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source: GTP/trunk/Lib/Geom/shared/GeoTool/src/GeoMeshView.cpp @ 995

Revision 995, 30.9 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	// Hanle 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_state();
36	x = fltk::event_x();
37	y = fltk::event_y();
38
39	switch (button)
40	{
41	// Button 1 Pushed.
42	case 0x01100000:
43
44	if (x > mMouseX)
45	{
46	if (mPan)
47	{
48	xshift = xshift + (x - mMouseX);
49	}
50	else
51	{
52	hAng = hAng + (x - mMouseX);
53	}
54	}
55	else
56	{
57	if (x < mMouseX)
58	{
59	if (mPan)
60	{
61	xshift = xshift - (mMouseX - x);
62	}
63	else
64	{
65	hAng = hAng - (mMouseX - x);
66	}
67	}
68	}
69
70	if (y > mMouseY)
71	{
72	if (mPan)
73	{
74	yshift = yshift - (y - mMouseY);
75	}
76	else
77	{
78	vAng = vAng + (y - mMouseY);
79	}
80	}
81	else
82	{
83	if (y < mMouseY)
84	{
85	if (mPan)
86	{
87	yshift = yshift + (mMouseY - y);
88	}
89	else
90	{
91	vAng = vAng - (mMouseY - y);
92	}
93	}
94	}
95
96	hAng = float(int(hAng) % 360);
97	vAng = float(int(vAng) % 360);
98
99	mMouseX = x;
100	mMouseY = y;
101
102	draw();
103
104	return 1;
105
106	case 0x04100000:
107
108	if (y > mSizeY)
109	{
110	size++;
111	}
112	else
113	{
114	if (y < mSizeY)
115	{
116	size--;
117	}
118	}
119
120	mSizeY = y;
121
122	draw();
123
124	return 1;
125
126	}
127
128	case fltk::MOUSEWHEEL:
129
130	size = size + fltk::event_dy();
131	draw();
132	return 1;
133	}
134
135	return fltk::GlWindow::handle(event);
136	}
137
138	//---------------------------------------------------------------------------
139	// Get the number of frames per second.
140	//---------------------------------------------------------------------------
141	size_t GeoMeshView::getFPS()
142	{
143	return mFPS;
144	}
145
146	//---------------------------------------------------------------------------
147	// Calculate the number of frames per second.
148	//---------------------------------------------------------------------------
149	void GeoMeshView::calcFPS()
150	{
151	double duration;
152	clock_t finish_time;
153
154	// Gets the time.
155	finish_time = clock();
156
157	// Calc the duration respect the start time.
158	duration = (double)((finish_time - mStartTime) / CLOCKS_PER_SEC);
159
160	// Increments the number of frames per second.
161	mFPS++;
162
163	// If a second have passed.
164	if (duration >= 1.0)
165	{
166	// Repaint the FPS.
167	mGeoMeshViewUI->refreshFPS(mFPS);
168
169	mFPS = 0;
170	mStartTime = clock();
171	}
172	}
173
174	//---------------------------------------------------------------------------
175	// Enable color strips.
176	//---------------------------------------------------------------------------
177	void GeoMeshView::enableColorStrips()
178	{
179	colorStripsFlag = true;
180	}
181
182	//---------------------------------------------------------------------------
183	// Disable color strips.
184	//---------------------------------------------------------------------------
185	void GeoMeshView::disableColorStrips()
186	{
187	colorStripsFlag = false;
188	}
189
190	//---------------------------------------------------------------------------
191	// Gets the color strips state.
192	//---------------------------------------------------------------------------
193	bool GeoMeshView::getColorStrips()
194	{
195	return colorStripsFlag;
196	}
197
198	//---------------------------------------------------------------------------
199	// Set the color to the submesh sumbmeshIndex
200	//---------------------------------------------------------------------------
201	void GeoMeshView::setSubMeshSelected(int submeshIndex)
202	{
203	mSubMeshSelected = submeshIndex;
204	}
205
206	//---------------------------------------------------------------------------
207	// Sets the leaves submesh index.
208	//---------------------------------------------------------------------------
209	void GeoMeshView::setLeavesSubMesh(int submeshIndex)
210	{
211	leavesSubMesh = submeshIndex;
212	}
213
214	//---------------------------------------------------------------------------
215	// Gets the leaves submesh index.
216	//---------------------------------------------------------------------------
217	int GeoMeshView::getLeavesSubMesh()
218	{
219	return leavesSubMesh;
220	}
221
222	//---------------------------------------------------------------------------
223	// Set the list of strip colors.
224	//---------------------------------------------------------------------------
225	void GeoMeshView::setStripColors()
226	{
227	SubMesh *geosubmesh;
228
229	// Free memory of the strip colors array.
