n*4-2;
///
/// painter->AddSize3D(numPoints, numSegs, numPolys);
}
ClassImp(TGeoCtub)
TGeoCtub::TGeoCtub()
{
// default ctor
fNlow[0] = fNlow[1] = fNhigh[0] = fNhigh[1] = 0.;
fNlow[2] = -1;
fNhigh[2] = 1;
}
//_____________________________________________________________________________
TGeoCtub::TGeoCtub(Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2,
Double_t lx, Double_t ly, Double_t lz, Double_t tx, Double_t ty, Double_t tz)
:TGeoTubeSeg(rmin, rmax, dz, phi1, phi2)
{
// ctor
fNlow[0] = lx;
fNlow[1] = ly;
fNlow[2] = lz;
fNhigh[0] = tx;
fNhigh[1] = ty;
fNhigh[2] = tz;
SetShapeBit(kGeoCtub);
ComputeBBox();
}
//_____________________________________________________________________________
TGeoCtub::TGeoCtub(const char *name, Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2,
Double_t lx, Double_t ly, Double_t lz, Double_t tx, Double_t ty, Double_t tz)
:TGeoTubeSeg(name, rmin, rmax, dz, phi1, phi2)
{
// ctor
fNlow[0] = lx;
fNlow[1] = ly;
fNlow[2] = lz;
fNhigh[0] = tx;
fNhigh[1] = ty;
fNhigh[2] = tz;
SetShapeBit(kGeoCtub);
ComputeBBox();
}
//_____________________________________________________________________________
TGeoCtub::TGeoCtub(Double_t *params)
:TGeoTubeSeg(0,0,0,0,0)
{
// ctor with parameters
SetCtubDimensions(params[0], params[1], params[2], params[3], params[4], params[5],
params[6], params[7], params[8], params[9], params[10]);
SetShapeBit(kGeoCtub);
}
//_____________________________________________________________________________
TGeoCtub::~TGeoCtub()
{
// dtor
}
//_____________________________________________________________________________
void TGeoCtub::ComputeBBox()
{
// compute minimum bounding box of the ctub
TGeoTubeSeg::ComputeBBox();
if ((fNlow[2]>-(1E-10)) || (fNhigh[2]<1E-10)) {
Error("ComputeBBox", "In shape %s wrong definition of cut planes", GetName());
return;
}
Double_t xc=0, yc=0;
Double_t zmin=0, zmax=0;
Double_t z1;
Double_t z[8];
// check if nxy is in the phi range
Double_t phi_low = TMath::ATan2(fNlow[1], fNlow[0]) *TMath::RadToDeg();
Double_t phi_hi = TMath::ATan2(fNhigh[1], fNhigh[0]) *TMath::RadToDeg();
Bool_t in_range_low = kFALSE;
Bool_t in_range_hi = kFALSE;
Int_t i;
for (i=0; i<2; i++) {
if (phi_low<0) phi_low+=360.;
Double_t dphi = fPhi2 -fPhi1;
if (dphi < 0) dphi+=360.;
Double_t ddp = phi_low-fPhi1;
if (ddp<0) ddp += 360.;
if (ddp <= dphi) {
xc = fRmin*TMath::Cos(phi_low*TMath::DegToRad());
yc = fRmin*TMath::Sin(phi_low*TMath::DegToRad());
z1 = GetZcoord(xc, yc, -fDz);
xc = fRmax*TMath::Cos(phi_low*TMath::DegToRad());
yc = fRmax*TMath::Sin(phi_low*TMath::DegToRad());
z1 = TMath::Min(z1, GetZcoord(xc, yc, -fDz));
if (in_range_low)
zmin = TMath::Min(zmin, z1);
else
zmin = z1;
in_range_low = kTRUE;
}
phi_low += 180;
if (phi_low>360) phi_low-=360.;
}
for (i=0; i<2; i++) {
if (phi_hi<0) phi_hi+=360.;
Double_t dphi = fPhi2 -fPhi1;
if (dphi < 0) dphi+=360.;
Double_t ddp = phi_hi-fPhi1;
if (ddp<0) ddp += 360.;
if (ddp <= dphi) {
xc = fRmin*TMath::Cos(phi_hi*TMath::DegToRad());
yc = fRmin*TMath::Sin(phi_hi*TMath::DegToRad());
z1 = GetZcoord(xc, yc, fDz);
xc = fRmax*TMath::Cos(phi_hi*TMath::DegToRad());
yc = fRmax*TMath::Sin(phi_hi*TMath::DegToRad());
z1 = TMath::Max(z1, GetZcoord(xc, yc, fDz));
if (in_range_hi)
zmax = TMath::Max(zmax, z1);
else
zmax = z1;
in_range_hi = kTRUE;
}
phi_hi += 180;
if (phi_hi>360) phi_hi-=360.;
}
xc = fRmin*TMath::Cos(fPhi1*TMath::DegToRad());
