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source: GTP/trunk/Lib/Geom/shared/GeoTool/src/GeoMeshView.cpp @ 1058

Revision 1058, 32.0 KB checked in by gumbau, 18 years ago (diff)
LODs parameters changed to the range 1-0 (max-min)

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	if (vertex_buffer->mTexCoords)
508	mSharedTexCoordArray = new GLfloat[vertex_buffer->mVertexCount * 2];
509	else
510	mSharedTexCoordArray = NULL;
511
512	for (int vertex = 0; vertex < vertex_buffer->mVertexCount; vertex++)
513	{
514	mSharedPosArray[3 * vertex] = vertex_buffer->mPosition[vertex].x;
515	mSharedPosArray[(3 * vertex) + 1] = vertex_buffer->mPosition[vertex].y;
516	mSharedPosArray[(3 * vertex) + 2] = vertex_buffer->mPosition[vertex].z;
517
518	mSharedNorArray[3 * vertex] = vertex_buffer->mNormal[vertex].x;
519	mSharedNorArray[(3 * vertex) + 1] = vertex_buffer->mNormal[vertex].y;
520	mSharedNorArray[(3 * vertex) + 2] = vertex_buffer->mNormal[vertex].z;
521
522	if (vertex_buffer->mTexCoords)
523	{
524	mSharedTexCoordArray[2 * vertex] = vertex_buffer->mTexCoords[vertex].x;
525	mSharedTexCoordArray[(2 * vertex) + 1] = vertex_buffer->mTexCoords[vertex].y;
526	}
527	}
528	}
529
530	// Build the arrays of vertices and indices.
531	mPosArray = new GLfloat*[geomesh->mSubMeshCount];
532	mNorArray = new GLfloat*[geomesh->mSubMeshCount];
533	mTexCoordArray = new GLfloat*[geomesh->mSubMeshCount];
534	mIndexArray = new GLuint*[geomesh->mSubMeshCount];
535
536	// For each submesh.
537	for (int submesh = 0; submesh < geomesh->mSubMeshCount; submesh++)
538	{
539	// Gets the actual submesh.
540	geosubmesh = &geomesh->mSubMesh[submesh];
541
542	// Allocate memory for index array of the actual submesh.
543	mIndexArray[submesh] = new GLuint[geosubmesh->mIndexCount];
544
545	// Gets the indices of the actual submesh.
546	for (int index = 0; index < geosubmesh->mIndexCount; index++)
547	{
548	mIndexArray[submesh][index] = geosubmesh->mIndex[index];
549	}
550
551	// If the submesh is NOT shared vertex.
552	if (!geosubmesh->mSharedVertexBuffer)
553	{
554	vertex_buffer = geosubmesh->mVertexBuffer;
555
556	// Allocate memory for vertices of the actual submesh.
557	mPosArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 3];
558	mNorArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 3];
559	mTexCoordArray[submesh] = new GLfloat[vertex_buffer->mVertexCount * 2];
560
561	// For each one of the vertex.
562	for (int vertex = 0; vertex < vertex_buffer->mVertexCount; vertex++)
563	{
564	mPosArray[submesh][3 * vertex] = vertex_buffer->mPosition[vertex].x;
565	mPosArray[submesh][(3 * vertex) + 1] = vertex_buffer->mPosition[vertex].y;
566	mPosArray[submesh][(3 * vertex) + 2] = vertex_buffer->mPosition[vertex].z;
567
568	mNorArray[submesh][3 * vertex] = vertex_buffer->mNormal[vertex].x;
569	mNorArray[submesh][(3 * vertex) + 1] = vertex_buffer->mNormal[vertex].y;
570	mNorArray[submesh][(3 * vertex) + 2] = vertex_buffer->mNormal[vertex].z;
571
572	mTexCoordArray[submesh][2 * vertex] = vertex_buffer->mTexCoords[vertex].x;
573	mTexCoordArray[submesh][(2 * vertex) + 1] = vertex_buffer->mTexCoords[vertex].y;
574	}// End for each vertex.
575	}
576	// If the submesh is shared vertex.
577	else
578	{
579	mPosArray[submesh] = NULL;
580	mNorArray[submesh] = NULL;
581	mTexCoordArray[submesh] = NULL;
582	}
583
584	}// End for each submesh.
585
586	mSubMeshCount = geoMesh->mSubMeshCount;
587	}
588
589	//---------------------------------------------------------------------------
590	// Gets the triangle count of the current lod.