230	for (int submesh = 0; submesh < mStripColorsCount; submesh++)
231	{
232	delete []mStripColors[submesh];
233	}
234
235	delete []mStripColors;
236
237	// Initialize the Colors array.
238	mStripColors = new ColorElement*[geoMesh->mSubMeshCount];
239
240	// Count the total number of strips y the submeshes.
241	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
242	{
243	// Gets the actual submesh.
244	geosubmesh = &geoMesh->mSubMesh[submesh];
245
246	if (geosubmesh->mType == GEO_TRIANGLE_STRIPS)
247	{
248	mStripColors[submesh] = new ColorElement[geosubmesh->mStripCount];
249	}
250	else
251	{
252	mStripColors[submesh] = NULL;
253	}
254	}
255
256
257	// Sets random colors to each strip.
258	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
259	{
260	// Gets the actual submesh.
261	geosubmesh = &geoMesh->mSubMesh[submesh];
262
263	if (geosubmesh->mType == GEO_TRIANGLE_STRIPS)
264	{
265	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
266	{
267	mStripColors[submesh][strip].r = rand()/((float)RAND_MAX);
268	mStripColors[submesh][strip].g = rand()/((float)RAND_MAX);
269	mStripColors[submesh][strip].b = rand()/((float)RAND_MAX);
270	}
271	}
272	}
273
274	// Sets the submesh count.
275	mStripColorsCount = geoMesh->mSubMeshCount;
276	}
277
278	/*
279	//---------------------------------------------------------------------------
280	// Get the bounding box of the object.
281	//---------------------------------------------------------------------------
282	GeometryBounds GeoMeshView::getBoundingBox()
283	{
284	SubMesh *geosubmesh;
285	Index position;
286	Vector3 vector3;
287	GeometryBounds bounds;
288	float x,y,z;
289	float xMin,yMin,zMin;
290	float xMax,yMax,zMax;
291
292	// For each submesh.
293	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
294	{
295	// Gets the actual submesh.
296	geosubmesh = &geoMesh->mSubMesh[submesh];
297
298	// For each index of the strip.
299	for (int index = 0; index < geosubmesh->mIndexCount; index++)
300	{
301	position = geosubmesh->mIndex[index];
302
303	// Gets the vertex coordinates.
304	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
305
306	x = vector3[0];
307	y = vector3[1];
308	z = vector3[2];
309
310	// If is the first iteation.
311	if ((submesh == 0) && (index == 0))
312	{
313	xMin = xMax = x;
314	yMin = yMax = y;
315	zMin = zMax = z;
316	}
317	else
318	{
319	if (x < xMin)
320	{
321	xMin = x;
322	}
323	else if (x > xMax)
324	{
325	xMax = x;
326	}
327
328	if (y < yMin)
329	{
330	yMin = y;
331	}
332	else if (y > yMax)
333	{
334	yMax = y;
335	}
336
337	if (z < zMin)
338	{
339	zMin = z;
340	}
341	else if (z > zMax)
342	{
343	zMax = z;
344	}
345	}
346	}
347	}
348
349	xMed = (xMax + xMin) / 2;
350	yMed = (yMax + yMin) / 2;
351	zMed = (zMax + zMin) / 2;
352
353
354	if ((xMax - xMin) > (yMax - yMin))
355	{
356	if ((xMax - xMin) > (zMax - zMin))
357	{
358	mScaleFactor = xMax - xMin;
359	}
360	else
361	{
362	mScaleFactor = zMax - zMin;
363	}
364	}
365	else
366	{
367	if ((yMax - yMin) > (zMax - zMin))
368	{
369	mScaleFactor = yMax - yMin;
370	}
371	else
372	{
373	mScaleFactor = zMax - zMin;
374	}
375	}
376
377	// Set the bounds.
378	bounds.minx = xMin;
379	bounds.miny = yMin;
380	bounds.minz = zMin;
381	bounds.maxx = xMax;
382	bounds.maxy = yMax;
383	bounds.maxz = zMax;
384	bounds.radius = mScaleFactor;
385
386	return bounds;
387	}
388	*/
389
390	//---------------------------------------------------------------------------
391	// Constructor.
