| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
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10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 //
28 //
29 /*-----------------------------HEPVis---------
30 /*
31 /* Node: SoTrap
32 /* Description: Represents the G4Trap Gea
33 /* Author: Joe Boudreau Nov 11 1996
34 /*
35 /*
36 /*--------------------------------------------
37
38 // this :
39 #include "HEPVis/nodes/SoTrap.h"
40
41 #include <assert.h>
42 #include <cmath>
43 #include <Inventor/SbBox.h>
44 #include <Inventor/actions/SoGLRenderAction.h>
45 #include <Inventor/actions/SoAction.h>
46 #include <Inventor/fields/SoSFFloat.h>
47 #include <Inventor/misc/SoChildList.h>
48 #include <Inventor/nodes/SoSeparator.h>
49 #include <Inventor/nodes/SoIndexedFaceSet.h>
50 #include <Inventor/nodes/SoNormal.h>
51 #include <Inventor/nodes/SoCoordinate3.h>
52 #include <Inventor/nodes/SoNormalBinding.h>
53 #include <Inventor/SoPrimitiveVertex.h>
54 #include <Inventor/elements/SoTextureCoordinat
55
56 #include "HEPVis/SbMath.h"
57
58 // This statement is required
59 SO_NODE_SOURCE(SoTrap)
60
61 // Constructor
62 SoTrap::SoTrap() {
63 // This statement is required
64 SO_NODE_CONSTRUCTOR(SoTrap);
65
66 // Data fields are initialized like this:
67 SO_NODE_ADD_FIELD(pDz, (1.0)
68 SO_NODE_ADD_FIELD(pTheta, (0.0)
69 SO_NODE_ADD_FIELD(pPhi, (0.0)
70 SO_NODE_ADD_FIELD(pDy1, (1.0)
71 SO_NODE_ADD_FIELD(pDx1, (1.0)
72 SO_NODE_ADD_FIELD(pDx2, (1.0)
73 SO_NODE_ADD_FIELD(pDy2, (1.0)
74 SO_NODE_ADD_FIELD(pDx3, (1.0)
75 SO_NODE_ADD_FIELD(pDx4, (1.0)
76 SO_NODE_ADD_FIELD(pAlp1, (0.0)
77 SO_NODE_ADD_FIELD(pAlp2, (0.0)
78 SO_NODE_ADD_FIELD(alternateRep, (NULL
79 children = new SoChildList(this);
80 }
81
82 // Destructor
83 SoTrap::~SoTrap() {
84 delete children;
85 }
86
87
88 // initClass
89 void SoTrap::initClass(){
90 // This statement is required.
91 static bool first = true;
92 if (first) {
93 first = false;
94 SO_NODE_INIT_CLASS(SoTrap,SoShape,"Shape")
95 }
96 }
97
98
99 // generatePrimitives
100 void SoTrap::generatePrimitives(SoAction *acti
101 // This variable is used to store each verte
102 SoPrimitiveVertex pv;
103
104 // Access the stat from the action
105 SoState *state = action->getState();
106
107 // See if we have to use a texture coordinat
108 // rather than generating explicit texture c
109 SbBool useTexFunction=
110 (SoTextureCoordinateElement::getType(state
111 SoTextureCoordinateElement::FUNCTION);
112
113 // If we need to generate texture coordinate
114 // we'll need an SoGLTextureCoordinateElemen
115 // set up the coordinates directly.
116 const SoTextureCoordinateElement *tce = NULL
117 SbVec4f texCoord;
118 if (useTexFunction) {
119 tce = SoTextureCoordinateElement::getInsta
120 }
121 else {
122 texCoord[2] = 0.0;
123 texCoord[3] = 1.0;
124 }
125 SbVec3f point, normal;
126
127
128 //////////////////////////////////////////
129 //----------------------------------------
130 #define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \
131 point.setValue(x,y,z); \
132 normal.setValue(nx,ny,nz); \
133 if (useTexFunction) { \
134 texCoord=tce->get(point,normal); \
135 } \
136 else { \
137 texCoord[0]=s; \
138 texCoord[1]=t; \
139 } \
140 pv.setPoint(point); \
141 pv.setNormal(normal); \
142 pv.setTextureCoords(texCoord); \
143 shapeVertex(&pv);
144 //----------------------------------------
145 //////////////////////////////////////////
146
147 const int NPOINTS=8, NFACES=6, NINDICES = NF
148 int indices[NINDICES] = {3,2,1,0, SO_END_FAC
149 4,5,6,7, SO_END_FACE_INDEX, //z fron
150 0,1,5,4, SO_END_FACE_INDEX, //y up.
151 1,2,6,5, SO_END_FACE_INDEX, //x left
152 2,3,7,6, SO_END_FACE_INDEX, //y down
153 3,0,4,7, SO_END_FACE_INDEX}; //x righ
154
155 // points for the eight vertices
156 float TthetaCphi = FTAN(pTheta.getValue())*F
157 float TthetaSphi = FTAN(pTheta.getValue())*F
158 float Talp1 = FTAN(pAlp1.getValue());
159 float Talp2 = FTAN(pAlp2.getValue());
160
161 float points[NPOINTS][3];
162 points[0][0] = pDx2.getValue()+pDy1.getValu
163 points[0][1] = pDy1.getValue();
164 points[0][2] = -pDz.getValue();
165
166 points[1][0] = -pDx2.getValue()+pDy1.getValu
167 points[1][1] = pDy1.getValue();
168 points[1][2] = -pDz.getValue();
169
170 points[2][0] = -pDx1.getValue()-pDy1.getValu
171 points[2][1] = -pDy1.getValue();
172 points[2][2] = -pDz.getValue();
173
174 points[3][0] = pDx1.getValue()-pDy1.getValu
175 points[3][1] = -pDy1.getValue();
176 points[3][2] = -pDz.getValue();
177
178 points[4][0] = pDx4.getValue()+pDy2.getValu
179 points[4][1] = pDy2.getValue();
180 points[4][2] = pDz.getValue();
181
182 points[5][0] = -pDx4.getValue()+pDy2.getValu
183 points[5][1] = pDy2.getValue();
184 points[5][2] = pDz.getValue();
185
186 points[6][0] = -pDx3.getValue()-pDy2.getValu
187 points[6][1] = -pDy2.getValue();
188 points[6][2] = pDz.getValue();
189
190 points[7][0] = pDx3.getValue()-pDy2.getValu
191 points[7][1] = -pDy2.getValue();
192 points[7][2] = pDz.getValue();
193
194 int i;
195 for (i=0;i<4;i++) {
196 points[i][0] -= pDz.getValue()*TthetaCphi;
197 points[i][1] -= pDz.getValue()*TthetaSphi;
198 }
199 for (i=4;i<8;i++) {
200 points[i][0] += pDz.getValue()*TthetaCphi;
201 points[i][1] += pDz.getValue()*TthetaSphi;
202 }
203
204 SbVec3f normals[NFACES];
205 int nf;
206 for (nf=0;nf<NFACES;nf++) {
207 int j0 = indices[5*nf + 0];
208 int j1 = indices[5*nf + 1];
209 int j2 = indices[5*nf + 2];
210 SbVec3f p0(points[j0][0],points[j0][1],poi
211 SbVec3f p1(points[j1][0],points[j1][1],poi
212 SbVec3f p2(points[j2][0],points[j2][1],poi
213 normals[nf] = (p1-p0).cross(p2-p0);
214 normals[nf].normalize();
215 }
216
217 float x,y,z;
218 int index;
219 for (nf=0;nf<NFACES;nf++) {
220 beginShape(action,TRIANGLE_FAN);
221 index = indices[nf * 5];
222 x = points[index][0];
223 y = points[index][1];
224 z = points[index][2];
225 GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0]
226 index = indices[nf * 5 + 1];
227 x = points[index][0];
228 y = points[index][1];
229 z = points[index][2];
230 GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0]
231 index = indices[nf * 5 + 2];
232 x = points[index][0];
233 y = points[index][1];
234 z = points[index][2];
235 GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0]
236 index = indices[nf * 5 + 3];
237 x = points[index][0];
238 y = points[index][1];
239 z = points[index][2];
240 GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0]
241 endShape();
242 }
243 }
244
245 // getChildren
246 SoChildList *SoTrap::getChildren() const {
247 return children;
248 }
249
250
251 // computeBBox
252 void SoTrap::computeBBox(SoAction *, SbBox3f &
253 float pDx= pDx1.getValue(),pDy=pDy1.getValue
254
255 if (pDx2.getValue() > pDx) pDx = pDx2.getVal
256 if (pDx3.getValue() > pDx) pDx = pDx3.getVal
257 if (pDx4.getValue() > pDx) pDx = pDx4.getVal
258 if (pDy2.getValue() > pDy) pDy = pDy2.getVal
259 float TthetaCphi = FTAN(pTheta.getValue())*F
260 float TthetaSphi = FTAN(pTheta.getValue())*F
261 float Xalp = FFABS(std::tan(pAlp1.getValue()
262 float Xalp2 = FFABS(std::tan(pAlp2.getValue(
263 if (Xalp< Xalp2) Xalp=Xalp2;
264 pDx += FFABS(TthetaCphi*pDz.getValue());
265 pDx += Xalp;
266 pDy += FFABS(TthetaSphi*pDz.getValue());
267
268
269 center.setValue(0,0,0);
270 box.setBounds(SbVec3f(-pDx,-pDy,-pDz.getValu
271 SbVec3f( pDx, pDy, pDz.getValue()));
272 }
273
274
275
276
277 // updateChildren
278 void SoTrap::updateChildren() {
279
280
281 // Redraw the G4Trap....
