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TGeoTrd1.cxx
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1// @(#)root/geom:$Id$
2// Author: Andrei Gheata 24/10/01
3// TGeoTrd1::Contains() and DistFromInside() implemented by Mihaela Gheata
4
5/*************************************************************************
6 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
7 * All rights reserved. *
8 * *
9 * For the licensing terms see $ROOTSYS/LICENSE. *
10 * For the list of contributors see $ROOTSYS/README/CREDITS. *
11 *************************************************************************/
12
13/** \class TGeoTrd1
14\ingroup Geometry_classes
15A trapezoid with only x length varying with z. It has 4
16parameters, the half length in x at the low z surface, that at the
17high z surface, the half length in y, and in z
18
19Begin_Macro
20{
21 TCanvas *c = new TCanvas("c", "c",0,0,600,600);
22 new TGeoManager("trd1", "poza8");
23 TGeoMaterial *mat = new TGeoMaterial("Al", 26.98,13,2.7);
24 TGeoMedium *med = new TGeoMedium("MED",1,mat);
25 TGeoVolume *top = gGeoManager->MakeBox("TOP",med,100,100,100);
26 gGeoManager->SetTopVolume(top);
27 TGeoVolume *vol = gGeoManager->MakeTrd1("Trd1",med, 10,20,30,40);
28 vol->SetLineWidth(2);
29 top->AddNode(vol,1);
30 gGeoManager->CloseGeometry();
31 gGeoManager->SetNsegments(80);
32 top->Draw();
33 TView *view = gPad->GetView();
34 view->ShowAxis();
35}
36End_Macro
37*/
38
39#include <iostream>
40
41#include "TGeoManager.h"
42#include "TGeoMatrix.h"
43#include "TGeoVolume.h"
44#include "TGeoTrd1.h"
45#include "TMath.h"
46
48
49////////////////////////////////////////////////////////////////////////////////
50/// dummy ctor
51
53{
54 fDz = fDx1 = fDx2 = fDy = 0;
56}
57
58////////////////////////////////////////////////////////////////////////////////
59/// constructor.
60
62 :TGeoBBox(0,0,0)
63{
65 fDx1 = dx1;
66 fDx2 = dx2;
67 fDy = dy;
68 fDz = dz;
69 if ((dx1<0) || (dx2<0) || (dy<0) || (dz<0)) {
71 printf("trd1 : dx1=%f, dx2=%f, dy=%f, dz=%f\n",
72 dx1,dx2,dy,dz);
73 }
74 else ComputeBBox();
75}
76
77////////////////////////////////////////////////////////////////////////////////
78/// constructor.
79
81 :TGeoBBox(name, 0,0,0)
82{
84 fDx1 = dx1;
85 fDx2 = dx2;
86 fDy = dy;
87 fDz = dz;
88 if ((dx1<0) || (dx2<0) || (dy<0) || (dz<0)) {
90 printf("trd1 : dx1=%f, dx2=%f, dy=%f, dz=%f\n",
91 dx1,dx2,dy,dz);
92 }
93 else ComputeBBox();
94}
95
96////////////////////////////////////////////////////////////////////////////////
97/// ctor with an array of parameters
98/// - param[0] = dx1
99/// - param[1] = dx2
100/// - param[2] = dy
101/// - param[3] = dz
102
104 :TGeoBBox(0,0,0)
105{
107 SetDimensions(param);
108 if ((fDx1<0) || (fDx2<0) || (fDy<=0) || (fDz<=0)) SetShapeBit(kGeoRunTimeShape);
109 else ComputeBBox();
110}
111
112////////////////////////////////////////////////////////////////////////////////
113/// destructor
114
116{
117}
118
119////////////////////////////////////////////////////////////////////////////////
120/// Computes capacity of the shape in [length^3]
121
123{
124 Double_t capacity = 4.*(fDx1+fDx2)*fDy*fDz;
125 return capacity;
126}
127
128////////////////////////////////////////////////////////////////////////////////
129/// compute bounding box for a trd1
130
132{
134 fDY = fDy;
135 fDZ = fDz;
136 memset(fOrigin, 0, 3*sizeof(Double_t));
137}
138
139////////////////////////////////////////////////////////////////////////////////
140/// Compute normal to closest surface from POINT.
