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source: GTP/trunk/Lib/Geom/shared/GeoTool/src/GeoMeshView.cpp @ 2324

Revision 2324, 32.9 KB checked in by gumbau, 18 years ago (diff)

Line
1	#include "GeoMeshView.h"
2	#include <VertexData.h>
3
4	using namespace Geometry;
5	using namespace std;
6
7	//-------------------------------------------------------------------------
8	// Handle events.
9	//-------------------------------------------------------------------------
10	int GeoMeshView::handle(int event)
11	{
12	int key;
13	int button;
14	int x;
15	int y;
16
17	if (geoMesh != NULL)
18	{
19	draw();
20	}
21
22	switch(event)
23	{
24	case fltk::KEY:
25	case fltk::PUSH:
26
27	button = fltk::event_key();
28	mMouseX = fltk::event_x();
29	mMouseY = fltk::event_y();
30
31	return 1;
32
33	case fltk::DRAG:
34
35	button = fltk::event_key();
36	x = fltk::event_x();
37	y = fltk::event_y();
38
39
40	switch (button)
41	{
42	// Button 1 Pushed.
43	case 1:
44
45	if (x > mMouseX)
46	{
47	if (mPan)
48	{
49	xshift = xshift + 0.01;
50	}
51	else
52	{
53	hAng = hAng + (x - mMouseX);
54	}
55	}
56	else
57	{
58	if (x < mMouseX)
59	{
60	if (mPan)
61	{
62	xshift = xshift - 0.01;
63	}
64	else
65	{
66	hAng = hAng - (mMouseX - x);
67	}
68	}
69	}
70
71	if (y > mMouseY)
72	{
73	if (mPan)
74	{
75	yshift = yshift - 0.01;
76	}
77	else
78	{
79	vAng = vAng + (y - mMouseY);
80	}
81	}
82	else
83	{
84	if (y < mMouseY)
85	{
86	if (mPan)
87	{
88	yshift = yshift + 0.01;
89	}
90	else
91	{
92	vAng = vAng - (mMouseY - y);
93	}
94	}
95	}
96
97	hAng = float(int(hAng) % 360);
98	vAng = float(int(vAng) % 360);
99
100	mMouseX = x;
101	mMouseY = y;
102
103	draw();
104
105	return 1;
106
107	// Button 3 pushed.
108	case 2:
109	case 3:
110
111	if (y > mSizeY)
112	{
113	size++;
114	}
115	else
116	{
117	if (y < mSizeY)
118	{
119	size--;
120	}
121	}
122
123	mSizeY = y;
124
125	draw();
126
127	return 1;
128
129	}
130
131	case fltk::MOUSEWHEEL:
132
133	size = size + fltk::event_dy();
134	draw();
135	return 1;
136	}
137
138	return fltk::GlWindow::handle(event);
139	}
140
141	//---------------------------------------------------------------------------
142	// Get the number of frames per second.
143	//---------------------------------------------------------------------------
144	size_t GeoMeshView::getFPS()
145	{
146	return mFPS;
147	}
148
149	//---------------------------------------------------------------------------
150	// Calculate the number of frames per second.
151	//---------------------------------------------------------------------------
152	void GeoMeshView::calcFPS()
153	{
154	double duration;
155	clock_t finish_time;
156
157	// Gets the time.
158	finish_time = clock();
159
160	// Calc the duration respect the start time.
161	duration = (double)((finish_time - mStartTime) / CLOCKS_PER_SEC);
162
163	// Increments the number of frames per second.
164	mFPS++;
165
166	// If a second have passed.
167	if (duration >= 1.0)
168	{
169	// Repaint the FPS.
170	mGeoMeshViewUI->refreshFPS(mFPS);
171
172	mFPS = 0;
173	mStartTime = clock();
174	}
175	}
176
177	//-------------------------------------------------------------------------
178	// Enable color strips.
179	//-------------------------------------------------------------------------
180	void GeoMeshView::enableColorStrips()
181	{
182	colorStripsFlag = true;
183	}
184
185	//-------------------------------------------------------------------------
186	// Disable color strips.
187	//-------------------------------------------------------------------------
188	void GeoMeshView::disableColorStrips()
189	{
190	colorStripsFlag = false;
191	}
192
193	//-------------------------------------------------------------------------
194	// Gets the color strips state.
195	//-------------------------------------------------------------------------
196	bool GeoMeshView::getColorStrips()
197	{
198	return colorStripsFlag;
199	}
200
201	//-------------------------------------------------------------------------
202	// Set the color to the submesh sumbmeshIndex
203	//-------------------------------------------------------------------------
204	void GeoMeshView::setSubMeshSelected(int submeshIndex)
205	{
206	mSubMeshSelected = submeshIndex;
207	}
208
209	//-------------------------------------------------------------------------
210	// Sets the leaves submesh index.
211	//-------------------------------------------------------------------------
212	void GeoMeshView::setLeavesSubMesh(int submeshIndex)
213	{
214	leavesSubMesh = submeshIndex;
215	}
216
217	//-------------------------------------------------------------------------
218	// Gets the leaves submesh index.
219	//-------------------------------------------------------------------------
220	int GeoMeshView::getLeavesSubMesh()
221	{
222	return leavesSubMesh;
223	}
224
225	//-------------------------------------------------------------------------
226	// Set the list of strip colors.
