Context Navigation

OgreManualObject.cpp @ 692

Revision 692, 28.7 KB checked in by mattausch, 19 years ago (diff)
adding ogre 1.2 and dependencies

Line
1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://www.ogre3d.org/
6
7	Copyright (c) 2000-2005 The OGRE Team
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23	-----------------------------------------------------------------------------
24	*/
25	#include "OgreStableHeaders.h"
26	#include "OgreManualObject.h"
27	#include "OgreException.h"
28	#include "OgreMaterialManager.h"
29	#include "OgreSceneNode.h"
30	#include "OgreRoot.h"
31	#include "OgreRenderSystem.h"
32	#include "OgreHardwareBufferManager.h"
33	#include "OgreEdgeListBuilder.h"
34	#include "OgreMeshManager.h"
35	#include "OgreMesh.h"
36	#include "OgreSubMesh.h"
37
38	namespace Ogre {
39
40	#define TEMP_INITIAL_SIZE 50
41	#define TEMP_VERTEXSIZE_GUESS sizeof(float) * 12
42	#define TEMP_INITIAL_VERTEX_SIZE TEMP_VERTEXSIZE_GUESS * TEMP_INITIAL_SIZE
43	#define TEMP_INITIAL_INDEX_SIZE sizeof(uint16) * TEMP_INITIAL_SIZE
44	//-----------------------------------------------------------------------------
45	ManualObject::ManualObject(const String& name)
46	: MovableObject(name),
47	mCurrentSection(0), mFirstVertex(true),
48	mTempVertexPending(false),
49	mTempVertexBuffer(0), mTempVertexSize(TEMP_INITIAL_VERTEX_SIZE),
50	mTempIndexBuffer(0), mTempIndexSize(TEMP_INITIAL_INDEX_SIZE),
51	mDeclSize(0), mTexCoordIndex(0), mRadius(0), mAnyIndexed(false),
52	mEdgeList(0)
53	{
54	}
55	//-----------------------------------------------------------------------------
56	ManualObject::~ManualObject()
57	{
58	clear();
59	}
60	//-----------------------------------------------------------------------------
61	void ManualObject::clear(void)
62	{
63	resetTempAreas();
64	for (SectionList::iterator i = mSectionList.begin(); i != mSectionList.end(); ++i)
65	{
66	delete *i;
67	}
68	mSectionList.clear();
69	mRadius = 0;
70	mAABB.setNull();
71	delete mEdgeList;
72	mEdgeList = 0;
73	mAnyIndexed = false;
74	for (ShadowRenderableList::iterator s = mShadowRenderables.begin();
75	s != mShadowRenderables.end(); ++s)
76	{
77	delete *s;
78	}
79	mShadowRenderables.clear();
80
81
82	}
83	//-----------------------------------------------------------------------------
84	void ManualObject::resetTempAreas(void)
85	{
86	delete [] mTempVertexBuffer;
87	delete [] mTempIndexBuffer;
88	mTempVertexBuffer = 0;
89	mTempIndexBuffer = 0;
90	mTempVertexSize = TEMP_INITIAL_VERTEX_SIZE;
91	mTempIndexSize = TEMP_INITIAL_INDEX_SIZE;
92	}
93	//-----------------------------------------------------------------------------
94	void ManualObject::resizeTempVertexBufferIfNeeded(size_t numVerts)
95	{
96	// Calculate byte size
97	// Use decl if we know it by now, otherwise default size to pos/norm/texcoord*2
98	size_t newSize;
99	if (!mFirstVertex)
100	{
101	newSize = mDeclSize * numVerts;
102	}
103	else
104	{
105	// estimate - size checks will deal for subsequent verts
106	newSize = TEMP_VERTEXSIZE_GUESS * numVerts;
107	}
108	if (newSize > mTempVertexSize \|\| !mTempVertexBuffer)
109	{
110	if (!mTempVertexBuffer)
111	{
112	// init
113	newSize = mTempVertexSize;
114	}
115	else
116	{
117	// increase to at least double current
118	newSize = std::max(newSize, mTempVertexSize*2);
119	}
120	// copy old data
121	char* tmp = mTempVertexBuffer;
122	mTempVertexBuffer = new char[newSize];
123	if (tmp)
124	{
125	memcpy(mTempVertexBuffer, tmp, mTempVertexSize);
126	// delete old buffer
127	delete [] tmp;
128	}
129	mTempVertexSize = newSize;
130	}
131	}
132	//-----------------------------------------------------------------------------