591	//---------------------------------------------------------------------------
592	size_t GeoMeshView::getLodStripsTriangleCount()
593	{
594	size_t triangle_count;
595
596	// Initialize triangle count.
597	triangle_count = 0;
598
599	// For each strip.
600	// for (int strip = 0; strip < lodStripsLib->GetStripCount(); strip++)
601	MultiIndexData *dataInterface = lodStripsLib->dataRetrievalInterface;
602	for (int strip = 0; strip < dataInterface->GetNumPrims(); strip++)
603	{
604	// triangle_count += lodStripsLib->mStrips[strip].size() - 2;
605	triangle_count += dataInterface->GetNumValidIndices(strip) - 2;
606	}
607
608	return triangle_count;
609	}
610
611	//---------------------------------------------------------------------------
612	// Repaint the Mesh.
613	//---------------------------------------------------------------------------
614	void GeoMeshView::drawGeoMesh(bool paintWire)
615	{
616	SubMesh *geosubmesh;
617	bool submesh_selected;
618
619	if (geoMesh)
620	{
621	if (mLodStrip)
622	{
623	drawLodStrip();
624	}
625	else if (mLodTree)
626	{
627	drawLodTree();
628	}
629	else
630	{
631	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
632	{
633	// Gets the actual submesh.
634	geosubmesh = &geoMesh->mSubMesh[submesh];
635
636	if (geosubmesh->mType == GEO_TRIANGLE_LIST)
637	{
638	if (mSubMeshSelected == submesh)
639	{
640	submesh_selected = true;
641	}
642	else
643	{
644	submesh_selected = false;
645	}
646
647	// Draw the actual submesh in triangle list.
648	drawTriangleList(submesh,submesh_selected,paintWire);
649	}
650	else
651	{
652	// Draw the actual submesh in triangle strip.
653	drawTriangleStrip(submesh);
654	}
655	}
656	}
657	}
658	}// End drawGeoMesh.
659
660	//---------------------------------------------------------------------------
661	// Paint eah strip separately.
662	//---------------------------------------------------------------------------
663	void GeoMeshView::drawTriangleStrip(int submesh)
664	{
665	SubMesh *geosubmesh;
666	Index position;
667	Vector3 vector3;
668	Vector2 vector2;
669	float x,y,z;
670	float r,g,b;
671	Index *index;
672	Index *indexBegin;
673	Index *indexEnd;
674	int color_index;
675
676	color_index = 0;
677
678	// Gets the actual submesh.
679	geosubmesh = &geoMesh->mSubMesh[submesh];
680
681	// bind current texture to use
682	bool usetex = SetTextureRenderingState(submesh);
683
684	// For each one of the strips.
685	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
686	{
687	// Paint the current strip.
688
689	// First index of the strip.
690	indexBegin = geosubmesh->mStrip[strip];
691
692	// If the strips is not the first.
693	//if (strip != 0)
694	//{
695	// indexBegin++;
696	//}
697
698	int size= 0;
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	size= indexEnd - indexBegin;
705	}
706	else
707	{
708	// The beginning of the next strip.
709	indexEnd = geosubmesh->mStrip[strip + 1];
710
711	for (index = indexBegin; index < indexEnd; index++)
712	{
713	size++;
714	}
715	// Remove degenerated
716	//indexEnd--;
717	}
718
719	int i;
720	i = 0;
721
722	if (getColorStrips())
723	{
724	// Gets the color of the strip.
725	r = mStripColors[submesh][color_index].r;
726	g = mStripColors[submesh][color_index].g;
727	b = mStripColors[submesh][color_index].b;
728
729	// Change to the next color.
730	color_index++;
731
732	// Paint a new color.
733	glColor3f(r,g,b);
734	}
735
736
737	//VERTEX ARRAYS
738	glEnableClientState(GL_VERTEX_ARRAY);
739	glEnableClientState(GL_NORMAL_ARRAY);
740	if (usetex)
741	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
742	else
743	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
744
745	glVertexPointer(3, GL_FLOAT, 0, geosubmesh->mVertexBuffer->mPosition);
746	glNormalPointer(GL_FLOAT, 0, geosubmesh->mVertexBuffer->mNormal);
747	if (usetex)
748	glTexCoordPointer(2, GL_FLOAT, 0, geosubmesh->mVertexBuffer->mTexCoords);
749
750	glDrawElements( GL_TRIANGLE_STRIP,
751	size
752	,
753	GL_UNSIGNED_INT,
754	indexBegin
755	);
756
757	if (submesh==leavesSubMesh)
758	{
759	glDisable(GL_ALPHA_TEST);
760	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
761	}
762
763	}
764
765	}//End drawTriangleStrip.