227	//-------------------------------------------------------------------------
228	void GeoMeshView::setStripColors()
229	{
230	SubMesh *geosubmesh;
231
232	// Free memory of the strip colors array.
233	for (int submesh = 0; submesh < mStripColorsCount; submesh++)
234	{
235	delete []mStripColors[submesh];
236	}
237
238	delete []mStripColors;
239
240	// Initialize the Colors array.
241	mStripColors = new ColorElement*[geoMesh->mSubMeshCount];
242
243	// Count the total number of strips y the submeshes.
244	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
245	{
246	// Gets the actual submesh.
247	geosubmesh = &geoMesh->mSubMesh[submesh];
248
249	if (geosubmesh->mType == GEO_TRIANGLE_STRIPS)
250	{
251	mStripColors[submesh] = new ColorElement[geosubmesh->mStripCount];
252	}
253	else
254	{
255	mStripColors[submesh] = NULL;
256	}
257	}
258
259	// Sets random colors to each strip.
260	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
261	{
262	// Gets the actual submesh.
263	geosubmesh = &geoMesh->mSubMesh[submesh];
264
265	if (geosubmesh->mType == GEO_TRIANGLE_STRIPS)
266	{
267	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
268	{
269	mStripColors[submesh][strip].r = (0.6 * rand() + 0.4 * (float)RAND_MAX)/((float)RAND_MAX);
270	mStripColors[submesh][strip].g = (0.6 * rand() + 0.4 * (float)RAND_MAX)/((float)RAND_MAX);
271	mStripColors[submesh][strip].b = (0.6 * rand() + 0.4 * (float)RAND_MAX)/((float)RAND_MAX);
272	}
273	}
274	}
275
276	// Sets the submesh count.
277	mStripColorsCount = geoMesh->mSubMeshCount;
278	}
279
280	//-------------------------------------------------------------------------
281	// Get the bounding box of the object.
282	//-------------------------------------------------------------------------
283	void GeoMeshView::getBoundingBox()
284	{
285	float cx;
286	float cy;
287	float cz;
288	float scale;
289
290	xMax = geoMesh->mMeshBounds.maxX;
291	yMax = geoMesh->mMeshBounds.maxY;
292	zMax = geoMesh->mMeshBounds.maxZ;
293	xMin = geoMesh->mMeshBounds.minX;
294	yMin = geoMesh->mMeshBounds.minY;
295	zMin = geoMesh->mMeshBounds.minZ;
296	scale = geoMesh->mMeshBounds.scaleFactor;
297
298	// Calculate center of the model.
299	cx = (xMax + xMin) / 2.0f;
300	cy = (yMax + yMin) / 2.0f;
301	cz = (zMax + zMin) / 2.0f;
302
303	xMax -= cx;
304	yMax -= cy;
305	zMax -= cz;
306	xMin -= cx;
307	yMin -= cy;
308	zMin -= cz;
309
310	xMax *= scale;
311	yMax *= scale;
312	zMax *= scale;
313	xMin *= scale;
314	yMin *= scale;
315	zMin *= scale;
316	}
317
318	//-------------------------------------------------------------------------
319	// Constructor.
320	//-------------------------------------------------------------------------
321	GeoMeshView::GeoMeshView( int x,
322	int y,
323	int w,
324	int h,
325	const char *l,
326	GeoMeshViewUI *geoMeshViewUI)
327	: fltk::GlWindow(x,y,w,h,l)
328	{
329	mStripColors = NULL;
330	mSharedPosArray = NULL;
331	mSharedNorArray = NULL;
332	mSharedTexCoordArray = NULL;
333	mPosArray = NULL;
334	mNorArray = NULL;
335	mTexCoordArray = NULL;
336	mIndexArray = NULL;
337	vAng = 0.0;
338	hAng = 0.0;
339	size = 0.0;
340	mSizeY = 0;
341	xshift = 0.0;
342	yshift = 0.0;
343	geoMesh = 0;
344	mRotate = true;
345	mPan = false;
346	mBBox = true;
347	mAxes = true;
348	mLodStrip = false;
349	mLodTree = false;
350	mIdVisualList = 0;
351	mSubMeshCount = 0;
352	mStripColorsCount = 0;
353
354	// Initialize the model view.
355	deactiveWire();
356	deactiveSolid();
357	activeRotate();
358	deactiveCW();
359	activeCCW();
360
361	// Initialize start time for FPS.
362	mStartTime = clock();
363
364	// Cross Reference.
365	mGeoMeshViewUI = geoMeshViewUI;
366	current_texture = 0;
367
368	current_texture_submesh = NULL;
369	use_texture_mapping = true;
370	}
371
372	// The color used for the edges of the bounding cube.
373	#define CUBECOLOR 255,255,255,255
374
375	/* Draw a colored cube */
376	#define ALPHA 0.5
377
378	//-------------------------------------------------------------------------
379	// Sets the Mesh to display.
380	//-------------------------------------------------------------------------
381	void GeoMeshView::setMesh(Mesh *geomesh)
382	{
383	GLfloat white_color[] = {1.0f,1.0f,1.0f,1.0f};
384
385	this->geoMesh = geomesh;
386	mSubMeshSelected = -1;
387	leavesSubMesh = -1;
388	mScaleFactor = geomesh->mMeshBounds.scaleFactor;
389
390	// Gets boundings of mesh.