133	void ManualObject::resizeTempIndexBufferIfNeeded(size_t numInds)
134	{
135	size_t newSize = numInds * sizeof(uint16);
136	if (newSize > mTempIndexSize \|\| !mTempIndexBuffer)
137	{
138	if (!mTempIndexBuffer)
139	{
140	// init
141	newSize = mTempIndexSize;
142	}
143	else
144	{
145	// increase to at least double current
146	newSize = std::max(newSize, mTempIndexSize*2);
147	}
148	numInds = newSize / sizeof(uint16);
149	uint16* tmp = mTempIndexBuffer;
150	mTempIndexBuffer = new uint16[numInds];
151	if (tmp)
152	{
153	memcpy(mTempIndexBuffer, tmp, mTempIndexSize);
154	delete [] tmp;
155	}
156	mTempIndexSize = newSize;
157	}
158
159	}
160	//-----------------------------------------------------------------------------
161	void ManualObject::estimateVertexCount(size_t vcount)
162	{
163	resizeTempVertexBufferIfNeeded(vcount);
164	}
165	//-----------------------------------------------------------------------------
166	void ManualObject::estimateIndexCount(size_t icount)
167	{
168	resizeTempIndexBufferIfNeeded(icount);
169	}
170	//-----------------------------------------------------------------------------
171	void ManualObject::begin(const String& materialName,
172	RenderOperation::OperationType opType)
173	{
174	if (mCurrentSection)
175	{
176	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
177	"You cannot call begin() again until after you call end()",
178	"ManualObject::begin");
179	}
180	mCurrentSection = new ManualObjectSection(this, materialName, opType);
181	mSectionList.push_back(mCurrentSection);
182	mFirstVertex = true;
183	mDeclSize = 0;
184	mTexCoordIndex = 0;
185	}
186	//-----------------------------------------------------------------------------
187	void ManualObject::position(const Vector3& pos)
188	{
189	position(pos.x, pos.y, pos.z);
190	}
191	//-----------------------------------------------------------------------------
192	void ManualObject::position(Real x, Real y, Real z)
193	{
194	if (!mCurrentSection)
195	{
196	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
197	"You must call begin() before this method",
198	"ManualObject::position");
199	}
200	if (mTempVertexPending)
201	{
202	// bake current vertex
203	copyTempVertexToBuffer();
204	mFirstVertex = false;
205	}
206
207	if (mFirstVertex)
208	{
209	// defining declaration
210	mCurrentSection->getRenderOperation()->vertexData->vertexDeclaration
211	->addElement(0, mDeclSize, VET_FLOAT3, VES_POSITION);
212	mDeclSize += VertexElement::getTypeSize(VET_FLOAT3);
213	}
214
215	mTempVertex.position.x = x;
216	mTempVertex.position.y = y;
217	mTempVertex.position.z = z;
218
219	// update bounds
220	mAABB.merge(mTempVertex.position);
221	mRadius = std::max(mRadius, mTempVertex.position.length());
222
223	// reset current texture coord
224	mTexCoordIndex = 0;
225
226	mTempVertexPending = true;
227	}
228	//-----------------------------------------------------------------------------
229	void ManualObject::normal(const Vector3& norm)
230	{
231	normal(norm.x, norm.y, norm.z);
232	}
233	//-----------------------------------------------------------------------------
234	void ManualObject::normal(Real x, Real y, Real z)
235	{
236	if (!mCurrentSection)
237	{
238	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
239	"You must call begin() before this method",
240	"ManualObject::normal");
241	}
242	if (mFirstVertex)
243	{
244	// defining declaration
245	mCurrentSection->getRenderOperation()->vertexData->vertexDeclaration
246	->addElement(0, mDeclSize, VET_FLOAT3, VES_NORMAL);
247	mDeclSize += VertexElement::getTypeSize(VET_FLOAT3);
248	}
249	mTempVertex.normal.x = x;
250	mTempVertex.normal.y = y;
251	mTempVertex.normal.z = z;
252	}
