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source: trunk/source/visualization/OpenGL/src/G4OpenGLSceneHandler.cc @ 929

Last change on this file since 929 was 929, checked in by garnier, 15 years ago
juste pour sauver le boulot ....ne compile pas....
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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 1.54 2008/04/04 13:32:22 allison 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	#include "G4OpenGLSceneHandler.hh"
47	#include "G4OpenGLViewer.hh"
48	#include "G4OpenGLFontBaseStore.hh"
49	#include "G4OpenGLTransform3D.hh"
50	#include "G4Point3D.hh"
51	#include "G4Normal3D.hh"
52	#include "G4Transform3D.hh"
53	#include "G4Polyline.hh"
54	#include "G4Polymarker.hh"
55	#include "G4Text.hh"
56	#include "G4Circle.hh"
57	#include "G4Square.hh"
58	#include "G4VMarker.hh"
59	#include "G4Polyhedron.hh"
60	#include "G4VisAttributes.hh"
61	#include "G4PhysicalVolumeModel.hh"
62	#include "G4VPhysicalVolume.hh"
63	#include "G4LogicalVolume.hh"
64	#include "G4VSolid.hh"
65	#include "G4Scene.hh"
66	#include "G4VisExtent.hh"
67	#include "G4AttHolder.hh"
68
69	G4OpenGLSceneHandler::G4OpenGLSceneHandler (G4VGraphicsSystem& system,
70	G4int id,
71	const G4String& name):
72	G4VSceneHandler (system, id, name),
73	fPickName(0),
74	fProcessing2D (false),
75	fProcessingPolymarker(false)
76	{}
77
78	G4OpenGLSceneHandler::~G4OpenGLSceneHandler ()
79	{
80	ClearStore ();
81	}
82
83	const GLubyte G4OpenGLSceneHandler::fStippleMaskHashed [128] = {
84	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
85	0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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	};
101
102	void G4OpenGLSceneHandler::ClearAndDestroyAtts()
103	{
104	std::map<GLuint, G4AttHolder*>::iterator i;
105	for (i = fPickMap.begin(); i != fPickMap.end(); ++i) delete i->second;
106	fPickMap.clear();
107	}
108
109	void G4OpenGLSceneHandler::PreAddSolid
110	(const G4Transform3D& objectTransformation,
111	const G4VisAttributes& visAttribs)
112	{
113	G4VSceneHandler::PreAddSolid (objectTransformation, visAttribs);
114	}
115
116	void G4OpenGLSceneHandler::BeginPrimitives
117	(const G4Transform3D& objectTransformation)
118	{
119	G4VSceneHandler::BeginPrimitives (objectTransformation);
120	}
121
122	void G4OpenGLSceneHandler::EndPrimitives ()
123	{
124	G4VSceneHandler::EndPrimitives ();
125	}
126
127	void G4OpenGLSceneHandler::BeginPrimitives2D
128	(const G4Transform3D& objectTransformation)
129	{
130	G4VSceneHandler::BeginPrimitives2D (objectTransformation);
131	fProcessing2D = true;
132	}
133
134	void G4OpenGLSceneHandler::EndPrimitives2D ()
135	{
136	fProcessing2D = false;
137	G4VSceneHandler::EndPrimitives2D ();
138	}
139
140	const G4Polyhedron* G4OpenGLSceneHandler::CreateSectionPolyhedron ()
141	{
142	// Clipping done in G4OpenGLViewer::SetView.
143	return 0;
144
145	// But...OpenGL no longer seems to reconstruct clipped edges, so,
146	// when the BooleanProcessor is up to it, abandon this and use
147	// generic clipping in G4VSceneHandler::CreateSectionPolyhedron...
148	// return G4VSceneHandler::CreateSectionPolyhedron();
149	}
150
151	const G4Polyhedron* G4OpenGLSceneHandler::CreateCutawayPolyhedron ()
152	{
153	// Cutaway done in G4OpenGLViewer::SetView.
