Geant4 11.1.1
Toolkit for the simulation of the passage of particles through matter
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SoCons.cc
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28//
29/*-----------------------------HEPVis---------------------------------------*/
30/* */
31/* Node: SoCons */
32/* Description: Represents the G4Cons Geant Geometry entity */
33/* Author: Joe Boudreau Nov 11 1996 */
34/* */
35/*--------------------------------------------------------------------------*/
36
37// this :
38#include "HEPVis/nodes/SoCons.h"
39
40#include <assert.h>
41#include <cmath>
42#include <Inventor/SbBox.h>
43#include <Inventor/actions/SoAction.h>
44#include <Inventor/fields/SoSFFloat.h>
45#include <Inventor/misc/SoChildList.h>
46#include <Inventor/nodes/SoSeparator.h>
47#include <Inventor/nodes/SoIndexedFaceSet.h>
48#include <Inventor/nodes/SoNormal.h>
49#include <Inventor/nodes/SoCoordinate3.h>
50#include <Inventor/nodes/SoNormalBinding.h>
51#include <Inventor/SoPrimitiveVertex.h>
52#include <Inventor/elements/SoTextureCoordinateElement.h>
53
54#include "HEPVis/SbMath.h"
55
56// This statement is required
57SO_NODE_SOURCE(SoCons)
58
59// Constructor
60SoCons::SoCons() {
61 // This statement is required
62 SO_NODE_CONSTRUCTOR(SoCons);
63
64 // Data fields are initialized like this:
65 SO_NODE_ADD_FIELD(fRmin1, (0.0));
66 SO_NODE_ADD_FIELD(fRmin2, (0.0));
67 SO_NODE_ADD_FIELD(fRmax1, (1.0));
68 SO_NODE_ADD_FIELD(fRmax2, (1.0));
69 SO_NODE_ADD_FIELD(fDz, (10.0));
70 SO_NODE_ADD_FIELD(fSPhi, (0.0));
71 SO_NODE_ADD_FIELD(fDPhi, ((float)(2*M_PI)));
72 SO_NODE_ADD_FIELD(smoothDraw, (TRUE));
73 SO_NODE_ADD_FIELD(alternateRep, (NULL));
74 children = new SoChildList(this);
75}
76
77// Destructor
78SoCons::~SoCons() {
79 delete children;
80}
81
82
83// initClass
84void SoCons::initClass(){
85 // This statement is required.
86 static bool first = true;
87 if (first) {
88 first = false;
89 SO_NODE_INIT_CLASS(SoCons,SoShape,"Shape");
90 }
91}
92
93
94// generatePrimitives
95void SoCons::generatePrimitives(SoAction *action) {
96 // This variable is used to store each vertex
97 SoPrimitiveVertex pv;
98
99 // Access the stat from the action
100 SoState *state = action->getState();
101
102 // See if we have to use a texture coordinate function,
103 // rather than generating explicit texture coordinates.
104 SbBool useTexFunction=
105 (SoTextureCoordinateElement::getType(state) ==
106 SoTextureCoordinateElement::FUNCTION);
107
108 // If we need to generate texture coordinates with a function,
109 // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll
110 // set up the coordinates directly.
111 const SoTextureCoordinateElement *tce = NULL;
112 SbVec4f texCoord;
113 if (useTexFunction) {
114 tce = SoTextureCoordinateElement::getInstance(state);
115 } else {
116 texCoord[2] = 0.0;
117 texCoord[3] = 1.0;
118 }
119 SbVec3f point, normal;
120
121 ///////////////////////////////////////////////////////
122 //-----------------------------------------------------
123#define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \
124 point.setValue((float)(x),(float)(y),(float)(z)); \
125 normal.setValue((float)(nx),(float)(ny),(float)(nz)); \
126 if (useTexFunction) { \
127 texCoord=tce->get(point,normal); \
128 } else { \
129 texCoord[0]=(float)(s); \
130 texCoord[1]=(float)(t); \
131 } \
132 pv.setPoint(point); \
133 pv.setNormal(normal); \
134 pv.setTextureCoords(texCoord); \
135 shapeVertex(&pv);
136 //-----------------------------------------------------
137 ///////////////////////////////////////////////////////
138
139
140 int NPHI = (int)(2+22*std::fabs(fDPhi.getValue()/(2.0*M_PI)));
141 double deltaPhi = fDPhi.getValue()/NPHI;
142 double phi0 = fSPhi.getValue();
143 double phi1 = phi0 + fDPhi.getValue();
144 double rMax1 = fRmax1.getValue();
145 double rMin1 = fRmin1.getValue();
146 double rMax2 = fRmax2.getValue();
147 double rMin2 = fRmin2.getValue();
148 double zMax = fDz.getValue();
149 double zMin = -zMax;
150 double cosPhi0 = std::cos(phi0);
151 double sinPhi0 = std::sin(phi0);
152 double cosPhi1 = std::cos(phi1);
153 double sinPhi1 = std::sin(phi1);
154 double cosDeltaPhi = std::cos(deltaPhi);
155 double sinDeltaPhi = std::sin(deltaPhi);
156 //
157 // The outer surface!
158 //
159 beginShape(action,TRIANGLE_STRIP);
160 int i;
161 double sinPhi=sinPhi0;
162 double cosPhi=cosPhi0;
163 for (i = 0; i<=NPHI; i++) {
164 GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi,zMax,0.0,0.0,cosPhi,sinPhi,0);
165 GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi,zMin,1.0,1.0,cosPhi,sinPhi,0);
166 inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi);
167 }
168 endShape();
169 //
170 // The inner surface!
171 //
172 beginShape(action,TRIANGLE_STRIP);
173 sinPhi=sinPhi0;
174 cosPhi=cosPhi0;
175 for (i = 0; i<=NPHI; i++) {
176 GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi,zMax,0.0,0.0,-cosPhi,-sinPhi,0);
177 GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi,zMin,1.0,1.0,-cosPhi,-sinPhi,0);
178 inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi);
179 }
180 endShape();
181 if (std::fabs(deltaPhi)<2.0*M_PI) {
182 //
183 // The end
184 //
185 beginShape(action,TRIANGLE_STRIP);
186 sinPhi=sinPhi0;
187 cosPhi=cosPhi0;
188 GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi,zMax,0.0,0.0,sinPhi,-cosPhi,0);
189 GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi,zMin,1.0,1.0,sinPhi,-cosPhi,0);
190 GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi,zMax,1.0,0.0,sinPhi,-cosPhi,0);
191 GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi,zMin,0.0,1.0,sinPhi,-cosPhi,0);
192 endShape();
193 //
194 // The other end
195 //
196 beginShape(action,TRIANGLE_STRIP);
197 sinPhi=sinPhi1;
198 cosPhi=cosPhi1;
199 GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi, zMax,0.0,0.0,-sinPhi,+cosPhi,0);
200 GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi, zMin,1.0,1.0,-sinPhi,+cosPhi,0);
201 GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi, zMax,1.0,0.0,-sinPhi,+cosPhi,0);
202 GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi, zMin,0.0,1.0,-sinPhi,+cosPhi,0);
203 endShape();
204 }
205
206 //
207 // The outer surface at z=+PDZ
208 //
209 beginShape(action,TRIANGLE_STRIP);
210 sinPhi=sinPhi0;
211 cosPhi=cosPhi0;
212 for (i = 0; i<=NPHI; i++) {
213 GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi,zMax,0.0,0.0,0,0,1);
214 GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi,zMax,1.0,1.0,0,0,1);
215 inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi);
216 }
217 endShape();
218 //
219 // The outer surface at z=-PDZ
220 //
221 beginShape(action,TRIANGLE_STRIP);
222 sinPhi=sinPhi0;
223 cosPhi=cosPhi0;
224 for (i = 0; i<=NPHI; i++) {
225 GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi,zMin,0.0,0.0,0,0,-1);
226 GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi,zMin,1.0,1.0,0,0,-1);
227 inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi);
228 }
229 endShape();
230
231}
232
233// getChildren
234SoChildList *SoCons::getChildren() const {
235 return children;
236}
237
238
239// computeBBox
240void SoCons::computeBBox(SoAction *, SbBox3f &box, SbVec3f &center ){
241 float fRmax= fRmax1.getValue();
242 if (fRmax2.getValue() > fRmax) fRmax = fRmax2.getValue();
243
244 SbVec3f vmin(-fRmax,-fRmax,-fDz.getValue()),
245 vmax( fRmax, fRmax, fDz.getValue());
246 center.setValue(0,0,0);
247 box.setBounds(vmin,vmax);
248}
249
250
251
252
253// updateChildren
254void SoCons::updateChildren() {
255
256
257 // Redraw the G4Cons....
258
259 assert(children->getLength()==1);
260 SoSeparator *sep = (SoSeparator *) ( *children)[0];
261 SoCoordinate3 *theCoordinates = (SoCoordinate3 *) ( sep->getChild(0));
262 SoNormal *theNormals = (SoNormal *) ( sep->getChild(1));
263 SoNormalBinding *theNormalBinding = (SoNormalBinding *) ( sep->getChild(2));
264 SoIndexedFaceSet *theFaceSet = (SoIndexedFaceSet *) ( sep->getChild(3));
265
266 const int NPHI=24, NPOINTS=2*(2*NPHI+2), NFACES=4*NPHI+2, NINDICES = NFACES*5;
267 float points[NPOINTS][3], normals[NFACES][3];
268#ifdef INVENTOR2_0
269 static long indices[NINDICES];
270#else
271 static int32_t indices[NINDICES];
272#endif
273 static int init=0;
274 double phi, pp, DeltaPhi;
275
276 // Indices need to be generated once! This is here to keep it close to the point
277 // generation, since otherwise it will be confusing.
278
279 int i;
280 if (!init) {
281 init = 1;
282 // Outer face
283 for (i = 0; i< NPHI; i++) {
284 // 0 1 3 2;
285 indices[5*i+0] = 2*i+0;
286 indices[5*i+1] = 2*i+1;
287 indices[5*i+2] = 2*i+3;
288 indices[5*i+3] = 2*i+2;
289 indices[5*i+4] = SO_END_FACE_INDEX;
290 }
291 // the inner face
292 for (i=0;i<NPHI;i++) {
293 indices[5*1*NPHI + 5*i+0] = 2*NPHI+2 + 2*i+0;
294 indices[5*1*NPHI + 5*i+1] = 2*NPHI+2 + 2*i+1;
295 indices[5*1*NPHI + 5*i+2] = 2*NPHI+2 + 2*i+3;
296 indices[5*1*NPHI + 5*i+3] = 2*NPHI+2 + 2*i+2;
297 indices[5*1*NPHI + 5*i+4] = SO_END_FACE_INDEX;
298 }
299 // the top side
300 for (i=0;i<NPHI;i++) {
301 indices[5*2*NPHI + 5*i+0] = 2*i+0;
302 indices[5*2*NPHI + 5*i+1] = 2*i+2;
303 indices[5*2*NPHI + 5*i+2] = NPOINTS - (2*i+4);
304 indices[5*2*NPHI + 5*i+3] = NPOINTS - (2*i+2);
305 indices[5*2*NPHI + 5*i+4] = SO_END_FACE_INDEX;
306 }
307 // the bottom side
308 for (i=0;i<NPHI;i++) {
309 indices[5*3*NPHI + 5*i+0] = 2*i+1;
310 indices[5*3*NPHI + 5*i+1] = NPOINTS - (2*i+1);
311 indices[5*3*NPHI + 5*i+2] = NPOINTS - (2*i+3);
312 indices[5*3*NPHI + 5*i+3] = 2*i+3;
313 indices[5*3*NPHI + 5*i+4] = SO_END_FACE_INDEX;
314 }
315 // the odd side
316 indices[5*4*NPHI +0] = 2*NPHI;
317 indices[5*4*NPHI +1] = 2*NPHI+1;
318 indices[5*4*NPHI +2] = 2*NPHI+3;
319 indices[5*4*NPHI +3] = 2*NPHI+2;
320 indices[5*4*NPHI +4] = SO_END_FACE_INDEX;
321 // aother odd side
322 indices[5*4*NPHI +5 +0] = 0;
323 indices[5*4*NPHI +5 +1] = NPOINTS-2;
324 indices[5*4*NPHI +5 +2] = NPOINTS-1;
325 indices[5*4*NPHI +5 +3] = 1;
326 indices[5*4*NPHI +5 +4] = SO_END_FACE_INDEX;
327 }
328 // Points need to be generated each time:
329 // The outer surface
330 DeltaPhi = fDPhi.getValue()/NPHI, phi = fSPhi.getValue();
331 float t,st,ct;
332 t = FATAN((fRmax2.getValue()-fRmax1.getValue())/(2*fDz.getValue()));
333 st = FSIN(t);
334 ct = FCOS(t);
335 for (i = 0; i<=NPHI; i++) {
336 points[2*i+0][0] = fRmax2.getValue()*FCOS(phi);
337 points[2*i+0][1] = fRmax2.getValue()*FSIN(phi);
338 points[2*i+0][2] = +fDz.getValue();
339 points[2*i+1][0] = fRmax1.getValue()*FCOS(phi);
340 points[2*i+1][1] = fRmax1.getValue()*FSIN(phi);
341 points[2*i+1][2] = -fDz.getValue();
342 pp = phi+DeltaPhi/2.0;
343 if (i!=NPHI) {
344 normals[i][0] = ct * FCOS(pp);
345 normals[i][1] = ct * FSIN(pp);
346 normals[i][2] = -st;
347 }
348 phi+=DeltaPhi;
349 }
350 // The inner surface
351 phi = fSPhi.getValue() + fDPhi.getValue();
352 t = FATAN((fRmin2.getValue()-fRmin1.getValue())/(2*fDz.getValue()));
353 st = FSIN(t);
354 ct = FCOS(t);
355 for (i = 0; i<=NPHI; i++) {
356 points[2*NPHI+2+2*i+0][0] = fRmin2.getValue()*FCOS(phi);
357 points[2*NPHI+2+2*i+0][1] = fRmin2.getValue()*FSIN(phi);
358 points[2*NPHI+2+2*i+0][2] = +fDz.getValue();
359 points[2*NPHI+2+2*i+1][0] = fRmin1.getValue()*FCOS(phi);
360 points[2*NPHI+2+2*i+1][1] = fRmin1.getValue()*FSIN(phi);
361 points[2*NPHI+2+2*i+1][2] = -fDz.getValue();
362 pp = phi-DeltaPhi/2.0;
363 if (i!=NPHI) {
364 normals[NPHI+i][0] = -ct*FCOS(pp);
365 normals[NPHI+i][1] = -ct*FSIN(pp);
366 normals[NPHI+i][2] = st;
367 }
368 phi-=DeltaPhi;
369 }
370 // The top side
371 for (i=0;i<NPHI;i++) {
372 normals[2*NPHI+i][0]=normals[2*NPHI+i][1]=0;
373 normals[2*NPHI+i][2]= 1.0;
374 }
375 // The bottom side
376 for (i=0;i<NPHI;i++) {
377 normals[3*NPHI+i][0]=normals[3*NPHI+i][1]=0;
378 normals[3*NPHI+i][2]= -1.0;
379 }
380 // The odd side
381 phi = fSPhi.getValue();
382 normals[4*NPHI+0][0]= FSIN(phi);
383 normals[4*NPHI+0][1]= -FCOS(phi);
384 normals[4*NPHI+0][2]= 0;
385
386 // Another odd side
387 phi = fSPhi.getValue()+fDPhi.getValue();
388 normals[4*NPHI+1][0]= -FSIN(phi);
389 normals[4*NPHI+1][1]= +FCOS(phi);
390 normals[4*NPHI+1][2]=0;
391
392 for (int np=0;np<NPOINTS;np++) theCoordinates->point.set1Value(np,points[np][0],points[np][1],points[np][2]);
393 theFaceSet->coordIndex.setValues(0,NINDICES,indices);
394 if (smoothDraw.getValue()) {
395 // This Line is replaced by the next one because of an apparent Bug in Inventor (mem. leak).