141
142void TGeoTrd1::ComputeNormal(const Double_t *point, const Double_t *dir, Double_t *norm)
143{
144 Double_t safe, safemin;
145 //--- Compute safety first
146 Double_t fx = 0.5*(fDx1-fDx2)/fDz;
147 Double_t calf = 1./TMath::Sqrt(1.0+fx*fx);
148 // check Z facettes
149 safe = safemin = TMath::Abs(fDz-TMath::Abs(point[2]));
150 norm[0] = norm[1] = 0;
151 norm[2] = (dir[2]>=0)?1:-1;
152 if (safe<1E-6) return;
153 // check X facettes
154 Double_t distx = 0.5*(fDx1+fDx2)-fx*point[2];
155 if (distx>=0) {
156 safe=TMath::Abs(distx-TMath::Abs(point[0]))*calf;
157 if (safe<safemin) {
158 safemin = safe;
159 norm[0] = (point[0]>0)?calf:(-calf);
160 norm[1] = 0;
161 norm[2] = calf*fx;
162 Double_t dot = norm[0]*dir[0]+norm[1]*dir[1]+norm[2]*dir[2];
163 if (dot<0) {
164 norm[0] = -norm[0];
165 norm[2] = -norm[2];
166 }
167 if (safe<1E-6) return;
168 }
169 }
170 // check Y facettes
171 safe = TMath::Abs(fDy-TMath::Abs(point[1]));
172 if (safe<safemin) {
173 norm[0] = norm[2] = 0;
174 norm[1] = (dir[1]>=0)?1:-1;
175 }
176}
177
178////////////////////////////////////////////////////////////////////////////////
179/// test if point is inside this shape
180/// check Z range
181
183{
184 if (TMath::Abs(point[2]) > fDz) return kFALSE;
185 // then y
186 if (TMath::Abs(point[1]) > fDy) return kFALSE;
187 // then x
188 Double_t dx = 0.5*(fDx2*(point[2]+fDz)+fDx1*(fDz-point[2]))/fDz;
189 if (TMath::Abs(point[0]) > dx) return kFALSE;
190 return kTRUE;
191}
192
193////////////////////////////////////////////////////////////////////////////////
194/// Compute distance from inside point to surface of the trd1
195/// Boundary safe algorithm.
196
197Double_t TGeoTrd1::DistFromInside(const Double_t *point, const Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
198{
199 Double_t snxt = TGeoShape::Big();
200 if (iact<3 && safe) {
201 // compute safe distance
202 *safe = Safety(point, kTRUE);
203 if (iact==0) return TGeoShape::Big();
204 if (iact==1 && step<*safe) return TGeoShape::Big();
205 }
206
207 //--- Compute safety first
208 Double_t fx = 0.5*(fDx1-fDx2)/fDz;
209 Double_t cn;
210 Double_t distx = 0.5*(fDx1+fDx2)-fx*point[2];
211 //--- Compute distance to this shape
212 // first check if Z facettes are crossed
213 Double_t dist[3];
214 for (Int_t i=0; i<3; i++) dist[i]=TGeoShape::Big();
215 if (dir[2]<0) {
216 dist[0]=-(point[2]+fDz)/dir[2];
217 } else if (dir[2]>0) {
218 dist[0]=(fDz-point[2])/dir[2];
219 }
220 if (dist[0]<=0) return 0.0;
221 // now check X facettes
222 cn = -dir[0]+fx*dir[2];
223 if (cn>0) {
224 dist[1] = point[0]+distx;
225 if (dist[1]<=0) return 0.0;
226 dist[1] /= cn;
227 }
228 cn = dir[0]+fx*dir[2];
229 if (cn>0) {
230 Double_t s = distx-point[0];
231 if (s<=0) return 0.0;
232 s /= cn;
233 if (s<dist[1]) dist[1] = s;
234 }
235 // now check Y facettes
236 if (dir[1]<0) {
237 dist[2]=-(point[1]+fDy)/dir[1];
238 } else if (dir[1]>0) {
239 dist[2]=(fDy-point[1])/dir[1];
240 }
241 if (dist[2]<=0) return 0.0;
242 snxt = dist[TMath::LocMin(3,dist)];
243 return snxt;
244}
245
246////////////////////////////////////////////////////////////////////////////////
247/// get the most visible corner from outside point and the normals
248
249void TGeoTrd1::GetVisibleCorner(const Double_t *point, Double_t *vertex, Double_t *normals) const
250{
251 Double_t fx = 0.5*(fDx1-fDx2)/fDz;
252 Double_t calf = 1./TMath::Sqrt(1.0+fx*fx);
253 Double_t salf = calf*fx;
254 // check visibility of X faces
255 Double_t distx = 0.5*(fDx1+fDx2)-fx*point[2];
256 memset(normals, 0, 9*sizeof(Double_t));
257 TGeoTrd1 *trd1 = (TGeoTrd1*)this;
258 if (point[0]>distx) {
259 // hi x face visible
260 trd1->SetShapeBit(kGeoVisX);
261 normals[0]=calf;
262 normals[2]=salf;
263 } else {
265 normals[0]=-calf;
266 normals[2]=salf;
267 }
268 if (point[1]>fDy) {
269 // hi y face visible
270 trd1->SetShapeBit(kGeoVisY);
271 normals[4]=1;
272 } else {
274 normals[4]=-1;
275 }
276 if (point[2]>fDz) {
277 // hi z face visible
278 trd1->SetShapeBit(kGeoVisZ);
279 normals[8]=1;
280 } else {
282 normals[8]=-1;
283 }
285}
286
287////////////////////////////////////////////////////////////////////////////////
288/// get the opposite corner of the intersected face
289
290void TGeoTrd1::GetOppositeCorner(const Double_t * /*point*/, Int_t inorm, Double_t *vertex, Double_t *normals) const