154	return 0;
155
156	// But...if not, when the BooleanProcessor is up to it...
157	// return G4VSceneHandler::CreateCutawayPolyhedron();
158	}
159
160	void G4OpenGLSceneHandler::AddPrimitive (const G4Polyline& line)
161	{
162	G4int nPoints = line.size ();
163	if (nPoints <= 0) return;
164
165	// Loads G4Atts for picking...
166	if (fpViewer->GetViewParameters().IsPicking()) {
167	G4AttHolder* holder = new G4AttHolder;
168	LoadAtts(line, holder);
169	fPickMap[fPickName] = holder;
170	}
171
172	// Note: colour treated in sub-class.
173
174	if (fpViewer -> GetViewParameters ().IsMarkerNotHidden ())
175	glDisable (GL_DEPTH_TEST);
176	else {glEnable (GL_DEPTH_TEST); glDepthFunc (GL_LESS);}
177
178	glDisable (GL_LIGHTING);
179
180	// Get vis attributes - pick up defaults if none.
181	const G4VisAttributes* pVA =
182	fpViewer -> GetApplicableVisAttributes (line.GetVisAttributes ());
183
184	G4double lineWidth = GetLineWidth(pVA);
185	glLineWidth(lineWidth);
186
187	glBegin (GL_LINE_STRIP);
188	for (G4int iPoint = 0; iPoint < nPoints; iPoint++) {
189	G4double x, y, z;
190	x = line[iPoint].x();
191	y = line[iPoint].y();
192	z = line[iPoint].z();
193	glVertex3d (x, y, z);
194	}
195	glEnd ();
196	}
197
198	void G4OpenGLSceneHandler::AddPrimitive (const G4Polymarker& polymarker)
199	{
200	G4int nPoints = polymarker.size ();
201	if (nPoints <= 0) return;
202
203	fProcessingPolymarker = true;
204
205	// Loads G4Atts for picking...
206	if (fpViewer->GetViewParameters().IsPicking()) {
207	G4AttHolder* holder = new G4AttHolder;
208	LoadAtts(polymarker, holder);
209	fPickMap[fPickName] = holder;
210	}
211
212	switch (polymarker.GetMarkerType()) {
213	default:
214	case G4Polymarker::dots:
215	{
216	for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
217	G4Circle dot (polymarker);
218	dot.SetPosition (polymarker[iPoint]);
219	dot.SetWorldSize (0.);
220	dot.SetScreenSize (0.1); // Very small circle.
221	G4OpenGLSceneHandler::AddPrimitive (dot);
222	}
223	}
224	break;
225	case G4Polymarker::circles:
226	{
227	for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
228	G4Circle circle (polymarker);
229	circle.SetPosition (polymarker[iPoint]);
230	G4OpenGLSceneHandler::AddPrimitive (circle);
231	}
232	}
233	break;
234	case G4Polymarker::squares:
235	{
236	for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
237	G4Square square (polymarker);
238	square.SetPosition (polymarker[iPoint]);
239	G4OpenGLSceneHandler::AddPrimitive (square);
240	}
241	}
242	break;
243	}
244
245	fProcessingPolymarker = false;
246	}
247
248	void G4OpenGLSceneHandler::AddPrimitive (const G4Text& text) {
249
250	// Loads G4Atts for picking...
251	if (fpViewer->GetViewParameters().IsPicking()) {
252	G4AttHolder* holder = new G4AttHolder;
253	LoadAtts(text, holder);
254	fPickMap[fPickName] = holder;
255	}
256
257	const G4Colour& c = GetTextColour (text); // Picks up default if none.