253	//-----------------------------------------------------------------------------
254	void ManualObject::textureCoord(Real u)
255	{
256	if (!mCurrentSection)
257	{
258	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
259	"You must call begin() before this method",
260	"ManualObject::textureCoord");
261	}
262	if (mFirstVertex)
263	{
264	// defining declaration
265	mCurrentSection->getRenderOperation()->vertexData->vertexDeclaration
266	->addElement(0, mDeclSize, VET_FLOAT1, VES_TEXTURE_COORDINATES, mTexCoordIndex);
267	mDeclSize += VertexElement::getTypeSize(VET_FLOAT1);
268	}
269	mTempVertex.texCoordDims[mTexCoordIndex] = 1;
270	mTempVertex.texCoord[mTexCoordIndex].x = u;
271
272	++mTexCoordIndex;
273
274	}
275	//-----------------------------------------------------------------------------
276	void ManualObject::textureCoord(Real u, Real v)
277	{
278	if (!mCurrentSection)
279	{
280	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
281	"You must call begin() before this method",
282	"ManualObject::textureCoord");
283	}
284	if (mFirstVertex)
285	{
286	// defining declaration
287	mCurrentSection->getRenderOperation()->vertexData->vertexDeclaration
288	->addElement(0, mDeclSize, VET_FLOAT2, VES_TEXTURE_COORDINATES, mTexCoordIndex);
289	mDeclSize += VertexElement::getTypeSize(VET_FLOAT2);
290	}
291	mTempVertex.texCoordDims[mTexCoordIndex] = 2;
292	mTempVertex.texCoord[mTexCoordIndex].x = u;
293	mTempVertex.texCoord[mTexCoordIndex].y = v;
294
295	++mTexCoordIndex;
296	}
297	//-----------------------------------------------------------------------------
298	void ManualObject::textureCoord(Real u, Real v, Real w)
299	{
300	if (!mCurrentSection)
301	{
302	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
303	"You must call begin() before this method",
304	"ManualObject::textureCoord");
305	}
306	if (mFirstVertex)
307	{
308	// defining declaration
309	mCurrentSection->getRenderOperation()->vertexData->vertexDeclaration
310	->addElement(0, mDeclSize, VET_FLOAT3, VES_TEXTURE_COORDINATES, mTexCoordIndex);
311	mDeclSize += VertexElement::getTypeSize(VET_FLOAT3);
312	}
313	mTempVertex.texCoordDims[mTexCoordIndex] = 3;
314	mTempVertex.texCoord[mTexCoordIndex].x = u;
315	mTempVertex.texCoord[mTexCoordIndex].y = v;
316	mTempVertex.texCoord[mTexCoordIndex].z = w;
317
318	++mTexCoordIndex;
319	}
320	//-----------------------------------------------------------------------------
321	void ManualObject::textureCoord(const Vector2& uv)
322	{
323	textureCoord(uv.x, uv.y);
324	}
325	//-----------------------------------------------------------------------------
326	void ManualObject::textureCoord(const Vector3& uvw)
327	{
328	textureCoord(uvw.x, uvw.y, uvw.z);
329	}
330	//-----------------------------------------------------------------------------
331	void ManualObject::colour(const ColourValue& col)
332	{
333	colour(col.r, col.g, col.b, col.a);
334	}
335	//-----------------------------------------------------------------------------
336	void ManualObject::colour(Real r, Real g, Real b, Real a)
337	{
338	if (!mCurrentSection)
339	{
340	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
341	"You must call begin() before this method",
342	"ManualObject::colour");
343	}
344	if (mFirstVertex)
345	{
346	// defining declaration
347	mCurrentSection->getRenderOperation()->vertexData->vertexDeclaration
348	->addElement(0, mDeclSize, VET_COLOUR, VES_DIFFUSE);
349	mDeclSize += VertexElement::getTypeSize(VET_COLOUR);
350	}
351	mTempVertex.colour.r = r;
352	mTempVertex.colour.g = g;
353	mTempVertex.colour.b = b;
354	mTempVertex.colour.a = a;
355
356	}
357	//-----------------------------------------------------------------------------
