Context Navigation

source: trunk/source/visualization/OpenGL/src/G4OpenGLSceneHandler.cc @ 1127

Last change on this file since 1127 was 1127, checked in by garnier, 15 years ago
pb quand on ne met pas la vis QT corrige
Property svn:mime-type set to `text/cpp`
File size: 27.4 KB

Line
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	// $Id: G4OpenGLSceneHandler.cc,v 1.55 2009/03/03 14:51:29 lgarnier Exp $
28	// GEANT4 tag $Name: $
29	//
30	//
31	// Andrew Walkden 27th March 1996
32	// OpenGL stored scene - creates OpenGL display lists.
33	// OpenGL immediate scene - draws immediately to buffer
34	// (saving space on server).
35
36	#ifdef G4VIS_BUILD_OPENGL_DRIVER
37
38	// Included here - problems with HP compiler if not before other includes?
39	#include "G4NURBS.hh"
40
41	// Here follows a special for Mesa, the OpenGL emulator. Does not affect
42	// other OpenGL's, as far as I'm aware. John Allison 18/9/96.
43	#define CENTERLINE_CLPP /* CenterLine C++ workaround: */
44	// Also seems to be required for HP's CC and AIX xlC, at least.
45
46
47	#include "G4OpenGLQtViewer.hh"
48	#include "G4OpenGLSceneHandler.hh"
49	#include "G4OpenGLViewer.hh"
50	#include "G4OpenGLFontBaseStore.hh"
51	#include "G4OpenGLTransform3D.hh"
52	#include "G4Point3D.hh"
53	#include "G4Normal3D.hh"
54	#include "G4Transform3D.hh"
55	#include "G4Polyline.hh"
56	#include "G4Polymarker.hh"
57	#include "G4Text.hh"
58	#include "G4Circle.hh"
59	#include "G4Square.hh"
60	#include "G4VMarker.hh"
61	#include "G4Polyhedron.hh"
62	#include "G4VisAttributes.hh"
63	#include "G4PhysicalVolumeModel.hh"
64	#include "G4VPhysicalVolume.hh"
65	#include "G4LogicalVolume.hh"
66	#include "G4VSolid.hh"
67	#include "G4Scene.hh"
68	#include "G4VisExtent.hh"
69	#include "G4AttHolder.hh"
70
71	G4OpenGLSceneHandler::G4OpenGLSceneHandler (G4VGraphicsSystem& system,
72	G4int id,
73	const G4String& name):
74	G4VSceneHandler (system, id, name),
75	fPickName(0),
76	fProcessing2D (false),
77	fProcessingPolymarker(false)
78	{}
79
80	G4OpenGLSceneHandler::~G4OpenGLSceneHandler ()
81	{
82	ClearStore ();
83	}
84
85	const GLubyte G4OpenGLSceneHandler::fStippleMaskHashed [128] = {
86	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
87	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
88	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
89	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
90	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
91	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
92	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
93	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
94	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
95	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
96	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
97	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
98	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
99	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
100	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
101	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55
102	};
103
104	void G4OpenGLSceneHandler::ClearAndDestroyAtts()
105	{
106	std::map<GLuint, G4AttHolder*>::iterator i;
107	for (i = fPickMap.begin(); i != fPickMap.end(); ++i) delete i->second;
108	fPickMap.clear();
109	}
110
111	void G4OpenGLSceneHandler::PreAddSolid
112	(const G4Transform3D& objectTransformation,
113	const G4VisAttributes& visAttribs)
114	{
115	G4VSceneHandler::PreAddSolid (objectTransformation, visAttribs);
116	}
117
118	void G4OpenGLSceneHandler::BeginPrimitives
119	(const G4Transform3D& objectTransformation)
120	{
121	G4VSceneHandler::BeginPrimitives (objectTransformation);
122	}
123
124	void G4OpenGLSceneHandler::EndPrimitives ()
125	{
126	G4VSceneHandler::EndPrimitives ();
127	}
128
129	void G4OpenGLSceneHandler::BeginPrimitives2D
130	(const G4Transform3D& objectTransformation)
131	{
132	G4VSceneHandler::BeginPrimitives2D (objectTransformation);
133	fProcessing2D = true;
134	}
135
136	void G4OpenGLSceneHandler::EndPrimitives2D ()
137	{
138	fProcessing2D = false;
139	G4VSceneHandler::EndPrimitives2D ();
140	}
141
142	const G4Polyhedron* G4OpenGLSceneHandler::CreateSectionPolyhedron ()
143	{
144	// Clipping done in G4OpenGLViewer::SetView.