258	MarkerSizeType sizeType;
259	G4double size = GetMarkerSize (text, sizeType);
260	G4ThreeVector position (text.GetPosition ());
261	G4String textString = text.GetText();
262
263	G4int font_base = G4OpenGLFontBaseStore::GetFontBase(fpViewer,size);
264	if (font_base < 0) {
265	static G4int callCount = 0;
266	++callCount;
267	if (callCount <= 10 \|\| callCount%100 == 0) {
268	G4cout <<
269	"G4OpenGLSceneHandler::AddPrimitive (const G4Text&) call count "
270	<< callCount <<
271	"\n No fonts available."
272	"\n Called with text \""
273	<< text.GetText ()
274	<< "\"\n at " << position
275	<< ", size " << size
276	<< ", offsets " << text.GetXOffset () << ", " << text.GetYOffset ()
277	<< ", type " << G4int(sizeType)
278	<< ", colour " << c
279	<< G4endl;
280	}
281	return;
282	}
283	const char* textCString = textString.c_str();
284	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
285	glDisable (GL_DEPTH_TEST);
286	glDisable (GL_LIGHTING);
287
288	glRasterPos3d(position.x(),position.y(),position.z());
289	// No action on offset or layout at present.
290	glPushAttrib(GL_LIST_BIT);
291	glListBase(font_base);
292	glCallLists(strlen(textCString), GL_UNSIGNED_BYTE, (GLubyte *)textCString);
293	glPopAttrib();
294	}
295
296	void G4OpenGLSceneHandler::AddPrimitive (const G4Circle& circle) {
297	glEnable (GL_POINT_SMOOTH);
298	AddCircleSquare (circle, G4OpenGLBitMapStore::circle);
299	}
300
301	void G4OpenGLSceneHandler::AddPrimitive (const G4Square& square) {
302	glDisable (GL_POINT_SMOOTH);
303	AddCircleSquare (square, G4OpenGLBitMapStore::square);
304	}
305
306	void G4OpenGLSceneHandler::AddCircleSquare
307	(const G4VMarker& marker,
308	G4OpenGLBitMapStore::Shape shape) {
309
310	if (!fProcessingPolymarker) { // Polymarker has already loaded atts.
311	// Loads G4Atts for picking...
312	if (fpViewer->GetViewParameters().IsPicking()) {
313	G4AttHolder* holder = new G4AttHolder;
314	LoadAtts(marker, holder);
315	fPickMap[fPickName] = holder;
316	}
317	}
318
319	// Note: colour treated in sub-class.
320
321	if (fpViewer -> GetViewParameters ().IsMarkerNotHidden ())
322	glDisable (GL_DEPTH_TEST);
323	else {glEnable (GL_DEPTH_TEST); glDepthFunc (GL_LESS);}
324
325	glDisable (GL_LIGHTING);
326
327	// Get vis attributes - pick up defaults if none.
328	const G4VisAttributes* pVA =
329	fpViewer -> GetApplicableVisAttributes (marker.GetVisAttributes ());
330
331	G4double lineWidth = GetLineWidth(pVA);
332	glLineWidth(lineWidth);
333
334	G4VMarker::FillStyle style = marker.GetFillStyle();
335
336	G4bool filled = false;
337	static G4bool hashedWarned = false;
338
339	switch (style) {
340	case G4VMarker::noFill:
341	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
342	filled = false;
343	break;
344
345	case G4VMarker::hashed:
346	if (!hashedWarned) {
347	G4cout << "Hashed fill style in G4OpenGLSceneHandler."
348	<< "\n Not implemented. Using G4VMarker::filled."
349	<< G4endl;
350	hashedWarned = true;
351	}
352	// Maybe use
353	//glPolygonStipple (fStippleMaskHashed);
354	// Drop through to filled...
355
356	case G4VMarker::filled:
357	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
358	filled = true;
359	break;
360
361	}
362
363	// A few useful quantities...
364	G4Point3D centre = marker.GetPosition();
365	MarkerSizeType sizeType;
366	G4double size = GetMarkerSize(marker, sizeType);
367
368	// Draw...
369	/// if (sizeType == world) { // Size specified in world coordinates.