391	getBoundingBox();
392
393	// Refresh vertices to the vertex array.
394	refreshVertices(geomesh);
395
396	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white_color);
397
398	if (current_texture_submesh)
399	{
400	delete [] current_texture_submesh;
401	}
402
403	current_texture_submesh = new GLuint[getSubMeshCount()];
404
405	for (int i = 0; i < getSubMeshCount(); i++)
406	{
407	current_texture_submesh[i] = 0;
408
409	LoadTextureSubMesh(i, mMeshTexFiles[i].c_str());
410	}
411	}
412
413	//-------------------------------------------------------------------------
414	// Refresh vertices to the vertex array.
415	//-------------------------------------------------------------------------
416	void GeoMeshView::refreshVertices(Mesh *geomesh)
417	{
418	SubMesh *geosubmesh;
419	VertexBuffer *vertex_buffer;
420
421	// If the vertex array exists.
422	if (mSubMeshCount > 0)
423	{
424	for (int submesh = 0; submesh < mSubMeshCount; submesh++)
425	{
426	delete [] mPosArray[submesh];
427	delete [] mNorArray[submesh];
428	delete [] mIndexArray[submesh];
429	delete [] mTexCoordArray[submesh];
430	}
431
432	delete [] mSharedPosArray;
433	delete [] mSharedNorArray;
434	delete [] mSharedTexCoordArray;
435	delete [] mPosArray;
436	delete [] mNorArray;
437	delete [] mIndexArray;
438	}
439
440	// If there is shared vertex.
441	if (geomesh->mVertexBuffer != NULL)
442	{
443	vertex_buffer = geomesh->mVertexBuffer;
444
445	// Allocate memory.
446	mSharedPosArray = new GLfloat[vertex_buffer->mVertexCount * 3];
447	mSharedNorArray = new GLfloat[vertex_buffer->mVertexCount * 3];
448
449	if (vertex_buffer->mTexCoords)
450	{
451	mSharedTexCoordArray = new GLfloat[vertex_buffer->mVertexCount * 2];
452	}
453	else
454	{
455	mSharedTexCoordArray = NULL;
456	}
457
458	for (int vertex = 0; vertex < vertex_buffer->mVertexCount; vertex++)
459	{
460	mSharedPosArray[3 * vertex] = vertex_buffer->mPosition[vertex].x;
461	mSharedPosArray[(3 * vertex) + 1] = vertex_buffer->mPosition[vertex].y;
462	mSharedPosArray[(3 * vertex) + 2] = vertex_buffer->mPosition[vertex].z;
463
464	mSharedNorArray[3 * vertex] = vertex_buffer->mNormal[vertex].x;
465	mSharedNorArray[(3 * vertex) + 1] = vertex_buffer->mNormal[vertex].y;
466	mSharedNorArray[(3 * vertex) + 2] = vertex_buffer->mNormal[vertex].z;
467
468	if (vertex_buffer->mTexCoords)
469	{
470	mSharedTexCoordArray[2 * vertex] = vertex_buffer->
471	mTexCoords[vertex].x;
472
473	mSharedTexCoordArray[(2 * vertex) + 1] = vertex_buffer->
474	mTexCoords[vertex].y;
475	}
476	}
477	}
478
479	// Build the arrays of vertices and indices.
480	mPosArray = new GLfloat*[geomesh->mSubMeshCount];
481	mNorArray = new GLfloat*[geomesh->mSubMeshCount];
482	mTexCoordArray = new GLfloat*[geomesh->mSubMeshCount];
483	mIndexArray = new GLuint*[geomesh->mSubMeshCount];
484
485	// For each submesh.
486	for (int submesh = 0; submesh < geomesh->mSubMeshCount; submesh++)
487	{
488	// Gets the actual submesh.
489	geosubmesh = &geomesh->mSubMesh[submesh];
490
491	// Allocate memory for index array of the actual submesh.
492	mIndexArray[submesh] = new GLuint[geosubmesh->mIndexCount];
493
494	// Gets the indices of the actual submesh.
495	for (int index = 0; index < geosubmesh->mIndexCount; index++)
496	{
497	mIndexArray[submesh][index] = geosubmesh->mIndex[index];
498	}
499
500	// If the submesh is NOT shared vertex.
501	if (!geosubmesh->mSharedVertexBuffer)
502	{
503	vertex_buffer = geosubmesh->mVertexBuffer;
504
505	// Allocate memory for vertices of the actual submesh.
506	mPosArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 3];
507	mNorArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 3];
508	mTexCoordArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 2];
509
510	// For each one of the vertex.
511	for (int vertex = 0; vertex < vertex_buffer->mVertexCount; vertex++)
512	{
513	mPosArray[submesh][3 * vertex] = vertex_buffer->mPosition[vertex].x;
514	mPosArray[submesh][(3 * vertex) + 1] = vertex_buffer->mPosition[vertex].y;
515	mPosArray[submesh][(3 * vertex) + 2] = vertex_buffer->mPosition[vertex].z;
516
517	mNorArray[submesh][3 * vertex] = vertex_buffer->mNormal[vertex].x;
518	mNorArray[submesh][(3 * vertex) + 1] = vertex_buffer->mNormal[vertex].y;
519	mNorArray[submesh][(3 * vertex) + 2] = vertex_buffer->mNormal[vertex].z;
520
521	mTexCoordArray[submesh][2 * vertex] = vertex_buffer->mTexCoords[vertex].x;
522	mTexCoordArray[submesh][(2 * vertex) + 1] = vertex_buffer->mTexCoords[vertex].y;
523	}// End for each vertex.