145	return 0;
146
147	// But...OpenGL no longer seems to reconstruct clipped edges, so,
148	// when the BooleanProcessor is up to it, abandon this and use
149	// generic clipping in G4VSceneHandler::CreateSectionPolyhedron...
150	// return G4VSceneHandler::CreateSectionPolyhedron();
151	}
152
153	const G4Polyhedron* G4OpenGLSceneHandler::CreateCutawayPolyhedron ()
154	{
155	// Cutaway done in G4OpenGLViewer::SetView.
156	return 0;
157
158	// But...if not, when the BooleanProcessor is up to it...
159	// return G4VSceneHandler::CreateCutawayPolyhedron();
160	}
161
162	void G4OpenGLSceneHandler::AddPrimitive (const G4Polyline& line)
163	{
164	G4int nPoints = line.size ();
165	if (nPoints <= 0) return;
166
167	// Loads G4Atts for picking...
168	if (fpViewer->GetViewParameters().IsPicking()) {
169	G4AttHolder* holder = new G4AttHolder;
170	LoadAtts(line, holder);
171	fPickMap[fPickName] = holder;
172	}
173
174	// Note: colour treated in sub-class.
175
176	if (fpViewer -> GetViewParameters ().IsMarkerNotHidden ())
177	glDisable (GL_DEPTH_TEST);
178	else {glEnable (GL_DEPTH_TEST); glDepthFunc (GL_LESS);}
179
180	glDisable (GL_LIGHTING);
181
182	// Get vis attributes - pick up defaults if none.
183	const G4VisAttributes* pVA =
184	fpViewer -> GetApplicableVisAttributes (line.GetVisAttributes ());
185
186	G4double lineWidth = GetLineWidth(pVA);
187	glLineWidth(lineWidth);
188
189	glBegin (GL_LINE_STRIP);
190	for (G4int iPoint = 0; iPoint < nPoints; iPoint++) {
191	G4double x, y, z;
192	x = line[iPoint].x();
193	y = line[iPoint].y();
194	z = line[iPoint].z();
195	glVertex3d (x, y, z);
196	}
197	glEnd ();
198	}
199
200	void G4OpenGLSceneHandler::AddPrimitive (const G4Polymarker& polymarker)
201	{
202	G4int nPoints = polymarker.size ();
203	if (nPoints <= 0) return;
204
205	fProcessingPolymarker = true;
206
207	// Loads G4Atts for picking...
208	if (fpViewer->GetViewParameters().IsPicking()) {
209	G4AttHolder* holder = new G4AttHolder;
210	LoadAtts(polymarker, holder);
211	fPickMap[fPickName] = holder;
212	}
213
214	switch (polymarker.GetMarkerType()) {
215	default:
216	case G4Polymarker::dots:
217	{
218	for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
219	G4Circle dot (polymarker);
220	dot.SetPosition (polymarker[iPoint]);
221	dot.SetWorldSize (0.);
222	dot.SetScreenSize (0.1); // Very small circle.
223	G4OpenGLSceneHandler::AddPrimitive (dot);
224	}
225	}
226	break;
227	case G4Polymarker::circles:
228	{
229	for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
230	G4Circle circle (polymarker);
231	circle.SetPosition (polymarker[iPoint]);
232	G4OpenGLSceneHandler::AddPrimitive (circle);
233	}
234	}
235	break;
236	case G4Polymarker::squares:
237	{
238	for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
239	G4Square square (polymarker);
240	square.SetPosition (polymarker[iPoint]);
241	G4OpenGLSceneHandler::AddPrimitive (square);
242	}
243	}
244	break;
245	}
246
247	fProcessingPolymarker = false;
248	}
249
250	void G4OpenGLSceneHandler::AddPrimitive (const G4Text& text) {
251
252	// Loads G4Atts for picking...