370	printf("G4OpenGLSceneHandler::AddCircleSquare world\n");
371	DrawXYPolygon (shape, size, centre, pVA);
372
373	// } else { // Size specified in screen (window) coordinates.
374	// printf("G4OpenGLSceneHandler::AddCircleSquare bitmap\n");
375
376	// glRasterPos3d(centre.x(),centre.y(),centre.z());
377	// const GLubyte* marker =
378	// G4OpenGLBitMapStore::GetBitMap(shape, size, filled);
379	// glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
380	// glBitmap(GLsizei(size), GLsizei(size), size/2., size/2., 0., 0., marker);
381	// }
382	}
383
384	void G4OpenGLSceneHandler::DrawXYPolygon
385	(G4OpenGLBitMapStore::Shape shape,
386	G4double size,
387	const G4Point3D& centre,
388	const G4VisAttributes* pApplicableVisAtts)
389	{
390	G4int nSides;
391	G4double startPhi;
392	if (shape == G4OpenGLBitMapStore::circle) {
393	nSides = GetNoOfSides(pApplicableVisAtts);
394	startPhi = 0.;
395	} else {
396	nSides = 4;
397	startPhi = -pi / 4.;
398	}
399
400	const G4Vector3D& viewpointDirection =
401	fpViewer -> GetViewParameters().GetViewpointDirection();
402	const G4Vector3D& up = fpViewer->GetViewParameters().GetUpVector();
403	const G4double dPhi = twopi / nSides;
404	const G4double radius = size / 2.;
405	G4Vector3D start = radius * (up.cross(viewpointDirection)).unit();
406	G4double phi;
407	G4int i;
408
409	glBegin (GL_POLYGON);
410	for (i = 0, phi = startPhi; i < nSides; i++, phi += dPhi) {
411	G4Vector3D r = start; r.rotate(phi, viewpointDirection);
412	G4Vector3D p = centre + r;
413	glVertex3d (p.x(), p.y(), p.z());
414	}
415	glEnd ();
416	}
417
418	void G4OpenGLSceneHandler::AddPrimitive (const G4Scale& scale)
419	{
420	G4VSceneHandler::AddPrimitive(scale);
421	}
422
423	//Method for handling G4Polyhedron objects for drawing solids.
424	void G4OpenGLSceneHandler::AddPrimitive (const G4Polyhedron& polyhedron) {
425
426	// Assume all facets are planar convex quadrilaterals.
427	// Draw each facet individually
428
429	if (polyhedron.GetNoFacets() == 0) return;
430
431	// Loads G4Atts for picking...
432	if (fpViewer->GetViewParameters().IsPicking()) {
433	G4AttHolder* holder = new G4AttHolder;
434	LoadAtts(polyhedron, holder);
435	fPickMap[fPickName] = holder;
436	}
437
438	// Get vis attributes - pick up defaults if none.
439	const G4VisAttributes* pVA =
440	fpViewer -> GetApplicableVisAttributes (polyhedron.GetVisAttributes ());
441
442	// Get view parameters that the user can force through the vis
443	// attributes, thereby over-riding the current view parameter.
444	G4ViewParameters::DrawingStyle drawing_style = GetDrawingStyle (pVA);
445
446	//Get colour, etc...
447	G4bool transparency_enabled = true;
448	G4OpenGLViewer* pViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
449	if (pViewer) transparency_enabled = pViewer->transparency_enabled;
450	const G4Colour& c = pVA->GetColour();
451	GLfloat materialColour [4];
452	materialColour [0] = c.GetRed ();
453	materialColour [1] = c.GetGreen ();
454	materialColour [2] = c.GetBlue ();
455	if (transparency_enabled) {
456	materialColour [3] = c.GetAlpha ();
457	} else {
458	materialColour [3] = 1.;
459	}
460
461	G4double lineWidth = GetLineWidth(pVA);
462	glLineWidth(lineWidth);
463
464	GLfloat clear_colour[4];
465	glGetFloatv (GL_COLOR_CLEAR_VALUE, clear_colour);
466
467	G4bool isAuxEdgeVisible = GetAuxEdgeVisible (pVA);
468
469	G4bool clipping = pViewer->fVP.IsSection() \|\| pViewer->fVP.IsCutaway();
470
471	// Lighting disabled unless otherwise requested
472	glDisable (GL_LIGHTING);
473
474	switch (drawing_style) {
475	case (G4ViewParameters::hlhsr):
476	// Set up as for hidden line removal but paint polygon faces later...
