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source: downloads/ColladaPlugin/src/OgreColladaScene.cpp @ 50

Last change on this file since 50 was 21, checked in by nicolasc, 18 years ago
added ogreode and Colladaplugin
File size: 20.1 KB

Line
1	/**
2	* This source file is part of OgreColladaPlugin
3	* an addon for OGRE (Object-oriented Graphics Rendering Engine)
4	* For the latest info, see http://www.ogre3d.org/
5	*
6	* This program is free software; you can redistribute it and/or modify it under
7	* the terms of the GNU Lesser General Public License as published by the Free Software
8	* Foundation; either version 2 of the License, or (at your option) any later
9	* version.
10
11	* This program is distributed in the hope that it will be useful, but WITHOUT
12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13	* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14
15	* You should have received a copy of the GNU Lesser General Public License along with
16	* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
17	* Place - Suite 330, Boston, MA 02111-1307, USA, or go to
18	* http://www.gnu.org/copyleft/lesser.txt.
19	*
20	* @author Philipp Hartl
21	* @see README
22	*/
23
24	#include "OgreColladaScene.h"
25	#include "OgreColladaDocument.h"
26	#include "OgreColladaGeometry.h"
27	#include "OgreColladaLibrary.h"
28	#include "OgreColladaSyntax.h"
29	#include "OgreColladaUtils.h"
30
31	#include "OgreStringVector.h"
32	#include "OgreAxisAlignedBox.h"
33	#include "OgreStringConverter.h"
34	#include "OgreSceneManager.h"
35
36
37	namespace Ogre
38	{
39	//-------------------------------------------------------------------------
40	ColladaBoundingBox::ColladaBoundingBox(ColladaSceneNode *p) : ColladaNodeElement(p)
41	{
42	mMin = Vector3::ZERO;
43	mMax = Vector3::ZERO;
44	}
45
46	//-------------------------------------------------------------------------
47	ColladaBoundingBox::ColladaBoundingBox(const Vector3 &min, const Vector3 &max)
48	: ColladaNodeElement(NULL), mMin(min), mMax(max) { }
49
50	//-------------------------------------------------------------------------
51	ColladaBoundingBox::~ColladaBoundingBox(void) { }
52
53	//-------------------------------------------------------------------------
54	void ColladaBoundingBox::doImport(xmlNode *node)
55	{
56	if (node == NULL) return;
57
58	for (xmlNode *c = node->children; c != NULL; c = c->next)
59	{
60	if (c->type != XML_ELEMENT_NODE) continue;
61	String tagname = (const char *)c->name;
62
63	// <min>
64	if (tagname == CS_ELM_MIN)
65	{
66	// fill up minimum vector
67	mMin = StringConverter::parseVector3(ColladaUtils::getContentDirect(c));
68	}
69	// <max>
70	else if (tagname == CS_ELM_MAX)
71	{
72	// fill up maximum vector
73	mMax = StringConverter::parseVector3(ColladaUtils::getContentDirect(c));
74	}
75	// unknown or unsupported
76	else
77	{
78	LogManager::getSingleton().logMessage("ColladaBoundingBox::doImport - unknown child: " + tagname);
79	}
80	}
81	}
82
83	//-------------------------------------------------------------------------
84	AxisAlignedBox ColladaBoundingBox::getAABB(void) const
85	{
86	return AxisAlignedBox(mMin, mMax);
87	}
88
89	//-------------------------------------------------------------------------
90	float ColladaBoundingBox::getRadius(void) const
91	{
92	Vector3 dist = mMax - (mMax + mMin) * 0.5;
93	return dist.length();
94	}
95
96	//-------------------------------------------------------------------------
97	String ColladaBoundingBox::toString(void) const
98	{
99	return "min: " + StringConverter::toString(mMin) + " max: " + StringConverter::toString(mMax);
100	}
101
102	//-------------------------------------------------------------------------
103	// ColladaScene
104	//-------------------------------------------------------------------------