524	}
525	// If the submesh is shared vertex.
526	else
527	{
528	mPosArray[submesh] = NULL;
529	mNorArray[submesh] = NULL;
530	mTexCoordArray[submesh] = NULL;
531	}
532
533	}// End for each submesh.
534
535	mSubMeshCount = geoMesh->mSubMeshCount;
536	}
537
538	//-------------------------------------------------------------------------
539	// Gets the triangle count of the current lod.
540	//-------------------------------------------------------------------------
541	size_t GeoMeshView::getLodStripsTriangleCount()
542	{
543	// For each strip.
544	// MultiIndexData *dataInterface = lodStripsLib->dataRetrievalInterface;
545	/* IndexData *dataInterface = lodStripsLib->dataRetrievalInterface;
546	size_t triangle_count = dataInterface->GetNumValidIndices() - 2;
547
548	return triangle_count;*/
549
550	return lodStripsLib->GetCurrentTriangleCount();
551	}
552
553	//-------------------------------------------------------------------------
554	// Repaint the Mesh.
555	//-------------------------------------------------------------------------
556	void GeoMeshView::drawGeoMesh(bool paintWire)
557	{
558	SubMesh *geosubmesh;
559	bool submesh_selected;
560
561	if (geoMesh)
562	{
563	if (mLodStrip)
564	{
565	drawLodStrip();
566	}
567	else if (mLodTree)
568	{
569	drawLodTree();
570	}
571	else
572	{
573	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
574	{
575	// Gets the actual submesh.
576	geosubmesh = &geoMesh->mSubMesh[submesh];
577
578	if (geosubmesh->mType == GEO_TRIANGLE_LIST)
579	{
580	if (mSubMeshSelected == submesh)
581	{
582	submesh_selected = true;
583	}
584	else
585	{
586	submesh_selected = false;
587	}
588
589	// Draw the actual submesh in triangle list.
590	drawTriangleList(submesh,submesh_selected,paintWire);
591	}
592	else
593	{
594	// Draw the actual submesh in triangle strip.
595	drawTriangleStrip(submesh);
596	}
597	}
598	}
599	}
600	}// End drawGeoMesh.
601
602	//-------------------------------------------------------------------------
603	// Paint eah strip separately.
604	//-------------------------------------------------------------------------
605	void GeoMeshView::drawTriangleStrip(int submesh)
606	{
607	SubMesh *geosubmesh;
608	Index position;
609	Vector3 vector3;
610	Vector2 vector2;
611	float x,y,z;
612	float r,g,b;
613	Index *index;
614	Index *indexBegin;
615	Index *indexEnd;
616	int color_index;
617
618	color_index = 0;
619
620	// Gets the actual submesh.
621	geosubmesh = &geoMesh->mSubMesh[submesh];
622
623	// bind current texture to use
624	bool usetex = SetTextureRenderingState(submesh);
625
626	// For each one of the strips.
627	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
628	{
629	// Paint the current strip.
630
631	// First index of the strip.
632	indexBegin = geosubmesh->mStrip[strip];
633
634	// If the strips is not the first.
635	//if (strip != 0)
636	//{
637	// indexBegin++;
638	//}
639
640	int size= 0;
641	// If is the final strip
642	if (strip == (geosubmesh->mStripCount - 1))
643	{
644	// The end of the index array.
645	indexEnd = &geosubmesh->mIndex[geosubmesh->mIndexCount];
646	size= indexEnd - indexBegin;
647	}
648	else
649	{
650	// The beginning of the next strip.
651	indexEnd = geosubmesh->mStrip[strip + 1];
652
653	for (index = indexBegin; index < indexEnd; index++)
654	{
655	size++;
656	}
657	// Remove degenerated
658	//indexEnd--;
659	}
660
661	int i;
662	i = 0;
663
664	if (getColorStrips())
665	{
666	// Gets the color of the strip.
667	r = mStripColors[submesh][color_index].r;
668	g = mStripColors[submesh][color_index].g;
669	b = mStripColors[submesh][color_index].b;
670
671	// Change to the next color.
672	color_index++;
673
674	// Paint a new color.
675	glColor3f(r,g,b);
676	GLfloat color[] = {r,g,b,1.0f};
677	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color);
678	}
679
680	//VERTEX ARRAYS
681	glEnableClientState(GL_VERTEX_ARRAY);
682	glEnableClientState(GL_NORMAL_ARRAY);
683
684	if (usetex)
685	{
686	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
687	}
688	else
689	{
690	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
691	}
692
693	glVertexPointer(3, GL_FLOAT, 0, geosubmesh->mVertexBuffer->mPosition);
694	glNormalPointer(GL_FLOAT, 0, geosubmesh->mVertexBuffer->mNormal);
695
696	if (usetex)
697	{
698	glTexCoordPointer(2, GL_FLOAT, 0, geosubmesh->mVertexBuffer->mTexCoords);
699	}
700
701	glDrawElements( GL_TRIANGLE_STRIP,
702	size,
703	GL_UNSIGNED_INT,
704	indexBegin);
705
706	if (submesh == leavesSubMesh)
707	{
708	glDisable(GL_ALPHA_TEST);
709	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
710	}
711	}
712	}//End drawTriangleStrip.