477	case (G4ViewParameters::hlr):
478	glEnable (GL_STENCIL_TEST);
479	// The stencil buffer is cleared in G4OpenGLViewer::ClearView.
480	// The procedure below leaves it clear.
481	glStencilFunc (GL_ALWAYS, 0, 1);
482	glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT);
483	glEnable (GL_DEPTH_TEST);
484	glDepthFunc (GL_LEQUAL);
485	if (materialColour[3] < 1.) {
486	// Transparent...
487	glDisable (GL_CULL_FACE);
488	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
489	} else {
490	// Opaque...
491	if (clipping) {
492	glDisable (GL_CULL_FACE);
493	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
494	} else {
495	glEnable (GL_CULL_FACE);
496	glCullFace (GL_BACK);
497	glPolygonMode (GL_FRONT, GL_LINE);
498	}
499	}
500	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
501	break;
502	case (G4ViewParameters::hsr):
503	glEnable (GL_DEPTH_TEST);
504	glDepthFunc (GL_LEQUAL);
505	if (materialColour[3] < 1.) {
506	// Transparent...
507	glDepthMask (0); // Make depth buffer read-only.
508	glDisable (GL_CULL_FACE);
509	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
510	glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, materialColour);
511	} else {
512	// Opaque...
513	glDepthMask (1); // Make depth buffer writable (default).
514	if (clipping) {
515	glDisable (GL_CULL_FACE);
516	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
517	} else {
518	glEnable (GL_CULL_FACE);
519	glCullFace (GL_BACK);
520	glPolygonMode (GL_FRONT, GL_FILL);
521	}
522	glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, materialColour);
523	}
524	if (!fProcessing2D) glEnable (GL_LIGHTING);
525	break;
526	case (G4ViewParameters::wireframe):
527	default:
528	glEnable (GL_DEPTH_TEST);
529	glDepthFunc (GL_LEQUAL); //??? was GL_ALWAYS
530	glDisable (GL_CULL_FACE);
531	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
532	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
533	break;
534	}
535
536	//Loop through all the facets...
537	glBegin (GL_QUADS);
538	G4bool notLastFace;
539	do {
540
541	//First, find vertices, edgeflags and normals and note "not last facet"...
542	G4Point3D vertex[4];
543	G4int edgeFlag[4];
544	G4Normal3D normals[4];
545	G4int n;
546	notLastFace = polyhedron.GetNextFacet(n, vertex, edgeFlag, normals);
547
548	//Loop through the four edges of each G4Facet...
549	G4int edgeCount = 0;
550	for(edgeCount = 0; edgeCount < n; ++edgeCount) {
551	// Check to see if edge is visible or not...
552	if (isAuxEdgeVisible) {
553	edgeFlag[edgeCount] = 1;
554	}
555	if (edgeFlag[edgeCount] > 0) {
556	glEdgeFlag (GL_TRUE);
557	} else {
558	glEdgeFlag (GL_FALSE);
559	}
560	glNormal3d (normals[edgeCount].x(),
561	normals[edgeCount].y(),
562	normals[edgeCount].z());
563	glVertex3d (vertex[edgeCount].x(),
564	vertex[edgeCount].y(),
565	vertex[edgeCount].z());
566	}
567	// HepPolyhedron produces triangles too; in that case add an extra
568	// vertex identical to first...