105
106	//-------------------------------------------------------------------------
107	ColladaSceneNode::ColladaSceneNode(ColladaDocument doc, xmlNode node) : ColladaEntity(doc, node)
108	{
109	mType = NODE;
110	mBB = NULL;
111	mParent = NULL;
112	mEntity = NULL;
113	}
114
115	//-------------------------------------------------------------------------
116	ColladaSceneNode::~ColladaSceneNode(void)
117	{
118	for (ColladaSceneNodePtrVector::iterator it = mChilds.begin(); it != mChilds.end(); ++it)
119	{
120	OGRE_DELETE(*it);
121	}
122	mChilds.clear();
123	mParent = NULL;
124	mEntity = NULL; // the entities will be cleared by the library container
125
126	for (ColladaTransformPtrVector::iterator jt = mTransforms.begin(); jt != mTransforms.end(); ++jt)
127	{
128	OGRE_DELETE(*jt);
129	}
130	mTransforms.clear();
131
132	OGRE_DELETE(mBB);
133	}
134
135	//-------------------------------------------------------------------------
136	void ColladaSceneNode::attachEntityToOgreSceneNode(SceneNode *ogrenode) const
137	{
138	if (mEntity == NULL \|\| ogrenode == NULL) return;
139
140	if (mEntity->getEntityType() == GEOMETRY \|\|
141	mEntity->getEntityType() == LIGHT \|\|
142	mEntity->getEntityType() == CAMERA)
143	{
144	// the geometry need some special data
145	if (mEntity->getEntityType() == GEOMETRY)
146	{
147	ColladaGeometry geo = static_cast<ColladaGeometry >(mEntity);
148	geo->setEntityName(mId); // a unique name for the ogre entity, should not be NULL!
149	// geo->setBoundingBox(mBB); // a bounding box, can be NULL
150	}
151
152	// create an ogre entity
153	MovableObject *mo = mEntity->getOgreInstance();
154	if (mo != NULL) ogrenode->attachObject(mo);
155	}
156	}
157
158	//-------------------------------------------------------------------------
159	void ColladaSceneNode::attachTransformsToOgreSceneNode(SceneNode *ogrenode) const
160	{
161	if (ogrenode == NULL \|\| mTransforms.empty()) return;
162
163	for (ColladaTransformPtrVector::const_iterator it = mTransforms.begin(); it != mTransforms.end(); ++it)
164	{
165	if ((*it)->getType() == ColladaTransform::ROTATE)
166	{
167	// rotation has local affects
168	ColladaTRotate r = static_cast<ColladaTRotate >(*it);
169	Quaternion rot(Degree(r->getAngle()), r->getAxis());
170	mDoc->correctAxis(rot);
171	ogrenode->rotate(rot);
172	}
173	else if ((*it)->getType() == ColladaTransform::SCALE)
174	{
175	ogrenode->scale(static_cast<ColladaTScale >(it)->getScale());
176	}
177	else if ((*it)->getType() == ColladaTransform::TRANSLATE)
178	{
179	// translation is relative to parent
180	ogrenode->translate(static_cast<ColladaTTranslate >(it)->getTranslate());
181	}
182	}
183
184	// correct transforms for ogre axis
185	Vector3 pos = ogrenode->getPosition();
186	mDoc->correctAxis(pos);
187	ogrenode->setPosition(pos);
188	}
189
190	//-------------------------------------------------------------------------
191	void ColladaSceneNode::createOgreInstance(SceneNode *ogrenode) const
192	{
193	if (ogrenode == NULL) ogrenode = mDoc->getSceneManager()->getRootSceneNode();
194
195	if (mType == NODE)
196	{
197	// transforms
198	attachTransformsToOgreSceneNode(ogrenode);
199
200	// boundingbox
201
202	// entity
203	attachEntityToOgreSceneNode(ogrenode);
204	}
205
206	for (ColladaSceneNodePtrVector::const_iterator it = mChilds.begin(); it != mChilds.end(); ++it)
207	{
208	// the new child will be automatically attached to the scene graph
209	(it)->createOgreInstance(ogrenode->createChildSceneNode((it)->mId));
210	}
211	}
212
213	//-------------------------------------------------------------------------
214	bool ColladaSceneNode::doImport(void)
215	{
216	if (mLoaded) return mStatus;
217	else mLoaded = true;
218
219	// get unique identifier of scene
220	initialise();
221