253	if (fpViewer->GetViewParameters().IsPicking()) {
254	G4AttHolder* holder = new G4AttHolder;
255	LoadAtts(text, holder);
256	fPickMap[fPickName] = holder;
257	}
258
259	const G4Colour& c = GetTextColour (text); // Picks up default if none.
260	MarkerSizeType sizeType;
261	G4double size = GetMarkerSize (text, sizeType);
262	G4ThreeVector position (text.GetPosition ());
263	G4String textString = text.GetText();
264
265	G4int font_base = G4OpenGLFontBaseStore::GetFontBase(fpViewer,size);
266	if (font_base < 0) {
267
268	G4OpenGLQtViewer* oGLSQtViewer = dynamic_cast<G4OpenGLQtViewer*>(fpViewer);
269	if (oGLSQtViewer) {
270	// FIXME : No font for the moment
271	const char* textCString = textString.c_str();
272	oGLSQtViewer->drawText(textCString,position.x(),position.y(),position.z(),size);
273	}
274	static G4int callCount = 0;
275	++callCount;
276	if (callCount <= 10 \|\| callCount%100 == 0) {
277	G4cout <<
278	"G4OpenGLSceneHandler::AddPrimitive (const G4Text&) call count "
279	<< callCount <<
280	"\n No fonts available."
281	"\n Called with text \""
282	<< text.GetText ()
283	<< "\"\n at " << position
284	<< ", size " << size
285	<< ", offsets " << text.GetXOffset () << ", " << text.GetYOffset ()
286	<< ", type " << G4int(sizeType)
287	<< ", colour " << c
288	<< G4endl;
289	}
290	return;
291	}
292	const char* textCString = textString.c_str();
293	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
294	G4OpenGLQtViewer* oGLSQtViewer = dynamic_cast<G4OpenGLQtViewer*>(fpViewer);
295
296	if (oGLSQtViewer) {
297	// FIXME : No font for the moment
298	oGLSQtViewer->drawText(textCString,position.x(),position.y(),position.z(),size);
299	} else {
300	glDisable (GL_DEPTH_TEST);
301	glDisable (GL_LIGHTING);
302
303	glRasterPos3d(position.x(),position.y(),position.z());
304	// No action on offset or layout at present.
305	glPushAttrib(GL_LIST_BIT);
306	glListBase(font_base);
307	glCallLists(strlen(textCString), GL_UNSIGNED_BYTE, (GLubyte *)textCString);
308	glPopAttrib();
309	}
310	// //////////////
311	// makeCurrent();
312	// glPushAttrib(GL_LIST_BIT \| GL_CURRENT_BIT \| GL_COLOR_BUFFER_BIT);
313	// glRasterPos3d(x, y, z);
314	// glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
315	// glEnable(GL_BLEND);
316	// glListBase(fontDisplayListBase(fnt, listBase));
317	// glCallLists(str.length(), GL_UNSIGNED_BYTE, str.local8Bit());
318	// glPopAttrib();
319	// //////////////
320
321	#ifdef G4DEBUG_VIS_OGL
322	printf ("G4OpenGLSceneHandler::AddPrimitives TEXT\n");
323	#endif
324	}
325
326	void G4OpenGLSceneHandler::AddPrimitive (const G4Circle& circle) {
327	glEnable (GL_POINT_SMOOTH);
328	AddCircleSquare (circle, G4OpenGLBitMapStore::circle);
329	}
330
331	void G4OpenGLSceneHandler::AddPrimitive (const G4Square& square) {
332	glDisable (GL_POINT_SMOOTH);
333	AddCircleSquare (square, G4OpenGLBitMapStore::square);
334	}
335
336	void G4OpenGLSceneHandler::AddCircleSquare
337	(const G4VMarker& marker,
338	G4OpenGLBitMapStore::Shape shape) {
339
340	if (!fProcessingPolymarker) { // Polymarker has already loaded atts.
341	// Loads G4Atts for picking...
342	if (fpViewer->GetViewParameters().IsPicking()) {
343	G4AttHolder* holder = new G4AttHolder;
344	LoadAtts(marker, holder);
345	fPickMap[fPickName] = holder;
346	}
347	}
348
349	// Note: colour treated in sub-class.
350
351	if (fpViewer -> GetViewParameters ().IsMarkerNotHidden ())
352	glDisable (GL_DEPTH_TEST);
353	else {glEnable (GL_DEPTH_TEST); glDepthFunc (GL_LESS);}
354
355	glDisable (GL_LIGHTING);
356
357	// Get vis attributes - pick up defaults if none.