569	if (n == 3) {
570	edgeCount = 3;
571	normals[edgeCount] = normals[0];
572	vertex[edgeCount] = vertex[0];
573	edgeFlag[edgeCount] = -1;
574	glEdgeFlag (GL_FALSE);
575	glNormal3d (normals[edgeCount].x(),
576	normals[edgeCount].y(),
577	normals[edgeCount].z());
578	glVertex3d (vertex[edgeCount].x(),
579	vertex[edgeCount].y(),
580	vertex[edgeCount].z());
581	}
582	// Trap situation where number of edges is > 4...
583	if (n > 4) {
584	G4cerr <<
585	"G4OpenGLSceneHandler::AddPrimitive(G4Polyhedron): WARNING";
586	G4PhysicalVolumeModel* pPVModel =
587	dynamic_cast<G4PhysicalVolumeModel*>(fpModel);
588	if (pPVModel) {
589	G4VPhysicalVolume* pCurrentPV = pPVModel->GetCurrentPV();
590	G4LogicalVolume* pCurrentLV = pPVModel->GetCurrentLV();
591	G4cerr <<
592	"\n Volume " << pCurrentPV->GetName() <<
593	", Solid " << pCurrentLV->GetSolid()->GetName() <<
594	" (" << pCurrentLV->GetSolid()->GetEntityType();
595	}
596	G4cerr<<
597	"\n G4Polyhedron facet with " << n << " edges" << G4endl;
598	}
599
600	// Do it all over again (twice) for hlr...
601	if (drawing_style == G4ViewParameters::hlr \|\|
602	drawing_style == G4ViewParameters::hlhsr) {
603
604	glEnd (); // Placed here to balance glBegin above, allowing GL
605	// state changes below, then glBegin again. Avoids
606	// having glBegin/End pairs inside loop in the more
607	// usual case of no hidden line removal.
608
609	// Lighting disabled unless otherwise requested
610	glDisable (GL_LIGHTING);
611
612	// Draw through stencil...
613	glStencilFunc (GL_EQUAL, 0, 1);
614	glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
615	if (drawing_style == G4ViewParameters::hlhsr) {
616	if (!fProcessing2D) glEnable (GL_LIGHTING);
617	}
618	glEnable (GL_DEPTH_TEST);
619	glDepthFunc (GL_LEQUAL);
620	if (materialColour[3] < 1.) {
621	// Transparent...
622	glDepthMask (0); // Make depth buffer read-only.
623	glDisable (GL_CULL_FACE);
624	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
625	} else {
626	// Opaque...
627	glDepthMask (1); // Make depth buffer writable (default).
628	if (clipping) {
629	glDisable (GL_CULL_FACE);
630	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
631	} else {
632	glEnable (GL_CULL_FACE);
633	glCullFace (GL_BACK);
634	glPolygonMode (GL_FRONT, GL_FILL);
635	}
636	}
637	GLfloat* painting_colour;
638	if (drawing_style == G4ViewParameters::hlr) {
639	if (materialColour[3] < 1.) {
640	// Transparent - don't paint...
641	goto end_of_drawing_through_stencil;
642	}
643	painting_colour = clear_colour;
644	} else { // drawing_style == G4ViewParameters::hlhsr
645	painting_colour = materialColour;
646	}
647	if (materialColour[3] < 1.) {
648	// Transparent...
649	glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, painting_colour);
650	} else {
651	// Opaque...
652	glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, painting_colour);
653	}
654	glColor4fv (painting_colour);
655	glBegin (GL_QUADS);
656	for (int edgeCount = 0; edgeCount < 4; ++edgeCount) {
657	if (edgeFlag[edgeCount] > 0) {
658	glEdgeFlag (GL_TRUE);
659	} else {
660	glEdgeFlag (GL_FALSE);
661	}
662	glNormal3d (normals[edgeCount].x(),
663	normals[edgeCount].y(),
664	normals[edgeCount].z());
665	glVertex3d (vertex[edgeCount].x(),
666	vertex[edgeCount].y(),
667	vertex[edgeCount].z());
668	}
669	glEnd ();
670	end_of_drawing_through_stencil:
671
672	// and once more to reset the stencil bits...
