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source: GTP/trunk/Lib/Geom/shared/GeoTool/src/GeoMeshView.cpp @ 1083

Revision 1083, 33.9 KB checked in by gumbau, 19 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	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	// For each strip.
595	// MultiIndexData *dataInterface = lodStripsLib->dataRetrievalInterface;
596	IndexData *dataInterface = lodStripsLib->dataRetrievalInterface;
597	size_t triangle_count = dataInterface->GetNumValidIndices() - 2;
598	/* for (int strip = 0; strip < dataInterface->GetNumPrims(); strip++)
599	{
600	// triangle_count += lodStripsLib->mStrips[strip].size() - 2;
601	triangle_count += dataInterface->GetNumValidIndices(strip) - 2;
602	}*/
603
604	return triangle_count;
605	}
606
607	//---------------------------------------------------------------------------
608	// Repaint the Mesh.
609	//---------------------------------------------------------------------------
610	void GeoMeshView::drawGeoMesh(bool paintWire)
611	{
612	SubMesh *geosubmesh;
613	bool submesh_selected;
614
615	if (geoMesh)
616	{
617	if (mLodStrip)
618	{
619	drawLodStrip();
620	}
621	else if (mLodTree)
622	{
623	drawLodTree();
624	}
625	else
626	{
627	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
628	{
629	// Gets the actual submesh.
630	geosubmesh = &geoMesh->mSubMesh[submesh];
631
632	if (geosubmesh->mType == GEO_TRIANGLE_LIST)
633	{
634	if (mSubMeshSelected == submesh)
635	{
636	submesh_selected = true;
637	}
638	else
639	{
640	submesh_selected = false;
641	}
642
643	// Draw the actual submesh in triangle list.
644	drawTriangleList(submesh,submesh_selected,paintWire);
645	}
646	else
647	{
648	// Draw the actual submesh in triangle strip.
649	drawTriangleStrip(submesh);
650	}
651	}
652	}
653	}
654	}// End drawGeoMesh.
655
656	//---------------------------------------------------------------------------
657	// Paint eah strip separately.
658	//---------------------------------------------------------------------------
659	void GeoMeshView::drawTriangleStrip(int submesh)
660	{
661	SubMesh *geosubmesh;
662	Index position;
663	Vector3 vector3;
664	Vector2 vector2;
665	float x,y,z;
666	float r,g,b;
667	Index *index;
668	Index *indexBegin;
669	Index *indexEnd;
670	int color_index;
671
672	color_index = 0;
673
674	// Gets the actual submesh.
675	geosubmesh = &geoMesh->mSubMesh[submesh];
676
677	// bind current texture to use
678	bool usetex = SetTextureRenderingState(submesh);
679
680	// For each one of the strips.
681	for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
682	{
683	// Paint the current strip.
684
685	// First index of the strip.
686	indexBegin = geosubmesh->mStrip[strip];
687
688	// If the strips is not the first.
689	//if (strip != 0)
690	//{
691	// indexBegin++;
692	//}
693
694	int size= 0;
695	// If is the final strip
696	if (strip == (geosubmesh->mStripCount - 1))
697	{
698	// The end of the index array.
699	indexEnd = &geosubmesh->mIndex[geosubmesh->mIndexCount];
700	size= indexEnd - indexBegin;
701	}
702	else
703	{
704	// The beginning of the next strip.
705	indexEnd = geosubmesh->mStrip[strip + 1];
706
707	for (index = indexBegin; index < indexEnd; index++)
708	{
709	size++;
710	}
711	// Remove degenerated
712	//indexEnd--;
713	}
714
715	int i;
716	i = 0;
717
718	/* if (getColorStrips())
719	{
720	// Gets the color of the strip.
721	r = mStripColors[submesh][color_index].r;
722	g = mStripColors[submesh][color_index].g;
723	b = mStripColors[submesh][color_index].b;
724
725	// Change to the next color.
726	color_index++;
727
728	// Paint a new color.