358	const G4VisAttributes* pVA =
359	fpViewer -> GetApplicableVisAttributes (marker.GetVisAttributes ());
360
361	G4double lineWidth = GetLineWidth(pVA);
362	glLineWidth(lineWidth);
363
364	G4VMarker::FillStyle style = marker.GetFillStyle();
365
366	G4bool filled = false;
367	static G4bool hashedWarned = false;
368
369	switch (style) {
370	case G4VMarker::noFill:
371	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
372	filled = false;
373	break;
374
375	case G4VMarker::hashed:
376	if (!hashedWarned) {
377	G4cout << "Hashed fill style in G4OpenGLSceneHandler."
378	<< "\n Not implemented. Using G4VMarker::filled."
379	<< G4endl;
380	hashedWarned = true;
381	}
382	// Maybe use
383	//glPolygonStipple (fStippleMaskHashed);
384	// Drop through to filled...
385
386	case G4VMarker::filled:
387	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
388	filled = true;
389	break;
390
391	}
392
393	// A few useful quantities...
394	G4Point3D centre = marker.GetPosition();
395	MarkerSizeType sizeType;
396	G4double size = GetMarkerSize(marker, sizeType);
397
398	// Draw...
399	if (sizeType == world) { // Size specified in world coordinates.
400
401	DrawXYPolygon (shape, size, centre, pVA);
402
403	} else { // Size specified in screen (window) coordinates.
404	glPointSize (size);
405	glBegin (GL_POINTS);
406	glVertex3f(centre.x(),centre.y(),centre.z());
407	glEnd();
408	//Antialiasing
409	glEnable (GL_POINT_SMOOTH);
410	//Transparency
411	glEnable(GL_BLEND);
412	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
413
414	// L. GARNIER 1 March 2009
415	// Old method, we draw a bitmap instead of a GL_POINT.
416	// I remove it because it cost in term of computing performances
417	// and gl2ps can't draw bitmaps
418
419	// glRasterPos3d(centre.x(),centre.y(),centre.z());
420	// const GLubyte* marker =
421	// G4OpenGLBitMapStore::GetBitMap(shape, size, filled);
422	// glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
423	// glBitmap(GLsizei(size), GLsizei(size), size/2., size/2., 0., 0., marker);
424	}
425	}
426
427	void G4OpenGLSceneHandler::DrawXYPolygon
428	(G4OpenGLBitMapStore::Shape shape,
429	G4double size,
430	const G4Point3D& centre,
431	const G4VisAttributes* pApplicableVisAtts)
432	{
433	G4int nSides;
434	G4double startPhi;
435	if (shape == G4OpenGLBitMapStore::circle) {
436	nSides = GetNoOfSides(pApplicableVisAtts);
437	startPhi = 0.;
438	} else {
439	nSides = 4;
440	startPhi = -pi / 4.;
441	}
442
443	const G4Vector3D& viewpointDirection =
444	fpViewer -> GetViewParameters().GetViewpointDirection();
445	const G4Vector3D& up = fpViewer->GetViewParameters().GetUpVector();
446	const G4double dPhi = twopi / nSides;
447	const G4double radius = size / 2.;
448	G4Vector3D start = radius * (up.cross(viewpointDirection)).unit();
449	G4double phi;
450	G4int i;
451
452	glBegin (GL_POLYGON);
453	for (i = 0, phi = startPhi; i < nSides; i++, phi += dPhi) {
454	G4Vector3D r = start; r.rotate(phi, viewpointDirection);
455	G4Vector3D p = centre + r;
456	glVertex3d (p.x(), p.y(), p.z());
457	}
458	glEnd ();
459	}
460
461	void G4OpenGLSceneHandler::AddPrimitive (const G4Scale& scale)
462	{
463	G4VSceneHandler::AddPrimitive(scale);
464	}
465
466	//Method for handling G4Polyhedron objects for drawing solids.
467	void G4OpenGLSceneHandler::AddPrimitive (const G4Polyhedron& polyhedron) {
468
469	// Assume all facets are planar convex quadrilaterals.