392	//---------------------------------------------------------------------------
393	GeoMeshView::GeoMeshView( int x,
394	int y,
395	int w,
396	int h,
397	const char *l,
398	GeoMeshViewUI *geoMeshViewUI)
399	: fltk::GlWindow(x,y,w,h,l)
400	{
401	mStripColors = NULL;
402	mSharedPosArray = NULL;
403	mSharedNorArray = NULL;
404	mSharedTexCoordArray= NULL;
405	mPosArray = NULL;
406	mNorArray = NULL;
407	mTexCoordArray = NULL;
408	mIndexArray = NULL;
409	vAng = 0.0;
410	hAng = 0.0;
411	size = 0.0;
412	mSizeY = 0;
413	xshift = 0.0;
414	yshift = 0.0;
415	geoMesh = 0;
416	mRotate = true;
417	mPan = false;
418	mLodStrip = false;
419	mLodTree = false;
420	mIdVisualList = 0;
421	mSubMeshCount = 0;
422	mStripColorsCount = 0;
423
424	// Initialize the model view.
425	deactiveWire();
426	deactiveSolid();
427	activeRotate();
428	deactiveCW();
429	activeCCW();
430
431	// Initialize start time for FPS.
432	mStartTime = clock();
433
434	// Cross Reference.
435	mGeoMeshViewUI = geoMeshViewUI;
436
437	current_texture = 0;
438	current_texture_submesh=NULL;
439	use_texture_mapping = true;
440	}
441
442	// The color used for the edges of the bounding cube.
443	#define CUBECOLOR 255,255,255,255
444
445	/* Draw a colored cube */
446	#define ALPHA 0.5
447
448	//---------------------------------------------------------------------------
449	// Sets the Mesh to display.
450	//---------------------------------------------------------------------------
451	void GeoMeshView::setMesh(Mesh *geomesh)
452	{
453	GLfloat color_blanco[] = {1.0f,1.0f,1.0f,1.0f};
454
455	this->geoMesh = geomesh;
456	mSubMeshSelected = -1;
457	leavesSubMesh = -1;
458	mScaleFactor = geomesh->mMeshBounds.scaleFactor;
459
460	// Refresh vertices to the vertex array.
461	refreshVertices(geomesh);
462
463	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color_blanco);
464
465	if (current_texture_submesh)
466	delete[] current_texture_submesh;
467	current_texture_submesh=new GLuint[getSubMeshCount()];
468	for (int i=0; i<getSubMeshCount(); i++)
469	current_texture_submesh[i]=0;
470	}
471
472	//---------------------------------------------------------------------------
473	// Refresh vertices to the vertex array.
474	//---------------------------------------------------------------------------
475	void GeoMeshView::refreshVertices(Mesh *geomesh)
476	{
477	SubMesh *geosubmesh;
478	VertexBuffer *vertex_buffer;
479
480	// If the vertex array exists.
481	if (mSubMeshCount > 0)
482	{
483	for (int submesh = 0; submesh < mSubMeshCount; submesh++)
484	{
485	delete [] mPosArray[submesh];
486	delete [] mNorArray[submesh];
487	delete [] mIndexArray[submesh];
488	delete [] mTexCoordArray[submesh];
489	}
490
491	delete [] mSharedPosArray;
492	delete [] mSharedNorArray;
493	delete [] mSharedTexCoordArray;
494	delete [] mPosArray;
495	delete [] mNorArray;
496	delete [] mIndexArray;
497	}
498
499	// If there is shared vertex.
500	if (geomesh->mVertexBuffer != NULL)
501	{
502	vertex_buffer = geomesh->mVertexBuffer;
503
504	// Allocate memory.
505	mSharedPosArray = new GLfloat[vertex_buffer->mVertexCount * 3];
506	mSharedNorArray = new GLfloat[vertex_buffer->mVertexCount * 3];
507	mSharedTexCoordArray = new GLfloat[vertex_buffer->mVertexCount * 2];
508
509	for (int vertex = 0; vertex < vertex_buffer->mVertexCount; vertex++)
510	{
511	mSharedPosArray[3 * vertex] = vertex_buffer->mPosition[vertex].x;
512	mSharedPosArray[(3 * vertex) + 1] = vertex_buffer->mPosition[vertex].y;
513	mSharedPosArray[(3 * vertex) + 2] = vertex_buffer->mPosition[vertex].z;
514
515	mSharedNorArray[3 * vertex] = vertex_buffer->mNormal[vertex].x;
516	mSharedNorArray[(3 * vertex) + 1] = vertex_buffer->mNormal[vertex].y;
517	mSharedNorArray[(3 * vertex) + 2] = vertex_buffer->mNormal[vertex].z;
518
519	mSharedTexCoordArray[2 * vertex] = vertex_buffer->mTexCoords[vertex].x;
520	mSharedTexCoordArray[(2 * vertex) + 1] = vertex_buffer->mTexCoords[vertex].y;
521	}
522	}
523
524	// Build the arrays of vertices and indices.
525	mPosArray = new GLfloat*[geomesh->mSubMeshCount];
526	mNorArray = new GLfloat*[geomesh->mSubMeshCount];
527	mTexCoordArray = new GLfloat*[geomesh->mSubMeshCount];
528	mIndexArray = new GLuint*[geomesh->mSubMeshCount];
529
530	// For each submesh.