673	glStencilFunc (GL_ALWAYS, 0, 1);
674	glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT);
675	glDepthFunc (GL_LEQUAL); // to make sure line gets drawn.
676	if (materialColour[3] < 1.) {
677	// Transparent...
678	glDisable (GL_CULL_FACE);
679	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
680	} else {
681	// Opaque...
682	if (clipping) {
683	glDisable (GL_CULL_FACE);
684	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
685	} else {
686	glEnable (GL_CULL_FACE);
687	glCullFace (GL_BACK);
688	glPolygonMode (GL_FRONT, GL_LINE);
689	}
690	}
691	glDisable (GL_LIGHTING);
692	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
693	glBegin (GL_QUADS);
694	for (int edgeCount = 0; edgeCount < 4; ++edgeCount) {
695	if (edgeFlag[edgeCount] > 0) {
696	glEdgeFlag (GL_TRUE);
697	} else {
698	glEdgeFlag (GL_FALSE);
699	}
700	glNormal3d (normals[edgeCount].x(),
701	normals[edgeCount].y(),
702	normals[edgeCount].z());
703	glVertex3d (vertex[edgeCount].x(),
704	vertex[edgeCount].y(),
705	vertex[edgeCount].z());
706	}
707	glEnd ();
708	glDepthFunc (GL_LEQUAL); // Revert for next facet.
709	glBegin (GL_QUADS); // Ready for next facet. GL
710	// says it ignores incomplete
711	// quadrilaterals, so final empty
712	// glBegin/End sequence should be OK.
713	}
714	} while (notLastFace);
715
716	glEnd ();
717	glDisable (GL_STENCIL_TEST); // Revert to default for next primitive.
718	glDepthMask (1); // Revert to default for next primitive.
719	glDisable (GL_LIGHTING); // Revert to default for next primitive.
720	}
721
722	//Method for handling G4NURBS objects for drawing solids.
723	//Knots and Ctrl Pnts MUST be arrays of GLfloats.
724	void G4OpenGLSceneHandler::AddPrimitive (const G4NURBS& nurb) {
725
726	// Loads G4Atts for picking...
727	if (fpViewer->GetViewParameters().IsPicking()) {
728	G4AttHolder* holder = new G4AttHolder;
729	LoadAtts(nurb, holder);
730	fPickMap[fPickName] = holder;
731	}
732
733	GLUnurbsObj *gl_nurb;
734	gl_nurb = gluNewNurbsRenderer ();
735
736	GLfloat u_knot_array, u_knot_array_ptr;
737	u_knot_array = u_knot_array_ptr = new GLfloat [nurb.GetnbrKnots(G4NURBS::U)];
738	G4NURBS::KnotsIterator u_iterator (nurb, G4NURBS::U);
739	while (u_iterator.pick (u_knot_array_ptr++)){}
740
741	GLfloat v_knot_array, v_knot_array_ptr;
742	v_knot_array = v_knot_array_ptr = new GLfloat [nurb.GetnbrKnots(G4NURBS::V)];
743	G4NURBS::KnotsIterator v_iterator (nurb, G4NURBS::V);
744	while (v_iterator.pick (v_knot_array_ptr++)){}
745
746	GLfloat ctrl_pnt_array, ctrl_pnt_array_ptr;
747	ctrl_pnt_array = ctrl_pnt_array_ptr =
748	new GLfloat [nurb.GettotalnbrCtrlPts () * G4NURBS::NofC];
749	G4NURBS::CtrlPtsCoordsIterator c_p_iterator (nurb);
750	while (c_p_iterator.pick (ctrl_pnt_array_ptr++)){}
751
752	// Get vis attributes - pick up defaults if none.