470	// Draw each facet individually
471
472	if (polyhedron.GetNoFacets() == 0) return;
473
474	// Loads G4Atts for picking...
475	if (fpViewer->GetViewParameters().IsPicking()) {
476	G4AttHolder* holder = new G4AttHolder;
477	LoadAtts(polyhedron, holder);
478	fPickMap[fPickName] = holder;
479	}
480
481	// Get vis attributes - pick up defaults if none.
482	const G4VisAttributes* pVA =
483	fpViewer -> GetApplicableVisAttributes (polyhedron.GetVisAttributes ());
484
485	// Get view parameters that the user can force through the vis
486	// attributes, thereby over-riding the current view parameter.
487	G4ViewParameters::DrawingStyle drawing_style = GetDrawingStyle (pVA);
488
489	//Get colour, etc...
490	G4bool transparency_enabled = true;
491	G4OpenGLViewer* pViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
492	if (pViewer) transparency_enabled = pViewer->transparency_enabled;
493	const G4Colour& c = pVA->GetColour();
494	GLfloat materialColour [4];
495	materialColour [0] = c.GetRed ();
496	materialColour [1] = c.GetGreen ();
497	materialColour [2] = c.GetBlue ();
498	if (transparency_enabled) {
499	materialColour [3] = c.GetAlpha ();
500	} else {
501	materialColour [3] = 1.;
502	}
503
504	G4double lineWidth = GetLineWidth(pVA);
505	glLineWidth(lineWidth);
506
507	GLfloat clear_colour[4];
508	glGetFloatv (GL_COLOR_CLEAR_VALUE, clear_colour);
509
510	G4bool isAuxEdgeVisible = GetAuxEdgeVisible (pVA);
511
512	G4bool clipping = pViewer->fVP.IsSection() \|\| pViewer->fVP.IsCutaway();
513
514	// Lighting disabled unless otherwise requested
515	glDisable (GL_LIGHTING);
516
517	switch (drawing_style) {
518	case (G4ViewParameters::hlhsr):
519	// Set up as for hidden line removal but paint polygon faces later...
520	case (G4ViewParameters::hlr):
521	glEnable (GL_STENCIL_TEST);
522	// The stencil buffer is cleared in G4OpenGLViewer::ClearView.
523	// The procedure below leaves it clear.
524	glStencilFunc (GL_ALWAYS, 0, 1);
525	glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT);
526	glEnable (GL_DEPTH_TEST);
527	glDepthFunc (GL_LEQUAL);
528	if (materialColour[3] < 1.) {
529	// Transparent...
530	glDisable (GL_CULL_FACE);
531	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
532	} else {
533	// Opaque...
534	if (clipping) {
535	glDisable (GL_CULL_FACE);
536	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
537	} else {
538	glEnable (GL_CULL_FACE);
539	glCullFace (GL_BACK);
540	glPolygonMode (GL_FRONT, GL_LINE);
541	}
542	}
543	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
544	break;
545	case (G4ViewParameters::hsr):
546	glEnable (GL_DEPTH_TEST);
547	glDepthFunc (GL_LEQUAL);
548	if (materialColour[3] < 1.) {
549	// Transparent...
550	glDepthMask (0); // Make depth buffer read-only.
551	glDisable (GL_CULL_FACE);
552	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
553	glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, materialColour);
554	} else {
555	// Opaque...
556	glDepthMask (1); // Make depth buffer writable (default).
557	if (clipping) {
558	glDisable (GL_CULL_FACE);
559	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
560	} else {
561	glEnable (GL_CULL_FACE);
562	glCullFace (GL_BACK);
563	glPolygonMode (GL_FRONT, GL_FILL);
564	}
565	glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, materialColour);
566	}
567	if (!fProcessing2D) glEnable (GL_LIGHTING);
568	break;
569	case (G4ViewParameters::wireframe):
570	default:
571	glEnable (GL_DEPTH_TEST);
572	glDepthFunc (GL_LEQUAL); //??? was GL_ALWAYS
573	glDisable (GL_CULL_FACE);
574	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
575	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
576	break;
577	}
578
579	//Loop through all the facets...
580	glBegin (GL_QUADS);
581	G4bool notLastFace;
582	do {
583
584	//First, find vertices, edgeflags and normals and note "not last facet"...