531	for (int submesh = 0; submesh < geomesh->mSubMeshCount; submesh++)
532	{
533	// Gets the actual submesh.
534	geosubmesh = &geomesh->mSubMesh[submesh];
535
536	// Allocate memory for index array of the actual submesh.
537	mIndexArray[submesh] = new GLuint[geosubmesh->mIndexCount];
538
539	// Gets the indices of the actual submesh.
540	for (int index = 0; index < geosubmesh->mIndexCount; index++)
541	{
542	mIndexArray[submesh][index] = geosubmesh->mIndex[index];
543	}
544
545	// If the submesh is NOT shared vertex.
546	if (!geosubmesh->mSharedVertexBuffer)
547	{
548	vertex_buffer = geosubmesh->mVertexBuffer;
549
550	// Allocate memory for vertices of the actual submesh.
551	mPosArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 3];
552	mNorArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 3];
553	mTexCoordArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 2];
554
555	// For each one of the vertex.
556	for (int vertex = 0; vertex < vertex_buffer->mVertexCount; vertex++)
557	{
558	mPosArray[submesh][3 * vertex] = vertex_buffer->mPosition[vertex].x;
559	mPosArray[submesh][(3 * vertex) + 1] = vertex_buffer->mPosition[vertex].y;
560	mPosArray[submesh][(3 * vertex) + 2] = vertex_buffer->mPosition[vertex].z;
561
562	mNorArray[submesh][3 * vertex] = vertex_buffer->mNormal[vertex].x;
563	mNorArray[submesh][(3 * vertex) + 1] = vertex_buffer->mNormal[vertex].y;
564	mNorArray[submesh][(3 * vertex) + 2] = vertex_buffer->mNormal[vertex].z;
565
566	mTexCoordArray[submesh][2 * vertex] = vertex_buffer->mTexCoords[vertex].x;
567	mTexCoordArray[submesh][(2 * vertex) + 1] = vertex_buffer->mTexCoords[vertex].y;
568	}// End for each vertex.
569	}
570	// If the submesh is shared vertex.
571	else
572	{
573	mPosArray[submesh] = NULL;
574	mNorArray[submesh] = NULL;
575	mTexCoordArray[submesh] = NULL;
576	}
577
578	}// End for each submesh.
579
580	mSubMeshCount = geoMesh->mSubMeshCount;
581	}
582
583	//---------------------------------------------------------------------------
584	// Gets the triangle count of the current lod.
585	//---------------------------------------------------------------------------
586	size_t GeoMeshView::getLodStripsTriangleCount()
587	{
588	size_t triangle_count;
589
590	// Initialize triangle count.
591	triangle_count = 0;
592
593	// For each strip.
594	for (int strip = 0; strip < lodStripsLib->GetStripCount(); strip++)
595	{
596	triangle_count += lodStripsLib->mStrips[strip].size() - 2;
597	}
598
599	return triangle_count;
600	}
601
602	//---------------------------------------------------------------------------
603	// Repaint the Mesh.
604	//---------------------------------------------------------------------------
605	void GeoMeshView::drawGeoMesh(bool paintWire)
606	{
607	SubMesh *geosubmesh;
608	bool submesh_selected;
609
610	if (geoMesh)
611	{
612	if (mLodStrip)
613	{
614	drawLodStrip();
615	}
616	else if (mLodTree)
617	{
618	drawLodTree();
619	}
620	else
621	{
622	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
623	{
624	// Gets the actual submesh.
625	geosubmesh = &geoMesh->mSubMesh[submesh];
626
627	if (geosubmesh->mType == GEO_TRIANGLE_LIST)
628	{
629	if (mSubMeshSelected == submesh)
630	{
631	submesh_selected = true;
632	}
633	else
634	{
635	submesh_selected = false;
636	}
637
638	// Draw the actual submesh in triangle list.
639	drawTriangleList(submesh,submesh_selected,paintWire);
640	}
641	else
642	{
643	// Draw the actual submesh in triangle strip.
644	drawTriangleStrip(submesh);
645	}
646	}
647	}
648	}
649	}// End drawGeoMesh.
650
651	//---------------------------------------------------------------------------
652	// Paint eah strip separately.
653	//---------------------------------------------------------------------------
654	void GeoMeshView::drawTriangleStrip(int submesh)
655	{
656	SubMesh *geosubmesh;
657	Index position;
658	Vector3 vector3;
659	Vector2 vector2;
660	float x,y,z;
661	float r,g,b;
662	Index *index;
663	Index *indexBegin;
664	Index *indexEnd;
665	int color_index;
666
667	color_index = 0;
668
669	// Gets the actual submesh.
