summaryrefslogtreecommitdiff
path: root/indra/llprimitive/llmodel.h
blob: 96d4582b4f327bffe4dc5e99e0d0963a89f25d1b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
/** 
 * @file llmodel.h
 * @brief Model handling class definitions
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLMODEL_H
#define LL_LLMODEL_H

#include "llpointer.h"
#include "llvolume.h"
#include "v4math.h"
#include "m4math.h"
#include <queue>

#include <boost/align/aligned_allocator.hpp>

class daeElement;
class domMesh;

#define MAX_MODEL_FACES 8

class LLMeshSkinInfo 
{
public:
	LLMeshSkinInfo();
	LLMeshSkinInfo(LLSD& data);
	void fromLLSD(LLSD& data);
	LLSD asLLSD(bool include_joints, bool lock_scale_if_joint_position) const;

	LLUUID mMeshID;
	std::vector<std::string> mJointNames;
    mutable std::vector<S32> mJointNums;
    typedef std::vector<LLMatrix4a, boost::alignment::aligned_allocator<LLMatrix4a, 16>> matrix_list_t;
	matrix_list_t mInvBindMatrix;
	matrix_list_t mAlternateBindMatrix;

	LLMatrix4a mBindShapeMatrix;
	float mPelvisOffset;
    bool mLockScaleIfJointPosition;
    bool mInvalidJointsScrubbed;
    bool mJointNumsInitialized;
};

class LLModel : public LLVolume
{
public:

	enum
	{
		LOD_IMPOSTOR = 0,
		LOD_LOW,
		LOD_MEDIUM,
		LOD_HIGH,
		LOD_PHYSICS,
		NUM_LODS
	};
	
	enum EModelStatus
	{
		NO_ERRORS = 0,
		VERTEX_NUMBER_OVERFLOW, //vertex number is >= 65535.
		BAD_ELEMENT,
		INVALID_STATUS
	} ;

	//convex_hull_decomposition is a vector of convex hulls
	//each convex hull is a set of points
	typedef std::vector<std::vector<LLVector3> > convex_hull_decomposition;
	typedef std::vector<LLVector3> hull;
	
	class PhysicsMesh
	{
	public:
		std::vector<LLVector3> mPositions;
		std::vector<LLVector3> mNormals;

		void clear()
		{
			mPositions.clear();
			mNormals.clear();
		}

		bool empty() const
		{
			return mPositions.empty();
		}
	};

	class Decomposition
	{
	public:
		Decomposition() { }
		Decomposition(LLSD& data);
		void fromLLSD(LLSD& data);
		LLSD asLLSD() const;
		bool hasHullList() const;

		void merge(const Decomposition* rhs);

		LLUUID mMeshID;
		LLModel::convex_hull_decomposition mHull;
		LLModel::hull mBaseHull;

		std::vector<LLModel::PhysicsMesh> mMesh;
		LLModel::PhysicsMesh mBaseHullMesh;
		LLModel::PhysicsMesh mPhysicsShapeMesh;
	};

	LLModel(LLVolumeParams& params, F32 detail);
	~LLModel();

	bool loadModel(std::istream& is);
	bool loadSkinInfo(LLSD& header, std::istream& is);
	bool loadDecomposition(LLSD& header, std::istream& is);
	
	static LLSD writeModel(
		std::ostream& ostr,
		LLModel* physics,
		LLModel* high,
		LLModel* medium,
		LLModel* low,
		LLModel* imposotr,
		const LLModel::Decomposition& decomp,
		BOOL upload_skin,
		BOOL upload_joints,
        BOOL lock_scale_if_joint_position,
		BOOL nowrite = FALSE,
		BOOL as_slm = FALSE,
		int submodel_id = 0);

	static LLSD writeModelToStream(
		std::ostream& ostr,
		LLSD& mdl,
		BOOL nowrite = FALSE, BOOL as_slm = FALSE);
	
	void ClearFacesAndMaterials() { mVolumeFaces.clear(); mMaterialList.clear(); }

	std::string getName() const;
	EModelStatus getStatus() const {return mStatus;}
	static std::string getStatusString(U32 status) ;

	void setNumVolumeFaces(S32 count);
	void setVolumeFaceData(
		S32 f, 
		LLStrider<LLVector3> pos, 
		LLStrider<LLVector3> norm, 
		LLStrider<LLVector2> tc, 
		LLStrider<U16> ind, 
		U32 num_verts, 
		U32 num_indices);

	void generateNormals(F32 angle_cutoff);

	void addFace(const LLVolumeFace& face);

	void sortVolumeFacesByMaterialName();
	void normalizeVolumeFaces();
	void trimVolumeFacesToSize(U32 new_count = LL_SCULPT_MESH_MAX_FACES, LLVolume::face_list_t* remainder = NULL);
	void optimizeVolumeFaces();
	void offsetMesh( const LLVector3& pivotPoint );
	void getNormalizedScaleTranslation(LLVector3& scale_out, LLVector3& translation_out);
	LLVector3 getTransformedCenter(const LLMatrix4& mat);
	
	//reorder face list based on mMaterialList in this and reference so 
	//order matches that of reference (material ordering touchup)
	bool matchMaterialOrder(LLModel* ref, int& refFaceCnt, int& modelFaceCnt );
	bool isMaterialListSubset( LLModel* ref );
	bool needToAddFaces( LLModel* ref, int& refFaceCnt, int& modelFaceCnt );
	
	typedef std::vector<std::string> material_list;

	material_list mMaterialList;

	material_list& getMaterialList() { return mMaterialList; }

	//data used for skin weights
	class JointWeight
	{
	public:
		S32 mJointIdx;
		F32 mWeight;
		
		JointWeight()
		{
			mJointIdx = 0;
			mWeight = 0.f;
		}

		JointWeight(S32 idx, F32 weight)
			: mJointIdx(idx), mWeight(weight)
		{
		}

		bool operator<(const JointWeight& rhs) const
		{
			if (mWeight == rhs.mWeight)
			{
				return mJointIdx < rhs.mJointIdx;
			}

			return mWeight < rhs.mWeight;
		}

	};

	struct CompareWeightGreater
	{
		bool operator()(const JointWeight& lhs, const JointWeight& rhs)
		{
			return rhs < lhs; // strongest = first
		}
	};

	
	//Are the doubles the same w/in epsilon specified tolerance
	bool areEqual( double a, double b ) 
	{
		const float epsilon = 1e-5f;
		return (fabs((a - b)) < epsilon) ? true : false ;
	}
	//Make sure that we return false for any values that are within the tolerance for equivalence
	bool jointPositionalLookup( const LLVector3& a, const LLVector3& b ) 
	{
		 return ( areEqual( a[0],b[0]) && areEqual( a[1],b[1] ) && areEqual( a[2],b[2]) ) ? true : false;
	}

	//copy of position array for this model -- mPosition[idx].mV[X,Y,Z]
	std::vector<LLVector3> mPosition;

	//map of positions to skin weights --- mSkinWeights[pos].mV[0..4] == <joint_index>.<weight>
	//joint_index corresponds to mJointList
	typedef std::vector<JointWeight> weight_list;
	typedef std::map<LLVector3, weight_list > weight_map;
	weight_map mSkinWeights;

	//get list of weight influences closest to given position
	weight_list& getJointInfluences(const LLVector3& pos);

	LLMeshSkinInfo mSkinInfo;
	
	std::string mRequestedLabel; // name requested in UI, if any.
	std::string mLabel; // name computed from dae.

	LLVector3 mNormalizedScale;
	LLVector3 mNormalizedTranslation;

	float	mPelvisOffset;
	// convex hull decomposition
	S32 mDecompID;
	
	void setConvexHullDecomposition(
		const convex_hull_decomposition& decomp);
	void updateHullCenters();

	LLVector3 mCenterOfHullCenters;
	std::vector<LLVector3> mHullCenter;
	U32 mHullPoints;

	//ID for storing this model in a .slm file
	S32 mLocalID;

	Decomposition mPhysics;

	EModelStatus mStatus ;

	int mSubmodelID;
};

typedef std::vector<LLPointer<LLModel> >	model_list;
typedef std::queue<LLPointer<LLModel> >	model_queue;

class LLModelMaterialBase
{
public:	
	std::string mDiffuseMapFilename;
	std::string mDiffuseMapLabel;
	std::string mBinding;
	LLColor4		mDiffuseColor;
	bool			mFullbright;

	LLModelMaterialBase() 
		: mFullbright(false) 
	{ 
		mDiffuseColor.set(1,1,1,1);
	}
};

class LLImportMaterial : public LLModelMaterialBase
{
public:
    friend class LLMeshUploadThread;
    friend class LLModelPreview;
    
    bool operator<(const LLImportMaterial &params) const;
    
    LLImportMaterial() : LLModelMaterialBase()
    {
        mDiffuseColor.set(1,1,1,1);
    }
    
    LLImportMaterial(LLSD& data);
    virtual ~LLImportMaterial();
    
    LLSD asLLSD();
    
    const LLUUID&	getDiffuseMap() const					{ return mDiffuseMapID;		}
    void				setDiffuseMap(const LLUUID& texId)	{ mDiffuseMapID = texId;	}
    
protected:
    
    LLUUID		mDiffuseMapID;
    void*			mOpaqueData;	// allow refs to viewer/platform-specific structs for each material
    // currently only stores an LLPointer< LLViewerFetchedTexture > > to
    // maintain refs to textures associated with each material for free
    // ref counting.
};

typedef std::map<std::string, LLImportMaterial> material_map;

class LLModelInstanceBase
{
public:
	LLPointer<LLModel> mModel;
	LLPointer<LLModel> mLOD[5];
	LLUUID mMeshID;

	LLMatrix4 mTransform;
	material_map mMaterial;

	LLModelInstanceBase(LLModel* model, LLMatrix4& transform, material_map& materials)
		: mModel(model), mTransform(transform), mMaterial(materials)
	{
	}

	LLModelInstanceBase()
		: mModel(NULL)
	{
	}
};

typedef std::vector<LLModelInstanceBase> model_instance_list;

class LLModelInstance : public LLModelInstanceBase
{
public:
	std::string mLabel;
	LLUUID mMeshID;
	S32 mLocalMeshID;

	LLModelInstance(LLModel* model, const std::string& label, LLMatrix4& transform, material_map& materials)
		: LLModelInstanceBase(model, transform, materials), mLabel(label)
	{
		mLocalMeshID = -1;
	}

	LLModelInstance(LLSD& data);

	LLSD asLLSD();
};

#define LL_DEGENERACY_TOLERANCE  1e-7f

inline F32 dot3fpu(const LLVector4a& a, const LLVector4a& b)
{
	volatile F32 p0 = a[0] * b[0];
	volatile F32 p1 = a[1] * b[1];
	volatile F32 p2 = a[2] * b[2];
	return p0 + p1 + p2;
}

bool ll_is_degenerate(const LLVector4a& a, const LLVector4a& b, const LLVector4a& c, F32 tolerance = LL_DEGENERACY_TOLERANCE);

bool validate_face(const LLVolumeFace& face);
bool validate_model(const LLModel* mdl);

#endif //LL_LLMODEL_H