585	G4Point3D vertex[4];
586	G4int edgeFlag[4];
587	G4Normal3D normals[4];
588	G4int n;
589	notLastFace = polyhedron.GetNextFacet(n, vertex, edgeFlag, normals);
590
591	//Loop through the four edges of each G4Facet...
592	G4int edgeCount = 0;
593	for(edgeCount = 0; edgeCount < n; ++edgeCount) {
594	// Check to see if edge is visible or not...
595	if (isAuxEdgeVisible) {
596	edgeFlag[edgeCount] = 1;
597	}
598	if (edgeFlag[edgeCount] > 0) {
599	glEdgeFlag (GL_TRUE);
600	} else {
601	glEdgeFlag (GL_FALSE);
602	}
603	glNormal3d (normals[edgeCount].x(),
604	normals[edgeCount].y(),
605	normals[edgeCount].z());
606	glVertex3d (vertex[edgeCount].x(),
607	vertex[edgeCount].y(),
608	vertex[edgeCount].z());
609	}
610	// HepPolyhedron produces triangles too; in that case add an extra
611	// vertex identical to first...
612	if (n == 3) {
613	edgeCount = 3;
614	normals[edgeCount] = normals[0];
615	vertex[edgeCount] = vertex[0];
616	edgeFlag[edgeCount] = -1;
617	glEdgeFlag (GL_FALSE);
618	glNormal3d (normals[edgeCount].x(),
619	normals[edgeCount].y(),
620	normals[edgeCount].z());
621	glVertex3d (vertex[edgeCount].x(),
622	vertex[edgeCount].y(),
623	vertex[edgeCount].z());
624	}
625	// Trap situation where number of edges is > 4...
626	if (n > 4) {
627	G4cerr <<
628	"G4OpenGLSceneHandler::AddPrimitive(G4Polyhedron): WARNING";
629	G4PhysicalVolumeModel* pPVModel =
630	dynamic_cast<G4PhysicalVolumeModel*>(fpModel);
631	if (pPVModel) {
632	G4VPhysicalVolume* pCurrentPV = pPVModel->GetCurrentPV();
633	G4LogicalVolume* pCurrentLV = pPVModel->GetCurrentLV();
634	G4cerr <<
635	"\n Volume " << pCurrentPV->GetName() <<
636	", Solid " << pCurrentLV->GetSolid()->GetName() <<
637	" (" << pCurrentLV->GetSolid()->GetEntityType();
638	}
639	G4cerr<<
640	"\n G4Polyhedron facet with " << n << " edges" << G4endl;
641	}
642
643	// Do it all over again (twice) for hlr...
644	if (drawing_style == G4ViewParameters::hlr \|\|
645	drawing_style == G4ViewParameters::hlhsr) {
646
647	glEnd (); // Placed here to balance glBegin above, allowing GL
648	// state changes below, then glBegin again. Avoids
649	// having glBegin/End pairs inside loop in the more
650	// usual case of no hidden line removal.
651
652	// Lighting disabled unless otherwise requested
653	glDisable (GL_LIGHTING);
654
655	// Draw through stencil...
656	glStencilFunc (GL_EQUAL, 0, 1);
657	glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
658	if (drawing_style == G4ViewParameters::hlhsr) {
659	if (!fProcessing2D) glEnable (GL_LIGHTING);
660	}
661	glEnable (GL_DEPTH_TEST);
662	glDepthFunc (GL_LEQUAL);
663	if (materialColour[3] < 1.) {
664	// Transparent...
665	glDepthMask (0); // Make depth buffer read-only.
666	glDisable (GL_CULL_FACE);
667	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
668	} else {
669	// Opaque...
670	glDepthMask (1); // Make depth buffer writable (default).
671	if (clipping) {
672	glDisable (GL_CULL_FACE);
673	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
674	} else {
675	glEnable (GL_CULL_FACE);
676	glCullFace (GL_BACK);
677	glPolygonMode (GL_FRONT, GL_FILL);
678	}
679	}
680	GLfloat* painting_colour;
681	if (drawing_style == G4ViewParameters::hlr) {
682	if (materialColour[3] < 1.) {
683	// Transparent - don't paint...