670	geosubmesh = &geoMesh->mSubMesh[submesh];
671
672	// bind current texture to use
673	GLuint usetex = 0;
674	if (use_texture_mapping)
675	{
676	if (current_texture_submesh[submesh])
677	usetex=current_texture_submesh[submesh];
678	else if (current_texture)
679	usetex=current_texture;
680	}
681	glBindTexture(GL_TEXTURE_2D,usetex);
682
683
684	// For each one of the strips.
685	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
686	{
687	// Paint the current strip.
688	glBegin(GL_TRIANGLE_STRIP);
689
690	// First index of the strip.
691	indexBegin = geosubmesh->mStrip[strip];
692
693	// If the strips is not the first.
694	//if (strip != 0)
695	//{
696	// indexBegin++;
697	//}
698
699	// If is the final strip
700	if (strip == (geosubmesh->mStripCount - 1))
701	{
702	// The end of the index array.
703	indexEnd = &geosubmesh->mIndex[geosubmesh->mIndexCount];
704	}
705	else
706	{
707	// The beginning of the next strip.
708	indexEnd = geosubmesh->mStrip[strip + 1];
709
710	// Remove degenerated
711	//indexEnd--;
712	}
713
714	int i;
715	i = 0;
716
717	if (getColorStrips())
718	{
719	// Gets the color of the strip.
720	r = mStripColors[submesh][color_index].r;
721	g = mStripColors[submesh][color_index].g;
722	b = mStripColors[submesh][color_index].b;
723
724	// Change to the next color.
725	color_index++;
726
727	// Paint a new color.
728	glColor3f(r,g,b);
729	}
730
731	// For each index of the strip.
732	for (index = indexBegin; index < indexEnd; index++)
733	{
734	position = indexBegin[i];
735
736	// Gets the vertex normal.
737	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
738
739	x = vector3[0];
740	y = vector3[1];
741	z = vector3[2];
742
743	// Sets the vertex normal.
744	glNormal3f(x,y,z);
745
746	// set the texture coordinates if needed
747	if (usetex)
748	{
749	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
750	x = vector2[0];
751	y = vector2[1];
752	glTexCoord2f(x,y);
753	}
754
755	// Gets the vertex coordinates.
756	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
757
758	x = vector3[0];
759	y = vector3[1];
760	z = vector3[2];
761
762
763	// Sets the vertex position.
764	glVertex3f(x,y,z);
765
766	// Increments i.
767	i++;
768	}
769
770	glEnd();
771
772	}
773
774	}//End drawTriangleStrip.
775
776	//---------------------------------------------------------------------------
777	// Paint the array of idices.
778	//---------------------------------------------------------------------------
779	void GeoMeshView::drawTriangleList( int submesh,
780	bool selectedSubMesh,
781	bool paintWire)
782	{
783	SubMesh *geosubmesh;
784	Index position;
785	Vector3 vector3;
786	float x,y,z;
787	int idx_offset;
788	int vrt_offset;
789
790	// Index offset.
791	idx_offset = 0;
792
793	// Vertex offset.
794	vrt_offset = 0;
795
796	// Gets the actual submesh.
797	geosubmesh = &geoMesh->mSubMesh[submesh];
798
799	// If wire is not selected.
800	if (!paintWire)
801	{
802	// If a mesh is selected.
803	if (selectedSubMesh)
804	{
805	glColor3d(1.0,0.0,0.0);
806	GLfloat red[] = {1.0f,0.0f,0.0f,1.0f};
807	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,red);
808	}
809	// If is a tree.
810	else if (leavesSubMesh >= 0)
811	{
812	glColor3d(1.0, 0.5, 0.5);
813	GLfloat brown[] = {1.0f,0.5f,0.5f,1.0f};
814	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,brown);
815
816	// For each index of the strip.
817	if (submesh == leavesSubMesh)
818	{
819	glColor3d(0.0,1.0,0.0);
820	GLfloat green[] = {0.0f,1.0f,0.0f,1.0f};
821	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,green);
822	}
823	}
824	// If is NOT a tree.
825	else
826	{
827	// Set white color to the object.
828	glColor3d(1.0, 1.0, 1.0);
829	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
830	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
831	}
832	}
833
834	// bind current texture to use
835	GLuint usetex = 0;
836	if (use_texture_mapping)
837	{
838	if (current_texture_submesh[submesh])
839	usetex=current_texture_submesh[submesh];
840	else if (current_texture)
841	usetex=current_texture;
842	}
843	glBindTexture(GL_TEXTURE_2D,usetex);
844
845	// Enable arrays.