358	void ManualObject::index(uint16 idx)
359	{
360	if (!mCurrentSection)
361	{
362	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
363	"You must call begin() before this method",
364	"ManualObject::index");
365	}
366	mAnyIndexed = true;
367	// make sure we have index data
368	RenderOperation* rop = mCurrentSection->getRenderOperation();
369	if (!rop->indexData)
370	{
371	rop->indexData = new IndexData();
372	rop->indexData->indexCount = 0;
373	rop->useIndexes = true;
374	}
375	resizeTempIndexBufferIfNeeded(++rop->indexData->indexCount);
376
377	mTempIndexBuffer[rop->indexData->indexCount - 1] = idx;
378	}
379	//-----------------------------------------------------------------------------
380	void ManualObject::triangle(uint16 i1, uint16 i2, uint16 i3)
381	{
382	if (!mCurrentSection)
383	{
384	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
385	"You must call begin() before this method",
386	"ManualObject::index");
387	}
388	if (mCurrentSection->getRenderOperation()->operationType !=
389	RenderOperation::OT_TRIANGLE_LIST)
390	{
391	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
392	"This method is only valid on triangle lists",
393	"ManualObject::index");
394	}
395
396	index(i1);
397	index(i2);
398	index(i3);
399	}
400	//-----------------------------------------------------------------------------
401	void ManualObject::quad(uint16 i1, uint16 i2, uint16 i3, uint16 i4)
402	{
403	// first tri
404	triangle(i1, i2, i3);
405	// second tri
406	triangle(i3, i4, i1);
407	}
408	//-----------------------------------------------------------------------------
409	void ManualObject::copyTempVertexToBuffer(void)
410	{
411	mTempVertexPending = false;
412	RenderOperation* rop = mCurrentSection->getRenderOperation();
413	if (rop->vertexData->vertexCount == 0)
414	{
415	// first vertex, autoorganise decl
416	VertexDeclaration* oldDcl = rop->vertexData->vertexDeclaration;
417	rop->vertexData->vertexDeclaration =
418	oldDcl->getAutoOrganisedDeclaration(false, false);
419	HardwareBufferManager::getSingleton().destroyVertexDeclaration(oldDcl);
420	}
421	resizeTempVertexBufferIfNeeded(++rop->vertexData->vertexCount);
422
423	// get base pointer
424	char* pBase = mTempVertexBuffer + (mDeclSize * (rop->vertexData->vertexCount-1));
425	const VertexDeclaration::VertexElementList& elemList =
426	rop->vertexData->vertexDeclaration->getElements();
427	for (VertexDeclaration::VertexElementList::const_iterator i = elemList.begin();
428	i != elemList.end(); ++i)
429	{
430	float* pFloat;
431	RGBA* pRGBA;
432	const VertexElement& elem = *i;
433	switch(elem.getType())
434	{
435	case VET_FLOAT1:
436	case VET_FLOAT2:
437	case VET_FLOAT3:
438	elem.baseVertexPointerToElement(pBase, &pFloat);
439	break;
440	case VET_COLOUR:
441	case VET_COLOUR_ABGR:
442	case VET_COLOUR_ARGB:
443	elem.baseVertexPointerToElement(pBase, &pRGBA);
444	break;
445	};
446
447
448	RenderSystem* rs;
449	unsigned short dims;
450	switch(elem.getSemantic())
451	{
452	case VES_POSITION:
453	*pFloat++ = mTempVertex.position.x;
454	*pFloat++ = mTempVertex.position.y;
455	*pFloat++ = mTempVertex.position.z;
456	break;
457	case VES_NORMAL:
458	*pFloat++ = mTempVertex.normal.x;
459	*pFloat++ = mTempVertex.normal.y;
460	*pFloat++ = mTempVertex.normal.z;
461	break;
462	case VES_TEXTURE_COORDINATES:
463	dims = VertexElement::getTypeCount(elem.getType());
464	for (ushort t = 0; t < dims; ++t)
465	*pFloat++ = mTempVertex.texCoord[elem.getIndex()].val[t];
466	break;
467	case VES_DIFFUSE:
468	rs = Root::getSingleton().getRenderSystem();
469	if (rs)
470	rs->convertColourValue(mTempVertex.colour, pRGBA++);
471	else
472	*pRGBA++ = mTempVertex.colour.getAsRGBA(); // pick one!