222	// if the xmlNode is a <node> there could be a type attribute [JOINT or NODE] (last is default)
223	String type = ColladaUtils::getProperty(mNode, CS_ATR_TYPE);
224	if (!type.empty())
225	{
226	if (type == CS_VAL_NODE_TYPE_JOINT) mType = JOINT;
227	}
228
229	// walk through child elements, the order is important
230	for (xmlNode *child = mNode->children; child != NULL; child = child->next)
231	{
232	// we are interested on element nodes only
233	if (child->type != XML_ELEMENT_NODE) continue;
234
235	String tagname = (const char *)child->name;
236
237	// look for <extra>
238	if (tagname == CS_ELM_EXTRA)
239	{
240	importExtra(child);
241	}
242	// look for <boundingbox>
243	else if (tagname == CS_ELM_BOUNDINGBOX)
244	{
245	mBB = new ColladaBoundingBox(this);
246	mBB->doImport(child);
247	}
248	// look for <node> (build up subtree)
249	else if (tagname == CS_ELM_NODE)
250	{
251	ColladaSceneNode *snode = new ColladaSceneNode(mDoc, child);
252	if (!snode->doImport()) return false;
253	// each node should be unique
254	snode->mParent = this;
255	mChilds.push_back(snode);
256	}
257	// look for <instance> and link entity
258	else if (tagname == CS_ELM_INSTANCE)
259	{
260	importInstance(child);
261	}
262	// look for transformations <lookat>, <matrix> ... <translate>
263	else if (tagname == CS_ELM_LOOKAT \|\|
264	tagname == CS_ELM_MATRIX \|\|
265	tagname == CS_ELM_PERSPECTIVE \|\|
266	tagname == CS_ELM_ROTATE \|\|
267	tagname == CS_ELM_SCALE \|\|
268	tagname == CS_ELM_SKEW \|\|
269	tagname == CS_ELM_TRANSLATE)
270	{
271	ColladaTransform *t;
272	if (tagname == CS_ELM_LOOKAT) t = new ColladaTLookAt(this);
273	else if (tagname == CS_ELM_MATRIX) t = new ColladaTMatrix(this);
274	else if (tagname == CS_ELM_PERSPECTIVE) t = new ColladaTPerspective(this);
275	else if (tagname == CS_ELM_ROTATE) t = new ColladaTRotate(this);
276	else if (tagname == CS_ELM_SCALE) t = new ColladaTScale(this);
277	else if (tagname == CS_ELM_SKEW) t = new ColladaTSkew(this);
278	else if (tagname == CS_ELM_TRANSLATE) t = new ColladaTTranslate(this);
279	else t = NULL;
280
281	if (t != NULL)
282	{
283	t->doImport(child);
284	mTransforms.push_back(t);
285	}
286	}
287	else
288	{
289	LogManager::getSingleton().logMessage("ColladaSceneNode::doImport - unknown child: " + tagname + " of " + mId);
290	}
291	}
292
293	mStatus = true;
294	return mStatus;
295	}
296
297	//-------------------------------------------------------------------------
298	ColladaSceneNode *ColladaSceneNode::getNode(const String &id)
299	{
300	if (this->mId == id) return this;
301
302	ColladaSceneNode *tmp = NULL;
303	for (ColladaSceneNodePtrVector::const_iterator it = mChilds.begin(); it != mChilds.end(); ++it)
304	{
305	tmp = (*it)->getNode(id);
306	if (tmp != NULL) break;
307	}
308	return tmp;
309	}
310
311	//-------------------------------------------------------------------------
312	void ColladaSceneNode::importExtra(xmlNode *node)
313	{
314	// not yet implemented
315	// scene extra information
316	}
317
318	//-------------------------------------------------------------------------
319	void ColladaSceneNode::importInstance(xmlNode *node)
320	{
321	String url = ColladaUtils::getProperty(node, CS_ATR_URL);
322	if (url.empty())
323	{
324	LogManager::getSingleton().logMessage("ColladaSceneNode::importInstance - no instance url is given!");
325	return;
326	}
327
328	// local reference
329	if (url.find("#") == 0)
330	{
331	// we do not need the # sign
332	url.erase(0,1);
333
334	// we do not know where the instance belongs to, so let library to find out
335	mEntity = mDoc->getLibrary()->importInstance(url);
336	if (mEntity == NULL)
337	{
338	LogManager::getSingleton().logMessage("ColladaSceneNode::importInstance - creating instance of " + url + " failed");
339	}
340	}
341	// external reference
342	else
343	{
344	// not yet implemented !!
345	LogManager::getSingleton().logMessage("ColladaSceneNode::importInstance - external references are currently not implemented!");
346	}
347	}
348
349	//-------------------------------------------------------------------------
350	// ColladaTransform(s)
351	//-------------------------------------------------------------------------
352
353	//-------------------------------------------------------------------------
354	ColladaTLookAt::ColladaTLookAt(ColladaSceneNode *p) : ColladaTransform(p)
355	{
356	mMatrix = Matrix3::IDENTITY;
357	}
358
359	//-------------------------------------------------------------------------
360	ColladaTLookAt::~ColladaTLookAt(void) { }
361
362	//-------------------------------------------------------------------------
363	void ColladaTLookAt::doImport(xmlNode *node)
364	{
365	if (node == NULL) return;
366
367	String content = ColladaUtils::getContentDirect(node);
368	if (content.empty()) return;
369
370	StringVector lines = StringUtil::split(content,"\r\n");
371	if (lines.size() != 3) return;
372
373	uint i = 0;
374	for (StringVector::iterator it = lines.begin(); it != lines.end(); ++it)
375	{
376	uint j = 0;
377	StringUtil::trim(*it);
378	StringVector line = StringUtil::split(*it," ");
379	if (line.size() != 3) break;
380
381	for (StringVector::iterator jt = line.begin(); jt != line.end(); ++jt)
382	{
383	mMatrix[i][j] = StringConverter::parseReal(*jt);
384	j++;
385	}
386	i++;
387	}
388	}
389
390	//-------------------------------------------------------------------------
391	Matrix3 ColladaTLookAt::getMatrix3(void) const
392	{
393	return mMatrix;
394	}
395
396	//-------------------------------------------------------------------------
397	Matrix4 ColladaTLookAt::getMatrix4(void) const
398	{
399	return Matrix4(getMatrix3());
400	}
401
402	//-------------------------------------------------------------------------
403	Vector3 ColladaTLookAt::getEye(void) const
404	{
405	return Vector3(mMatrix[0][0], mMatrix[0][1], mMatrix[0][2]);
406	}
407
408	//-------------------------------------------------------------------------
409	Vector3 ColladaTLookAt::getTarget(void) const
410	{
411	return Vector3(mMatrix[1][0], mMatrix[1][1], mMatrix[1][2]);
412	}
413
414	//-------------------------------------------------------------------------
415	Vector3 ColladaTLookAt::getUp(void) const
416	{
417	return Vector3(mMatrix[1][0], mMatrix[1][1], mMatrix[1][2]);
418	}
419
420	//-------------------------------------------------------------------------
421	// ColladaTMatrix
422	//-------------------------------------------------------------------------
423
424	//-------------------------------------------------------------------------
425	ColladaTMatrix::ColladaTMatrix(ColladaSceneNode *p) : ColladaTransform(p)
426	{
427	mMatrix = Matrix4::IDENTITY;
428	}
429
430	//-------------------------------------------------------------------------
431	ColladaTMatrix::~ColladaTMatrix(void) { }
432
433	//-------------------------------------------------------------------------
434	void ColladaTMatrix::doImport(xmlNode *node)
435	{
436	if (node == NULL) return;
437
438	String content = ColladaUtils::getContentDirect(node);
439	if (content.empty()) return;
440
441	StringVector lines = StringUtil::split(content,"\r\n");
442	if (lines.size() != 4) return;
443
444	uint i = 0;
445	for (StringVector::iterator it = lines.begin(); it != lines.end(); ++it)
446	{
447	uint j = 0;
448	StringUtil::trim(*it);
449	StringVector line = StringUtil::split(*it," ");
450	if (line.size() != 4) break;
451
452	for (StringVector::iterator jt = line.begin(); jt != line.end(); ++jt)
453	{
454	mMatrix[i][j] = StringConverter::parseReal(*jt);
455	j++;
456	}
457	i++;
458	}
459	}
460
461	//-------------------------------------------------------------------------
462	Matrix4 ColladaTMatrix::getMatrix4(void) const
463	{
464	return mMatrix;
465	}
466
467	//-------------------------------------------------------------------------
468	// ColladaTPerspective
469	//-------------------------------------------------------------------------
470
471	//-------------------------------------------------------------------------
472	ColladaTPerspective::ColladaTPerspective(ColladaSceneNode *p) : ColladaTransform(p)
473	{
474	mFOV = 90;
475	}
476
477	//-------------------------------------------------------------------------
478	ColladaTPerspective::~ColladaTPerspective(void) { }
479
480	//-------------------------------------------------------------------------
481	void ColladaTPerspective::doImport(xmlNode *node)
482	{
483	if (node == NULL) return;
484
485	String content = ColladaUtils::getContentDirect(node);
486	if (content.empty()) return;
487
488	mFOV = StringConverter::parseReal(content);
489	}
490
491	//-------------------------------------------------------------------------
492	Matrix4 ColladaTPerspective::getMatrix4(void) const
493	{
494	return Matrix4::IDENTITY;
495	}
496
497	//-------------------------------------------------------------------------
498	// ColladaTRotate
499	//-------------------------------------------------------------------------
500
501	//-------------------------------------------------------------------------
502	ColladaTRotate::ColladaTRotate(ColladaSceneNode *p) : ColladaTransform(p)
503	{
504	mAxis = Vector3::ZERO;
505	mAngle = 0;
506	}
507
508	//-------------------------------------------------------------------------
509	ColladaTRotate::~ColladaTRotate(void) { }
510
511	//-------------------------------------------------------------------------
512	void ColladaTRotate::doImport(xmlNode *node)
513	{
514	if (node == NULL) return;
515
516	String content = ColladaUtils::getContentDirect(node);
517	if (content.empty()) return;
518
519	StringVector line = StringUtil::split(content," ");
520	if (line.size() != 4) return;
521
522	mAxis.x = StringConverter::parseReal(line.at(0));
523	mAxis.y = StringConverter::parseReal(line.at(1));
524	mAxis.z = StringConverter::parseReal(line.at(2));
525	mAngle = StringConverter::parseReal(line.at(3));
526	}
527
528	//-------------------------------------------------------------------------
529	Matrix3 ColladaTRotate::getMatrix3(void) const
530	{
531	Matrix3 m = Matrix3::IDENTITY;
532	m.FromAxisAngle(mAxis, Radian(Math::DegreesToRadians(mAngle)));
533	return m;
534	}
535
536	//-------------------------------------------------------------------------
537	Matrix4 ColladaTRotate::getMatrix4(void) const
538	{
539	return Matrix4(getMatrix3());
540	}
541
542	//-------------------------------------------------------------------------
543	// ColladaTScale
544	//-------------------------------------------------------------------------
545
546	//-------------------------------------------------------------------------
547	ColladaTScale::ColladaTScale(ColladaSceneNode *p) : ColladaTransform(p)
548	{
549	mScale = Vector3::ZERO;
550	}
551
552	//-------------------------------------------------------------------------
553	ColladaTScale::~ColladaTScale(void) { }
554
555	//-------------------------------------------------------------------------
556	void ColladaTScale::doImport(xmlNode *node)
557	{
558	if (node == NULL) return;
559
560	String content = ColladaUtils::getContentDirect(node);
561	if (content.empty()) return;
562
563	mScale = StringConverter::parseVector3(content);
564	}
565
566	//-------------------------------------------------------------------------
567	Matrix3 ColladaTScale::getMatrix3(void) const
568	{
569	Matrix3 m = Matrix3::IDENTITY;
570
571	m[0][0] = mScale.x;
572	m[1][1] = mScale.y;
573	m[2][2] = mScale.z;
574
575	return m;
576	}
577
578	//-------------------------------------------------------------------------
579	Matrix4 ColladaTScale::getMatrix4(void) const
580	{
581	Matrix4 m = Matrix4::IDENTITY;
582	m.setScale(mScale);
583	return m;
584	}
585
586	//-------------------------------------------------------------------------
587	// ColladaTSkew
588	//-------------------------------------------------------------------------
589
590	//-------------------------------------------------------------------------
591	ColladaTSkew::ColladaTSkew(ColladaSceneNode *p) : ColladaTransform(p)
592	{
593	mAngle = 0;
594	mRotation = Vector3::ZERO;
595	mTranslation = Vector3::ZERO;
596	}
597
598	//-------------------------------------------------------------------------
599	ColladaTSkew::~ColladaTSkew(void) { }
600
601	//-------------------------------------------------------------------------
602	void ColladaTSkew::doImport(xmlNode *node)
603	{
604	if (node == NULL) return;
605
606	String content = ColladaUtils::getContentDirect(node);
607	if (content.empty()) return;
608
609	StringVector line = StringUtil::split(content," ");
610	if (line.size() != 7) return;
611
612	mAngle = StringConverter::parseReal(line.at(0));
613
614	mRotation.x = StringConverter::parseReal(line.at(1));
615	mRotation.y = StringConverter::parseReal(line.at(2));
616	mRotation.z = StringConverter::parseReal(line.at(3));
617
618	mTranslation.x = StringConverter::parseReal(line.at(4));
619	mTranslation.y = StringConverter::parseReal(line.at(5));
620	mTranslation.z = StringConverter::parseReal(line.at(6));
621	}
622
623	//-------------------------------------------------------------------------
624	Matrix3 ColladaTSkew::getMatrix3(void) const
625	{
626	return Matrix3::IDENTITY;
627	}
628
629	//-------------------------------------------------------------------------
630	Matrix4 ColladaTSkew::getMatrix4(void) const
631	{
632	return Matrix4(getMatrix3());
633	}
634
635	//-------------------------------------------------------------------------
636	// ColladaTTranslate
637	//-------------------------------------------------------------------------
638
639	//-------------------------------------------------------------------------
640	ColladaTTranslate::ColladaTTranslate(ColladaSceneNode *p) : ColladaTransform(p)
641	{
642	mTranslate = Vector3::ZERO;
643	}
644
645	//-------------------------------------------------------------------------
646	ColladaTTranslate::~ColladaTTranslate(void) { }
647
648	//-------------------------------------------------------------------------
649	void ColladaTTranslate::doImport(xmlNode *node)
650	{
651	if (node == NULL) return;
652
653	String content = ColladaUtils::getContentDirect(node);
654	if (content.empty()) return;
655
656	mTranslate = StringConverter::parseVector3(content);
657	}
658
659	//-------------------------------------------------------------------------
660	Matrix4 ColladaTTranslate::getMatrix4(void) const
661	{
662	Matrix4 m = Matrix4::IDENTITY;
663	m.makeTrans(mTranslate);
664	return m;
665	}
666	}

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