766
767	//---------------------------------------------------------------------------
768	// Paint the array of idices.
769	//---------------------------------------------------------------------------
770	void GeoMeshView::drawTriangleList( int submesh,
771	bool selectedSubMesh,
772	bool paintWire)
773	{
774	SubMesh *geosubmesh;
775	Index position;
776	Vector3 vector3;
777	float x,y,z;
778	int idx_offset;
779	int vrt_offset;
780
781	// Index offset.
782	idx_offset = 0;
783
784	// Vertex offset.
785	vrt_offset = 0;
786
787	// Gets the actual submesh.
788	geosubmesh = &geoMesh->mSubMesh[submesh];
789
790	// bind current texture to use
791	bool usetex = SetTextureRenderingState(submesh);
792
793	// If wire is not selected.
794	if (!paintWire)
795	{
796	// If a mesh is selected.
797	if (selectedSubMesh)
798	{
799	glColor3d(1.0,0.0,0.0);
800	GLfloat red[] = {1.0f,0.0f,0.0f,1.0f};
801	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,red);
802	}
803	// If is a tree.
804	else if (leavesSubMesh >= 0)
805	{
806	glColor3d(1.0, 0.5, 0.5);
807	GLfloat brown[] = {1.0f,0.5f,0.5f,1.0f};
808	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,brown);
809
810	// For each index of the strip.
811	if (submesh == leavesSubMesh)
812	{
813	if (!usetex)
814	{
815	glColor3d(0.0,1.0,0.0);
816	GLfloat green[] = {0.0f,1.0f,0.0f,1.0f};
817	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,green);
818	}
819	else
820	{
821	glEnable(GL_ALPHA_TEST);
822	glAlphaFunc(GL_GREATER,0.5f);
823	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
824	}
825	}
826	}
827	// If is NOT a tree.
828	else
829	{
830	// Set white color to the object.
831	glColor3d(1.0, 1.0, 1.0);
832	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
833	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
834	}
835	}
836
837	if (usetex)
838	{
839	glColor4f(1.0f,1.0f,1.0f,1.0f);
840	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
841	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
842	}
843
844	// Enable arrays.
845	glEnableClientState(GL_VERTEX_ARRAY);
846	glEnableClientState(GL_NORMAL_ARRAY);
847	if (usetex)
848	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
849	else
850	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
851
852	// If the submesh is shared vertex.
853	if (geosubmesh->mSharedVertexBuffer)
854	{
855	glVertexPointer(3, GL_FLOAT, 0, mSharedPosArray);
856	glNormalPointer(GL_FLOAT, 0, mSharedNorArray);
857	if (usetex)
858	glTexCoordPointer(2, GL_FLOAT, 0, mSharedTexCoordArray);
859	}
860	else
861	{
862	glVertexPointer(3, GL_FLOAT, 0, mPosArray[submesh]);
863	glNormalPointer(GL_FLOAT, 0, mNorArray[submesh]);
864	if (usetex)
865	glTexCoordPointer(2, GL_FLOAT, 0, mTexCoordArray[submesh]);
866	}
867
868	glDrawElements( GL_TRIANGLES,
869	geosubmesh->mIndexCount,
870	GL_UNSIGNED_INT,
871	mIndexArray[submesh]);
872
873	if (submesh==leavesSubMesh)
874	{
875	glDisable(GL_ALPHA_TEST);
876	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
877	}
878
879	}//End drawTriangleList
880
881	//---------------------------------------------------------------------------
882	// Paint lodstrip object.
883	//---------------------------------------------------------------------------
884	void GeoMeshView::drawLodStrip()
885	{
886	SubMesh *geosubmesh;
887	Index position;
888	Vector3 vector3;
889	Vector2 vector2;
890	float x,y,z;
891	float r,g,b;
892	int color_index;
893	int current_strip;
894
895	// Initialize current strip.
896	current_strip = 0;
897
898	// For each submesh.
899	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
900	{
901	// bind current texture to use
902	bool usetex = SetTextureRenderingState(submesh);
903
904	color_index = 0;
905
906	// Gets the actual submesh.
907	geosubmesh = &geoMesh->mSubMesh[submesh];
908
909	// For each one of the strips.
910	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
911	{
912	// Paint the current strip.