729	glColor3f(r,g,b);
730	}*/
731
732
733	//VERTEX ARRAYS
734	glEnableClientState(GL_VERTEX_ARRAY);
735	glEnableClientState(GL_NORMAL_ARRAY);
736	if (usetex)
737	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
738	else
739	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
740
741	glVertexPointer(3, GL_FLOAT, 0, geosubmesh->mVertexBuffer->mPosition);
742	glNormalPointer(GL_FLOAT, 0, geosubmesh->mVertexBuffer->mNormal);
743	if (usetex)
744	glTexCoordPointer(2, GL_FLOAT, 0, geosubmesh->mVertexBuffer->mTexCoords);
745
746	glDrawElements( GL_TRIANGLE_STRIP,
747	size
748	,
749	GL_UNSIGNED_INT,
750	indexBegin
751	);
752
753	if (submesh==leavesSubMesh)
754	{
755	glDisable(GL_ALPHA_TEST);
756	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
757	}
758
759	}
760
761	}//End drawTriangleStrip.
762
763	//---------------------------------------------------------------------------
764	// Paint the array of idices.
765	//---------------------------------------------------------------------------
766	void GeoMeshView::drawTriangleList( int submesh,
767	bool selectedSubMesh,
768	bool paintWire)
769	{
770	SubMesh *geosubmesh;
771	Index position;
772	Vector3 vector3;
773	float x,y,z;
774	int idx_offset;
775	int vrt_offset;
776
777	// Index offset.
778	idx_offset = 0;
779
780	// Vertex offset.
781	vrt_offset = 0;
782
783	// Gets the actual submesh.
784	geosubmesh = &geoMesh->mSubMesh[submesh];
785
786	// bind current texture to use
787	bool usetex = SetTextureRenderingState(submesh);
788
789	// If wire is not selected.
790	if (!paintWire)
791	{
792	// If a mesh is selected.
793	if (selectedSubMesh)
794	{
795	glColor3d(1.0,0.0,0.0);
796	GLfloat red[] = {1.0f,0.0f,0.0f,1.0f};
797	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,red);
798	}
799	// If is a tree.
800	else if (leavesSubMesh >= 0)
801	{
802	glColor3d(1.0, 0.5, 0.5);
803	GLfloat brown[] = {1.0f,0.5f,0.5f,1.0f};
804	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,brown);
805
806	// For each index of the strip.
807	if (submesh == leavesSubMesh)
808	{
809	if (!usetex)
810	{
811	glColor3d(0.0,1.0,0.0);
812	GLfloat green[] = {0.0f,1.0f,0.0f,1.0f};
813	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,green);
814	}
815	else
816	{
817	glEnable(GL_ALPHA_TEST);
818	glAlphaFunc(GL_GREATER,0.5f);
819	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
820	}
821	}
822	}
823	// If is NOT a tree.
824	else
825	{
826	// Set white color to the object.
827	glColor3d(1.0, 1.0, 1.0);
828	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
829	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
830	}
831	}
832
833	if (usetex)
834	{
835	glColor4f(1.0f,1.0f,1.0f,1.0f);
836	GLfloat white[] = {1.0f,1.0f,1.0f,1.0f};
837	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,white);
838	}
839
840	// Enable arrays.
841	glEnableClientState(GL_VERTEX_ARRAY);
842	glEnableClientState(GL_NORMAL_ARRAY);
843	if (usetex)
844	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
845	else
846	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
847
848	// If the submesh is shared vertex.
849	if (geosubmesh->mSharedVertexBuffer)
850	{
851	glVertexPointer(3, GL_FLOAT, 0, mSharedPosArray);
852	glNormalPointer(GL_FLOAT, 0, mSharedNorArray);
853	if (usetex)
854	glTexCoordPointer(2, GL_FLOAT, 0, mSharedTexCoordArray);
855	}
856	else
857	{
858	glVertexPointer(3, GL_FLOAT, 0, mPosArray[submesh]);
859	glNormalPointer(GL_FLOAT, 0, mNorArray[submesh]);
860	if (usetex)
861	glTexCoordPointer(2, GL_FLOAT, 0, mTexCoordArray[submesh]);
862	}
863
864	glDrawElements( GL_TRIANGLES,
865	geosubmesh->mIndexCount,
866	GL_UNSIGNED_INT,
867	mIndexArray[submesh]);
868
869	if (submesh==leavesSubMesh)
870	{
871	glDisable(GL_ALPHA_TEST);
872	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
873	}
874
875	}//End drawTriangleList
876
877	//---------------------------------------------------------------------------
878	// Paint lodstrip object.