684	goto end_of_drawing_through_stencil;
685	}
686	painting_colour = clear_colour;
687	} else { // drawing_style == G4ViewParameters::hlhsr
688	painting_colour = materialColour;
689	}
690	if (materialColour[3] < 1.) {
691	// Transparent...
692	glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, painting_colour);
693	} else {
694	// Opaque...
695	glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, painting_colour);
696	}
697	glColor4fv (painting_colour);
698	glBegin (GL_QUADS);
699	for (int edgeCount = 0; edgeCount < 4; ++edgeCount) {
700	if (edgeFlag[edgeCount] > 0) {
701	glEdgeFlag (GL_TRUE);
702	} else {
703	glEdgeFlag (GL_FALSE);
704	}
705	glNormal3d (normals[edgeCount].x(),
706	normals[edgeCount].y(),
707	normals[edgeCount].z());
708	glVertex3d (vertex[edgeCount].x(),
709	vertex[edgeCount].y(),
710	vertex[edgeCount].z());
711	}
712	glEnd ();
713	end_of_drawing_through_stencil:
714
715	// and once more to reset the stencil bits...
716	glStencilFunc (GL_ALWAYS, 0, 1);
717	glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT);
718	glDepthFunc (GL_LEQUAL); // to make sure line gets drawn.
719	if (materialColour[3] < 1.) {
720	// Transparent...
721	glDisable (GL_CULL_FACE);
722	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
723	} else {
724	// Opaque...
725	if (clipping) {
726	glDisable (GL_CULL_FACE);
727	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
728	} else {
729	glEnable (GL_CULL_FACE);
730	glCullFace (GL_BACK);
731	glPolygonMode (GL_FRONT, GL_LINE);
732	}
733	}
734	glDisable (GL_LIGHTING);
735	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
736	glBegin (GL_QUADS);
737	for (int edgeCount = 0; edgeCount < 4; ++edgeCount) {
738	if (edgeFlag[edgeCount] > 0) {
739	glEdgeFlag (GL_TRUE);
740	} else {
741	glEdgeFlag (GL_FALSE);
742	}
743	glNormal3d (normals[edgeCount].x(),
744	normals[edgeCount].y(),
745	normals[edgeCount].z());
746	glVertex3d (vertex[edgeCount].x(),
747	vertex[edgeCount].y(),
748	vertex[edgeCount].z());
749	}
750	glEnd ();
751	glDepthFunc (GL_LEQUAL); // Revert for next facet.
752	glBegin (GL_QUADS); // Ready for next facet. GL
753	// says it ignores incomplete
754	// quadrilaterals, so final empty
755	// glBegin/End sequence should be OK.
756	}
757	} while (notLastFace);
758
759	glEnd ();
760	glDisable (GL_STENCIL_TEST); // Revert to default for next primitive.
761	glDepthMask (1); // Revert to default for next primitive.
762	glDisable (GL_LIGHTING); // Revert to default for next primitive.
763	}
764
765	//Method for handling G4NURBS objects for drawing solids.
766	//Knots and Ctrl Pnts MUST be arrays of GLfloats.
767	void G4OpenGLSceneHandler::AddPrimitive (const G4NURBS& nurb) {
768
769	// Loads G4Atts for picking...
770	if (fpViewer->GetViewParameters().IsPicking()) {
771	G4AttHolder* holder = new G4AttHolder;
772	LoadAtts(nurb, holder);
773	fPickMap[fPickName] = holder;
774	}
775
776	GLUnurbsObj *gl_nurb;
777	gl_nurb = gluNewNurbsRenderer ();
778
779	GLfloat u_knot_array, u_knot_array_ptr;
780	u_knot_array = u_knot_array_ptr = new GLfloat [nurb.GetnbrKnots(G4NURBS::U)];
781	G4NURBS::KnotsIterator u_iterator (nurb, G4NURBS::U);
782	while (u_iterator.pick (u_knot_array_ptr++)){}
783
784	GLfloat v_knot_array, v_knot_array_ptr;
785	v_knot_array = v_knot_array_ptr = new GLfloat [nurb.GetnbrKnots(G4NURBS::V)];
786	G4NURBS::KnotsIterator v_iterator (nurb, G4NURBS::V);
787	while (v_iterator.pick (v_knot_array_ptr++)){}
788
789	GLfloat ctrl_pnt_array, ctrl_pnt_array_ptr;
790	ctrl_pnt_array = ctrl_pnt_array_ptr =
791	new GLfloat [nurb.GettotalnbrCtrlPts () * G4NURBS::NofC];
792	G4NURBS::CtrlPtsCoordsIterator c_p_iterator (nurb);
793	while (c_p_iterator.pick (ctrl_pnt_array_ptr++)){}
794
795	// Get vis attributes - pick up defaults if none.