846	glEnableClientState(GL_VERTEX_ARRAY);
847	glEnableClientState(GL_NORMAL_ARRAY);
848	if (usetex)
849	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
850	else
851	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
852
853	// If the submesh is shared vertex.
854	if (geosubmesh->mSharedVertexBuffer)
855	{
856	glVertexPointer(3, GL_FLOAT, 0, mSharedPosArray);
857	glNormalPointer(GL_FLOAT, 0, mSharedNorArray);
858	if (usetex)
859	glTexCoordPointer(2, GL_FLOAT, 0, mSharedTexCoordArray);
860	}
861	else
862	{
863	glVertexPointer(3, GL_FLOAT, 0, mPosArray[submesh]);
864	glNormalPointer(GL_FLOAT, 0, mNorArray[submesh]);
865	if (usetex)
866	glTexCoordPointer(2, GL_FLOAT, 0, mTexCoordArray[submesh]);
867	}
868
869	glDrawElements( GL_TRIANGLES,
870	geosubmesh->mIndexCount,
871	GL_UNSIGNED_INT,
872	mIndexArray[submesh]);
873
874	}//End drawTriangleList
875
876	//---------------------------------------------------------------------------
877	// Paint lodstrip object.
878	//---------------------------------------------------------------------------
879	void GeoMeshView::drawLodStrip()
880	{
881	SubMesh *geosubmesh;
882	Index position;
883	Vector3 vector3;
884	Vector2 vector2;
885	float x,y,z;
886	float r,g,b;
887	int color_index;
888	int current_strip;
889
890	// Initialize current strip.
891	current_strip = 0;
892
893	// For each submesh.
894	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
895	{
896	// bind current texture to use
897	GLuint usetex = 0;
898	if (use_texture_mapping)
899	{
900	if (current_texture_submesh[submesh])
901	usetex=current_texture_submesh[submesh];
902	else if (current_texture)
903	usetex=current_texture;
904	}
905	glBindTexture(GL_TEXTURE_2D,usetex);
906
907	color_index = 0;
908
909	// Gets the actual submesh.
910	geosubmesh = &geoMesh->mSubMesh[submesh];
911
912	// For each one of the strips.
913	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
914	{
915	// Paint the current strip.
916	glBegin(GL_TRIANGLE_STRIP);
917
918	if (getColorStrips())
919	{
920	// Gets the color of the strip.
921	r = mStripColors[submesh][color_index].r;
922	g = mStripColors[submesh][color_index].g;
923	b = mStripColors[submesh][color_index].b;
924
925	// Change to the next color.
926	color_index++;
927
928	// Paint a new color.
929	glColor3f(r,g,b);
930	}
931
932	// For each index of the strip.
933	for (int index = 0; index < lodStripsLib->mStrips[current_strip].size(); index++)
934	{
935	position = lodStripsLib->mStrips[current_strip][index];
936
937	// Gets the vertex normal.
938	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
939
940	x = vector3[0];
941	y = vector3[1];
942	z = vector3[2];
943
944	// Sets the vertex normal.
945	glNormal3f(x,y,z);
946
947	// set the texture coordinates if needed
948	if (usetex)
949	{
950	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
951	x = vector2[0];
952	y = vector2[1];
953	glTexCoord2f(x,y);
954	}
955
956	// Gets the vertex coordinates.
957	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
958
959	x = vector3[0];
960	y = vector3[1];
961	z = vector3[2];
962
963	// Sets the vertex position.
964	glVertex3f(x,y,z);
965	}
966
967	// Increments current strip.
968	current_strip++;
969
970	// A strip is generated.
971	glEnd();
972
973	}
974	}
975
976	}//End drawTriangleStrip.
977
978
979	//---------------------------------------------------------------------------
980	// Paint lodtree object.
981	//---------------------------------------------------------------------------
982	void GeoMeshView::drawLodTree()
983	{
984	SubMesh *geosubmesh;
985	Index position;
986	Vector3 vector3;
987	Vector2 vector2;
988	float x,y,z;
989	float r,g,b;
990	int color_index;
991	int current_strip;
992
993	// Initialize current strip.
994	current_strip = 0;
995
996	glEnable(GL_ALPHA_TEST);
997	// glEnable(GL_BLEND);
998	// DRAW THE TRUNK AS A LODSTRIP OBJECT
999
1000	// For each submesh.
1001	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
1002	{
1003	// bind current texture to use
1004	GLuint usetex = 0;
1005	if (use_texture_mapping)
1006	{
1007	if (current_texture_submesh[submesh])
1008	usetex=current_texture_submesh[submesh];
1009	else if (current_texture)
1010	usetex=current_texture;
1011	}
1012	glBindTexture(GL_TEXTURE_2D,usetex);
1013
1014	color_index = 0;
1015
1016	// Gets the actual submesh.
1017	geosubmesh = &geoMesh->mSubMesh[submesh];
1018
1019	// For each one of the strips.
1020	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
1021	{
1022	// Paint the current strip.
1023	glBegin(GL_TRIANGLE_STRIP);
1024
1025	if (getColorStrips())
1026	{
1027	// Gets the color of the strip.
1028	r = mStripColors[submesh][color_index].r;
1029	g = mStripColors[submesh][color_index].g;
1030	b = mStripColors[submesh][color_index].b;
1031
1032	// Change to the next color.
1033	color_index++;
1034
1035	// Paint a new color.
1036	glColor3f(r,g,b);
1037	}
1038
1039	// For each index of the strip.
1040	for (int index = 0; index < lodTreeLib->GetStrip(current_strip).size(); index++)
1041	{
1042	position = lodTreeLib->GetStrip(current_strip)[index];
1043
1044	// Gets the vertex normal.
1045	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
1046
1047	x = vector3[0];
1048	y = vector3[1];
1049	z = vector3[2];
1050
1051	// Sets the vertex normal.
1052	glNormal3f(x,y,z);
1053
1054	// set the texture coordinates if needed
1055	if (usetex)
1056	{
1057	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
1058	x = vector2[0];
1059	y = vector2[1];
1060	glTexCoord2f(x,y);
1061	}
1062
1063	// Gets the vertex coordinates.
1064	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
1065
1066	x = vector3[0];
1067	y = vector3[1];
1068	z = vector3[2];
1069
1070	// Sets the vertex position.
1071	glVertex3f(x,y,z);
1072	}
1073
1074	// Increments current strip.
1075	current_strip++;
1076
1077	// A strip is generated.
1078	glEnd();
1079
1080	}
1081	}
1082
1083	// DRAW THE LEAVES AS A TRIANGLE SOUP
1084	glColor3f(0,1,1);
1085	glDisable(GL_LIGHTING);
1086	glBegin(GL_TRIANGLES);
1087	const Geometry::VertexData *foliage_verts = lodTreeLib->Get_Foliage_VertexData();
1088	const Geometry::IndexData *foliage_inds = lodTreeLib->CurrentLOD_Foliage_Indices();
1089	for (int j=0; j<lodTreeLib->CurrentLOD_Foliage_IndexCount(); j++)
1090	{
1091	float vx,vy,vz;
1092	foliage_verts->GetVertexCoord(foliage_inds->GetIndex(j),vx,vy,vz);
1093	glVertex3f(vx,vy,vz);
1094	}
1095	glEnd();
1096
1097	glEnable(GL_LIGHTING);
1098	glColor3f(1,1,1);
1099
1100	}//End drawTriangleStrip.
1101
1102
1103
1104	//---------------------------------------------------------------------------
1105	// Sets the lodstripslibrary object.
1106	//---------------------------------------------------------------------------
1107	void GeoMeshView::setLodStripsLibrary(LodStripsLibrary *lodstrips)
1108	{
1109	lodStripsLib = lodstrips;
1110	activeLodStrip();
1111	}
1112
1113	//---------------------------------------------------------------------------
1114	// Sets the lodtreeslibrary object.
1115	//---------------------------------------------------------------------------
1116	void GeoMeshView::setLodTreesLibrary(LodTreeLibrary *lodtrees)
1117	{
1118	lodTreeLib = lodtrees;
1119	activeLodTree();
1120	}
1121
1122	//---------------------------------------------------------------------------
1123	// Change de Level of detail of the object.
1124	//---------------------------------------------------------------------------
1125	void GeoMeshView::GoToLod_LodStrip(unsigned int lod)
1126	{
1127	if (mLodStrip)
1128	lodStripsLib->GoToLod(lod);
1129	if (mLodTree)
1130	lodTreeLib->GoToTrunkLod(lod);
1131	draw();
1132	}
1133
1134	//---------------------------------------------------------------------------
1135	// Change de Level of detail of the object.
1136	//---------------------------------------------------------------------------
1137	void GeoMeshView::GoToLod_LodTree(unsigned int lod)
1138	{
1139	if (mLodTree)
1140	lodTreeLib->GoToFoliageLod(lod);
1141	draw();
1142	}
1143
1144
1145	//---------------------------------------------------------------------------
1146	// Draw the object in the window.
1147	//---------------------------------------------------------------------------
1148	void GeoMeshView::draw()
1149	{
1150	glMatrixMode(GL_PROJECTION);
1151	glLoadIdentity();
1152
1153	if (current_texture && use_texture_mapping)
1154	glEnable(GL_TEXTURE_2D);
1155	else
1156	glDisable(GL_TEXTURE_2D);
1157
1158	glEnable(GL_LIGHTING);
1159
1160	// Frustrum.
1161	glViewport(0,0,w(),h());
1162	gluPerspective(60,(float)w()/(float)h(),0.1,1000);
1163
1164	glMatrixMode(GL_MODELVIEW);
1165	glLoadIdentity();
1166
1167	glEnable(GL_BLEND);
1168	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1169
1170	GLfloat light_ambient[] = {0.3,0.3,0.3,1.0};
1171	GLfloat luzpos[] = {0.0,0.0,1.0,0.0};
1172	GLfloat luzcolor[] = {1.0,1.0,1.0,1.0};
1173
1174	// glLightModelfv(GL_LIGHT_MODEL_AMBIENT, light_ambient);
1175	glEnable(GL_LIGHT0);
1176	glLightfv(GL_LIGHT0, GL_POSITION, luzpos);
1177	glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
1178	glLightfv(GL_LIGHT0, GL_DIFFUSE, luzcolor);
1179	glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 1);
1180	glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0);
1181	glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0);
1182
1183	glEnable (GL_POLYGON_OFFSET_LINE);
1184	glPolygonOffset(-1,-1);
1185	glEnable(GL_DEPTH_TEST);
1186	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
1187
1188	gluLookAt(0,0,2/mScaleFactor/ + size * 0.25, 0,0,0, 0,1,0);
1189
1190	glTranslatef(xshift,yshift,0);
1191	glRotatef(hAng,0,1,0);
1192	glRotatef(vAng,1,0,0);
1193	//glTranslatef(-xMed,-yMed,-zMed);
1194
1195	// Set white color to the object.
1196	glColor3d(1.0, 1.0, 1.0);
1197	GLfloat color_blanco[] = {1.0f,1.0f,1.0f,1.0f};
1198	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color_blanco);
1199
1200	glClearColor(0,0,0,0);
1201
1202	if (mCW)
1203	{
1204	glFrontFace(GL_CW);
1205	glEnable(GL_CULL_FACE);
1206	}
1207	else
1208	{
1209	if (mCCW)
1210	{
1211	glFrontFace(GL_CCW);
1212	glEnable(GL_CULL_FACE);
1213	}
1214	else
1215	{
1216	glDisable(GL_CULL_FACE);
1217	}
1218	}
1219
1220	if (mSolid)
1221	{
1222	enableColorStrips();
1223	glDisable(GL_LIGHTING);
1224	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1225	drawGeoMesh(false);
1226	}
1227	else
1228	{
1229	glEnable(GL_LIGHTING);
1230	}
1231
1232	if (mWire)
1233	{
1234	disableColorStrips();
1235	glDisable(GL_LIGHTING);
1236	glColor3d(0.0, 0.0, 1.0);
1237	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1238	drawGeoMesh(true);
1239	}
1240	else
1241	{
1242	if (!mSolid)
1243	{
1244	enableColorStrips();
1245	glEnable(GL_LIGHTING);
1246	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1247	drawGeoMesh(false);
1248	}
1249	}
1250
1251	swap_buffers();
1252
1253	// Calculate the FPS.
1254	calcFPS();
1255	}
1256
1257
1258	#include <IL/ILUT.h>
1259
1260	void GeoMeshView::LoadTexture(const char *imgfile)
1261	{
1262	ilInit();
1263	ilutEnable(ILUT_OPENGL_CONV);
1264	ilutRenderer(ILUT_OPENGL);
1265
1266	current_texture = ilutGLLoadImage((const ILstring)imgfile);
1267	if (!current_texture)
1268	fltk::alert("Error loading texture!");
1269
1270	ilShutDown();
1271	}
1272
1273
1274	void GeoMeshView::LoadTextureSubMesh(int isubmesh, const char *imgfile)
1275	{
1276	ilInit();
1277	ilutEnable(ILUT_OPENGL_CONV);
1278	ilutRenderer(ILUT_OPENGL);
1279
1280	current_texture_submesh[isubmesh] = ilutGLLoadImage((const ILstring)imgfile);
1281	if (!current_texture_submesh[isubmesh])
1282	fltk::alert("Error loading texture!");
1283
1284	ilShutDown();
1285	}
1286
1287	void GeoMeshView::resetTextures(void)
1288	{
1289	if (current_texture)
1290	{
1291	glDeleteTextures(1,&current_texture);
1292	current_texture=0;
1293	}
1294	if (current_texture_submesh)
1295	{
1296	glDeleteTextures(getSubMeshCount(),current_texture_submesh);
1297	for (int i=0; i<getSubMeshCount(); i++)
1298	current_texture_submesh[i]=0;
1299	}
1300	}

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