yc = fRmin*TMath::Sin(fPhi1*TMath::DegToRad());
z[0] = GetZcoord(xc, yc, -fDz);
z[4] = GetZcoord(xc, yc, fDz);
xc = fRmin*TMath::Cos(fPhi2*TMath::DegToRad());
yc = fRmin*TMath::Sin(fPhi2*TMath::DegToRad());
z[1] = GetZcoord(xc, yc, -fDz);
z[5] = GetZcoord(xc, yc, fDz);
xc = fRmax*TMath::Cos(fPhi1*TMath::DegToRad());
yc = fRmax*TMath::Sin(fPhi1*TMath::DegToRad());
z[2] = GetZcoord(xc, yc, -fDz);
z[6] = GetZcoord(xc, yc, fDz);
xc = fRmax*TMath::Cos(fPhi2*TMath::DegToRad());
yc = fRmax*TMath::Sin(fPhi2*TMath::DegToRad());
z[3] = GetZcoord(xc, yc, -fDz);
z[7] = GetZcoord(xc, yc, fDz);
z1 = z[TMath::LocMin(4, &z[0])];
if (in_range_low)
zmin = TMath::Min(zmin, z1);
else
zmin = z1;
z1 = z[TMath::LocMax(4, &z[4])+4];
if (in_range_hi)
zmax = TMath::Max(zmax, z1);
else
zmax = z1;
fDZ = 0.5*(zmax-zmin);
fOrigin[2] = 0.5*(zmax+zmin);
}
//_____________________________________________________________________________
void TGeoCtub::ComputeNormal(Double_t *point, Double_t *dir, Double_t *norm)
{
// Compute normal to closest surface from POINT.
Double_t saf[4];
Bool_t isseg = kTRUE;
if (TMath::Abs(fPhi2-fPhi1-360.)<1E-8) isseg=kFALSE;
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
saf[0] = TMath::Abs(point[0]*fNlow[0] + point[1]*fNlow[1] + (fDz+point[2])*fNlow[2]);
saf[1] = TMath::Abs(point[0]*fNhigh[0] + point[1]*fNhigh[1] - (fDz-point[2])*fNhigh[2]);
saf[2] = (fRmin>1E-10)?TMath::Abs(r-fRmin):TGeoShape::Big();
saf[3] = TMath::Abs(fRmax-r);
Int_t i = TMath::LocMin(4,saf);
if (isseg) {
Double_t c1 = TMath::Cos(fPhi1*TMath::DegToRad());
Double_t s1 = TMath::Sin(fPhi1*TMath::DegToRad());
Double_t c2 = TMath::Cos(fPhi2*TMath::DegToRad());
Double_t s2 = TMath::Sin(fPhi2*TMath::DegToRad());
if (TGeoShape::IsCloseToPhi(saf[i], point,c1,s1,c2,s2)) {
TGeoShape::NormalPhi(point,dir,norm,c1,s1,c2,s2);
return;
}
}
if (i==0) {
memcpy(norm, fNlow, 3*sizeof(Double_t));
if (norm[0]*dir[0]+norm[1]*dir[1]+norm[2]*dir[2]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
norm[2] = -norm[2];
}
return;
}
if (i==1) {
memcpy(norm, fNhigh, 3*sizeof(Double_t));
if (norm[0]*dir[0]+norm[1]*dir[1]+norm[2]*dir[2]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
norm[2] = -norm[2];
}
return;
}
norm[2] = 0;
Double_t phi = TMath::ATan2(point[1], point[0]);
norm[0] = TMath::Cos(phi);
norm[1] = TMath::Sin(phi);
if (norm[0]*dir[0]+norm[1]*dir[1]<0) {
norm[0] = -norm[0];
norm[1] = -norm[1];
}
}
//_____________________________________________________________________________
Bool_t TGeoCtub::Contains(Double_t *point) const
{
// check if point is contained in the cut tube
// check the lower cut plane
Double_t zin = point[0]*fNlow[0]+point[1]*fNlow[1]+(point[2]+fDz)*fNlow[2];
if (zin>0) return kFALSE;
// check the higher cut plane
zin = point[0]*fNhigh[0]+point[1]*fNhigh[1]+(point[2]-fDz)*fNhigh[2];
if (zin>0) return kFALSE;
// check radius
Double_t r2 = point[0]*point[0]+point[1]*point[1];
if ((r2<fRmin*fRmin) || (r2>fRmax*fRmax)) return kFALSE;
// check phi
Double_t phi = TMath::ATan2(point[1], point[0]) * TMath::RadToDeg();
if (phi < 0 ) phi+=360.;
Double_t dphi = fPhi2 -fPhi1;
Double_t ddp = phi-fPhi1;
if (ddp<0) ddp += 360.;
// if (ddp>360) ddp-=360;
if (ddp > dphi) return kFALSE;
return kTRUE;
}
//_____________________________________________________________________________
Double_t TGeoCtub::GetAxisRange(Int_t iaxis, Double_t &xlo, Double_t &xhi) const
{
// Get range of shape for a given axis.