879	//---------------------------------------------------------------------------
880	void GeoMeshView::drawLodStrip()
881	{
882	SubMesh *geosubmesh;
883	Index position;
884	Vector3 vector3;
885	Vector2 vector2;
886	float x,y,z;
887	float r,g,b;
888	int color_index;
889	int current_strip;
890
891	// Initialize current strip.
892	current_strip = 0;
893
894	// For each submesh.
895	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
896	{
897	// bind current texture to use
898	bool usetex = SetTextureRenderingState(submesh);
899
900	color_index = 0;
901
902	// Gets the actual submesh.
903	geosubmesh = &geoMesh->mSubMesh[submesh];
904
905	// For each one of the strips.
906	/* for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
907	{
908	// Paint the current strip.
909	glBegin(GL_TRIANGLE_STRIP);
910
911	if (getColorStrips())
912	{
913	// Gets the color of the strip.
914	r = mStripColors[submesh][color_index].r;
915	g = mStripColors[submesh][color_index].g;
916	b = mStripColors[submesh][color_index].b;
917
918	// Change to the next color.
919	color_index++;
920
921	// Paint a new color.
922	glColor3f(r,g,b);
923	}
924
925	// For each index of the strip.
926	for (int index = 0; index < lodStripsLib->dataRetrievalInterface->GetNumValidIndices(current_strip); index++)
927	{
928	position = lodStripsLib->dataRetrievalInterface->GetIndex(current_strip,index);
929
930	// Gets the vertex normal.
931	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
932
933	x = vector3[0];
934	y = vector3[1];
935	z = vector3[2];
936
937	// Sets the vertex normal.
938	glNormal3f(x,y,z);
939
940	// set the texture coordinates if needed
941	if (usetex)
942	{
943	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
944	x = vector2[0];
945	y = vector2[1];
946	glTexCoord2f(x,y);
947	}
948
949	// Gets the vertex coordinates.
950	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
951
952	x = vector3[0];
953	y = vector3[1];
954	z = vector3[2];
955
956	// Sets the vertex position.
957	glVertex3f(x,y,z);
958	}
959
960	// Increments current strip.
961	current_strip++;
962
963	// A strip is generated.
964	glEnd();
965
966	}*/
967
968	int indices_to_render = lodStripsLib->GetValidIndexCount(submesh);
969	int offset = lodStripsLib->GetValidOffset(submesh);
970
971	glBegin(GL_TRIANGLE_STRIP);
972	//for (int index = 0; index < lodStripsLib->dataRetrievalInterface->GetNumValidIndices(); index ++)
973	for (int index = offset; index < indices_to_render+offset; index ++)
974	{
975	position = lodStripsLib->dataRetrievalInterface->GetIndex(index);
976
977	// Gets the vertex normal.
978	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
979
980	x = vector3[0];
981	y = vector3[1];
982	z = vector3[2];
983
984	// Sets the vertex normal.
985	glNormal3f(x,y,z);
986
987	// set the texture coordinates if needed
988	if (usetex)
989	{
990	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
991	x = vector2[0];
992	y = vector2[1];
993	glTexCoord2f(x,y);
994	}
995
996	// Gets the vertex coordinates.
997	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
998
999	x = vector3[0];
1000	y = vector3[1];
1001	z = vector3[2];
1002
1003	// Sets the vertex position.
1004	glVertex3f(x,y,z);
1005	}
1006	glEnd();
1007
1008	}
1009
1010
1011	}//End drawTriangleStrip.
1012
1013	//---------------------------------------------------------------------------
1014	// Paint lodtree object.
1015	//---------------------------------------------------------------------------
1016	void GeoMeshView::drawLodTree()
1017	{
1018	SubMesh *geosubmesh;
1019	Index position;
1020	Vector3 vector3;
1021	Vector2 vector2;
1022	float x,y,z;
1023	float r,g,b;
1024	int color_index;
1025	int current_strip;
1026
1027	// Initialize current strip.
1028	current_strip = 0;
1029
1030	// DRAW THE TRUNK AS A LODSTRIP OBJECT
1031	// For each submesh.