913	glBegin(GL_TRIANGLE_STRIP);
914
915	if (getColorStrips())
916	{
917	// Gets the color of the strip.
918	r = mStripColors[submesh][color_index].r;
919	g = mStripColors[submesh][color_index].g;
920	b = mStripColors[submesh][color_index].b;
921
922	// Change to the next color.
923	color_index++;
924
925	// Paint a new color.
926	glColor3f(r,g,b);
927	}
928
929	// For each index of the strip.
930	// for (int index = 0; index < lodStripsLib->mStrips[current_strip].size(); index++)
931	for (int index = 0; index < lodStripsLib->dataRetrievalInterface->GetNumValidIndices(current_strip); index++)
932	{
933	// position = lodStripsLib->mStrips[current_strip][index];
934	position = lodStripsLib->dataRetrievalInterface->GetIndex(current_strip,index);
935
936	// Gets the vertex normal.
937	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
938
939	x = vector3[0];
940	y = vector3[1];
941	z = vector3[2];
942
943	// Sets the vertex normal.
944	glNormal3f(x,y,z);
945
946	// set the texture coordinates if needed
947	if (usetex)
948	{
949	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
950	x = vector2[0];
951	y = vector2[1];
952	glTexCoord2f(x,y);
953	}
954
955	// Gets the vertex coordinates.
956	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
957
958	x = vector3[0];
959	y = vector3[1];
960	z = vector3[2];
961
962	// Sets the vertex position.
963	glVertex3f(x,y,z);
964	}
965
966	// Increments current strip.
967	current_strip++;
968
969	// A strip is generated.
970	glEnd();
971
972	}
973	}
974
975	}//End drawTriangleStrip.
976
977
978	//---------------------------------------------------------------------------
979	// Paint lodtree object.
980	//---------------------------------------------------------------------------
981	void GeoMeshView::drawLodTree()
982	{
983	SubMesh *geosubmesh;
984	Index position;
985	Vector3 vector3;
986	Vector2 vector2;
987	float x,y,z;
988	float r,g,b;
989	int color_index;
990	int current_strip;
991
992	// Initialize current strip.
993	current_strip = 0;
994
995	// DRAW THE TRUNK AS A LODSTRIP OBJECT
996
997	// For each submesh.
998	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
999	{
1000	if (submesh==leavesSubMesh)
1001	continue;
1002
1003	// bind current texture to use
1004	bool usetex = SetTextureRenderingState(submesh);
1005
1006	color_index = 0;
1007
1008	// Gets the actual submesh.
1009	geosubmesh = &geoMesh->mSubMesh[submesh];
1010
1011	// For each one of the strips.
1012	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
1013	{
1014	// Paint the current strip.
1015	glBegin(GL_TRIANGLE_STRIP);
1016
1017	if (getColorStrips())
1018	{
1019	// Gets the color of the strip.
1020	r = mStripColors[submesh][color_index].r;
1021	g = mStripColors[submesh][color_index].g;
1022	b = mStripColors[submesh][color_index].b;
1023
1024	// Change to the next color.
1025	color_index++;
1026
1027	// Paint a new color.
1028	glColor3f(r,g,b);
1029	}
1030
1031	// For each index of the strip.
1032	// for (int index = 0; index < lodTreeLib->GetStrip(current_strip).size(); index++)
1033	for (int index = 0; index < lodTreeLib->CurrentLOD_Trunk_IndexCountByStrip(current_strip); index++)
1034	{
1035	// position = lodTreeLib->GetStrip(current_strip)[index];
1036	position = lodTreeLib->CurrentLOD_Trunk_Indices()->GetIndex(current_strip,index);
1037
1038	// Gets the vertex normal.
1039	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
1040
1041	x = vector3[0];
1042	y = vector3[1];
1043	z = vector3[2];
1044
1045	// Sets the vertex normal.
1046	glNormal3f(x,y,z);
1047
1048	// set the texture coordinates if needed
1049	if (usetex)
1050	{
1051	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
1052	x = vector2[0];
1053	y = vector2[1];
1054	glTexCoord2f(x,y);
1055	}
1056
1057	// Gets the vertex coordinates.
1058	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
1059
1060	x = vector3[0];
1061	y = vector3[1];
1062	z = vector3[2];
1063
1064	// Sets the vertex position.
1065	glVertex3f(x,y,z);
1066	}
1067
1068	// Increments current strip.
1069	current_strip++;
1070
1071	// A strip is generated.