291{
292 TGeoTrd1 *trd1 = (TGeoTrd1*)this;
293 if (inorm != 0) {
294 // change x face
296 normals[0]=-normals[0];
297 }
298 if (inorm != 1) {
299 // change y face
301 normals[4]=-normals[4];
302 }
303 if (inorm != 2) {
304 // hi z face visible
306 normals[8]=-normals[8];
307 }
309}
310
311////////////////////////////////////////////////////////////////////////////////
312/// Compute distance from outside point to surface of the trd1
313/// Boundary safe algorithm
314
315Double_t TGeoTrd1::DistFromOutside(const Double_t *point, const Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const
316{
317 Double_t snxt = TGeoShape::Big();
318 if (iact<3 && safe) {
319 // compute safe distance
320 *safe = Safety(point, kFALSE);
321 if (iact==0) return TGeoShape::Big();
322 if (iact==1 && step<*safe) return TGeoShape::Big();
323 }
324 // find a visible face
325 Double_t xnew,ynew,znew;
326 Double_t fx = 0.5*(fDx1-fDx2)/fDz;
327 Double_t cn;
328 Double_t distx = 0.5*(fDx1+fDx2)-fx*point[2];
329 Bool_t in = kTRUE;
330 Double_t safx = distx-TMath::Abs(point[0]);
331 Double_t safy = fDy-TMath::Abs(point[1]);
332 Double_t safz = fDz-TMath::Abs(point[2]);
333
334 //--- Compute distance to this shape
335 // first check if Z facettes are crossed
336 if (point[2]<=-fDz) {
337 if (dir[2]<=0) return TGeoShape::Big();
338 in = kFALSE;
339 snxt = -(fDz+point[2])/dir[2];
340 // find extrapolated X and Y
341 xnew = point[0]+snxt*dir[0];
342 if (TMath::Abs(xnew) <= fDx1) {
343 ynew = point[1]+snxt*dir[1];
344 if (TMath::Abs(ynew) <= fDy) return snxt;
345 }
346 } else if (point[2]>=fDz) {
347 if (dir[2]>=0) return TGeoShape::Big();
348 in = kFALSE;
349 snxt = (fDz-point[2])/dir[2];
350 // find extrapolated X and Y
351 xnew = point[0]+snxt*dir[0];
352 if (TMath::Abs(xnew) <= fDx2) {
353 ynew = point[1]+snxt*dir[1];
354 if (TMath::Abs(ynew) <= fDy) return snxt;
355 }
356 }
357 // check if X facettes are crossed
358 if (point[0]<=-distx) {
359 cn = -dir[0]+fx*dir[2];
360 if (cn>=0) return TGeoShape::Big();
361 in = kFALSE;
362 snxt = (point[0]+distx)/cn;
363 // find extrapolated Y and Z
364 ynew = point[1]+snxt*dir[1];
365 if (TMath::Abs(ynew) <= fDy) {
366 znew = point[2]+snxt*dir[2];
367 if (TMath::Abs(znew) <= fDz) return snxt;
368 }
369 }
370 if (point[0]>=distx) {
371 cn = dir[0]+fx*dir[2];
372 if (cn>=0) return TGeoShape::Big();
373 in = kFALSE;
374 snxt = (distx-point[0])/cn;
375 // find extrapolated Y and Z
376 ynew = point[1]+snxt*dir[1];
377 if (TMath::Abs(ynew) < fDy) {
378 znew = point[2]+snxt*dir[2];
379 if (TMath::Abs(znew) < fDz) return snxt;
380 }
381 }
382 // finally check Y facettes
383 if (point[1]<=-fDy) {
384 cn = -dir[1];
385 if (cn>=0) return TGeoShape::Big();
386 in = kFALSE;
387 snxt = (point[1]+fDy)/cn;
388 // find extrapolated X and Z
389 znew = point[2]+snxt*dir[2];
390 if (TMath::Abs(znew) < fDz) {
391 xnew = point[0]+snxt*dir[0];
392 Double_t dx = 0.5*(fDx1+fDx2)-fx*znew;
393 if (TMath::Abs(xnew) < dx) return snxt;
394 }
395 } else if (point[1]>=fDy) {
396 cn = dir[1];
397 if (cn>=0) return TGeoShape::Big();
398 in = kFALSE;
399 snxt = (fDy-point[1])/cn;
400 // find extrapolated X and Z
401 znew = point[2]+snxt*dir[2];
402 if (TMath::Abs(znew) < fDz) {
403 xnew = point[0]+snxt*dir[0];
404 Double_t dx = 0.5*(fDx1+fDx2)-fx*znew;
405 if (TMath::Abs(xnew) < dx) return snxt;
406 }
407 }
408 if (!in) return TGeoShape::Big();
409 // Point actually inside
410 if (safz<safx && safz<safy) {
411 if (point[2]*dir[2]>=0) return TGeoShape::Big();
412 return 0.0;
413 }
414 if (safy<safx) {
415 if (point[1]*dir[1]>=0) return TGeoShape::Big();
416 return 0.0;
417 }
418 cn = TMath::Sign(1.0,point[0])*dir[0]+fx*dir[2];
419 if (cn>=0) return TGeoShape::Big();
420 return 0.0;
421}
422
423////////////////////////////////////////////////////////////////////////////////
424/// Divide this trd1 shape belonging to volume "voldiv" into ndiv volumes
425/// called divname, from start position with the given step. Returns pointer
426/// to created division cell volume in case of Y divisions. For Z divisions just
427/// return the pointer to the volume to be divided. In case a wrong
428/// division axis is supplied, returns pointer to volume that was divided.