xlo = 0;
xhi = 0;
Double_t dx = 0;
switch (iaxis) {
case 1:
xlo = fRmin;
xhi = fRmax;
dx = xhi-xlo;
return dx;
case 2:
xlo = fPhi1;
xhi = fPhi2;
dx = xhi-xlo;
return dx;
}
return dx;
}
//_____________________________________________________________________________
Double_t TGeoCtub::GetZcoord(Double_t xc, Double_t yc, Double_t zc) const
{
// compute real Z coordinate of a point belonging to either lower or
// higher caps (z should be either +fDz or -fDz)
Double_t newz = 0;
if (zc<0) newz = -fDz-(xc*fNlow[0]+yc*fNlow[1])/fNlow[2];
else newz = fDz-(xc*fNhigh[0]+yc*fNhigh[1])/fNhigh[2];
return newz;
}
//_____________________________________________________________________________
Double_t TGeoCtub::DistFromOutside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
{
// compute distance from outside point to surface of the cut tube
if (iact<3 && safe) {
*safe = Safety(point, kFALSE);
if (iact==0) return TGeoShape::Big();
if ((iact==1) && (step<=*safe)) return TGeoShape::Big();
}
Double_t saf[2];
saf[0] = point[0]*fNlow[0] + point[1]*fNlow[1] + (fDz+point[2])*fNlow[2];
saf[1] = point[0]*fNhigh[0] + point[1]*fNhigh[1] + (point[2]-fDz)*fNhigh[2];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
Double_t c1=0,s1=0,c2=0,s2=0;
Double_t fio=0, cfio=0, sfio=0, dfi=0, cdfi=0, cpsi=0;
Double_t phi1 = fPhi1*TMath::DegToRad();
Double_t phi2 = fPhi2*TMath::DegToRad();
Bool_t tub = kFALSE;
if (TMath::Abs(fPhi2-fPhi1-360.)<1E-8) tub = kTRUE;
if (!tub) {
c1 = TMath::Cos(phi1);
c2 = TMath::Cos(phi2);
s1 = TMath::Sin(phi1);
s2 = TMath::Sin(phi2);
fio = 0.5*(phi1+phi2);
cfio = TMath::Cos(fio);
sfio = TMath::Sin(fio);
dfi = 0.5*(phi2-phi1);
cdfi = TMath::Cos(dfi);
}
// find distance to shape
Double_t r2;
Double_t calf = dir[0]*fNlow[0]+dir[1]*fNlow[1]+dir[2]*fNlow[2];
// check Z planes
Double_t xi, yi, zi;
Double_t s = TGeoShape::Big();
if (saf[0]>0) {
if (calf<0) {
s = -saf[0]/calf;
xi = point[0]+s*dir[0];
yi = point[1]+s*dir[1];
r2=xi*xi+yi*yi;
if (((fRmin*fRmin)<=r2) && (r2<=(fRmax*fRmax))) {
if (tub) return s;
cpsi=(xi*cfio+yi*sfio)/TMath::Sqrt(r2);
if (cpsi>=cdfi) return s;
}
}
}
calf = dir[0]*fNhigh[0]+dir[1]*fNhigh[1]+dir[2]*fNhigh[2];
if (saf[1]>0) {
if (calf<0) {
s = -saf[1]/calf;
xi = point[0]+s*dir[0];
yi = point[1]+s*dir[1];
r2=xi*xi+yi*yi;
if (((fRmin*fRmin)<=r2) && (r2<=(fRmax*fRmax))) {
if (tub) return s;
cpsi=(xi*cfio+yi*sfio)/TMath::Sqrt(r2);
if (cpsi>=cdfi) return s;
}
}
}
// check outer cyl. surface
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
if (TMath::Abs(nsq)<1E-10) return TGeoShape::Big();
Double_t rdotn=point[0]*dir[0]+point[1]*dir[1];
Double_t b,d;
// only r>fRmax has to be considered
if (r>fRmax) {
TGeoTube::DistToTube(rsq, nsq, rdotn, fRmax, b, d);
if (d>0) {
s=-b-d;