796	const G4VisAttributes* pVA =
797	fpViewer -> GetApplicableVisAttributes (nurb.GetVisAttributes ());
798
799	// Get view parameters that the user can force through the vis
800	// attributes, thereby over-riding the current view parameter.
801	G4ViewParameters::DrawingStyle drawing_style = GetDrawingStyle (pVA);
802	//G4bool isAuxEdgeVisible = GetAuxEdgeVisible (pVA);
803
804	//Get colour, etc..
805	const G4Colour& c = pVA -> GetColour ();
806
807	switch (drawing_style) {
808
809	case (G4ViewParameters::hlhsr):
810	// G4cout << "Hidden line removal not implememented in G4OpenGL.\n"
811	// << "Using hidden surface removal." << G4endl;
812	case (G4ViewParameters::hsr):
813	{
814	if (!fProcessing2D) glEnable (GL_LIGHTING);
815	glEnable (GL_DEPTH_TEST);
816	glEnable (GL_AUTO_NORMAL);
817	glEnable (GL_NORMALIZE);
818	gluNurbsProperty (gl_nurb, GLU_DISPLAY_MODE, GLU_FILL);
819	gluNurbsProperty (gl_nurb, GLU_SAMPLING_TOLERANCE, 50.0);
820	GLfloat materialColour [4];
821	materialColour [0] = c.GetRed ();
822	materialColour [1] = c.GetGreen ();
823	materialColour [2] = c.GetBlue ();
824	materialColour [3] = 1.0; // = c.GetAlpha () for transparency -
825	// but see complication in
826	// AddPrimitive(const G4Polyhedron&).
827	glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, materialColour);
828	break;
829	}
830	case (G4ViewParameters::hlr):
831	// G4cout << "Hidden line removal not implememented in G4OpenGL.\n"
832	// << "Using wireframe." << G4endl;
833	case (G4ViewParameters::wireframe):
834	default:
835	glDisable (GL_LIGHTING);
836	// glDisable (GL_DEPTH_TEST);
837	glEnable (GL_DEPTH_TEST);
838	glDisable (GL_AUTO_NORMAL);
839	glDisable (GL_NORMALIZE);
840	gluNurbsProperty (gl_nurb, GLU_DISPLAY_MODE, GLU_OUTLINE_POLYGON);
841	gluNurbsProperty (gl_nurb, GLU_SAMPLING_TOLERANCE, 50.0);
842	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
843	break;
844	}
845
846	gluBeginSurface (gl_nurb);
847	G4int u_stride = 4;
848	G4int v_stride = nurb.GetnbrCtrlPts(G4NURBS::U) * 4;
849
850	gluNurbsSurface (gl_nurb,
851	nurb.GetnbrKnots (G4NURBS::U), (GLfloat*)u_knot_array,
852	nurb.GetnbrKnots (G4NURBS::V), (GLfloat*)v_knot_array,
853	u_stride,
854	v_stride,
855	ctrl_pnt_array,
856	nurb.GetUorder (),
857	nurb.GetVorder (),
858	GL_MAP2_VERTEX_4);
859
860	gluEndSurface (gl_nurb);
861
862	delete [] u_knot_array; // These should be allocated with smart allocators
863	delete [] v_knot_array; // to avoid memory explosion.
864	delete [] ctrl_pnt_array;
865
866	gluDeleteNurbsRenderer (gl_nurb);
867	}
868
869	void G4OpenGLSceneHandler::AddCompound(const G4VTrajectory& traj) {
870	G4VSceneHandler::AddCompound(traj); // For now.
871	}
872
873	void G4OpenGLSceneHandler::AddCompound(const G4VHit& hit) {
874	G4VSceneHandler::AddCompound(hit); // For now.
875	}
876
877	#endif

Note: See TracBrowser for help on using the repository browser.

Download in other formats: