1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // |
---|
27 | // |
---|
28 | // $Id: SoTrap.cc,v 1.8 2006/06/29 21:23:03 gunter Exp $ |
---|
29 | // GEANT4 tag $Name: HEAD $ |
---|
30 | // |
---|
31 | /*-----------------------------HEPVis----------------------------------------*/ |
---|
32 | /* */ |
---|
33 | /* Node: SoTrap */ |
---|
34 | /* Description: Represents the G4Trap Geant Geometry entity */ |
---|
35 | /* Author: Joe Boudreau Nov 11 1996 */ |
---|
36 | /* */ |
---|
37 | /* */ |
---|
38 | /*---------------------------------------------------------------------------*/ |
---|
39 | |
---|
40 | #ifdef G4VIS_BUILD_OI_DRIVER |
---|
41 | |
---|
42 | // this : |
---|
43 | #include "HEPVis/nodes/SoTrap.h" |
---|
44 | |
---|
45 | #include <assert.h> |
---|
46 | #include <cmath> |
---|
47 | #include <Inventor/SbBox.h> |
---|
48 | #include <Inventor/actions/SoGLRenderAction.h> |
---|
49 | #include <Inventor/actions/SoAction.h> |
---|
50 | #include <Inventor/fields/SoSFFloat.h> |
---|
51 | #include <Inventor/misc/SoChildList.h> |
---|
52 | #include <Inventor/nodes/SoSeparator.h> |
---|
53 | #include <Inventor/nodes/SoIndexedFaceSet.h> |
---|
54 | #include <Inventor/nodes/SoNormal.h> |
---|
55 | #include <Inventor/nodes/SoCoordinate3.h> |
---|
56 | #include <Inventor/nodes/SoNormalBinding.h> |
---|
57 | #include <Inventor/SoPrimitiveVertex.h> |
---|
58 | #include <Inventor/elements/SoTextureCoordinateElement.h> |
---|
59 | |
---|
60 | #include "HEPVis/SbMath.h" |
---|
61 | |
---|
62 | // This statement is required |
---|
63 | SO_NODE_SOURCE(SoTrap) |
---|
64 | |
---|
65 | // Constructor |
---|
66 | SoTrap::SoTrap() { |
---|
67 | // This statement is required |
---|
68 | SO_NODE_CONSTRUCTOR(SoTrap); |
---|
69 | |
---|
70 | // Data fields are initialized like this: |
---|
71 | SO_NODE_ADD_FIELD(pDz, (1.0)); |
---|
72 | SO_NODE_ADD_FIELD(pTheta, (0.0)); |
---|
73 | SO_NODE_ADD_FIELD(pPhi, (0.0)); |
---|
74 | SO_NODE_ADD_FIELD(pDy1, (1.0)); |
---|
75 | SO_NODE_ADD_FIELD(pDx1, (1.0)); |
---|
76 | SO_NODE_ADD_FIELD(pDx2, (1.0)); |
---|
77 | SO_NODE_ADD_FIELD(pDy2, (1.0)); |
---|
78 | SO_NODE_ADD_FIELD(pDx3, (1.0)); |
---|
79 | SO_NODE_ADD_FIELD(pDx4, (1.0)); |
---|
80 | SO_NODE_ADD_FIELD(pAlp1, (0.0)); |
---|
81 | SO_NODE_ADD_FIELD(pAlp2, (0.0)); |
---|
82 | SO_NODE_ADD_FIELD(alternateRep, (NULL)); |
---|
83 | children = new SoChildList(this); |
---|
84 | } |
---|
85 | |
---|
86 | // Destructor |
---|
87 | SoTrap::~SoTrap() { |
---|
88 | delete children; |
---|
89 | } |
---|
90 | |
---|
91 | |
---|
92 | // initClass |
---|
93 | void SoTrap::initClass(){ |
---|
94 | // This statement is required. |
---|
95 | SO_NODE_INIT_CLASS(SoTrap,SoShape,"Shape"); |
---|
96 | } |
---|
97 | |
---|
98 | |
---|
99 | // generatePrimitives |
---|
100 | void SoTrap::generatePrimitives(SoAction *action) { |
---|
101 | // This variable is used to store each vertex |
---|
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 coordinate function, |
---|
108 | // rather than generating explicit texture coordinates. |
---|
109 | SbBool useTexFunction= |
---|
110 | (SoTextureCoordinateElement::getType(state) == |
---|
111 | SoTextureCoordinateElement::FUNCTION); |
---|
112 | |
---|
113 | // If we need to generate texture coordinates with a function, |
---|
114 | // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll |
---|
115 | // set up the coordinates directly. |
---|
116 | const SoTextureCoordinateElement *tce = NULL; |
---|
117 | SbVec4f texCoord; |
---|
118 | if (useTexFunction) { |
---|
119 | tce = SoTextureCoordinateElement::getInstance(state); |
---|
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 = NFACES*5; |
---|
148 | int indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, //z back. |
---|
149 | 4,5,6,7, SO_END_FACE_INDEX, //z front. |
---|
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 right. |
---|
154 | |
---|
155 | // points for the eight vertices |
---|
156 | float TthetaCphi = FTAN(pTheta.getValue())*FCOS(pPhi.getValue()); |
---|
157 | float TthetaSphi = FTAN(pTheta.getValue())*FSIN(pPhi.getValue()); |
---|
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.getValue()*Talp1; |
---|
163 | points[0][1] = pDy1.getValue(); |
---|
164 | points[0][2] = -pDz.getValue(); |
---|
165 | |
---|
166 | points[1][0] = -pDx2.getValue()+pDy1.getValue()*Talp1; |
---|
167 | points[1][1] = pDy1.getValue(); |
---|
168 | points[1][2] = -pDz.getValue(); |
---|
169 | |
---|
170 | points[2][0] = -pDx1.getValue()-pDy1.getValue()*Talp1; |
---|
171 | points[2][1] = -pDy1.getValue(); |
---|
172 | points[2][2] = -pDz.getValue(); |
---|
173 | |
---|
174 | points[3][0] = pDx1.getValue()-pDy1.getValue()*Talp1; |
---|
175 | points[3][1] = -pDy1.getValue(); |
---|
176 | points[3][2] = -pDz.getValue(); |
---|
177 | |
---|
178 | points[4][0] = pDx4.getValue()+pDy2.getValue()*Talp2; |
---|
179 | points[4][1] = pDy2.getValue(); |
---|
180 | points[4][2] = pDz.getValue(); |
---|
181 | |
---|
182 | points[5][0] = -pDx4.getValue()+pDy2.getValue()*Talp2; |
---|
183 | points[5][1] = pDy2.getValue(); |
---|
184 | points[5][2] = pDz.getValue(); |
---|
185 | |
---|
186 | points[6][0] = -pDx3.getValue()-pDy2.getValue()*Talp2; |
---|
187 | points[6][1] = -pDy2.getValue(); |
---|
188 | points[6][2] = pDz.getValue(); |
---|
189 | |
---|
190 | points[7][0] = pDx3.getValue()-pDy2.getValue()*Talp2; |
---|
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],points[j0][2]); |
---|
211 | SbVec3f p1(points[j1][0],points[j1][1],points[j1][2]); |
---|
212 | SbVec3f p2(points[j2][0],points[j2][1],points[j2][2]); |
---|
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],normals[nf][1],normals[nf][2]); |
---|
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],normals[nf][1],normals[nf][2]); |
---|
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],normals[nf][1],normals[nf][2]); |
---|
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],normals[nf][1],normals[nf][2]); |
---|
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 &box, SbVec3f ¢er ){ |
---|
253 | float pDx= pDx1.getValue(),pDy=pDy1.getValue(); |
---|
254 | |
---|
255 | if (pDx2.getValue() > pDx) pDx = pDx2.getValue(); |
---|
256 | if (pDx3.getValue() > pDx) pDx = pDx3.getValue(); |
---|
257 | if (pDx4.getValue() > pDx) pDx = pDx4.getValue(); |
---|
258 | if (pDy2.getValue() > pDy) pDy = pDy2.getValue(); |
---|
259 | float TthetaCphi = FTAN(pTheta.getValue())*FCOS(pPhi.getValue()); |
---|
260 | float TthetaSphi = FTAN(pTheta.getValue())*FSIN(pPhi.getValue()); |
---|
261 | float Xalp = FFABS(std::tan(pAlp1.getValue())*pDy1.getValue()); |
---|
262 | float Xalp2 = FFABS(std::tan(pAlp2.getValue())*pDy2.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.getValue()), |
---|
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 = (SoSeparator *) ( *children)[0]; |
---|
285 | SoCoordinate3 *theCoordinates = (SoCoordinate3 *) ( sep->getChild(0)); |
---|
286 | SoNormal *theNormals = (SoNormal *) ( sep->getChild(1)); |
---|
287 | SoNormalBinding *theNormalBinding = (SoNormalBinding *) ( sep->getChild(2)); |
---|
288 | SoIndexedFaceSet *theFaceSet = (SoIndexedFaceSet *) ( sep->getChild(3)); |
---|
289 | |
---|
290 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