1072	glEnd();
1073
1074	}
1075	}
1076
1077	// DRAW THE LEAVES AS A TRIANGLE SOUP
1078	// bind current texture to use
1079	bool usetex = SetTextureRenderingState(leavesSubMesh);
1080
1081	glEnable(GL_ALPHA_TEST);
1082	glAlphaFunc(GL_GREATER,0.5f);
1083	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
1084
1085	glBegin(GL_TRIANGLES);
1086	const Geometry::VertexData *foliage_verts = lodTreeLib->Get_Foliage_VertexData();
1087	const Geometry::IndexData *foliage_inds = lodTreeLib->CurrentLOD_Foliage_Indices();
1088	for (int j=0; j<lodTreeLib->CurrentLOD_Foliage_IndexCount(); j++)
1089	{
1090	float vx,vy,vz;
1091	if (usetex)
1092	{
1093	foliage_verts->GetVertexTexCoord(foliage_inds->GetIndex(j),vx,vy);
1094	glTexCoord2f(vx,vy);
1095	}
1096	foliage_verts->GetVertexNormal(foliage_inds->GetIndex(j),vx,vy,vz);
1097	glNormal3f(vx,vy,vz);
1098	foliage_verts->GetVertexCoord(foliage_inds->GetIndex(j),vx,vy,vz);
1099	glVertex3f(vx,vy,vz);
1100	}
1101	glEnd();
1102
1103	glColor3f(1,1,1);
1104	glDisable(GL_ALPHA_TEST);
1105	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
1106	}
1107
1108
1109
1110	//---------------------------------------------------------------------------
1111	// Sets the lodstripslibrary object.
1112	//---------------------------------------------------------------------------
1113	void GeoMeshView::setLodStripsLibrary(LodStripsLibrary *lodstrips)
1114	{
1115	lodStripsLib = lodstrips;
1116	activeLodStrip();
1117	}
1118
1119	//---------------------------------------------------------------------------
1120	// Sets the lodtreeslibrary object.
1121	//---------------------------------------------------------------------------
1122	void GeoMeshView::setLodTreesLibrary(LodTreeLibrary *lodtrees)
1123	{
1124	lodTreeLib = lodtrees;
1125	activeLodTree();
1126	}
1127
1128	//---------------------------------------------------------------------------
1129	// Change de Level of detail of the object.
1130	//---------------------------------------------------------------------------
1131	void GeoMeshView::GoToLod_LodStrip(float lod)
1132	{
1133	if (mLodStrip)
1134	lodStripsLib->GoToLod(lod);
1135	if (mLodTree)
1136	lodTreeLib->GoToTrunkLod(lod);
1137	draw();
1138	}
1139
1140	//---------------------------------------------------------------------------
1141	// Change de Level of detail of the object.
1142	//---------------------------------------------------------------------------
1143	void GeoMeshView::GoToLod_LodTree(float lod)
1144	{
1145	if (mLodTree)
1146	lodTreeLib->GoToFoliageLod(lod);
1147	draw();
1148	}
1149
1150
1151	//---------------------------------------------------------------------------
1152	// Draw the object in the window.
1153	//---------------------------------------------------------------------------
1154	void GeoMeshView::draw()
1155	{
1156	glMatrixMode(GL_PROJECTION);
1157	glLoadIdentity();
1158
1159	glEnable(GL_LIGHTING);
1160
1161	// Frustrum.
1162	glViewport(0,0,w(),h());
1163	gluPerspective(60,(float)w()/(float)h(),0.1,1000);
1164
1165	glMatrixMode(GL_MODELVIEW);
1166	glLoadIdentity();
1167
1168	glEnable(GL_BLEND);
1169	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1170
1171	GLfloat light_ambient[] = {0.3,0.3,0.3,1.0};
1172	GLfloat luzpos[] = {0.0,0.0,1.0,0.0};
1173	GLfloat luzcolor[] = {1.0,1.0,1.0,1.0};
1174
1175	// glLightModelfv(GL_LIGHT_MODEL_AMBIENT, light_ambient);
1176	glEnable(GL_LIGHT0);
1177	glLightfv(GL_LIGHT0, GL_POSITION, luzpos);
1178	glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
1179	glLightfv(GL_LIGHT0, GL_DIFFUSE, luzcolor);
1180	glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 1);
1181	glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0);
1182	glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0);
1183
1184	glEnable (GL_POLYGON_OFFSET_LINE);
1185	glPolygonOffset(-1,-1);
1186	glEnable(GL_DEPTH_TEST);
1187	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
1188
1189	gluLookAt(0,0,2/mScaleFactor/ + size * 0.25, 0,0,0, 0,1,0);
1190
1191	glTranslatef(xshift,yshift,0);
1192	glRotatef(hAng,0,1,0);
1193	glRotatef(vAng,1,0,0);
1194	//glTranslatef(-xMed,-yMed,-zMed);
1195
1196	// Set white color to the object.