1032	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
1033	{
1034	if (submesh==leavesSubMesh)
1035	continue;
1036
1037	// bind current texture to use
1038	bool usetex = SetTextureRenderingState(submesh);
1039
1040	color_index = 0;
1041
1042	// Gets the actual submesh.
1043	geosubmesh = &geoMesh->mSubMesh[submesh];
1044
1045	// For each one of the strips.
1046	/* for (int strip = 0; strip < geosubmesh->mStripCount; strip++)
1047	{
1048	// Paint the current strip.
1049	glBegin(GL_TRIANGLE_STRIP);
1050
1051	if (getColorStrips())
1052	{
1053	// Gets the color of the strip.
1054	r = mStripColors[submesh][color_index].r;
1055	g = mStripColors[submesh][color_index].g;
1056	b = mStripColors[submesh][color_index].b;
1057
1058	// Change to the next color.
1059	color_index++;
1060
1061	// Paint a new color.
1062	glColor3f(r,g,b);
1063	}
1064
1065	// For each index of the strip.
1066	for (int index = 0; index < lodTreeLib->CurrentLOD_Trunk_IndexCountByStrip(current_strip); index++)
1067	{
1068	position = lodTreeLib->CurrentLOD_Trunk_Indices()->GetIndex(current_strip,index);
1069
1070	// Gets the vertex normal.
1071	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
1072
1073	x = vector3[0];
1074	y = vector3[1];
1075	z = vector3[2];
1076
1077	// Sets the vertex normal.
1078	glNormal3f(x,y,z);
1079
1080	// set the texture coordinates if needed
1081	if (usetex)
1082	{
1083	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
1084	x = vector2[0];
1085	y = vector2[1];
1086	glTexCoord2f(x,y);
1087	}
1088
1089	// Gets the vertex coordinates.
1090	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
1091
1092	x = vector3[0];
1093	y = vector3[1];
1094	z = vector3[2];
1095
1096	// Sets the vertex position.
1097	glVertex3f(x,y,z);
1098	}
1099
1100	// Increments current strip.
1101	current_strip++;
1102
1103	// A strip is generated.
1104	glEnd();
1105
1106	}*/
1107
1108	// int indices_to_render = lodTreeLib->trunk->GetValidIndexCount(submesh);
1109	int indices_to_render = lodTreeLib->GetValidTrunkIndexCount(submesh);
1110	int begin_index = lodTreeLib->GetValidTrunkOffset(submesh);
1111
1112	glBegin(GL_TRIANGLE_STRIP);
1113	for (int index = begin_index; index < indices_to_render+begin_index; index ++)
1114	{
1115	position = lodTreeLib->CurrentLOD_Trunk_Indices()->GetIndex(index);
1116
1117	// Gets the vertex normal.
1118	vector3 = geosubmesh->mVertexBuffer->mNormal[position];
1119
1120	x = vector3[0];
1121	y = vector3[1];
1122	z = vector3[2];
1123
1124	// Sets the vertex normal.
1125	glNormal3f(x,y,z);
1126
1127	// set the texture coordinates if needed
1128	if (usetex)
1129	{
1130	vector2 = geosubmesh->mVertexBuffer->mTexCoords[position];
1131	x = vector2[0];
1132	y = vector2[1];
1133	glTexCoord2f(x,y);
1134	}
1135
1136	// Gets the vertex coordinates.
1137	vector3 = geosubmesh->mVertexBuffer->mPosition[position];
1138
1139	x = vector3[0];
1140	y = vector3[1];
1141	z = vector3[2];
1142
1143	// Sets the vertex position.