if (s>0) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
zi=point[2]+s*dir[2];
if ((-xi*fNlow[0]-yi*fNlow[1]-(zi+fDz)*fNlow[2])>0) {
if ((-xi*fNhigh[0]-yi*fNhigh[1]+(fDz-zi)*fNhigh[2])>0) {
if (tub) return s;
cpsi=(xi*cfio+yi*sfio)/fRmax;
if (cpsi>=cdfi) return s;
}
}
}
}
}
// check inner cylinder
Double_t snxt=TGeoShape::Big();
if (fRmin>0) {
TGeoTube::DistToTube(rsq, nsq, rdotn, fRmin, b, d);
if (d>0) {
s=-b+d;
if (s>0) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
zi=point[2]+s*dir[2];
if ((-xi*fNlow[0]-yi*fNlow[1]-(zi+fDz)*fNlow[2])>0) {
if ((-xi*fNhigh[0]-yi*fNhigh[1]+(fDz-zi)*fNhigh[2])>0) {
if (tub) return s;
cpsi=(xi*cfio+yi*sfio)/fRmin;
if (cpsi>=cdfi) snxt=s;
}
}
}
}
}
// check phi planes
if (tub) return snxt;
Double_t un=dir[0]*s1-dir[1]*c1;
if (un != 0) {
s=(point[1]*c1-point[0]*s1)/un;
if (s>=0) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
zi=point[2]+s*dir[2];
if ((-xi*fNlow[0]-yi*fNlow[1]-(zi+fDz)*fNlow[2])>0) {
if ((-xi*fNhigh[0]-yi*fNhigh[1]+(fDz-zi)*fNhigh[2])>0) {
r2=xi*xi+yi*yi;
if ((fRmin*fRmin<=r2) && (r2<=fRmax*fRmax)) {
if ((yi*cfio-xi*sfio)<=0) {
if (s<snxt) snxt=s;
}
}
}
}
}
}
un=dir[0]*s2-dir[1]*c2;
if (un != 0) {
s=(point[1]*c2-point[0]*s2)/un;
if (s>=0) {
xi=point[0]+s*dir[0];
yi=point[1]+s*dir[1];
zi=point[2]+s*dir[2];
if ((-xi*fNlow[0]-yi*fNlow[1]-(zi+fDz)*fNlow[2])>0) {
if ((-xi*fNhigh[0]-yi*fNhigh[1]+(fDz-zi)*fNhigh[2])>0) {
r2=xi*xi+yi*yi;
if ((fRmin*fRmin<=r2) && (r2<=fRmax*fRmax)) {
if ((yi*cfio-xi*sfio)>=0) {
if (s<snxt) snxt=s;
}
}
}
}
}
}
return snxt;
}
//_____________________________________________________________________________
Double_t TGeoCtub::DistFromInside(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
{
// compute distance from inside point to surface of the cut tube
if (iact<3 && safe) *safe = Safety(point, kTRUE);
if (iact==0) return TGeoShape::Big();
if ((iact==1) && (*safe>step)) return TGeoShape::Big();
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t c1=0,s1=0,c2=0,s2=0,cm=0,sm=0,phim=0;
Double_t phi1 = fPhi1*TMath::DegToRad();
Double_t phi2 = fPhi2*TMath::DegToRad();
Bool_t tub = kFALSE;
if (TMath::Abs(fPhi2-fPhi1-360.)<1E-8) tub = kTRUE;
if (!tub) {
if (phi2<phi1) phi2+=2.*TMath::Pi();
phim = 0.5*(phi1+phi2);
c1 = TMath::Cos(phi1);
c2 = TMath::Cos(phi2);
s1 = TMath::Sin(phi1);
s2 = TMath::Sin(phi2);
cm = TMath::Cos(phim);
sm = TMath::Sin(phim);
}
// compute distance to surface
// Do Z
Double_t sz = TGeoShape::Big();
Double_t saf[2];
saf[0] = -point[0]*fNlow[0] - point[1]*fNlow[1] - (fDz+point[2])*fNlow[2];
saf[1] = -point[0]*fNhigh[0] - point[1]*fNhigh[1] + (fDz-point[2])*fNhigh[2];
Double_t calf = dir[0]*fNlow[0]+dir[1]*fNlow[1]+dir[2]*fNlow[2];
if (calf>0) sz = saf[0]/calf;
Double_t sz1=TGeoShape::Big();