713
714	//-------------------------------------------------------------------------
715	// Paint the array of indices.
716	//-------------------------------------------------------------------------
717	void GeoMeshView::drawTriangleList( int submesh,
718	bool selectedSubMesh,
719	bool paintWire)
720	{
721	SubMesh *geosubmesh;
722	Index position;
723	Vector3 vector3;
724	float x,y,z;
725	int idx_offset;
726	int vrt_offset;
727
728	// Index offset.
729	idx_offset = 0;
730
731	// Vertex offset.
732	vrt_offset = 0;
733
734	// Gets the actual submesh.
735	geosubmesh = &geoMesh->mSubMesh[submesh];
736
737	// bind current texture to use
738	bool usetex = SetTextureRenderingState(submesh);
739
740	// If wire is not selected.
741	if (!paintWire)
742	{
743	// If a mesh is selected.
744	if (selectedSubMesh)
745	{
746	glColor3d(1.0,0.0,0.0);
747	GLfloat red[] = {1.0f,0.0f,0.0f,1.0f};
748	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,red);
749	}
750	// If is a tree.
751	else if (leavesSubMesh >= 0)
752	{
753	glColor3d(1.0, 0.5, 0.5);
754	GLfloat brown[] = {1.0f,0.5f,0.5f,1.0f};
755	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,brown);
756
757	// For each index of the strip.
758	if (submesh == leavesSubMesh)
759	{
760	if (!usetex)
761	{
762	glColor3d(0.0,1.0,0.0);
763	GLfloat green[] = {0.0f,1.0f,0.0f,1.0f};
764	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,green);
765	}
766	else
767	{
768	glEnable(GL_ALPHA_TEST);
769	glAlphaFunc(GL_GREATER,0.5f);
770	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
771	}
772	}
773	}
774	// If is NOT a tree.
775	else
776	{
777	// Set white color to the object.
778	glColor3d(1.0, 1.0, 1.0);
779	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
780	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
781	}
782	}
783
784	if (usetex)
785	{
786	glColor4f(1.0f,1.0f,1.0f,1.0f);
787	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
788	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
789	}
790
791	// Enable arrays.
792	glEnableClientState(GL_VERTEX_ARRAY);
793	glEnableClientState(GL_NORMAL_ARRAY);
794	if (usetex)
795	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
796	else
797	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
798
799	// If the submesh is shared vertex.
800	if (geosubmesh->mSharedVertexBuffer)
801	{
802	glVertexPointer(3, GL_FLOAT, 0, mSharedPosArray);
803	glNormalPointer(GL_FLOAT, 0, mSharedNorArray);
804	if (usetex)
805	glTexCoordPointer(2, GL_FLOAT, 0, mSharedTexCoordArray);
806	}
807	else
808	{
809	glVertexPointer(3, GL_FLOAT, 0, mPosArray[submesh]);
810	glNormalPointer(GL_FLOAT, 0, mNorArray[submesh]);
811	if (usetex)
812	glTexCoordPointer(2, GL_FLOAT, 0, mTexCoordArray[submesh]);
813	}
814
815	glDrawElements( GL_TRIANGLES,
816	geosubmesh->mIndexCount,
817	GL_UNSIGNED_INT,
818
819	mIndexArray[submesh]);
820
821	if (submesh==leavesSubMesh)
822	{
823	glDisable(GL_ALPHA_TEST);
824	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
825	}
826
827	}//End drawTriangleList
828
829	//-------------------------------------------------------------------------
830	// Paint lodstrip object.
831	//-------------------------------------------------------------------------
832	void GeoMeshView::drawLodStrip()
833	{
834	SubMesh *geosubmesh;
835	Index position;
836	Vector3 vector3;
837	Vector2 vector2;
838	float x,y,z;
839	float r,g,b;
840	int color_index;
841	int current_strip;
842
843	// Initialize current strip.
844	current_strip = 0;
845
846	// For each submesh.
847	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
848	{
849	// bind current texture to use
850	bool usetex = SetTextureRenderingState(submesh);
851
852	color_index = 0;
853
854	// Gets the actual submesh.
855	geosubmesh = &geoMesh->mSubMesh[submesh];
856
857	// For each one of the strips.
858	int indices_to_render = lodStripsLib->GetValidIndexCount(submesh);
859
860	glBegin(GL_TRIANGLE_STRIP);
861
862	for ( int index = 0;
863	index < mGeoMeshViewUI->lod_index_data->indexCount[submesh];
864	index ++)
865	{
866	position = mGeoMeshViewUI->lod_index_data->indices[submesh][index];
867
868	// Gets the vertex normal.
869	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
870
871	x = vector3[0];
872	y = vector3[1];
873	z = vector3[2];
874
875	// Sets the vertex normal.
876	glNormal3f(x,y,z);
877
878	// set the texture coordinates if needed
879	if (usetex)
880	{
881	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
882	x = vector2[0];
883	y = vector2[1];
884
885	glTexCoord2f(x,y);
886	}
887
888	// Gets the vertex coordinates.
889	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
890
891	x = vector3[0];
892	y = vector3[1];
893	z = vector3[2];
894
895	// Sets the vertex position.
896	glVertex3f(x,y,z);
897	}
898	glEnd();
899
900	}
901
902	}//End drawTriangleStrip.