429
430TGeoVolume *TGeoTrd1::Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv,
431 Double_t start, Double_t step)
432{
433 TGeoShape *shape; //--- shape to be created
434 TGeoVolume *vol; //--- division volume to be created
435 TGeoVolumeMulti *vmulti; //--- generic divided volume
436 TGeoPatternFinder *finder; //--- finder to be attached
437 TString opt = ""; //--- option to be attached
438 Double_t zmin, zmax, dx1n, dx2n;
439 Int_t id;
440 Double_t end = start+ndiv*step;
441 switch (iaxis) {
442 case 1:
443 Warning("Divide", "dividing a Trd1 on X not implemented");
444 return 0;
445 case 2:
446 finder = new TGeoPatternY(voldiv, ndiv, start, end);
447 voldiv->SetFinder(finder);
448 finder->SetDivIndex(voldiv->GetNdaughters());
449 shape = new TGeoTrd1(fDx1, fDx2, step/2, fDz);
450 vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
451 vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
452 vmulti->AddVolume(vol);
453 opt = "Y";
454 for (id=0; id<ndiv; id++) {
455 voldiv->AddNodeOffset(vol, id, start+step/2+id*step, opt.Data());
456 ((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
457 }
458 return vmulti;
459 case 3:
460 finder = new TGeoPatternZ(voldiv, ndiv, start, end);
461 voldiv->SetFinder(finder);
462 finder->SetDivIndex(voldiv->GetNdaughters());
463 vmulti = gGeoManager->MakeVolumeMulti(divname, voldiv->GetMedium());
464 for (id=0; id<ndiv; id++) {
465 zmin = start+id*step;
466 zmax = start+(id+1)*step;
467 dx1n = 0.5*(fDx1*(fDz-zmin)+fDx2*(fDz+zmin))/fDz;
468 dx2n = 0.5*(fDx1*(fDz-zmax)+fDx2*(fDz+zmax))/fDz;
469 shape = new TGeoTrd1(dx1n, dx2n, fDy, step/2.);
470 vol = new TGeoVolume(divname, shape, voldiv->GetMedium());
471 vmulti->AddVolume(vol);
472 opt = "Z";
473 voldiv->AddNodeOffset(vol, id, start+step/2+id*step, opt.Data());
474 ((TGeoNodeOffset*)voldiv->GetNodes()->At(voldiv->GetNdaughters()-1))->SetFinder(finder);
475 }
476 return vmulti;
477 default:
478 Error("Divide", "Wrong axis type for division");
479 return 0;
480 }
481}
482
483////////////////////////////////////////////////////////////////////////////////
484/// Get range of shape for a given axis.
485
487{
488 xlo = 0;
489 xhi = 0;
490 Double_t dx = 0;
491 switch (iaxis) {
492 case 2:
493 xlo = -fDy;
494 xhi = fDy;
495 dx = xhi-xlo;
496 return dx;
497 case 3:
498 xlo = -fDz;
499 xhi = fDz;
500 dx = xhi-xlo;
501 return dx;
502 }
503 return dx;
504}
505
506////////////////////////////////////////////////////////////////////////////////
507/// Fill vector param[4] with the bounding cylinder parameters. The order
508/// is the following : Rmin, Rmax, Phi1, Phi2
509
511{
513}
514
515////////////////////////////////////////////////////////////////////////////////
516/// Fills real parameters of a positioned box inside this. Returns 0 if successful.
517
518Int_t TGeoTrd1::GetFittingBox(const TGeoBBox *parambox, TGeoMatrix *mat, Double_t &dx, Double_t &dy, Double_t &dz) const
519{
520 dx=dy=dz=0;
521 if (mat->IsRotation()) {
522 Error("GetFittingBox", "cannot handle parametrized rotated volumes");
523 return 1; // ### rotation not accepted ###
524 }
525 //--> translate the origin of the parametrized box to the frame of this box.