---|
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_INDEX, // bottom |
---|
299 | 4,5,6,7, SO_END_FACE_INDEX, // top |
---|
300 | 0,1,5,4, SO_END_FACE_INDEX, |
---|
301 | 1,2,6,5, SO_END_FACE_INDEX, |
---|
302 | 2,3,7,6, SO_END_FACE_INDEX, |
---|
303 | 3,0,4,7, SO_END_FACE_INDEX}; |
---|
304 | |
---|
305 | |
---|
306 | // points for the eight vertices |
---|
307 | float TthetaCphi = FTAN(pTheta.getValue())*FCOS(pPhi.getValue()); |
---|
308 | float TthetaSphi = FTAN(pTheta.getValue())*FSIN(pPhi.getValue()); |
---|
309 | float Talp1 = FTAN(pAlp1.getValue()); |
---|
310 | float Talp2 = FTAN(pAlp2.getValue()); |
---|
311 | |
---|
312 | points[0][0] = pDx2.getValue()+pDy1.getValue()*Talp1; |
---|
313 | points[0][1] = pDy1.getValue(); |
---|
314 | points[0][2] = -pDz.getValue(); |
---|
315 | |
---|
316 | points[1][0] = -pDx2.getValue()+pDy1.getValue()*Talp1; |
---|
317 | points[1][1] = pDy1.getValue(); |
---|
318 | points[1][2] = -pDz.getValue(); |
---|
319 | |
---|
320 | points[2][0] = -pDx1.getValue()-pDy1.getValue()*Talp1; |
---|
321 | points[2][1] = -pDy1.getValue(); |
---|
322 | points[2][2] = -pDz.getValue(); |
---|
323 | |
---|
324 | points[3][0] = pDx1.getValue()-pDy1.getValue()*Talp1; |
---|
325 | points[3][1] = -pDy1.getValue(); |
---|
326 | points[3][2] = -pDz.getValue(); |
---|
327 | |
---|
328 | points[4][0] = pDx4.getValue()+pDy2.getValue()*Talp2; |
---|
329 | points[4][1] = pDy2.getValue(); |
---|
330 | points[4][2] = pDz.getValue(); |
---|
331 | |
---|
332 | points[5][0] = -pDx4.getValue()+pDy2.getValue()*Talp2; |
---|
333 | points[5][1] = pDy2.getValue(); |
---|
334 | points[5][2] = pDz.getValue(); |
---|
335 | |
---|
336 | points[6][0] = -pDx3.getValue()-pDy2.getValue()*Talp2; |
---|
337 | points[6][1] = -pDy2.getValue(); |
---|
338 | points[6][2] = pDz.getValue(); |
---|
339 | |
---|
340 | points[7][0] = pDx3.getValue()-pDy2.getValue()*Talp2; |
---|
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++) theCoordinates->point.set1Value(np,points[np][0],points[np][1],points[np][2]); |
---|
355 | theFaceSet->coordIndex.setValues(0,NINDICES,indices); |
---|
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_FACE; |
---|
371 | } |
---|
372 | |
---|
373 | // generateChildren |
---|
374 | void SoTrap::generateChildren() { |
---|
375 | |
---|
376 | // This routines creates one SoSeparator, one SoCoordinate3, and |
---|
377 | // one SoLineSet, and puts it in the child list. This is done only |
---|
378 | // once, whereas redrawing the position of the coordinates occurs each |
---|
379 | // time an update is necessary, in the updateChildren routine. |
---|
380 | |
---|
381 | assert(children->getLength() ==0); |
---|
382 | SoSeparator *sep = new SoSeparator(); |
---|
383 | SoCoordinate3 *theCoordinates = new SoCoordinate3(); |
---|
384 | SoNormal *theNormals = new SoNormal(); |
---|
385 | SoNormalBinding *theNormalBinding = new SoNormalBinding(); |
---|
386 | SoIndexedFaceSet *theFaceSet = new SoIndexedFaceSet(); |
---|
387 | // |
---|
388 | // This line costs some in render quality! but gives speed. |
---|
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 representation to the child |
---|
401 | // list of this mode. |
---|
402 | |
---|
403 | if (children->getLength() == 0) generateChildren(); |
---|
404 | updateChildren(); |
---|
405 | alternateRep.setValue((SoSeparator *) ( *children)[0]); |
---|
406 | } |
---|
407 | |
---|
408 | // clearAlternateRep |
---|
409 | void SoTrap::clearAlternateRep() { |
---|
410 | alternateRep.setValue(NULL); |
---|
411 | } |
---|
412 | |
---|
413 | #endif |
---|