calf = dir[0]*fNhigh[0]+dir[1]*fNhigh[1]+dir[2]*fNhigh[2];
if (calf>0) {
sz1 = saf[1]/calf;
if (sz1<sz) sz = sz1;
}
// Do R
Double_t nsq=dir[0]*dir[0]+dir[1]*dir[1];
// track parralel to Z
if (TMath::Abs(nsq)<1E-10) return sz;
Double_t rdotn=point[0]*dir[0]+point[1]*dir[1];
Double_t sr=TGeoShape::Big();
Double_t b, d;
Bool_t skip_outer = kFALSE;
// inner cylinder
if (fRmin>1E-10) {
TGeoTube::DistToTube(rsq, nsq, rdotn, fRmin, b, d);
if (d>0) {
sr=-b-d;
if (sr>0) skip_outer = kTRUE;
}
}
// outer cylinder
if (!skip_outer) {
TGeoTube::DistToTube(rsq, nsq, rdotn, fRmax, b, d);
if (d>0) {
sr=-b+d;
if (sr<0) sr=TGeoShape::Big();
} else {
Error("DistFromInside", "In shape %s cannot get outside !", GetName());
}
}
// phi planes
Double_t sfmin = TGeoShape::Big();
if (!tub) sfmin=DistToPhiMin(point, dir, s1, c1, s2, c2, sm, cm);;
return TMath::Min(TMath::Min(sz,sr), sfmin);
}
//_____________________________________________________________________________
TGeoVolume *TGeoCtub::Divide(TGeoVolume * /*voldiv*/, const char * /*divname*/, Int_t /*iaxis*/, Int_t /*ndiv*/,
Double_t /*start*/, Double_t /*step*/)
{
Warning("Divide", "In shape %s division of a cut tube not implemented", GetName());
return 0;
}
//_____________________________________________________________________________
TGeoShape *TGeoCtub::GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix * /*mat*/) const
{
// in case shape has some negative parameters, these has to be computed
// in order to fit the mother
if (!TestShapeBit(kGeoRunTimeShape)) return 0;
if (!mother->TestShapeBit(kGeoTube)) {
Error("GetMakeRuntimeShape", "Invalid mother for shape %s", GetName());
return 0;
}
Double_t rmin, rmax, dz;
rmin = fRmin;
rmax = fRmax;
dz = fDz;
if (fDz<0) dz=((TGeoTube*)mother)->GetDz();
if (fRmin<0)
rmin = ((TGeoTube*)mother)->GetRmin();
if ((fRmax<0) || (fRmax<=fRmin))
rmax = ((TGeoTube*)mother)->GetRmax();
return (new TGeoCtub(rmin, rmax, dz, fPhi1, fPhi2, fNlow[0], fNlow[1], fNlow[2],
fNhigh[0], fNhigh[1], fNhigh[2]));
}
//_____________________________________________________________________________
void TGeoCtub::InspectShape() const
{
// print shape parameters
printf("*** Shape %s: TGeoCtub ***\n", GetName());
printf(" lx = %11.5f\n", fNlow[0]);
printf(" ly = %11.5f\n", fNlow[1]);
printf(" lz = %11.5f\n", fNlow[2]);
printf(" tx = %11.5f\n", fNhigh[0]);
printf(" ty = %11.5f\n", fNhigh[1]);
printf(" tz = %11.5f\n", fNhigh[2]);
TGeoTubeSeg::InspectShape();
}
//_____________________________________________________________________________
Double_t TGeoCtub::Safety(Double_t *point, Bool_t in) const
{
// computes the closest distance from given point to this shape, according
// to option. The matching point on the shape is stored in spoint.