396 // theNormals->vector.deleteValues(0);
397 for (int nf=0;nf<NFACES;nf++) theNormals->vector.set1Value(nf,normals[nf][0],normals[nf][1],normals[nf][2]);
398 theNormalBinding->value=SoNormalBinding::PER_FACE;
399 }
400 else {
401 for (int nf=0;nf<NFACES;nf++) theNormals->vector.set1Value(nf,normals[nf][0],normals[nf][1],normals[nf][2]);
402 theNormalBinding->value=SoNormalBinding::PER_FACE;
403 }
404}
405
406// generateChildren
407void SoCons::generateChildren() {
408
409 // This routines creates one SoSeparator, one SoCoordinate3, and
410 // one SoLineSet, and puts it in the child list. This is done only
411 // once, whereas redrawing the position of the coordinates occurs each
412 // time an update is necessary, in the updateChildren routine.
413
414 assert(children->getLength() ==0);
415 SoSeparator *sep = new SoSeparator();
416 SoCoordinate3 *theCoordinates = new SoCoordinate3();
417 SoNormal *theNormals = new SoNormal();
418 SoNormalBinding *theNormalBinding = new SoNormalBinding();
419 SoIndexedFaceSet *theFaceSet = new SoIndexedFaceSet();
420 //
421 // This line costs some in render quality! but gives speed.
422 //
423 sep->addChild(theCoordinates);
424 sep->addChild(theNormals);
425 sep->addChild(theNormalBinding);
426 sep->addChild(theFaceSet);
427 children->append(sep);
428}
429
430// generateAlternateRep
431void SoCons::generateAlternateRep() {
432
433 // This routine sets the alternate representation to the child
434 // list of this mode.
435
436 if (children->getLength() == 0) generateChildren();
437 updateChildren();
438 alternateRep.setValue((SoSeparator *) ( *children)[0]);
439}
440
441// clearAlternateRep
442void SoCons::clearAlternateRep() {
443 alternateRep.setValue(NULL);
444}
FCOS
#define FCOS(x)
Definition: SbMath.h:40
FSIN
#define FSIN(x)
Definition: SbMath.h:41
FATAN
#define FATAN(x)
Definition: SbMath.h:45
M_PI
#define M_PI
Definition: SbMath.h:33
GEN_VERTEX
#define GEN_VERTEX(pv, x, y, z, s, t, nx, ny, nz)
SoCons
Definition: SoCons.h:71
SoCons::computeBBox
virtual void computeBBox(SoAction *action, SbBox3f &box, SbVec3f &center)
compute bounding Box, required
Definition: SoCons.cc:240
SoCons::fDPhi
SoSFFloat fDPhi
Delta-angle, in radians.
Definition: SoCons.h:105
SoCons::generateAlternateRep
virtual void generateAlternateRep()
Definition: SoCons.cc:431
SoCons::clearAlternateRep
virtual void clearAlternateRep()
We better be able to clear it, too!
Definition: SoCons.cc:442
SoCons::initClass
static void initClass()
Class Initializer, required.
Definition: SoCons.cc:84
SoCons::fSPhi
SoSFFloat fSPhi
Starting angle, in radians.
Definition: SoCons.h:101
SoCons::fRmax2
SoSFFloat fRmax2
Outside radius at +fDz.
Definition: SoCons.h:93
SoCons::generatePrimitives
virtual void generatePrimitives(SoAction *action)
Generate Primitives, required.
Definition: SoCons.cc:95
SoCons::fRmax1
SoSFFloat fRmax1
Outside radius at -fDz.
Definition: SoCons.h:89
SoCons::fRmin1
SoSFFloat fRmin1
Inside radius at -fDz.
Definition: SoCons.h:81
SoCons::fRmin2
SoSFFloat fRmin2
Inside radius at +fDz.
Definition: SoCons.h:85
SoCons::alternateRep
SoSFNode alternateRep
Alternate rep required - for use by users without HEPVis shared objects.
Definition: SoCons.h:113
SoCons::fDz
SoSFFloat fDz
Half-length along Z.
Definition: SoCons.h:97
SoCons::getChildren
virtual SoChildList * getChildren() const
GetChildList, required whenever the class has hidden children.
Definition: SoCons.cc:234
SoCons::~SoCons
virtual ~SoCons()
Destructor, required.
Definition: SoCons.cc:78
SoCons::smoothDraw
SoSFBool smoothDraw
An Inventor option - slightly better render, worse performance.
Definition: SoCons.h:109
TRUE
#define TRUE
Definition: globals.hh:41