1197	glColor3d(1.0, 1.0, 1.0);
1198	GLfloat color_blanco[] = {1.0f,1.0f,1.0f,1.0f};
1199	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color_blanco);
1200
1201	glClearColor(0,0,0,0);
1202
1203	if (mCW)
1204	{
1205	glFrontFace(GL_CW);
1206	glEnable(GL_CULL_FACE);
1207	}
1208	else
1209	{
1210	if (mCCW)
1211	{
1212	glFrontFace(GL_CCW);
1213	glEnable(GL_CULL_FACE);
1214	}
1215	else
1216	{
1217	glDisable(GL_CULL_FACE);
1218	}
1219	}
1220
1221	if (mSolid)
1222	{
1223	enableColorStrips();
1224	glDisable(GL_LIGHTING);
1225	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1226	drawGeoMesh(false);
1227	}
1228	else
1229	{
1230	glEnable(GL_LIGHTING);
1231	}
1232
1233	if (mWire)
1234	{
1235	disableColorStrips();
1236	glDisable(GL_LIGHTING);
1237	glColor3d(0.0, 0.0, 1.0);
1238	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1239	drawGeoMesh(true);
1240	}
1241	else
1242	{
1243	if (!mSolid)
1244	{
1245	enableColorStrips();
1246	glEnable(GL_LIGHTING);
1247	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1248	drawGeoMesh(false);
1249	}
1250	}
1251
1252	swap_buffers();
1253
1254	// Calculate the FPS.
1255	calcFPS();
1256	}
1257
1258
1259	#include <IL/ILUT.h>
1260
1261	void GeoMeshView::LoadTexture(const char *imgfile)
1262	{
1263	ilInit();
1264	ilutEnable(ILUT_OPENGL_CONV);
1265	ilutRenderer(ILUT_OPENGL);
1266
1267	current_texture = ilutGLLoadImage((const ILstring)imgfile);
1268	if (!current_texture)
1269	fltk::alert("Error loading texture!");
1270
1271	ilShutDown();
1272	}
1273
1274
1275	void GeoMeshView::LoadTextureSubMesh(int isubmesh, const char *imgfile)
1276	{
1277	ilInit();
1278	ilutEnable(ILUT_OPENGL_CONV);
1279	ilutRenderer(ILUT_OPENGL);
1280
1281	current_texture_submesh[isubmesh] = ilutGLLoadImage((const ILstring)imgfile);
1282	if (!current_texture_submesh[isubmesh])
1283	fltk::alert("Error loading texture!");
1284
1285	ilShutDown();
1286	}
1287
1288	void GeoMeshView::resetTextures(void)
1289	{
1290	if (current_texture)
1291	{
1292	glDeleteTextures(1,&current_texture);
1293	current_texture=0;
1294	}
1295	if (current_texture_submesh)
1296	{
1297	glDeleteTextures(getSubMeshCount(),current_texture_submesh);
1298	for (int i=0; i<getSubMeshCount(); i++)
1299	current_texture_submesh[i]=0;
1300	}
1301	}
1302
1303
1304	bool GeoMeshView::SetTextureRenderingState(int submesh)
1305	{
1306	GLuint usetex = 0;
1307	if (use_texture_mapping)
1308	{
1309	if (current_texture_submesh[submesh])
1310	usetex=current_texture_submesh[submesh];
1311	else if (current_texture)
1312	usetex=current_texture;
1313	}
1314	if (usetex)
1315	glEnable(GL_TEXTURE_2D);
1316	else
1317	glDisable(GL_TEXTURE_2D);
1318
1319	glBindTexture(GL_TEXTURE_2D,usetex);
1320
1321	return (usetex!=0);
1322	}
1323
1324
1325	int GeoMeshView::findLeavesSubMesh(void)
1326	{
1327	for (int i=0; i<geoMesh->mSubMeshCount; i++)
1328	if (geoMesh->mSubMesh[i].mType==GEO_TRIANGLE_LIST)
1329	return i;
1330	return -1;
1331	}

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