Double_t saf[4];
Double_t rsq = point[0]*point[0]+point[1]*point[1];
Double_t r = TMath::Sqrt(rsq);
Bool_t isseg = kTRUE;
if (TMath::Abs(fPhi2-fPhi1-360.)<1E-8) isseg=kFALSE;
saf[0] = -point[0]*fNlow[0] - point[1]*fNlow[1] - (fDz+point[2])*fNlow[2];
saf[1] = -point[0]*fNhigh[0] - point[1]*fNhigh[1] + (fDz-point[2])*fNhigh[2];
saf[2] = (fRmin<1E-10 && !isseg)?TGeoShape::Big():(r-fRmin);
saf[3] = fRmax-r;
Double_t safphi = TGeoShape::Big();
Double_t safe = TGeoShape::Big();
if (isseg) safphi = TGeoShape::SafetyPhi(point, in, fPhi1, fPhi2);
if (in) {
safe = saf[TMath::LocMin(4,saf)];
return TMath::Min(safe, safphi);
}
for (Int_t i=0; i<4; i++) saf[i]=-saf[i];
safe = saf[TMath::LocMax(5,saf)];
if (isseg) return TMath::Max(safe, safphi);
return safe;
}
//_____________________________________________________________________________
void TGeoCtub::SetCtubDimensions(Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2,
Double_t lx, Double_t ly, Double_t lz, Double_t tx, Double_t ty, Double_t tz)
{
// set dimensions of a cut tube
SetTubsDimensions(rmin, rmax, dz, phi1, phi2);
fNlow[0] = lx;
fNlow[1] = ly;
fNlow[2] = lz;
fNhigh[0] = tx;
fNhigh[1] = ty;
fNhigh[2] = tz;
ComputeBBox();
}
//_____________________________________________________________________________
void TGeoCtub::SetDimensions(Double_t *param)
{
SetCtubDimensions(param[0], param[1], param[2], param[3], param[4], param[5],
param[6], param[7], param[8], param[9], param[10]);
ComputeBBox();
}
//_____________________________________________________________________________
void TGeoCtub::SetPoints(Double_t *buff) const
{
// create sphere mesh points
Double_t dz;
Int_t j, n;
Double_t phi, phi1, phi2, dphi;
phi1 = fPhi1;
phi2 = fPhi2;
if (phi2<phi1) phi2+=360.;
n = gGeoManager->GetNsegments()+1;
dphi = (phi2-phi1)/(n-1);
dz = fDz;
if (buff) {
Int_t indx = 0;
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmin * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmin * TMath::Sin(phi);
indx++;
buff[indx+6*n] = GetZcoord(buff[indx-2], buff[indx-1], dz);
buff[indx] = GetZcoord(buff[indx-2], buff[indx-1], -dz);
indx++;
}
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmax * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmax * TMath::Sin(phi);
indx++;
buff[indx+6*n]= GetZcoord(buff[indx-2], buff[indx-1], dz);
buff[indx] = GetZcoord(buff[indx-2], buff[indx-1], -dz);
indx++;
}
}
}
//_____________________________________________________________________________
void TGeoCtub::SetPoints(Float_t *buff) const
{
// create sphere mesh points
Double_t dz;
Int_t j, n;
Double_t phi, phi1, phi2, dphi;
phi1 = fPhi1;
phi2 = fPhi2;
if (phi2<phi1) phi2+=360.;
n = gGeoManager->GetNsegments()+1;
dphi = (phi2-phi1)/(n-1);
dz = fDz;
if (buff) {
Int_t indx = 0;
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmin * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmin * TMath::Sin(phi);
indx++;
buff[indx+6*n] = GetZcoord(buff[indx-2], buff[indx-1], dz);
buff[indx] = GetZcoord(buff[indx-2], buff[indx-1], -dz);
indx++;
}
for (j = 0; j < n; j++) {
phi = (phi1+j*dphi)*TMath::DegToRad();
buff[indx+6*n] = buff[indx] = fRmax * TMath::Cos(phi);
indx++;
buff[indx+6*n] = buff[indx] = fRmax * TMath::Sin(phi);
indx++;
buff[indx+6*n]= GetZcoord(buff[indx-2], buff[indx-1], dz);
buff[indx] = GetZcoord(buff[indx-2], buff[indx-1], -dz);
indx++;
}
}
}
//_____________________________________________________________________________
Int_t TGeoCtub::GetNmeshVertices() const
{
// Return number of vertices of the mesh representation
Int_t n = gGeoManager->GetNsegments()+1;
Int_t numPoints = n*4;
return numPoints;
}
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