903
904	//-------------------------------------------------------------------------
905	// Paint lodtree object.
906	//-------------------------------------------------------------------------
907	void GeoMeshView::drawLodTree()
908	{
909	SubMesh *geosubmesh;
910	Index position;
911	Vector3 vector3;
912	Vector2 vector2;
913	float x,y,z;
914	float r,g,b;
915	int color_index;
916	int current_strip;
917
918	// Initialize current strip.
919	current_strip = 0;
920
921	// DRAW THE TRUNK AS A LODSTRIP OBJECT
922	// For each submesh.
923	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
924	{
925	if (submesh == lodTreeLib->GetLeavesSubMesh())
926	{
927	continue;
928	}
929
930	// bind current texture to use
931	bool usetex = SetTextureRenderingState(submesh);
932
933	color_index = 0;
934
935	// Gets the actual submesh.
936	geosubmesh = &geoMesh->mSubMesh[submesh];
937
938	// For each one of the strips.
939	int indices_to_render = lodTreeLib->GetValidTrunkIndexCount(submesh);
940
941	glBegin(GL_TRIANGLE_STRIP);
942
943	for ( int index = 0;
944	index < mGeoMeshViewUI->lod_index_data->indexCount[submesh];
945	index ++)
946	{
947	position = mGeoMeshViewUI->lod_index_data->indices[submesh][index];
948
949	// Gets the vertex normal.
950	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
951
952	x = vector3[0];
953	y = vector3[1];
954	z = vector3[2];
955
956	// Sets the vertex normal.
957	glNormal3f(x,y,z);
958
959	// set the texture coordinates if needed
960	if (usetex)
961	{
962	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
963	x = vector2[0];
964	y = vector2[1];
965	glTexCoord2f(x,y);
966	}
967
968	// Gets the vertex coordinates.
969	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
970
971	x = vector3[0];
972	y = vector3[1];
973	z = vector3[2];
974
975	// Sets the vertex position.
976	glVertex3f(x,y,z);
977	}
978	glEnd();
979	}
980
981	// DRAW THE LEAVES AS A TRIANGLE SOUP
982	// bind current texture to use
983	bool usetex = SetTextureRenderingState(leavesSubMesh);
984
985	glEnable(GL_ALPHA_TEST);
986	glAlphaFunc(GL_GREATER,0.5f);
987	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
988
989	glBegin(GL_TRIANGLES);
990
991	SubMesh & foliageSubMesh = geoMesh->mSubMesh[lodTreeLib->GetLeavesSubMesh()];
992	Vector3 auxv;
993
994	for ( int j = 0;
995	j < mGeoMeshViewUI->lod_index_data->
996	indexCount[lodTreeLib->GetLeavesSubMesh()];
997	j++)
998	{
999	int k = mGeoMeshViewUI->lod_index_data->
1000	indices[lodTreeLib->GetLeavesSubMesh()][j];
1001
1002	if (usetex)
1003	{
1004	Vector2 tc = foliageSubMesh.mVertexBuffer->mTexCoords[k];
1005	glTexCoord2f(tc.x,tc.y);
1006	}
1007
1008	auxv = foliageSubMesh.mVertexBuffer->mNormal[k];
1009
1010	glNormal3f(auxv.x,auxv.y,auxv.z);
1011
1012	auxv = foliageSubMesh.mVertexBuffer->mPosition[k];
1013
1014	glVertex3f(auxv.x,auxv.y,auxv.z);
1015	}
1016
1017	glEnd();
1018
1019	glColor3f(1,1,1);
1020	glDisable(GL_ALPHA_TEST);
1021	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
1022	}
1023
1024	//-------------------------------------------------------------------------
1025	// Sets the lodstripslibrary object.
1026	//-------------------------------------------------------------------------
1027	void GeoMeshView::setLodStripsLibrary(LodStripsLibrary *lodstrips)
1028	{
1029	lodStripsLib = lodstrips;
1030	activeLodStrip();
1031	}
1032
1033	//-------------------------------------------------------------------------
1034	// Sets the lodtreeslibrary object.
1035	//-------------------------------------------------------------------------
1036	void GeoMeshView::setLodTreesLibrary(LodTreeLibrary *lodtrees)
1037	{
1038	lodTreeLib = lodtrees;
1039	activeLodTree();
1040	}
1041
1042	//-------------------------------------------------------------------------
1043	// Change de Level of detail of the object.
1044	//-------------------------------------------------------------------------
1045	void GeoMeshView::GoToLod_LodStrip(float lod)
1046	{
1047	if (mLodStrip)
1048	{
1049	lodStripsLib->GoToLod(lod);
1050	}
1051
1052	if (mLodTree)
1053	{
1054	lodTreeLib->GoToTrunkLod(lod);
1055	}
1056
1057	draw();
1058	}
1059
1060	//-------------------------------------------------------------------------
1061	// Change de Level of detail of the object.
1062	//-------------------------------------------------------------------------
1063	void GeoMeshView::GoToLod_LodTree(float lod)
1064	{
1065	if (mLodTree)
1066	{
1067	lodTreeLib->GoToFoliageLod(lod);
1068	}
1069
1070	draw();
1071	}
1072
1073	//-------------------------------------------------------------------------
1074	// Draw axes.
1075	//-------------------------------------------------------------------------
1076	void GeoMeshView::drawAxes()
1077	{
1078	float max;
1079
1080	max = xMax;
1081
1082	if (yMax > max)
1083	{
1084	max = yMax;
1085	}
1086
1087	if (zMax > max)
1088	{
1089	max = zMax;
1090	}
1091
1092	glDisable(GL_LIGHTING);
1093	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1094	glDisable(GL_CULL_FACE);
1095
1096	// Set white color to the object.
1097	glColor3d(1.0, 0.0, 0.0);
1098
1099	// X axis.
1100	glBegin(GL_LINES);
1101	glVertex3f(0.0f,0.0f,0.0f);
1102	glVertex3f(max,0.0f,0.0f);
1103	glEnd();
1104
1105	// Set white color to the object.
1106	glColor3d(0.0, 1.0, 0.0);
1107
1108	// Y axis.
1109	glBegin(GL_LINES);
1110	glVertex3f(0.0f,0.0f,0.0f);
1111	glVertex3f(0.0f,max,0.0f);
1112	glEnd();
1113
1114	// Set white color to the object.
1115	glColor3d(0.0, 0.0, 1.0);
1116
1117	// Z axis.
1118	glBegin(GL_LINES);
1119	glVertex3f(0.0f,0.0f,0.0f);
1120	glVertex3f(0.0f,0.0f,max);
1121	glEnd();
1122	}
1123
1124	//-------------------------------------------------------------------------
1125	// Draw bounding box.
1126	//-------------------------------------------------------------------------
1127	void GeoMeshView::drawBoundingBox()
1128	{
1129	glDisable(GL_LIGHTING);
1130	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1131	glDisable(GL_CULL_FACE);
1132
1133	// Set white color to the object.
1134	glColor3d(0.0, 0.0, 0.0);
1135
1136	glBegin(GL_QUADS);
1137	glVertex3f(xMin,yMin,zMin);
1138	glVertex3f(xMin,yMax,zMin);
1139	glVertex3f(xMax,yMax,zMin);
1140	glVertex3f(xMax,yMin,zMin);
1141
1142	glVertex3f(xMin,yMin,zMin);
1143	glVertex3f(xMin,yMax,zMin);
1144	glVertex3f(xMin,yMax,zMax);
1145	glVertex3f(xMin,yMin,zMax);
1146
1147	glVertex3f(xMax,yMin,zMin);
1148	glVertex3f(xMax,yMax,zMin);
1149	glVertex3f(xMax,yMax,zMax);
1150	glVertex3f(xMax,yMin,zMax);
1151
1152	glVertex3f(xMax,yMin,zMax);
1153	glVertex3f(xMax,yMax,zMax);
1154	glVertex3f(xMin,yMax,zMax);
1155	glVertex3f(xMin,yMin,zMax);
1156
1157	glVertex3f(xMin,yMin,zMax);
1158	glVertex3f(xMax,yMin,zMax);
1159	glVertex3f(xMax,yMin,zMin);
1160	glVertex3f(xMin,yMin,zMin);
1161
1162	glVertex3f(xMin,yMax,zMax);
1163	glVertex3f(xMax,yMax,zMax);
1164	glVertex3f(xMax,yMax,zMin);
1165	glVertex3f(xMin,yMax,zMin);
1166
1167	glEnd();
1168	}
1169
1170	//-------------------------------------------------------------------------
1171	// Draw the object in the window.
1172	//-------------------------------------------------------------------------
1173	void GeoMeshView::draw()
1174	{
1175	glMatrixMode(GL_PROJECTION);
1176	glLoadIdentity();
1177
1178	// Frustrum.
1179	glViewport(0,0,w(),h());
1180	gluPerspective(60,(float)w()/(float)h(),0.1,1000);
1181
1182	glMatrixMode(GL_MODELVIEW);
1183	glLoadIdentity();
1184
1185	glEnable(GL_BLEND);
1186	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1187
1188	GLfloat light_ambient[] = {0.3,0.3,0.3,1.0};
1189	GLfloat luzpos[] = {0.0,0.0,1.0,0.0};
1190	GLfloat luzcolor[] = {1.0,1.0,1.0,1.0};
1191
1192	// glLightModelfv(GL_LIGHT_MODEL_AMBIENT, light_ambient);
1193	glEnable(GL_LIGHT0);
1194	glLightfv(GL_LIGHT0, GL_POSITION, luzpos);
1195	glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
1196	glLightfv(GL_LIGHT0, GL_DIFFUSE, luzcolor);
1197	glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 1);
1198	glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0);
1199	glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0);
1200
1201	glEnable (GL_POLYGON_OFFSET_LINE);
1202	glPolygonOffset(-0.5,1);
1203	glEnable(GL_DEPTH_TEST);
1204	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
1205
1206	gluLookAt(0,0,2/mScaleFactor/ + size * 0.25, 0,0,0, 0,1,0);
1207
1208	glTranslatef(xshift,yshift,0);
1209	glRotatef(hAng,0,1,0);
1210	glRotatef(vAng,1,0,0);
1211	//glTranslatef(-xMed,-yMed,-zMed);
1212
1213	GLfloat color_blanco[] = {1.0f,1.0f,1.0f,1.0f};
1214
1215	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color_blanco);
1216
1217	glClearColor(0.3,0.3,0.3,0);
1218
1219	if ((geoMesh != NULL) && mAxes)
1220	{
1221	// Draw coordinates axes.