526 Double_t origin[3];
527 mat->LocalToMaster(parambox->GetOrigin(), origin);
528 if (!Contains(origin)) {
529 Error("GetFittingBox", "wrong matrix - parametrized box is outside this");
530 return 1; // ### wrong matrix ###
531 }
532 //--> now we have to get the valid range for all parametrized axis
533 Double_t dd[3];
534 dd[0] = parambox->GetDX();
535 dd[1] = parambox->GetDY();
536 dd[2] = parambox->GetDZ();
537 //-> check if Z range is fixed
538 if (dd[2]<0) {
539 dd[2] = TMath::Min(origin[2]+fDz, fDz-origin[2]);
540 if (dd[2]<0) {
541 Error("GetFittingBox", "wrong matrix");
542 return 1;
543 }
544 }
545 //-> check if Y range is fixed
546 if (dd[1]<0) {
547 dd[1] = TMath::Min(origin[1]+fDy, fDy-origin[1]);
548 if (dd[1]<0) {
549 Error("GetFittingBox", "wrong matrix");
550 return 1;
551 }
552 }
553 if (dd[0]>=0) {
554 dx = dd[0];
555 dy = dd[1];
556 dz = dd[2];
557 return 0;
558 }
559 //-> check now range at Z = origin[2] +/- dd[2]
560 Double_t fx = 0.5*(fDx1-fDx2)/fDz;
561 Double_t dx0 = 0.5*(fDx1+fDx2);
562 Double_t z=origin[2]-dd[2];
563 dd[0] = dx0-fx*z-origin[0];
564 z=origin[2]+dd[2];
565 dd[0] = TMath::Min(dd[0], dx0-fx*z-origin[0]);
566 if (dd[0]<0) {
567 Error("GetFittingBox", "wrong matrix");
568 return 1;
569 }
570 dx = dd[0];
571 dy = dd[1];
572 dz = dd[2];
573 return 0;
574}
575
576////////////////////////////////////////////////////////////////////////////////
577/// in case shape has some negative parameters, these has to be computed
578/// in order to fit the mother
579
581{
582 if (!TestShapeBit(kGeoRunTimeShape)) return 0;
583 if (!mother->TestShapeBit(kGeoTrd1)) {
584 Error("GetMakeRuntimeShape", "invalid mother");
585 return 0;
586 }
587 Double_t dx1, dx2, dy, dz;
588 if (fDx1<0) dx1=((TGeoTrd1*)mother)->GetDx1();
589 else dx1=fDx1;
590 if (fDx2<0) dx2=((TGeoTrd1*)mother)->GetDx2();
591 else dx2=fDx2;
592 if (fDy<0) dy=((TGeoTrd1*)mother)->GetDy();
593 else dy=fDy;
594 if (fDz<0) dz=((TGeoTrd1*)mother)->GetDz();
595 else dz=fDz;
596
597 return (new TGeoTrd1(dx1, dx2, dy, dz));
598}
599
600////////////////////////////////////////////////////////////////////////////////
601/// print shape parameters
602
604{
605 printf("*** Shape %s: TGeoTrd1 ***\n", GetName());
606 printf(" dx1 = %11.5f\n", fDx1);
607 printf(" dx2 = %11.5f\n", fDx2);
608 printf(" dy = %11.5f\n", fDy);
609 printf(" dz = %11.5f\n", fDz);
610 printf(" Bounding box:\n");
612}
613
614////////////////////////////////////////////////////////////////////////////////
615/// computes the closest distance from given point to this shape, according
616/// to option. The matching point on the shape is stored in spoint.
617
619{
620 Double_t saf[3];
621 //--- Compute safety first
622 // check Z facettes
623 saf[0] = fDz-TMath::Abs(point[2]);
624 Double_t fx = 0.5*(fDx1-fDx2)/fDz;
625 Double_t calf = 1./TMath::Sqrt(1.0+fx*fx);
626 // check X facettes
627 Double_t distx = 0.5*(fDx1+fDx2)-fx*point[2];
628 if (distx<0) saf[1]=TGeoShape::Big();
629 else saf[1]=(distx-TMath::Abs(point[0]))*calf;
630 // check Y facettes
631 saf[2] = fDy-TMath::Abs(point[1]);
632 if (in) return saf[TMath::LocMin(3,saf)];
633 for (Int_t i=0; i<3; i++) saf[i]=-saf[i];
634 return saf[TMath::LocMax(3,saf)];
635}
636
637////////////////////////////////////////////////////////////////////////////////
638/// Save a primitive as a C++ statement(s) on output stream "out".
639
640void TGeoTrd1::SavePrimitive(std::ostream &out, Option_t * /*option*/ /*= ""*/)
641{
643 out << " // Shape: " << GetName() << " type: " << ClassName() << std::endl;
644 out << " dx1 = " << fDx1 << ";" << std::endl;
645 out << " dx2 = " << fDx2 << ";" << std::endl;
646 out << " dy = " << fDy << ";" << std::endl;
647 out << " dz = " << fDZ << ";" << std::endl;
648 out << " TGeoShape *" << GetPointerName() << " = new TGeoTrd1(\"" << GetName() << "\", dx1,dx2,dy,dz);" << std::endl;
650}
651
652////////////////////////////////////////////////////////////////////////////////
653/// set trd1 params in one step :
654
656{
657 fDx1 = param[0];
658 fDx2 = param[1];
659 fDy = param[2];
660 fDz = param[3];
661 ComputeBBox();
662}
663
664////////////////////////////////////////////////////////////////////////////////
665/// set vertex of a corner according to visibility flags
666
668{
669 if (TestShapeBit(kGeoVisX)) {
670 if (TestShapeBit(kGeoVisZ)) {
671 vertex[0] = fDx2;
672 vertex[2] = fDz;
674 } else {
675 vertex[0] = fDx1;
676 vertex[2] = -fDz;
678 }
679 } else {
680 if (TestShapeBit(kGeoVisZ)) {
681 vertex[0] = -fDx2;
682 vertex[2] = fDz;
684 } else {
685 vertex[0] = -fDx1;
686 vertex[2] = -fDz;
688 }
689 }
690}
691
692////////////////////////////////////////////////////////////////////////////////
693/// create arb8 mesh points
694
696{
697 if (!points) return;
698 points[ 0] = -fDx1; points[ 1] = -fDy; points[ 2] = -fDz;
699 points[ 3] = -fDx1; points[ 4] = fDy; points[ 5] = -fDz;
700 points[ 6] = fDx1; points[ 7] = fDy; points[ 8] = -fDz;
701 points[ 9] = fDx1; points[10] = -fDy; points[11] = -fDz;
702 points[12] = -fDx2; points[13] = -fDy; points[14] = fDz;
703 points[15] = -fDx2; points[16] = fDy; points[17] = fDz;
704 points[18] = fDx2; points[19] = fDy; points[20] = fDz;
705 points[21] = fDx2; points[22] = -fDy; points[23] = fDz;
706}
707
708////////////////////////////////////////////////////////////////////////////////
709/// create arb8 mesh points
710
712{
713 if (!points) return;
714 points[ 0] = -fDx1; points[ 1] = -fDy; points[ 2] = -fDz;
715 points[ 3] = -fDx1; points[ 4] = fDy; points[ 5] = -fDz;
716 points[ 6] = fDx1; points[ 7] = fDy; points[ 8] = -fDz;
717 points[ 9] = fDx1; points[10] = -fDy; points[11] = -fDz;
718 points[12] = -fDx2; points[13] = -fDy; points[14] = fDz;
719 points[15] = -fDx2; points[16] = fDy; points[17] = fDz;
720 points[18] = fDx2; points[19] = fDy; points[20] = fDz;
721 points[21] = fDx2; points[22] = -fDy; points[23] = fDz;
722}
723
724////////////////////////////////////////////////////////////////////////////////
725/// fill size of this 3-D object
726
728{
730}
731
732////////////////////////////////////////////////////////////////////////////////
733/// Check the inside status for each of the points in the array.
734/// Input: Array of point coordinates + vector size
735/// Output: Array of Booleans for the inside of each point
736
737void TGeoTrd1::Contains_v(const Double_t *points, Bool_t *inside, Int_t vecsize) const
738{
739 for (Int_t i=0; i<vecsize; i++) inside[i] = Contains(&points[3*i]);
740}
741
742////////////////////////////////////////////////////////////////////////////////
743/// Compute the normal for an array o points so that norm.dot.dir is positive
744/// Input: Arrays of point coordinates and directions + vector size
745/// Output: Array of normal directions
746
747void TGeoTrd1::ComputeNormal_v(const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize)
748{
749 for (Int_t i=0; i<vecsize; i++) ComputeNormal(&points[3*i], &dirs[3*i], &norms[3*i]);
750}
751
752////////////////////////////////////////////////////////////////////////////////
753/// Compute distance from array of input points having directions specified by dirs. Store output in dists
754
755void TGeoTrd1::DistFromInside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t* step) const
756{
757 for (Int_t i=0; i<vecsize; i++) dists[i] = DistFromInside(&points[3*i], &dirs[3*i], 3, step[i]);
758}
759
760////////////////////////////////////////////////////////////////////////////////
761/// Compute distance from array of input points having directions specified by dirs. Store output in dists
762
763void TGeoTrd1::DistFromOutside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t* step) const
764{
765 for (Int_t i=0; i<vecsize; i++) dists[i] = DistFromOutside(&points[3*i], &dirs[3*i], 3, step[i]);
766}
767
768////////////////////////////////////////////////////////////////////////////////
769/// Compute safe distance from each of the points in the input array.
770/// Input: Array of point coordinates, array of statuses for these points, size of the arrays
771/// Output: Safety values
772
773void TGeoTrd1::Safety_v(const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const
774{
775 for (Int_t i=0; i<vecsize; i++) safe[i] = Safety(&points[3*i], inside[i]);
776}
const Bool_t kFALSE
Definition RtypesCore.h:92
double Double_t
Definition RtypesCore.h:59
float Float_t
Definition RtypesCore.h:57
const Bool_t kTRUE
Definition RtypesCore.h:91
const char Option_t
Definition RtypesCore.h:66
#define ClassImp(name)
Definition Rtypes.h:364
XFontStruct * id
Definition TGX11.cxx:109
char name[80]
Definition TGX11.cxx:110
R__EXTERN TGeoManager * gGeoManager
point * points
Definition X3DBuffer.c:22
Box class.
Definition TGeoBBox.h:18
virtual const Double_t * GetOrigin() const
Definition TGeoBBox.h:73
Double_t fDX
Definition TGeoBBox.h:21
virtual void InspectShape() const
Prints shape parameters.
Definition TGeoBBox.cxx:792
virtual Double_t GetDX() const
Definition TGeoBBox.h:70
virtual Double_t GetDZ() const
Definition TGeoBBox.h:72
virtual void Sizeof3D() const
Definition TGeoBBox.cxx:995
virtual Double_t GetDY() const
Definition TGeoBBox.h:71
Double_t fOrigin[3]
Definition TGeoBBox.h:24
Double_t fDY
Definition TGeoBBox.h:22
Double_t fDZ
Definition TGeoBBox.h:23
virtual void GetBoundingCylinder(Double_t *param) const
Fill vector param[4] with the bounding cylinder parameters.
Definition TGeoBBox.cxx:582
TGeoVolumeMulti * MakeVolumeMulti(const char *name, TGeoMedium *medium)
Make a TGeoVolumeMulti handling a list of volumes.
Geometrical transformation package.
Definition TGeoMatrix.h:41
Bool_t IsRotation() const
Definition TGeoMatrix.h:68
virtual void LocalToMaster(const Double_t *local, Double_t *master) const
convert a point by multiplying its column vector (x, y, z, 1) to matrix inverse
Node containing an offset.
Definition TGeoNode.h:184
Base finder class for patterns.
void SetDivIndex(Int_t index)
Base abstract class for all shapes.
Definition TGeoShape.h:26
static Double_t Big()
Definition TGeoShape.h:88
void SetShapeBit(UInt_t f, Bool_t set)
Equivalent of TObject::SetBit.
const char * GetPointerName() const
Provide a pointer name containing uid.
virtual const char * GetName() const
Get the shape name.
@ kGeoSavePrimitive
Definition TGeoShape.h:65
@ kGeoRunTimeShape
Definition TGeoShape.h:41
Bool_t TestShapeBit(UInt_t f) const
Definition TGeoShape.h:163
A trapezoid with only x length varying with z.
Definition TGeoTrd1.h:18
virtual void Sizeof3D() const
fill size of this 3-D object
Definition TGeoTrd1.cxx:727
virtual void ComputeBBox()
compute bounding box for a trd1
Definition TGeoTrd1.cxx:131
virtual void DistFromOutside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const
Compute distance from array of input points having directions specified by dirs. Store output in dist...
Definition TGeoTrd1.cxx:763
virtual void InspectShape() const
print shape parameters
Definition TGeoTrd1.cxx:603
virtual void GetBoundingCylinder(Double_t *param) const
Fill vector param[4] with the bounding cylinder parameters.
Definition TGeoTrd1.cxx:510
virtual Double_t Safety(const Double_t *point, Bool_t in=kTRUE) const
computes the closest distance from given point to this shape, according to option.
Definition TGeoTrd1.cxx:618
virtual void ComputeNormal_v(const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize)
Compute the normal for an array o points so that norm.dot.dir is positive Input: Arrays of point coor...
Definition TGeoTrd1.cxx:747
virtual Bool_t Contains(const Double_t *point) const
test if point is inside this shape check Z range
Definition TGeoTrd1.cxx:182
virtual void DistFromInside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const
Compute distance from array of input points having directions specified by dirs. Store output in dist...
Definition TGeoTrd1.cxx:755
virtual void Contains_v(const Double_t *points, Bool_t *inside, Int_t vecsize) const
Check the inside status for each of the points in the array.