753	const G4VisAttributes* pVA =
754	fpViewer -> GetApplicableVisAttributes (nurb.GetVisAttributes ());
755
756	// Get view parameters that the user can force through the vis
757	// attributes, thereby over-riding the current view parameter.
758	G4ViewParameters::DrawingStyle drawing_style = GetDrawingStyle (pVA);
759	//G4bool isAuxEdgeVisible = GetAuxEdgeVisible (pVA);
760
761	//Get colour, etc..
762	const G4Colour& c = pVA -> GetColour ();
763
764	switch (drawing_style) {
765
766	case (G4ViewParameters::hlhsr):
767	// G4cout << "Hidden line removal not implememented in G4OpenGL.\n"
768	// << "Using hidden surface removal." << G4endl;
769	case (G4ViewParameters::hsr):
770	{
771	if (!fProcessing2D) glEnable (GL_LIGHTING);
772	glEnable (GL_DEPTH_TEST);
773	glEnable (GL_AUTO_NORMAL);
774	glEnable (GL_NORMALIZE);
775	gluNurbsProperty (gl_nurb, GLU_DISPLAY_MODE, GLU_FILL);
776	gluNurbsProperty (gl_nurb, GLU_SAMPLING_TOLERANCE, 50.0);
777	GLfloat materialColour [4];
778	materialColour [0] = c.GetRed ();
779	materialColour [1] = c.GetGreen ();
780	materialColour [2] = c.GetBlue ();
781	materialColour [3] = 1.0; // = c.GetAlpha () for transparency -
782	// but see complication in
783	// AddPrimitive(const G4Polyhedron&).
784	glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, materialColour);
785	break;
786	}
787	case (G4ViewParameters::hlr):
788	// G4cout << "Hidden line removal not implememented in G4OpenGL.\n"
789	// << "Using wireframe." << G4endl;
790	case (G4ViewParameters::wireframe):
791	default:
792	glDisable (GL_LIGHTING);
793	// glDisable (GL_DEPTH_TEST);
794	glEnable (GL_DEPTH_TEST);
795	glDisable (GL_AUTO_NORMAL);
796	glDisable (GL_NORMALIZE);
797	gluNurbsProperty (gl_nurb, GLU_DISPLAY_MODE, GLU_OUTLINE_POLYGON);
798	gluNurbsProperty (gl_nurb, GLU_SAMPLING_TOLERANCE, 50.0);
799	glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ());
800	break;
801	}
802
803	gluBeginSurface (gl_nurb);
804	G4int u_stride = 4;
805	G4int v_stride = nurb.GetnbrCtrlPts(G4NURBS::U) * 4;
806
807	gluNurbsSurface (gl_nurb,
808	nurb.GetnbrKnots (G4NURBS::U), (GLfloat*)u_knot_array,
809	nurb.GetnbrKnots (G4NURBS::V), (GLfloat*)v_knot_array,
810	u_stride,
811	v_stride,
812	ctrl_pnt_array,
813	nurb.GetUorder (),
814	nurb.GetVorder (),
815	GL_MAP2_VERTEX_4);
816
817	gluEndSurface (gl_nurb);
818
819	delete [] u_knot_array; // These should be allocated with smart allocators
820	delete [] v_knot_array; // to avoid memory explosion.
821	delete [] ctrl_pnt_array;
822
823	gluDeleteNurbsRenderer (gl_nurb);
824	}
825
826	void G4OpenGLSceneHandler::AddCompound(const G4VTrajectory& traj) {
827	G4VSceneHandler::AddCompound(traj); // For now.
828	}
829
830	void G4OpenGLSceneHandler::AddCompound(const G4VHit& hit) {
831	G4VSceneHandler::AddCompound(hit); // For now.
832	}
833
834	#endif

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