1222	drawAxes();
1223	}
1224
1225	if ((geoMesh != NULL) && mBBox)
1226	{
1227	// Draw bounding box.
1228	drawBoundingBox();
1229	}
1230
1231	// Set white color to the object.
1232	glColor3d(1.0, 1.0, 1.0);
1233
1234	if (mLighting)
1235	{
1236	glEnable(GL_LIGHTING);
1237	}
1238	else
1239	{
1240	glDisable(GL_LIGHTING);
1241	}
1242
1243	if (mCW)
1244	{
1245	glFrontFace(GL_CW);
1246	glEnable(GL_CULL_FACE);
1247	}
1248	else
1249	{
1250	if (mCCW)
1251	{
1252	glFrontFace(GL_CCW);
1253	glEnable(GL_CULL_FACE);
1254	}
1255	else
1256	{
1257	glDisable(GL_CULL_FACE);
1258	}
1259	}
1260
1261	if (mSolid)
1262	{
1263	enableColorStrips();
1264	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1265	drawGeoMesh(false);
1266	}
1267
1268	if (mWire)
1269	{
1270	disableColorStrips();
1271
1272	GLfloat color[4];
1273
1274	if (mSolid)
1275	{
1276	glColor3d(0.0, 0.0, 0.0);
1277	color[0] = 0.0f;
1278	color[1] = 0.0f;
1279	color[2] = 0.0f;
1280	color[3] = 1.0f;
1281	}
1282	else
1283	{
1284	glColor3d(1.0, 1.0, 1.0);
1285	color[0] = 1.0f;
1286	color[1] = 1.0f;
1287	color[2] = 1.0f;
1288	color[3] = 1.0f;
1289	}
1290
1291	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color);
1292
1293	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1294	drawGeoMesh(true);
1295	}
1296	else
1297	{
1298	if (!mSolid)
1299	{
1300	disableColorStrips();
1301	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1302	drawGeoMesh(false);
1303	}
1304	}
1305
1306	swap_buffers();
1307	}
1308
1309	#include <IL/ILUT.h>
1310
1311	void GeoMeshView::LoadTexture(const char *imgfile)
1312	{
1313	ilInit();
1314	ilutEnable(ILUT_OPENGL_CONV);
1315	ilutRenderer(ILUT_OPENGL);
1316
1317	current_texture = ilutGLLoadImage((const ILstring)imgfile);
1318
1319	// if (!current_texture)
1320	// {
1321	// fltk::alert("Error loading texture!");
1322	// }
1323
1324	ilShutDown();
1325	}
1326
1327	void GeoMeshView::LoadTextureSubMesh(int isubmesh, const char *imgfile)
1328	{
1329	ilInit();
1330	ilutEnable(ILUT_OPENGL_CONV);
1331	ilutRenderer(ILUT_OPENGL);
1332
1333	current_texture_submesh[isubmesh] = ilutGLLoadImage((const ILstring)imgfile);
1334
1335	// if (!current_texture_submesh[isubmesh])
1336	// {
1337	// fltk::alert("Error loading texture!");
1338	// }
1339
1340	ilShutDown();
1341	}
1342
1343	// Add texture file name to the list of texture files of mesh.
1344	void GeoMeshView::addTexFile(const char *imgfile)
1345	{
1346	mMeshTexFiles.push_back(string(imgfile));
1347	}
1348
1349	// Change texture file of a given submesh.
1350	void GeoMeshView::changeTexFile(int isubmesh, const char *imgfile)
1351	{
1352	mMeshTexFiles[isubmesh] = string(imgfile);
1353	}
1354
1355	void GeoMeshView::resetTextures(void)
1356	{
1357	// Clears texture files list.
1358	mMeshTexFiles.clear();
1359
1360	if (current_texture)
1361	{
1362	glDeleteTextures(1,&current_texture);
1363
1364	current_texture = 0;
1365	}
1366
1367	if (current_texture_submesh)
1368	{
1369	glDeleteTextures(getSubMeshCount(),current_texture_submesh);
1370
1371	for (int i = 0; i < getSubMeshCount(); i++)
1372	{
1373	current_texture_submesh[i] = 0;
1374	}
1375	}
1376	}
1377
1378	bool GeoMeshView::SetTextureRenderingState(int submesh)
1379	{
1380	GLuint usetex = 0;
1381
1382	if (use_texture_mapping)
1383	{
1384	if (current_texture_submesh[submesh])
1385	{
1386	usetex = current_texture_submesh[submesh];
1387	}
1388	else if (current_texture)
1389	{
1390	usetex = current_texture;
1391	}
1392	}
1393
1394	if (usetex)
1395	{
1396	glEnable(GL_TEXTURE_2D);
1397	}
1398	else
1399	{
1400	glDisable(GL_TEXTURE_2D);
1401	}
1402
1403	glBindTexture(GL_TEXTURE_2D,usetex);
1404
1405	return (usetex != 0);
1406	}
1407
1408	int GeoMeshView::findLeavesSubMesh(void)
1409	{
1410	for (int i = 0; i < geoMesh->mSubMeshCount; i++)
1411	{
1412	if (geoMesh->mSubMesh[i].mType == GEO_TRIANGLE_LIST)
1413	{
1414	return i;
1415	}
1416	}
1417
1418	return -1;
1419	}
1420

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