Definition TGeoTrd1.cxx:737
virtual ~TGeoTrd1()
destructor
Definition TGeoTrd1.cxx:115
void SetVertex(Double_t *vertex) const
set vertex of a corner according to visibility flags
Definition TGeoTrd1.cxx:667
virtual TGeoShape * GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix *mat) const
in case shape has some negative parameters, these has to be computed in order to fit the mother
Definition TGeoTrd1.cxx:580
void GetOppositeCorner(const Double_t *point, Int_t inorm, Double_t *vertex, Double_t *normals) const
get the opposite corner of the intersected face
Definition TGeoTrd1.cxx:290
virtual Double_t DistFromInside(const Double_t *point, const Double_t *dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=0) const
Compute distance from inside point to surface of the trd1 Boundary safe algorithm.
Definition TGeoTrd1.cxx:197
void GetVisibleCorner(const Double_t *point, Double_t *vertex, Double_t *normals) const
get the most visible corner from outside point and the normals
Definition TGeoTrd1.cxx:249
virtual void Safety_v(const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const
Compute safe distance from each of the points in the input array.
Definition TGeoTrd1.cxx:773
virtual Double_t GetAxisRange(Int_t iaxis, Double_t &xlo, Double_t &xhi) const
Get range of shape for a given axis.
Definition TGeoTrd1.cxx:486
Double_t fDz
Definition TGeoTrd1.h:24
virtual TGeoVolume * Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
Divide this trd1 shape belonging to volume "voldiv" into ndiv volumes called divname,...
Definition TGeoTrd1.cxx:430
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Save a primitive as a C++ statement(s) on output stream "out".
Definition TGeoTrd1.cxx:640
TGeoTrd1()
dummy ctor
Definition TGeoTrd1.cxx:52
Double_t fDx1
Definition TGeoTrd1.h:21
virtual void SetDimensions(Double_t *param)
set trd1 params in one step :
Definition TGeoTrd1.cxx:655
virtual Int_t GetFittingBox(const TGeoBBox *parambox, TGeoMatrix *mat, Double_t &dx, Double_t &dy, Double_t &dz) const
Fills real parameters of a positioned box inside this. Returns 0 if successful.
Definition TGeoTrd1.cxx:518
virtual Double_t DistFromOutside(const Double_t *point, const Double_t *dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=0) const
Compute distance from outside point to surface of the trd1 Boundary safe algorithm.
Definition TGeoTrd1.cxx:315
virtual Double_t Capacity() const
Computes capacity of the shape in [length^3].
Definition TGeoTrd1.cxx:122
Double_t fDy
Definition TGeoTrd1.h:23
virtual void SetPoints(Double_t *points) const
create arb8 mesh points
Definition TGeoTrd1.cxx:695
virtual void ComputeNormal(const Double_t *point, const Double_t *dir, Double_t *norm)
Compute normal to closest surface from POINT.
Definition TGeoTrd1.cxx:142
Double_t fDx2
Definition TGeoTrd1.h:22
Volume families.
Definition TGeoVolume.h:255
void AddVolume(TGeoVolume *vol)
Add a volume with valid shape to the list of volumes.
TGeoVolume, TGeoVolumeMulti, TGeoVolumeAssembly are the volume classes.
Definition TGeoVolume.h:49
void AddNodeOffset(TGeoVolume *vol, Int_t copy_no, Double_t offset=0, Option_t *option="")
Add a division node to the list of nodes.
TGeoMedium * GetMedium() const
Definition TGeoVolume.h:174
void SetFinder(TGeoPatternFinder *finder)
Definition TGeoVolume.h:232
Int_t GetNdaughters() const
Definition TGeoVolume.h:351
TObjArray * GetNodes()
Definition TGeoVolume.h:168
TObject * At(Int_t idx) const
Definition TObjArray.h:166
R__ALWAYS_INLINE Bool_t TestBit(UInt_t f) const
Definition TObject.h:187
virtual const char * ClassName() const
Returns name of class to which the object belongs.
Definition TObject.cxx:130
virtual void Warning(const char *method, const char *msgfmt,...) const
Issue warning message.
Definition TObject.cxx:879
void SetBit(UInt_t f, Bool_t set)
Set or unset the user status bits as specified in f.
Definition TObject.cxx:696
virtual void Error(const char *method, const char *msgfmt,...) const
Issue error message.
Definition TObject.cxx:893
Basic string class.
Definition TString.h:136
const char * Data() const
Definition TString.h:369
Long64_t LocMin(Long64_t n, const T *a)
Return index of array with the minimum element.
Definition TMath.h:972
Short_t Max(Short_t a, Short_t b)
Definition TMathBase.h:212
T1 Sign(T1 a, T2 b)
Definition TMathBase.h:165
Long64_t LocMax(Long64_t n, const T *a)
Return index of array with the maximum element.
Definition TMath.h:1000
Double_t Sqrt(Double_t x)
Definition TMath.h:691
Short_t Min(Short_t a, Short_t b)
Definition TMathBase.h:180
Short_t Abs(Short_t d)
Definition TMathBase.h:120
REAL * vertex
Definition triangle.c:512