282
283 assert(children->getLength()==1);
284 SoSeparator *sep = (SoS
285 SoCoordinate3 *theCoordinates = (SoC
286 SoNormal *theNormals = (SoN
287 SoNormalBinding *theNormalBinding = (SoN
288 SoIndexedFaceSet *theFaceSet = (SoI
289
290 const int NPOINTS=8, NFACES=6, NINDICES = NF
291 float points[NPOINTS][3];
292 // Indices for the eight faces
293 #ifdef INVENTOR2_0
294 static long
295 #else
296 static int32_t
297 #endif
298 indices[NINDICES] = {3,2,1,0, SO_END_FACE_IN
299 4,5,6,7, SO_END_FACE_INDE
300 0,1,5,4, SO_END_FACE_INDE
301 1,2,6,5, SO_END_FACE_INDE
302 2,3,7,6, SO_END_FACE_INDE
303 3,0,4,7, SO_END_FACE_INDE
304
305
306 // points for the eight vertices
307 float TthetaCphi = FTAN(pTheta.getValue())*F
308 float TthetaSphi = FTAN(pTheta.getValue())*F
309 float Talp1 = FTAN(pAlp1.getValue());
310 float Talp2 = FTAN(pAlp2.getValue());
311
312 points[0][0] = pDx2.getValue()+pDy1.getValu
313 points[0][1] = pDy1.getValue();
314 points[0][2] = -pDz.getValue();
315
316 points[1][0] = -pDx2.getValue()+pDy1.getValu
317 points[1][1] = pDy1.getValue();
318 points[1][2] = -pDz.getValue();
319
320 points[2][0] = -pDx1.getValue()-pDy1.getValu
321 points[2][1] = -pDy1.getValue();
322 points[2][2] = -pDz.getValue();
323
324 points[3][0] = pDx1.getValue()-pDy1.getValu
325 points[3][1] = -pDy1.getValue();
326 points[3][2] = -pDz.getValue();
327
328 points[4][0] = pDx4.getValue()+pDy2.getValu
329 points[4][1] = pDy2.getValue();
330 points[4][2] = pDz.getValue();
331
332 points[5][0] = -pDx4.getValue()+pDy2.getValu
333 points[5][1] = pDy2.getValue();
334 points[5][2] = pDz.getValue();
335
336 points[6][0] = -pDx3.getValue()-pDy2.getValu
337 points[6][1] = -pDy2.getValue();
338 points[6][2] = pDz.getValue();
339
340 points[7][0] = pDx3.getValue()-pDy2.getValu
341 points[7][1] = -pDy2.getValue();
342 points[7][2] = pDz.getValue();
343
344 int i;
345 for (i=0;i<4;i++) {
346 points[i][0] -= pDz.getValue()*TthetaCphi;
347 points[i][1] -= pDz.getValue()*TthetaSphi;
348 }
349 for (i=4;i<8;i++) {
350 points[i][0] += pDz.getValue()*TthetaCphi;
351 points[i][1] += pDz.getValue()*TthetaSphi;
352 }
353
354 for (int np=0;np<NPOINTS;np++) theCoordinate
355 theFaceSet->coordIndex.setValues(0,NINDICES,
356 theNormals->vector.deleteValues(0);
357 theNormals->vector.insertSpace(0,6);
358 for (int n=0;n<6;n++) {
359 int i0 = 5*n+0,i1=5*n+1,i2=5*n+2;
360 int j0 = theFaceSet->coordIndex[i0];
361 int j1 = theFaceSet->coordIndex[i1];
362 int j2 = theFaceSet->coordIndex[i2];
363 SbVec3f p0= theCoordinates->point[j0];
364 SbVec3f p1= theCoordinates->point[j1];
365 SbVec3f p2= theCoordinates->point[j2];
366 SbVec3f normal = (p1-p0).cross(p2-p0);
367 normal.normalize();
368 theNormals->vector.set1Value(n,normal);
369 }
370 theNormalBinding->value=SoNormalBinding::PER
371 }
372
373 // generateChildren
374 void SoTrap::generateChildren() {
375
376 // This routines creates one SoSeparator, on
377 // one SoLineSet, and puts it in the child l
378 // once, whereas redrawing the position of t
379 // time an update is necessary, in the updat
380
381 assert(children->getLength() ==0);
382 SoSeparator *sep = new SoS
383 SoCoordinate3 *theCoordinates = new SoC
384 SoNormal *theNormals = new SoN
385 SoNormalBinding *theNormalBinding = new SoN
386 SoIndexedFaceSet *theFaceSet = new SoI
387 //
388 // This line costs some in render quality! b
389 //
390 sep->addChild(theCoordinates);
391 sep->addChild(theNormals);
392 sep->addChild(theNormalBinding);
393 sep->addChild(theFaceSet);
394 children->append(sep);
395 }
396
397 // generateAlternateRep
398 void SoTrap::generateAlternateRep() {
399
400 // This routine sets the alternate represent
401 // list of this mode.
402
403 if (children->getLength() == 0) generateChil
404 updateChildren();
405 alternateRep.setValue((SoSeparator *) ( *ch
406 }
407
408 // clearAlternateRep
409 void SoTrap::clearAlternateRep() {
410 alternateRep.setValue(NULL);
411 }
412