1144	glVertex3f(x,y,z);
1145	}
1146	glEnd();
1147	}
1148
1149	// DRAW THE LEAVES AS A TRIANGLE SOUP
1150	// bind current texture to use
1151	bool usetex = SetTextureRenderingState(leavesSubMesh);
1152
1153	glEnable(GL_ALPHA_TEST);
1154	glAlphaFunc(GL_GREATER,0.5f);
1155	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
1156
1157	glBegin(GL_TRIANGLES);
1158	const Geometry::VertexData *foliage_verts = lodTreeLib->Get_Foliage_VertexData();
1159	const Geometry::IndexData *foliage_inds = lodTreeLib->CurrentLOD_Foliage_Indices();
1160	for (int j=0; j<lodTreeLib->CurrentLOD_Foliage_IndexCount(); j++)
1161	{
1162	float vx,vy,vz;
1163	if (usetex)
1164	{
1165	foliage_verts->GetVertexTexCoord(foliage_inds->GetIndex(j),vx,vy);
1166	glTexCoord2f(vx,vy);
1167	}
1168	foliage_verts->GetVertexNormal(foliage_inds->GetIndex(j),vx,vy,vz);
1169	glNormal3f(vx,vy,vz);
1170	foliage_verts->GetVertexCoord(foliage_inds->GetIndex(j),vx,vy,vz);
1171	glVertex3f(vx,vy,vz);
1172	}
1173	glEnd();
1174
1175	glColor3f(1,1,1);
1176	glDisable(GL_ALPHA_TEST);
1177	glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0);
1178	}
1179
1180	//---------------------------------------------------------------------------
1181	// Sets the lodstripslibrary object.
1182	//---------------------------------------------------------------------------
1183	void GeoMeshView::setLodStripsLibrary(LodStripsLibrary *lodstrips)
1184	{
1185	lodStripsLib = lodstrips;
1186	activeLodStrip();
1187	}
1188
1189	//---------------------------------------------------------------------------
1190	// Sets the lodtreeslibrary object.
1191	//---------------------------------------------------------------------------
1192	void GeoMeshView::setLodTreesLibrary(LodTreeLibrary *lodtrees)
1193	{
1194	lodTreeLib = lodtrees;
1195	activeLodTree();
1196	}
1197
1198	//---------------------------------------------------------------------------
1199	// Change de Level of detail of the object.
1200	//---------------------------------------------------------------------------
1201	void GeoMeshView::GoToLod_LodStrip(float lod)
1202	{
1203	if (mLodStrip)
1204	lodStripsLib->GoToLod(lod);
1205	if (mLodTree)
1206	lodTreeLib->GoToTrunkLod(lod);
1207	draw();
1208	}
1209
1210	//---------------------------------------------------------------------------
1211	// Change de Level of detail of the object.
1212	//---------------------------------------------------------------------------
1213	void GeoMeshView::GoToLod_LodTree(float lod)
1214	{
1215	if (mLodTree)
1216	lodTreeLib->GoToFoliageLod(lod);
1217	draw();
1218	}
1219
1220	//---------------------------------------------------------------------------
1221	// Draw the object in the window.
1222	//---------------------------------------------------------------------------
1223	void GeoMeshView::draw()
1224	{
1225	glMatrixMode(GL_PROJECTION);
1226	glLoadIdentity();
1227
1228	glEnable(GL_LIGHTING);
1229
1230	// Frustrum.
1231	glViewport(0,0,w(),h());
1232	gluPerspective(60,(float)w()/(float)h(),0.1,1000);
1233
1234	glMatrixMode(GL_MODELVIEW);
1235	glLoadIdentity();
1236
1237	glEnable(GL_BLEND);
1238	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1239
1240	GLfloat light_ambient[] = {0.3,0.3,0.3,1.0};
1241	GLfloat luzpos[] = {0.0,0.0,1.0,0.0};
1242	GLfloat luzcolor[] = {1.0,1.0,1.0,1.0};
1243
1244	// glLightModelfv(GL_LIGHT_MODEL_AMBIENT, light_ambient);
1245	glEnable(GL_LIGHT0);
1246	glLightfv(GL_LIGHT0, GL_POSITION, luzpos);
1247	glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
1248	glLightfv(GL_LIGHT0, GL_DIFFUSE, luzcolor);
1249	glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 1);
1250	glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0);
1251	glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0);
1252
1253	glEnable (GL_POLYGON_OFFSET_LINE);
1254	glPolygonOffset(-1,-1);
1255	glEnable(GL_DEPTH_TEST);
1256	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
1257
1258	gluLookAt(0,0,2/mScaleFactor/ + size * 0.25, 0,0,0, 0,1,0);
1259
1260	glTranslatef(xshift,yshift,0);
1261	glRotatef(hAng,0,1,0);
1262	glRotatef(vAng,1,0,0);
1263	//glTranslatef(-xMed,-yMed,-zMed);
1264
1265	// Set white color to the object.
1266	glColor3d(1.0, 1.0, 1.0);
1267	GLfloat color_blanco[] = {1.0f,1.0f,1.0f,1.0f};
1268	glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,color_blanco);
1269
1270	glClearColor(0,0,0,0);
1271
1272	if (mCW)
1273	{
1274	glFrontFace(GL_CW);
1275	glEnable(GL_CULL_FACE);
1276	}
1277	else
1278	{
1279	if (mCCW)
1280	{
1281	glFrontFace(GL_CCW);
1282	glEnable(GL_CULL_FACE);
1283	}
1284	else
1285	{
1286	glDisable(GL_CULL_FACE);
1287	}
1288	}
1289
1290	if (mSolid)
1291	{
1292	enableColorStrips();
1293	glDisable(GL_LIGHTING);
1294	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1295	drawGeoMesh(false);
1296	}
1297	else
1298	{
1299	glEnable(GL_LIGHTING);
1300	}
1301
1302	if (mWire)
1303	{
1304	disableColorStrips();
1305	glDisable(GL_LIGHTING);
1306	glColor3d(0.0, 0.0, 1.0);
1307	glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1308	drawGeoMesh(true);
1309	}
1310	else
1311	{
1312	if (!mSolid)
1313	{
1314	enableColorStrips();
1315	glEnable(GL_LIGHTING);
1316	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1317	drawGeoMesh(false);
1318	}
1319	}
1320
1321	swap_buffers();
1322
1323	// Calculate the FPS.
1324	//calcFPS();
1325	}
1326
1327	#include <IL/ILUT.h>
1328
1329	void GeoMeshView::LoadTexture(const char *imgfile)
1330	{
1331	ilInit();
1332	ilutEnable(ILUT_OPENGL_CONV);
1333	ilutRenderer(ILUT_OPENGL);
1334
1335	current_texture = ilutGLLoadImage((const ILstring)imgfile);
1336	if (!current_texture)
1337	fltk::alert("Error loading texture!");
1338
1339	ilShutDown();
1340	}
1341
1342	void GeoMeshView::LoadTextureSubMesh(int isubmesh, const char *imgfile)
1343	{
1344	ilInit();
1345	ilutEnable(ILUT_OPENGL_CONV);
1346	ilutRenderer(ILUT_OPENGL);
1347
1348	current_texture_submesh[isubmesh] = ilutGLLoadImage((const ILstring)imgfile);
1349	if (!current_texture_submesh[isubmesh])
1350	fltk::alert("Error loading texture!");
1351
1352	ilShutDown();
1353	}
1354
1355	void GeoMeshView::resetTextures(void)
1356	{
1357	if (current_texture)
1358	{
1359	glDeleteTextures(1,&current_texture);
1360	current_texture=0;
1361	}
1362	if (current_texture_submesh)
1363	{
1364	glDeleteTextures(getSubMeshCount(),current_texture_submesh);
1365	for (int i=0; i<getSubMeshCount(); i++)
1366	current_texture_submesh[i]=0;
1367	}
1368	}
1369
1370	bool GeoMeshView::SetTextureRenderingState(int submesh)
1371	{
1372	GLuint usetex = 0;
1373	if (use_texture_mapping)
1374	{
1375	if (current_texture_submesh[submesh])
1376	usetex=current_texture_submesh[submesh];
1377	else if (current_texture)
1378	usetex=current_texture;
1379	}
1380	if (usetex)
1381	glEnable(GL_TEXTURE_2D);
1382	else
1383	glDisable(GL_TEXTURE_2D);
1384
1385	glBindTexture(GL_TEXTURE_2D,usetex);
1386
1387	return (usetex!=0);
1388	}
1389
1390	int GeoMeshView::findLeavesSubMesh(void)
1391	{
1392	for (int i=0; i<geoMesh->mSubMeshCount; i++)
1393	if (geoMesh->mSubMesh[i].mType==GEO_TRIANGLE_LIST)
1394	return i;
1395	return -1;
1396	}
1397

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