473	break;
474	};
475
476	}
477
478	}
479	//-----------------------------------------------------------------------------
480	void ManualObject::end(void)
481	{
482	if (!mCurrentSection)
483	{
484	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
485	"You cannot call end() until after you call begin()",
486	"ManualObject::end");
487	}
488	if (mTempVertexPending)
489	{
490	// bake current vertex
491	copyTempVertexToBuffer();
492	}
493
494	// Bake the real buffers
495	RenderOperation* rop = mCurrentSection->getRenderOperation();
496	HardwareVertexBufferSharedPtr vbuf =
497	HardwareBufferManager::getSingleton().createVertexBuffer(
498	mDeclSize,
499	rop->vertexData->vertexCount,
500	HardwareBuffer::HBU_STATIC_WRITE_ONLY);
501	rop->vertexData->vertexBufferBinding->setBinding(0, vbuf);
502	vbuf->writeData(0, vbuf->getSizeInBytes(), mTempVertexBuffer, true);
503
504	if(rop->useIndexes)
505	{
506	rop->indexData->indexBuffer =
507	HardwareBufferManager::getSingleton().createIndexBuffer(
508	HardwareIndexBuffer::IT_16BIT,
509	rop->indexData->indexCount,
510	HardwareBuffer::HBU_STATIC_WRITE_ONLY);
511	rop->indexData->indexBuffer->writeData(
512	0, rop->indexData->indexBuffer->getSizeInBytes(),
513	mTempIndexBuffer, true);
514	}
515
516	mCurrentSection = 0;
517	resetTempAreas();
518
519	}
520	//-----------------------------------------------------------------------------
521	MeshPtr ManualObject::convertToMesh(const String& meshName, const String& groupName)
522	{
523	if (mCurrentSection)
524	{
525	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
526	"You cannot call convertToMesh() whilst you are in the middle of "
527	"defining the object; call end() first.",
528	"ManualObject::convertToMesh");
529	}
530	if (mSectionList.empty())
531	{
532	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
533	"No data defined to convert to a mesh.",
534	"ManualObject::convertToMesh");
535	}
536	for (SectionList::iterator i = mSectionList.begin(); i != mSectionList.end(); ++i)
537	{
538	ManualObjectSection* sec = *i;
539	if (!sec->getRenderOperation()->useIndexes)
540	{
541	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
542	"Only indexed geometry may be converted to a mesh.",
543	"ManualObject::convertToMesh");
544	}
545	}
546	MeshPtr m = MeshManager::getSingleton().createManual(meshName, groupName);
547
548	for (SectionList::iterator i = mSectionList.begin(); i != mSectionList.end(); ++i)
549	{
550	ManualObjectSection* sec = *i;
551	RenderOperation* rop = sec->getRenderOperation();
552	SubMesh* sm = m->createSubMesh();
553	sm->useSharedVertices = false;
554	sm->operationType = rop->operationType;
555	sm->setMaterialName(sec->getMaterialName());
556	// Copy vertex data; replicate buffers too
557	sm->vertexData = rop->vertexData->clone(true);
558	// Copy index data; replicate buffers too
559	sm->indexData = rop->indexData->clone(true);
560	}
561	// update bounds
562	m->_setBounds(mAABB);
563	m->_setBoundingSphereRadius(mRadius);
564
565	m->load();
566
567	return m;
568
569
570	}
571	//-----------------------------------------------------------------------------
572	const String& ManualObject::getMovableType(void) const
573	{
574	return ManualObjectFactory::FACTORY_TYPE_NAME;
575	}
576	//-----------------------------------------------------------------------------
577	const AxisAlignedBox& ManualObject::getBoundingBox(void) const
578	{
579	return mAABB;
580	}
581	//-----------------------------------------------------------------------------
582	Real ManualObject::getBoundingRadius(void) const
583	{
584	return mRadius;
585	}
586	//-----------------------------------------------------------------------------
587	void ManualObject::_updateRenderQueue(RenderQueue* queue)
588	{
589	for (SectionList::iterator i = mSectionList.begin(); i != mSectionList.end(); ++i)
590	{
591	if (mRenderQueueIDSet)
592	queue->addRenderable(*i, mRenderQueueID);
593	else
594	queue->addRenderable(*i);
595	}
596	}
597	//-----------------------------------------------------------------------------
598	EdgeData* ManualObject::getEdgeList(void)
599	{
600	// Build on demand
601	if (!mEdgeList && mAnyIndexed)
602	{
603	EdgeListBuilder eb;
604	size_t vertexSet = 0;
605	for (SectionList::iterator i = mSectionList.begin(); i != mSectionList.end(); ++i)
606	{
607	RenderOperation* rop = (*i)->getRenderOperation();
608	// Only indexed geometry supported for stencil shadows
609	if (rop->useIndexes)
610	{
611	eb.addVertexData(rop->vertexData);
612	eb.addIndexData(rop->indexData, vertexSet++);
613	}
614	}
615
616	mEdgeList = eb.build();
617
618	}
619	return mEdgeList;
620	}
621	//-----------------------------------------------------------------------------
622	ShadowCaster::ShadowRenderableListIterator
623	ManualObject::getShadowVolumeRenderableIterator(
624	ShadowTechnique shadowTechnique, const Light* light,
625	HardwareIndexBufferSharedPtr* indexBuffer,
626	bool extrude, Real extrusionDistance, unsigned long flags)
627	{
628	assert(indexBuffer && "Only external index buffers are supported right now");
629	assert((*indexBuffer)->getType() == HardwareIndexBuffer::IT_16BIT &&
630	"Only 16-bit indexes supported for now");
631
632	// Calculate the object space light details
633	Vector4 lightPos = light->getAs4DVector();
634	Matrix4 world2Obj = mParentNode->_getFullTransform().inverse();
635	lightPos = world2Obj * lightPos;
636
637
638	// Init shadow renderable list if required (only allow indexed)
639	bool init = mShadowRenderables.empty() && mAnyIndexed;
640
641	EdgeData::EdgeGroupList::iterator egi;
642	ShadowRenderableList::iterator si, siend;
643	ManualObjectSectionShadowRenderable* esr = 0;
644	SectionList::iterator seci;
645	if (init)
646	mShadowRenderables.resize(mEdgeList->edgeGroups.size());
647
648	siend = mShadowRenderables.end();
649	egi = mEdgeList->edgeGroups.begin();
650	seci = mSectionList.begin();
651	for (si = mShadowRenderables.begin(); si != siend; ++si, ++egi, ++seci)
652	{
653	if (init)
654	{
655	// Create a new renderable, create a separate light cap if
656	// we're using a vertex program (either for this model, or
657	// for extruding the shadow volume) since otherwise we can
658	// get depth-fighting on the light cap
659	MaterialPtr mat = (*seci)->getMaterial();
660	mat->load();
661	bool vertexProgram = false;
662	Technique* t = mat->getBestTechnique();
663	for (int p = 0; p < t->getNumPasses(); ++p)
664	{
665	Pass* pass = t->getPass(p);
666	if (pass->hasVertexProgram())
667	{
668	vertexProgram = true;
669	break;
670	}
671	}
672	*si = new ManualObjectSectionShadowRenderable(this, indexBuffer,
673	egi->vertexData, vertexProgram \|\| !extrude);
674	}
675	// Get shadow renderable
676	esr = static_cast<ManualObjectSectionShadowRenderable>(si);
677	HardwareVertexBufferSharedPtr esrPositionBuffer = esr->getPositionBuffer();
678	// Extrude vertices in software if required
679	if (extrude)
680	{
681	extrudeVertices(esrPositionBuffer,
682	egi->vertexData->vertexCount,
683	lightPos, extrusionDistance);
684
685	}
686
687	}
688	// Calc triangle light facing
689	updateEdgeListLightFacing(mEdgeList, lightPos);
690
691	// Generate indexes and update renderables
692	generateShadowVolume(mEdgeList, *indexBuffer, light,
693	mShadowRenderables, flags);
694
695
696	return ShadowRenderableListIterator(
697	mShadowRenderables.begin(), mShadowRenderables.end());
698
699
700	}
701	//-----------------------------------------------------------------------------
702	//-----------------------------------------------------------------------------
703	//-----------------------------------------------------------------------------
704	ManualObject::ManualObjectSection::ManualObjectSection(ManualObject* parent,
705	const String& materialName, RenderOperation::OperationType opType)
706	: mParent(parent), mMaterialName(materialName)
707	{
708	mRenderOperation.operationType = opType;
709	// default to no indexes unless we're told
710	mRenderOperation.useIndexes = false;
711	mRenderOperation.vertexData = new VertexData();
712	mRenderOperation.vertexData->vertexCount = 0;
713
714	}
715	//-----------------------------------------------------------------------------
716	ManualObject::ManualObjectSection::~ManualObjectSection()
717	{
718	delete mRenderOperation.vertexData;
719	delete mRenderOperation.indexData; // ok to delete 0
720	}
721	//-----------------------------------------------------------------------------
722	RenderOperation* ManualObject::ManualObjectSection::getRenderOperation(void)
723	{
724	return &mRenderOperation;
725	}
726	//-----------------------------------------------------------------------------
727	const MaterialPtr& ManualObject::ManualObjectSection::getMaterial(void) const
728	{
729	if (mMaterial.isNull())
730	{
731	// Load from default group. If user wants to use alternate groups,
732	// they can define it and preload
733	mMaterial = MaterialManager::getSingleton().load(mMaterialName,
734	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
735	}
736	return mMaterial;
737	}
738	//-----------------------------------------------------------------------------
739	void ManualObject::ManualObjectSection::getRenderOperation(RenderOperation& op)
740	{
741	// direct copy
742	op = mRenderOperation;
743	}
744	//-----------------------------------------------------------------------------
745	void ManualObject::ManualObjectSection::getWorldTransforms(Matrix4* xform) const
746	{
747	xform[0] = mParent->_getParentNodeFullTransform();
748	}
749	//-----------------------------------------------------------------------------
750	const Quaternion& ManualObject::ManualObjectSection::getWorldOrientation(void) const
751	{
752	return mParent->getParentNode()->_getDerivedOrientation();
753	}
754	//-----------------------------------------------------------------------------
755	const Vector3& ManualObject::ManualObjectSection::getWorldPosition(void) const
756	{
757	return mParent->getParentNode()->_getDerivedPosition();
758	}
759	//-----------------------------------------------------------------------------
760	Real ManualObject::ManualObjectSection::getSquaredViewDepth(const Ogre::Camera *cam) const
761	{
762	Node* n = mParent->getParentNode();
763	assert(n);
764	return n->getSquaredViewDepth(cam);
765	}
766	//-----------------------------------------------------------------------------
767	const LightList& ManualObject::ManualObjectSection::getLights(void) const
768	{
769	SceneNode* n = mParent->getParentSceneNode();
770	assert(n);
771	return n->findLights(mParent->getBoundingRadius());
772	}
773	//-----------------------------------------------------------------------------
774	//--------------------------------------------------------------------------
775	ManualObject::ManualObjectSectionShadowRenderable::ManualObjectSectionShadowRenderable(
776	ManualObject* parent, HardwareIndexBufferSharedPtr* indexBuffer,
777	const VertexData* vertexData, bool createSeparateLightCap,
778	bool isLightCap)
779	: mParent(parent)
780	{
781	// Initialise render op
782	mRenderOp.indexData = new IndexData();
783	mRenderOp.indexData->indexBuffer = *indexBuffer;
784	mRenderOp.indexData->indexStart = 0;
785	// index start and count are sorted out later
786
787	// Create vertex data which just references position component (and 2 component)
788	mRenderOp.vertexData = new VertexData();
789	mRenderOp.vertexData->vertexDeclaration =
790	HardwareBufferManager::getSingleton().createVertexDeclaration();
791	mRenderOp.vertexData->vertexBufferBinding =
792	HardwareBufferManager::getSingleton().createVertexBufferBinding();
793	// Map in position data
794	mRenderOp.vertexData->vertexDeclaration->addElement(0,0,VET_FLOAT3, VES_POSITION);
795	ushort origPosBind =
796	vertexData->vertexDeclaration->findElementBySemantic(VES_POSITION)->getSource();
797	mPositionBuffer = vertexData->vertexBufferBinding->getBuffer(origPosBind);
798	mRenderOp.vertexData->vertexBufferBinding->setBinding(0, mPositionBuffer);
799	// Map in w-coord buffer (if present)
800	if(!vertexData->hardwareShadowVolWBuffer.isNull())
801	{
802	mRenderOp.vertexData->vertexDeclaration->addElement(1,0,VET_FLOAT1, VES_TEXTURE_COORDINATES, 0);
803	mWBuffer = vertexData->hardwareShadowVolWBuffer;
804	mRenderOp.vertexData->vertexBufferBinding->setBinding(1, mWBuffer);
805	}
806	// Use same vertex start as input
807	mRenderOp.vertexData->vertexStart = vertexData->vertexStart;
808
809	if (isLightCap)
810	{
811	// Use original vertex count, no extrusion
812	mRenderOp.vertexData->vertexCount = vertexData->vertexCount;
813	}
814	else
815	{
816	// Vertex count must take into account the doubling of the buffer,
817	// because second half of the buffer is the extruded copy
818	mRenderOp.vertexData->vertexCount =
819	vertexData->vertexCount * 2;
820	if (createSeparateLightCap)
821	{
822	// Create child light cap
823	mLightCap = new ManualObjectSectionShadowRenderable(parent,
824	indexBuffer, vertexData, false, true);
825	}
826	}
827	}
828	//--------------------------------------------------------------------------
829	ManualObject::ManualObjectSectionShadowRenderable::~ManualObjectSectionShadowRenderable()
830	{
831	delete mRenderOp.indexData;
832	delete mRenderOp.vertexData;
833	}
834	//--------------------------------------------------------------------------
835	void ManualObject::ManualObjectSectionShadowRenderable::getWorldTransforms(
836	Matrix4* xform) const
837	{
838	// pretransformed
839	*xform = mParent->_getParentNodeFullTransform();
840	}
841	//--------------------------------------------------------------------------
842	const Quaternion&
843	ManualObject::ManualObjectSectionShadowRenderable::getWorldOrientation(void) const
844	{
845	return mParent->getParentNode()->_getDerivedOrientation();
846	}
847	//--------------------------------------------------------------------------
848	const Vector3&
849	ManualObject::ManualObjectSectionShadowRenderable::getWorldPosition(void) const
850	{
851	return mParent->getParentNode()->_getDerivedPosition();
852	}
853	//-----------------------------------------------------------------------------
854	//-----------------------------------------------------------------------------
855	String ManualObjectFactory::FACTORY_TYPE_NAME = "ManualObject";
856	//-----------------------------------------------------------------------------
857	const String& ManualObjectFactory::getType(void) const
858	{
859	return FACTORY_TYPE_NAME;
860	}
861	//-----------------------------------------------------------------------------
862	MovableObject* ManualObjectFactory::createInstanceImpl(
863	const String& name, const NameValuePairList* params)
864	{
865	return new ManualObject(name);
866	}
867	//-----------------------------------------------------------------------------
868	void ManualObjectFactory::destroyInstance( MovableObject* obj)
869	{
870	delete obj;
871	}
872
873
874
875	}

Note: See TracBrowser for help on using the repository browser.

Context Navigation

source: OGRE/trunk/ogrenew/OgreMain/src/OgreManualObject.cpp @ 692

Download in other formats: