summaryrefslogtreecommitdiff
path: root/indra/llmath/llvolume.h
blob: 3ccaed47f13eabba83217368f503335157877f53 (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
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
/** 
 * @file llvolume.h
 * @brief LLVolume base class.
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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_LLVOLUME_H
#define LL_LLVOLUME_H

#include <iostream>

class LLProfileParams;
class LLPathParams;
class LLVolumeParams;
class LLProfile;
class LLPath;

template<class T> class LLPointer;
template <class T, typename T_PTR> class LLOctreeNode;

class LLVolumeFace;
class LLVolume;
class LLVolumeTriangle;

#include "lluuid.h"
#include "v4color.h"
//#include "vmath.h"
#include "v2math.h"
#include "v3math.h"
#include "v3dmath.h"
#include "v4math.h"
#include "llvector4a.h"
#include "llmatrix4a.h"
#include "llquaternion.h"
#include "llstrider.h"
#include "v4coloru.h"
#include "llrefcount.h"
#include "llpointer.h"
#include "llfile.h"
#include "llalignedarray.h"
#include "llrigginginfo.h"

//============================================================================

const S32 MIN_DETAIL_FACES = 6;
const S32 MIN_LOD = 0;
const S32 MAX_LOD = 3;

// These are defined here but are not enforced at this level,
// rather they are here for the convenience of code that uses
// the LLVolume class.
const F32 MIN_VOLUME_PROFILE_WIDTH 	= 0.05f;
const F32 MIN_VOLUME_PATH_WIDTH 	= 0.05f;

const F32 CUT_QUANTA    = 0.00002f;
const F32 SCALE_QUANTA  = 0.01f;
const F32 SHEAR_QUANTA  = 0.01f;
const F32 TAPER_QUANTA  = 0.01f;
const F32 REV_QUANTA    = 0.015f;
const F32 HOLLOW_QUANTA = 0.00002f;

const S32 MAX_VOLUME_TRIANGLE_INDICES = 10000;

//============================================================================

// useful masks
const LLPCode LL_PCODE_HOLLOW_MASK 	= 0x80;		// has a thickness
const LLPCode LL_PCODE_SEGMENT_MASK = 0x40;		// segments (1 angle)
const LLPCode LL_PCODE_PATCH_MASK 	= 0x20;		// segmented segments (2 angles)
const LLPCode LL_PCODE_HEMI_MASK 	= 0x10;		// half-primitives get their own type per PR's dictum
const LLPCode LL_PCODE_BASE_MASK 	= 0x0F;

	// primitive shapes
const LLPCode	LL_PCODE_CUBE 			= 1;
const LLPCode	LL_PCODE_PRISM 			= 2;
const LLPCode	LL_PCODE_TETRAHEDRON 	= 3;
const LLPCode	LL_PCODE_PYRAMID 		= 4;
const LLPCode	LL_PCODE_CYLINDER 		= 5;
const LLPCode	LL_PCODE_CONE 			= 6;
const LLPCode	LL_PCODE_SPHERE 		= 7;
const LLPCode	LL_PCODE_TORUS 			= 8;
const LLPCode	LL_PCODE_VOLUME			= 9;

	// surfaces
//const LLPCode	LL_PCODE_SURFACE_TRIANGLE 	= 10;
//const LLPCode	LL_PCODE_SURFACE_SQUARE 	= 11;
//const LLPCode	LL_PCODE_SURFACE_DISC 		= 12;

const LLPCode	LL_PCODE_APP				= 14; // App specific pcode (for viewer/sim side only objects)
const LLPCode	LL_PCODE_LEGACY				= 15;

// Pcodes for legacy objects
//const LLPCode	LL_PCODE_LEGACY_ATOR =				0x10 | LL_PCODE_LEGACY; // ATOR
const LLPCode	LL_PCODE_LEGACY_AVATAR =			0x20 | LL_PCODE_LEGACY; // PLAYER
//const LLPCode	LL_PCODE_LEGACY_BIRD =				0x30 | LL_PCODE_LEGACY; // BIRD
//const LLPCode	LL_PCODE_LEGACY_DEMON =				0x40 | LL_PCODE_LEGACY; // DEMON
const LLPCode	LL_PCODE_LEGACY_GRASS =				0x50 | LL_PCODE_LEGACY; // GRASS
const LLPCode	LL_PCODE_TREE_NEW =					0x60 | LL_PCODE_LEGACY; // new trees
//const LLPCode	LL_PCODE_LEGACY_ORACLE =			0x70 | LL_PCODE_LEGACY; // ORACLE
const LLPCode	LL_PCODE_LEGACY_PART_SYS =			0x80 | LL_PCODE_LEGACY; // PART_SYS
const LLPCode	LL_PCODE_LEGACY_ROCK =				0x90 | LL_PCODE_LEGACY; // ROCK
//const LLPCode	LL_PCODE_LEGACY_SHOT =				0xA0 | LL_PCODE_LEGACY; // BASIC_SHOT
//const LLPCode	LL_PCODE_LEGACY_SHOT_BIG =			0xB0 | LL_PCODE_LEGACY;
//const LLPCode	LL_PCODE_LEGACY_SMOKE =				0xC0 | LL_PCODE_LEGACY; // SMOKE
//const LLPCode	LL_PCODE_LEGACY_SPARK =				0xD0 | LL_PCODE_LEGACY;// SPARK
const LLPCode	LL_PCODE_LEGACY_TEXT_BUBBLE =		0xE0 | LL_PCODE_LEGACY; // TEXTBUBBLE
const LLPCode	LL_PCODE_LEGACY_TREE =				0xF0 | LL_PCODE_LEGACY; // TREE

	// hemis
const LLPCode	LL_PCODE_CYLINDER_HEMI =		LL_PCODE_CYLINDER	| LL_PCODE_HEMI_MASK;
const LLPCode	LL_PCODE_CONE_HEMI =			LL_PCODE_CONE		| LL_PCODE_HEMI_MASK;
const LLPCode	LL_PCODE_SPHERE_HEMI =			LL_PCODE_SPHERE		| LL_PCODE_HEMI_MASK;
const LLPCode	LL_PCODE_TORUS_HEMI =			LL_PCODE_TORUS		| LL_PCODE_HEMI_MASK;


// Volumes consist of a profile at the base that is swept around
// a path to make a volume.
// The profile code
const U8	LL_PCODE_PROFILE_MASK		= 0x0f;
const U8	LL_PCODE_PROFILE_MIN		= 0x00;
const U8    LL_PCODE_PROFILE_CIRCLE		= 0x00;
const U8    LL_PCODE_PROFILE_SQUARE		= 0x01;
const U8	LL_PCODE_PROFILE_ISOTRI		= 0x02;
const U8    LL_PCODE_PROFILE_EQUALTRI	= 0x03;
const U8    LL_PCODE_PROFILE_RIGHTTRI	= 0x04;
const U8	LL_PCODE_PROFILE_CIRCLE_HALF = 0x05;
const U8	LL_PCODE_PROFILE_MAX		= 0x05;

// Stored in the profile byte
const U8	LL_PCODE_HOLE_MASK		= 0xf0;
const U8	LL_PCODE_HOLE_MIN		= 0x00;	  
const U8	LL_PCODE_HOLE_SAME		= 0x00;		// same as outside profile
const U8	LL_PCODE_HOLE_CIRCLE	= 0x10;
const U8	LL_PCODE_HOLE_SQUARE	= 0x20;
const U8	LL_PCODE_HOLE_TRIANGLE	= 0x30;
const U8	LL_PCODE_HOLE_MAX		= 0x03;		// min/max needs to be >> 4 of real min/max

const U8    LL_PCODE_PATH_IGNORE    = 0x00;
const U8	LL_PCODE_PATH_MIN		= 0x01;		// min/max needs to be >> 4 of real min/max
const U8    LL_PCODE_PATH_LINE      = 0x10;
const U8    LL_PCODE_PATH_CIRCLE    = 0x20;
const U8    LL_PCODE_PATH_CIRCLE2   = 0x30;
const U8    LL_PCODE_PATH_TEST      = 0x40;
const U8    LL_PCODE_PATH_FLEXIBLE  = 0x80;
const U8	LL_PCODE_PATH_MAX		= 0x08;

//============================================================================

// face identifiers
typedef U16 LLFaceID;

const LLFaceID	LL_FACE_PATH_BEGIN		= 0x1 << 0;
const LLFaceID	LL_FACE_PATH_END		= 0x1 << 1;
const LLFaceID	LL_FACE_INNER_SIDE		= 0x1 << 2;
const LLFaceID	LL_FACE_PROFILE_BEGIN	= 0x1 << 3;
const LLFaceID	LL_FACE_PROFILE_END		= 0x1 << 4;
const LLFaceID	LL_FACE_OUTER_SIDE_0	= 0x1 << 5;
const LLFaceID	LL_FACE_OUTER_SIDE_1	= 0x1 << 6;
const LLFaceID	LL_FACE_OUTER_SIDE_2	= 0x1 << 7;
const LLFaceID	LL_FACE_OUTER_SIDE_3	= 0x1 << 8;

//============================================================================

// sculpt types + flags

const U8 LL_SCULPT_TYPE_NONE      = 0;
const U8 LL_SCULPT_TYPE_SPHERE    = 1;
const U8 LL_SCULPT_TYPE_TORUS     = 2;
const U8 LL_SCULPT_TYPE_PLANE     = 3;
const U8 LL_SCULPT_TYPE_CYLINDER  = 4;
const U8 LL_SCULPT_TYPE_MESH      = 5;
const U8 LL_SCULPT_TYPE_MASK      = LL_SCULPT_TYPE_SPHERE | LL_SCULPT_TYPE_TORUS | LL_SCULPT_TYPE_PLANE |
	LL_SCULPT_TYPE_CYLINDER | LL_SCULPT_TYPE_MESH;

// for value checks, assign new value after adding new types
const U8 LL_SCULPT_TYPE_MAX = LL_SCULPT_TYPE_MESH;

const U8 LL_SCULPT_FLAG_INVERT    = 64;
const U8 LL_SCULPT_FLAG_MIRROR    = 128;
const U8 LL_SCULPT_FLAG_MASK = LL_SCULPT_FLAG_INVERT | LL_SCULPT_FLAG_MIRROR;

const S32 LL_SCULPT_MESH_MAX_FACES = 8;

extern BOOL gDebugGL;

class LLProfileParams
{
public:
	LLProfileParams()
		: mCurveType(LL_PCODE_PROFILE_SQUARE),
		  mBegin(0.f),
		  mEnd(1.f),
		  mHollow(0.f),
		  mCRC(0)
	{
	}

	LLProfileParams(U8 curve, F32 begin, F32 end, F32 hollow)
		: mCurveType(curve),
		  mBegin(begin),
		  mEnd(end),
		  mHollow(hollow),
		  mCRC(0)
	{
	}

	LLProfileParams(U8 curve, U16 begin, U16 end, U16 hollow)
	{
		mCurveType = curve;
		F32 temp_f32 = begin * CUT_QUANTA;
		if (temp_f32 > 1.f)
		{
			temp_f32 = 1.f;
		}
		mBegin = temp_f32;
		temp_f32 = end * CUT_QUANTA;
		if (temp_f32 > 1.f)
		{
			temp_f32 = 1.f;
		}
		mEnd = 1.f - temp_f32;
		temp_f32 = hollow * HOLLOW_QUANTA;
		if (temp_f32 > 1.f)
		{
			temp_f32 = 1.f;
		}
		mHollow = temp_f32;
		mCRC = 0;
	}

	bool operator==(const LLProfileParams &params) const;
	bool operator!=(const LLProfileParams &params) const;
	bool operator<(const LLProfileParams &params) const;
	
	void copyParams(const LLProfileParams &params);

	BOOL importFile(LLFILE *fp);
	BOOL exportFile(LLFILE *fp) const;

	BOOL importLegacyStream(std::istream& input_stream);
	BOOL exportLegacyStream(std::ostream& output_stream) const;

	LLSD asLLSD() const;
	operator LLSD() const { return asLLSD(); }
	bool fromLLSD(LLSD& sd);

	const F32&  getBegin () const				{ return mBegin; }
	const F32&  getEnd   () const				{ return mEnd;   }
	const F32&  getHollow() const				{ return mHollow; }
	const U8&   getCurveType () const			{ return mCurveType; }

	void setCurveType(const U32 type)			{ mCurveType = type;}
	void setBegin(const F32 begin)				{ mBegin = (begin >= 1.0f) ? 0.0f : ((int) (begin * 100000))/100000.0f;}
	void setEnd(const F32 end)					{ mEnd   = (end   <= 0.0f) ? 1.0f : ((int) (end * 100000))/100000.0f;}
	void setHollow(const F32 hollow)			{ mHollow = ((int) (hollow * 100000))/100000.0f;}

	friend std::ostream& operator<<(std::ostream &s, const LLProfileParams &profile_params);

protected:
	// Profile params
	U8			  mCurveType;
	F32           mBegin;
	F32           mEnd;
	F32			  mHollow;

	U32           mCRC;
};

inline bool LLProfileParams::operator==(const LLProfileParams &params) const
{
	return 
		(getCurveType() == params.getCurveType()) &&
		(getBegin() == params.getBegin()) &&
		(getEnd() == params.getEnd()) &&
		(getHollow() == params.getHollow());
}

inline bool LLProfileParams::operator!=(const LLProfileParams &params) const
{
	return 
		(getCurveType() != params.getCurveType()) ||
		(getBegin() != params.getBegin()) ||
		(getEnd() != params.getEnd()) ||
		(getHollow() != params.getHollow());
}


inline bool LLProfileParams::operator<(const LLProfileParams &params) const
{
	if (getCurveType() != params.getCurveType())
	{
		return getCurveType() < params.getCurveType();
	}
	else
	if (getBegin() != params.getBegin())
	{
		return getBegin() < params.getBegin();
	}
	else
	if (getEnd() != params.getEnd())
	{
		return getEnd() < params.getEnd();
	}
	else
	{
		return getHollow() < params.getHollow();
	}
}

#define U8_TO_F32(x) (F32)(*((S8 *)&x))

class LLPathParams
{
public:
	LLPathParams()
		:
		mCurveType(LL_PCODE_PATH_LINE),
		mBegin(0.f),
		mEnd(1.f),
		mScale(1.f,1.f),
		mShear(0.f,0.f),
		mTwistBegin(0.f),
		mTwistEnd(0.f),
		mRadiusOffset(0.f),
		mTaper(0.f,0.f),
		mRevolutions(1.f),
		mSkew(0.f),
		mCRC(0)
	{
	}

	LLPathParams(U8 curve, F32 begin, F32 end, F32 scx, F32 scy, F32 shx, F32 shy, F32 twistend, F32 twistbegin, F32 radiusoffset, F32 tx, F32 ty, F32 revolutions, F32 skew)
		: mCurveType(curve),
		  mBegin(begin),
		  mEnd(end),
		  mScale(scx,scy),
		  mShear(shx,shy),
		  mTwistBegin(twistbegin),
		  mTwistEnd(twistend), 
		  mRadiusOffset(radiusoffset),
		  mTaper(tx,ty),
		  mRevolutions(revolutions),
		  mSkew(skew),
		  mCRC(0)
	{
	}

	LLPathParams(U8 curve, U16 begin, U16 end, U8 scx, U8 scy, U8 shx, U8 shy, U8 twistend, U8 twistbegin, U8 radiusoffset, U8 tx, U8 ty, U8 revolutions, U8 skew)
	{
		mCurveType = curve;
		mBegin = (F32)(begin * CUT_QUANTA);
		mEnd = (F32)(100.f - end) * CUT_QUANTA;
		if (mEnd > 1.f)
			mEnd = 1.f;
		mScale.setVec((F32) (200 - scx) * SCALE_QUANTA,(F32) (200 - scy) * SCALE_QUANTA);
		mShear.setVec(U8_TO_F32(shx) * SHEAR_QUANTA,U8_TO_F32(shy) * SHEAR_QUANTA);
		mTwistBegin = U8_TO_F32(twistbegin) * SCALE_QUANTA;
		mTwistEnd = U8_TO_F32(twistend) * SCALE_QUANTA;
		mRadiusOffset = U8_TO_F32(radiusoffset) * SCALE_QUANTA;
		mTaper.setVec(U8_TO_F32(tx) * TAPER_QUANTA,U8_TO_F32(ty) * TAPER_QUANTA);
		mRevolutions = ((F32)revolutions) * REV_QUANTA + 1.0f;
		mSkew = U8_TO_F32(skew) * SCALE_QUANTA;

		mCRC = 0;
	}

	bool operator==(const LLPathParams &params) const;
	bool operator!=(const LLPathParams &params) const;
	bool operator<(const LLPathParams &params) const;

	void copyParams(const LLPathParams &params);

	BOOL importFile(LLFILE *fp);
	BOOL exportFile(LLFILE *fp) const;

	BOOL importLegacyStream(std::istream& input_stream);
	BOOL exportLegacyStream(std::ostream& output_stream) const;

	LLSD asLLSD() const;
	operator LLSD() const { return asLLSD(); }
	bool fromLLSD(LLSD& sd);

	const F32& getBegin() const			{ return mBegin; }
	const F32& getEnd() const			{ return mEnd; }
	const LLVector2 &getScale() const	{ return mScale; }
	const F32& getScaleX() const		{ return mScale.mV[0]; }
	const F32& getScaleY() const		{ return mScale.mV[1]; }
	const LLVector2 getBeginScale() const;
	const LLVector2 getEndScale() const;
	const LLVector2 &getShear() const	{ return mShear; }
	const F32& getShearX() const		{ return mShear.mV[0]; }
	const F32& getShearY() const		{ return mShear.mV[1]; }
	const U8& getCurveType () const		{ return mCurveType; }

	const F32& getTwistBegin() const	{ return mTwistBegin;	}
	const F32& getTwistEnd() const		{ return mTwistEnd;	}
	const F32& getTwist() const			{ return mTwistEnd; }	// deprecated
	const F32& getRadiusOffset() const	{ return mRadiusOffset; }
	const LLVector2 &getTaper() const	{ return mTaper;		}
	const F32& getTaperX() const		{ return mTaper.mV[0];	}
	const F32& getTaperY() const		{ return mTaper.mV[1];	}
	const F32& getRevolutions() const	{ return mRevolutions;	}
	const F32& getSkew() const			{ return mSkew;			}

	void setCurveType(const U8 type)	{ mCurveType = type;	}
	void setBegin(const F32 begin)		{ mBegin     = begin;	}
	void setEnd(const F32 end)			{ mEnd       = end;	}

	void setScale(const F32 x, const F32 y)		{ mScale.setVec(x,y); }
	void setScaleX(const F32 v)					{ mScale.mV[VX] = v; }
	void setScaleY(const F32 v)					{ mScale.mV[VY] = v; }
	void setShear(const F32 x, const F32 y)		{ mShear.setVec(x,y); }
	void setShearX(const F32 v)					{ mShear.mV[VX] = v; }
	void setShearY(const F32 v)					{ mShear.mV[VY] = v; }

	void setTwistBegin(const F32 twist_begin)	{ mTwistBegin	= twist_begin;	}
	void setTwistEnd(const F32 twist_end)		{ mTwistEnd		= twist_end;	}
	void setTwist(const F32 twist)				{ setTwistEnd(twist); }	// deprecated
	void setRadiusOffset(const F32 radius_offset){ mRadiusOffset	= radius_offset; }
	void setTaper(const F32 x, const F32 y)		{ mTaper.setVec(x,y);			}
	void setTaperX(const F32 v)					{ mTaper.mV[VX]	= v;			}
	void setTaperY(const F32 v)					{ mTaper.mV[VY]	= v;			}
	void setRevolutions(const F32 revolutions)	{ mRevolutions	= revolutions;	}
	void setSkew(const F32 skew)				{ mSkew			= skew;			}

	friend std::ostream& operator<<(std::ostream &s, const LLPathParams &path_params);

protected:
	// Path params
	U8			  mCurveType;
	F32           mBegin;
	F32           mEnd;
	LLVector2	  mScale;
	LLVector2     mShear;

	F32			  mTwistBegin;
	F32			  mTwistEnd;
	F32			  mRadiusOffset;
	LLVector2	  mTaper;
	F32			  mRevolutions;
	F32			  mSkew;

	U32           mCRC;
};

inline bool LLPathParams::operator==(const LLPathParams &params) const
{
	return
		(getCurveType() == params.getCurveType()) && 
		(getScale() == params.getScale()) &&
		(getBegin() == params.getBegin()) && 
		(getEnd() == params.getEnd()) && 
		(getShear() == params.getShear()) &&
		(getTwist() == params.getTwist()) &&
		(getTwistBegin() == params.getTwistBegin()) &&
		(getRadiusOffset() == params.getRadiusOffset()) &&
		(getTaper() == params.getTaper()) &&
		(getRevolutions() == params.getRevolutions()) &&
		(getSkew() == params.getSkew());
}

inline bool LLPathParams::operator!=(const LLPathParams &params) const
{
	return
		(getCurveType() != params.getCurveType()) ||
		(getScale() != params.getScale()) ||
		(getBegin() != params.getBegin()) || 
		(getEnd() != params.getEnd()) || 
		(getShear() != params.getShear()) ||
		(getTwist() != params.getTwist()) ||
		(getTwistBegin() !=params.getTwistBegin()) ||
		(getRadiusOffset() != params.getRadiusOffset()) ||
		(getTaper() != params.getTaper()) ||
		(getRevolutions() != params.getRevolutions()) ||
		(getSkew() != params.getSkew());
}


inline bool LLPathParams::operator<(const LLPathParams &params) const
{
	if( getCurveType() != params.getCurveType()) 
	{
		return getCurveType() < params.getCurveType();
	}
	else
	if( getScale() != params.getScale()) 
	{
		return getScale() < params.getScale();
	}
	else
	if( getBegin() != params.getBegin()) 
	{
		return getBegin() < params.getBegin();
	}
	else
	if( getEnd() != params.getEnd()) 
	{
		return getEnd() < params.getEnd();
	}
	else
	if( getShear() != params.getShear()) 
	{
		return getShear() < params.getShear();
	}
	else
	if( getTwist() != params.getTwist())
	{
		return getTwist() < params.getTwist();
	}
	else
	if( getTwistBegin() != params.getTwistBegin())
	{
		return getTwistBegin() < params.getTwistBegin();
	}
	else
	if( getRadiusOffset() != params.getRadiusOffset())
	{
		return getRadiusOffset() < params.getRadiusOffset();
	}
	else
	if( getTaper() != params.getTaper())
	{
		return getTaper() < params.getTaper();
	}
	else
	if( getRevolutions() != params.getRevolutions())
	{
		return getRevolutions() < params.getRevolutions();
	}
	else
	{
		return getSkew() < params.getSkew();
	}
}

typedef LLVolumeParams* LLVolumeParamsPtr;
typedef const LLVolumeParams* const_LLVolumeParamsPtr;

class LLVolumeParams
{
public:
	LLVolumeParams()
		: mSculptType(LL_SCULPT_TYPE_NONE)
	{
	}

	LLVolumeParams(LLProfileParams &profile, LLPathParams &path,
				   LLUUID sculpt_id = LLUUID::null, U8 sculpt_type = LL_SCULPT_TYPE_NONE)
		: mProfileParams(profile), mPathParams(path), mSculptID(sculpt_id), mSculptType(sculpt_type)
	{
	}

	bool operator==(const LLVolumeParams &params) const;
	bool operator!=(const LLVolumeParams &params) const;
	bool operator<(const LLVolumeParams &params) const;


	void copyParams(const LLVolumeParams &params);
	
	const LLProfileParams &getProfileParams() const {return mProfileParams;}
	LLProfileParams &getProfileParams() {return mProfileParams;}
	const LLPathParams &getPathParams() const {return mPathParams;}
	LLPathParams &getPathParams() {return mPathParams;}

	BOOL importFile(LLFILE *fp);
	BOOL exportFile(LLFILE *fp) const;

	BOOL importLegacyStream(std::istream& input_stream);
	BOOL exportLegacyStream(std::ostream& output_stream) const;

	LLSD sculptAsLLSD() const;
	bool sculptFromLLSD(LLSD& sd);
	
	LLSD asLLSD() const;
	operator LLSD() const { return asLLSD(); }
	bool fromLLSD(LLSD& sd);

	bool setType(U8 profile, U8 path);

	//void setBeginS(const F32 beginS)			{ mProfileParams.setBegin(beginS); }	// range 0 to 1
	//void setBeginT(const F32 beginT)			{ mPathParams.setBegin(beginT); }		// range 0 to 1
	//void setEndS(const F32 endS)				{ mProfileParams.setEnd(endS); }		// range 0 to 1, must be greater than begin
	//void setEndT(const F32 endT)				{ mPathParams.setEnd(endT); }			// range 0 to 1, must be greater than begin

	bool setBeginAndEndS(const F32 begin, const F32 end);			// both range from 0 to 1, begin must be less than end
	bool setBeginAndEndT(const F32 begin, const F32 end);			// both range from 0 to 1, begin must be less than end

	bool setHollow(const F32 hollow);	// range 0 to 1
	bool setRatio(const F32 x)					{ return setRatio(x,x); }			// 0 = point, 1 = same as base
	bool setShear(const F32 x)					{ return setShear(x,x); }			// 0 = no movement, 
	bool setRatio(const F32 x, const F32 y);			// 0 = point, 1 = same as base
	bool setShear(const F32 x, const F32 y);			// 0 = no movement

	bool setTwistBegin(const F32 twist_begin);	// range -1 to 1
	bool setTwistEnd(const F32 twist_end);		// range -1 to 1
	bool setTwist(const F32 twist)				{ return setTwistEnd(twist); }		// deprecated
	bool setTaper(const F32 x, const F32 y)		{ bool pass_x = setTaperX(x); bool pass_y = setTaperY(y); return pass_x && pass_y; }
	bool setTaperX(const F32 v);				// -1 to 1
	bool setTaperY(const F32 v);				// -1 to 1
	bool setRevolutions(const F32 revolutions);	// 1 to 4
	bool setRadiusOffset(const F32 radius_offset);
	bool setSkew(const F32 skew);
	bool setSculptID(const LLUUID sculpt_id, U8 sculpt_type);

	static bool validate(U8 prof_curve, F32 prof_begin, F32 prof_end, F32 hollow,
		U8 path_curve, F32 path_begin, F32 path_end,
		F32 scx, F32 scy, F32 shx, F32 shy,
		F32 twistend, F32 twistbegin, F32 radiusoffset,
		F32 tx, F32 ty, F32 revolutions, F32 skew);
	
	const F32&  getBeginS() 	const	{ return mProfileParams.getBegin(); }
 	const F32&  getBeginT() 	const	{ return mPathParams.getBegin(); }
 	const F32&  getEndS() 		const	{ return mProfileParams.getEnd(); }
 	const F32&  getEndT() 		const	{ return mPathParams.getEnd(); }
 
 	const F32&  getHollow() 	const   { return mProfileParams.getHollow(); }
 	const F32&  getTwist() 	const   	{ return mPathParams.getTwist(); }
 	const F32&  getRatio() 	const		{ return mPathParams.getScaleX(); }
 	const F32&  getRatioX() 	const   { return mPathParams.getScaleX(); }
 	const F32&  getRatioY() 	const   { return mPathParams.getScaleY(); }
 	const F32&  getShearX() 	const   { return mPathParams.getShearX(); }
 	const F32&  getShearY() 	const   { return mPathParams.getShearY(); }

	const F32&	getTwistBegin()const	{ return mPathParams.getTwistBegin();	}
	const F32&  getRadiusOffset() const	{ return mPathParams.getRadiusOffset();	}
	const F32&  getTaper() const		{ return mPathParams.getTaperX();		}
	const F32&	getTaperX() const		{ return mPathParams.getTaperX();		}
	const F32&  getTaperY() const		{ return mPathParams.getTaperY();		}
	const F32&  getRevolutions() const	{ return mPathParams.getRevolutions();	}
	const F32&  getSkew() const			{ return mPathParams.getSkew();			}
	const LLUUID& getSculptID() const	{ return mSculptID;						}
	const U8& getSculptType() const     { return mSculptType;                   }
	bool isSculpt() const;
	bool isMeshSculpt() const;
	BOOL isConvex() const;

	// 'begin' and 'end' should be in range [0, 1] (they will be clamped)
	// (begin, end) = (0, 1) will not change the volume
	// (begin, end) = (0, 0.5) will reduce the volume to the first half of its profile/path (S/T)
	void reduceS(F32 begin, F32 end);
	void reduceT(F32 begin, F32 end);

	struct compare
	{
		bool operator()( const const_LLVolumeParamsPtr& first, const const_LLVolumeParamsPtr& second) const
		{
			return (*first < *second);
		}
	};
	
	friend std::ostream& operator<<(std::ostream &s, const LLVolumeParams &volume_params);

	// debug helper functions
	void setCube();

protected:
	LLProfileParams mProfileParams;
	LLPathParams	mPathParams;
	LLUUID mSculptID;
	U8 mSculptType;
};


class LLProfile
{
	friend class LLVolume;

public:
	LLProfile()
		: mOpen(FALSE),
		  mConcave(FALSE),
		  mDirty(TRUE),
		  mTotalOut(0),
		  mTotal(2)
	{
	}

	S32	 getTotal() const								{ return mTotal; }
	S32	 getTotalOut() const							{ return mTotalOut; }	// Total number of outside points
	BOOL isFlat(S32 face) const							{ return (mFaces[face].mCount == 2); }
	BOOL isOpen() const									{ return mOpen; }
	void setDirty()										{ mDirty     = TRUE; }

	static S32 getNumPoints(const LLProfileParams& params, BOOL path_open, F32 detail = 1.0f, S32 split = 0,
				  BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
	BOOL generate(const LLProfileParams& params, BOOL path_open, F32 detail = 1.0f, S32 split = 0,
				  BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
	BOOL isConcave() const								{ return mConcave; }
public:
	struct Face
	{
		S32       mIndex;
		S32       mCount;
		F32       mScaleU;
		BOOL      mCap;
		BOOL      mFlat;
		LLFaceID  mFaceID;
	};
	
	LLAlignedArray<LLVector4a, 64> mProfile;	
	//LLAlignedArray<LLVector4a, 64> mNormals;
	std::vector<Face>      mFaces;

	//LLAlignedArray<LLVector4a, 64> mEdgeNormals;
	//LLAlignedArray<LLVector4a, 64> mEdgeCenters;

	friend std::ostream& operator<<(std::ostream &s, const LLProfile &profile);

protected:
	~LLProfile();

	static S32 getNumNGonPoints(const LLProfileParams& params, S32 sides, F32 offset=0.0f, F32 bevel = 0.0f, F32 ang_scale = 1.f, S32 split = 0);
	void genNGon(const LLProfileParams& params, S32 sides, F32 offset=0.0f, F32 bevel = 0.0f, F32 ang_scale = 1.f, S32 split = 0);

	Face* addHole(const LLProfileParams& params, BOOL flat, F32 sides, F32 offset, F32 box_hollow, F32 ang_scale, S32 split = 0);
	Face* addCap (S16 faceID);
	Face* addFace(S32 index, S32 count, F32 scaleU, S16 faceID, BOOL flat);

protected:
	BOOL		  mOpen;
	BOOL		  mConcave;
	BOOL          mDirty;

	S32			  mTotalOut;
	S32			  mTotal;
};

//-------------------------------------------------------------------
// SWEEP/EXTRUDE PATHS
//-------------------------------------------------------------------

class LLPath
{
public:
	class PathPt
	{
	public:
		LLMatrix4a   mRot;
		LLVector4a	 mPos;
		
		LLVector4a   mScale;
		F32			 mTexT;
		F32 pad[3]; //for alignment
		PathPt() 
		{ 
			mPos.clear(); 
			mTexT = 0; 
			mScale.clear(); 
			mRot.setRows(LLVector4a(1,0,0,0),
						LLVector4a(0,1,0,0),
						LLVector4a(0,0,1,0));

			//distinguished data in the pad for debugging
			pad[0] = 3.14159f;
			pad[1] = -3.14159f;
			pad[2] = 0.585f;
		}
	};

public:
	LLPath()
		: mOpen(FALSE),
		  mTotal(0),
		  mDirty(TRUE),
		  mStep(1)
	{
	}

	virtual ~LLPath();

	static S32 getNumPoints(const LLPathParams& params, F32 detail);
	static S32 getNumNGonPoints(const LLPathParams& params, S32 sides, F32 offset=0.0f, F32 end_scale = 1.f, F32 twist_scale = 1.f);

	void genNGon(const LLPathParams& params, S32 sides, F32 offset=0.0f, F32 end_scale = 1.f, F32 twist_scale = 1.f);
	virtual BOOL generate(const LLPathParams& params, F32 detail=1.0f, S32 split = 0,
						  BOOL is_sculpted = FALSE, S32 sculpt_size = 0);

	BOOL isOpen() const						{ return mOpen; }
	F32 getStep() const						{ return mStep; }
	void setDirty()							{ mDirty     = TRUE; }

	S32 getPathLength() const				{ return (S32)mPath.size(); }

	void resizePath(S32 length) { mPath.resize(length); }

	friend std::ostream& operator<<(std::ostream &s, const LLPath &path);

public:
	LLAlignedArray<PathPt, 64> mPath;

protected:
	BOOL		  mOpen;
	S32			  mTotal;
	BOOL          mDirty;
	F32           mStep;
};

class LLDynamicPath : public LLPath
{
public:
	LLDynamicPath() : LLPath() { }
	/*virtual*/ BOOL generate(const LLPathParams& params, F32 detail=1.0f, S32 split = 0,
							  BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
};

// Yet another "face" class - caches volume-specific, but not instance-specific data for faces)
class LLVolumeFace
{
public:
	class VertexData
	{
		enum 
		{
			POSITION = 0,
			NORMAL = 1
		};

	private:
		void init();
	public:
		VertexData();
		VertexData(const VertexData& rhs);
		const VertexData& operator=(const VertexData& rhs);

		~VertexData();
		LLVector4a& getPosition();
		LLVector4a& getNormal();
		const LLVector4a& getPosition() const;
		const LLVector4a& getNormal() const;
		void setPosition(const LLVector4a& pos);
		void setNormal(const LLVector4a& norm);
		

		LLVector2 mTexCoord;

		bool operator<(const VertexData& rhs) const;
		bool operator==(const VertexData& rhs) const;
		bool compareNormal(const VertexData& rhs, F32 angle_cutoff) const;

	private:
		LLVector4a* mData;
	};

	LLVolumeFace();
	LLVolumeFace(const LLVolumeFace& src);
	LLVolumeFace& operator=(const LLVolumeFace& rhs);

	~LLVolumeFace();
private:
	void freeData();
public:

	BOOL create(LLVolume* volume, BOOL partial_build = FALSE);
	void createTangents();
	
	void resizeVertices(S32 num_verts);
	void allocateTangents(S32 num_verts);
	void allocateWeights(S32 num_verts);
    void allocateJointIndices(S32 num_verts);
	void resizeIndices(S32 num_indices);
	void fillFromLegacyData(std::vector<LLVolumeFace::VertexData>& v, std::vector<U16>& idx);

	void pushVertex(const VertexData& cv);
	void pushVertex(const LLVector4a& pos, const LLVector4a& norm, const LLVector2& tc);
	void pushIndex(const U16& idx);

	void swapData(LLVolumeFace& rhs);

	void getVertexData(U16 indx, LLVolumeFace::VertexData& cv);

	class VertexMapData : public LLVolumeFace::VertexData
	{
	public:
		U16 mIndex;

		bool operator==(const LLVolumeFace::VertexData& rhs) const;

		struct ComparePosition
		{
			bool operator()(const LLVector3& a, const LLVector3& b) const;
		};

		typedef std::map<LLVector3, std::vector<VertexMapData>, VertexMapData::ComparePosition > PointMap;
	};

    // Eliminates non unique triangles, takes positions,
    // normals and texture coordinates into account.
    void remap();

	void optimize(F32 angle_cutoff = 2.f);
	bool cacheOptimize();

	void createOctree(F32 scaler = 0.25f, const LLVector4a& center = LLVector4a(0,0,0), const LLVector4a& size = LLVector4a(0.5f,0.5f,0.5f));
    void destroyOctree();
    // Get a reference to the octree, which may be null
    const LLOctreeNode<LLVolumeTriangle, LLVolumeTriangle*>* getOctree() const;

	enum
	{
		SINGLE_MASK =	0x0001,
		CAP_MASK =		0x0002,
		END_MASK =		0x0004,
		SIDE_MASK =		0x0008,
		INNER_MASK =	0x0010,
		OUTER_MASK =	0x0020,
		HOLLOW_MASK =	0x0040,
		OPEN_MASK =		0x0080,
		FLAT_MASK =		0x0100,
		TOP_MASK =		0x0200,
		BOTTOM_MASK =	0x0400
	};
	
public:
	S32 mID;
	U32 mTypeMask;
	
	// Only used for INNER/OUTER faces
	S32 mBeginS;
	S32 mBeginT;
	S32 mNumS;
	S32 mNumT;

	LLVector4a* mExtents; //minimum and maximum point of face
	LLVector4a* mCenter;
	LLVector2   mTexCoordExtents[2]; //minimum and maximum of texture coordinates of the face.

	S32 mNumVertices; // num vertices == num normals == num texcoords
	S32 mNumAllocatedVertices;
	S32 mNumIndices;

	LLVector4a* mPositions; // Contains vertices, nortmals and texcoords
	LLVector4a* mNormals; // pointer into mPositions
	LLVector4a* mTangents;
	LLVector2*  mTexCoords; // pointer into mPositions

	// mIndices contains mNumIndices amount of elements.
	// It contains triangles, each 3 indices describe one triangle.
    // If mIndices contains {0, 2, 3, 1, 2, 4}, it means there
    // are two triangles {0, 2, 3} and {1, 2, 4} with values being
    // indexes for mPositions/mNormals/mTexCoords
	U16* mIndices;

	// vertex buffer filled in by LLFace to cache this volume face geometry in vram 
	// (declared as a LLPointer to LLRefCount to avoid dependency on LLVertexBuffer)
	mutable LLPointer<LLRefCount> mVertexBuffer; 

	std::vector<S32>	mEdge;

	//list of skin weights for rigged volumes
	// format is mWeights[vertex_index].mV[influence] = <joint_index>.<weight>
	// mWeights.size() should be empty or match mVertices.size()  
	LLVector4a* mWeights;

#if USE_SEPARATE_JOINT_INDICES_AND_WEIGHTS
    LLVector4a* mJustWeights;
    U8* mJointIndices;
#endif

    mutable BOOL mWeightsScrubbed;

    // Which joints are rigged to, and the bounding box of any rigged
    // vertices per joint.
    LLJointRiggingInfoTab mJointRiggingInfoTab;

	//whether or not face has been cache optimized
	BOOL mOptimized;

private:
    LLOctreeNode<LLVolumeTriangle, LLVolumeTriangle*>* mOctree;
    LLVolumeTriangle* mOctreeTriangles;

	BOOL createUnCutCubeCap(LLVolume* volume, BOOL partial_build = FALSE);
	BOOL createCap(LLVolume* volume, BOOL partial_build = FALSE);
	BOOL createSide(LLVolume* volume, BOOL partial_build = FALSE);
};

class LLVolume : public LLRefCount
{
	friend class LLVolumeLODGroup;

protected:
	~LLVolume(); // use unref

public:
	typedef std::vector<LLVolumeFace> face_list_t;
		
	struct FaceParams
	{
		LLFaceID mFaceID;
		S32 mBeginS;
		S32 mCountS;
		S32 mBeginT;
		S32 mCountT;
	};

	LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL generate_single_face = FALSE, const BOOL is_unique = FALSE);
	
	U8 getProfileType()	const								{ return mParams.getProfileParams().getCurveType(); }
	U8 getPathType() const									{ return mParams.getPathParams().getCurveType(); }
	S32	getNumFaces() const;
	S32 getNumVolumeFaces() const							{ return mVolumeFaces.size(); }
	F32 getDetail() const									{ return mDetail; }
	F32 getSurfaceArea() const								{ return mSurfaceArea; }
	const LLVolumeParams& getParams() const					{ return mParams; }
	LLVolumeParams getCopyOfParams() const					{ return mParams; }
	const LLProfile& getProfile() const						{ return *mProfilep; }
	LLPath& getPath() const									{ return *mPathp; }
	void resizePath(S32 length);
	const LLAlignedArray<LLVector4a,64>&	getMesh() const				{ return mMesh; }
	const LLVector4a& getMeshPt(const U32 i) const			{ return mMesh[i]; }
	

	void setDirty() { mPathp->setDirty(); mProfilep->setDirty(); }

	void regen();
	void genTangents(S32 face);

	BOOL isConvex() const;
	BOOL isCap(S32 face);
	BOOL isFlat(S32 face);
	BOOL isUnique() const									{ return mUnique; }

	S32 getSculptLevel() const                              { return mSculptLevel; }
	void setSculptLevel(S32 level)							{ mSculptLevel = level; }

	
	static void getLoDTriangleCounts(const LLVolumeParams& params, S32* counts);

	S32 getNumTriangles(S32* vcount = NULL) const;

	void generateSilhouetteVertices(std::vector<LLVector3> &vertices, 
									std::vector<LLVector3> &normals, 
									const LLVector3& view_vec,
									const LLMatrix4& mat,
									const LLMatrix3& norm_mat,
									S32 face_index);

	//get the face index of the face that intersects with the given line segment at the point 
	//closest to start.  Moves end to the point of intersection.  Returns -1 if no intersection.
	//Line segment must be in volume space.
	S32 lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
							 S32 face = -1,                          // which face to check, -1 = ALL_SIDES
							 LLVector4a* intersection = NULL,         // return the intersection point
							 LLVector2* tex_coord = NULL,            // return the texture coordinates of the intersection point
							 LLVector4a* normal = NULL,               // return the surface normal at the intersection point
							 LLVector4a* tangent = NULL             // return the surface tangent at the intersection point
		);

	LLFaceID generateFaceMask();

	BOOL isFaceMaskValid(LLFaceID face_mask);
	static S32 sNumMeshPoints;

	friend std::ostream& operator<<(std::ostream &s, const LLVolume &volume);
	friend std::ostream& operator<<(std::ostream &s, const LLVolume *volumep);		// HACK to bypass Windoze confusion over 
																				// conversion if *(LLVolume*) to LLVolume&
	const LLVolumeFace &getVolumeFace(const S32 f) const {return mVolumeFaces[f];} // DO NOT DELETE VOLUME WHILE USING THIS REFERENCE, OR HOLD A POINTER TO THIS VOLUMEFACE
	
	LLVolumeFace &getVolumeFace(const S32 f) {return mVolumeFaces[f];} // DO NOT DELETE VOLUME WHILE USING THIS REFERENCE, OR HOLD A POINTER TO THIS VOLUMEFACE

	face_list_t& getVolumeFaces() { return mVolumeFaces; }

	U32					mFaceMask;			// bit array of which faces exist in this volume
	LLVector3			mLODScaleBias;		// vector for biasing LOD based on scale
	
	void sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components, const U8* sculpt_data, S32 sculpt_level, bool visible_placeholder);
	void copyVolumeFaces(const LLVolume* volume);
	void copyFacesTo(std::vector<LLVolumeFace> &faces) const;
	void copyFacesFrom(const std::vector<LLVolumeFace> &faces);
	bool cacheOptimize();

private:
	void sculptGenerateMapVertices(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components, const U8* sculpt_data, U8 sculpt_type);
	F32 sculptGetSurfaceArea();
	void sculptGenerateEmptyPlaceholder();
	void sculptGenerateSpherePlaceholder();
	void sculptCalcMeshResolution(U16 width, U16 height, U8 type, S32& s, S32& t);

	
protected:
	BOOL generate();
	void createVolumeFaces();
public:
	virtual bool unpackVolumeFaces(std::istream& is, S32 size);

	virtual void setMeshAssetLoaded(BOOL loaded);
	virtual BOOL isMeshAssetLoaded();

 protected:
	BOOL mUnique;
	F32 mDetail;
	S32 mSculptLevel;
	F32 mSurfaceArea; //unscaled surface area
	BOOL mIsMeshAssetLoaded;
	
	const LLVolumeParams mParams;
	LLPath *mPathp;
	LLProfile *mProfilep;
	LLAlignedArray<LLVector4a,64> mMesh;
	
	
	BOOL mGenerateSingleFace;
	face_list_t mVolumeFaces;

public:
	LLVector4a* mHullPoints;
	U16* mHullIndices;
	S32 mNumHullPoints;
	S32 mNumHullIndices;
};

std::ostream& operator<<(std::ostream &s, const LLVolumeParams &volume_params);

BOOL LLLineSegmentBoxIntersect(const F32* start, const F32* end, const F32* center, const F32* size);
BOOL LLLineSegmentBoxIntersect(const LLVector3& start, const LLVector3& end, const LLVector3& center, const LLVector3& size);
BOOL LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, const LLVector4a& center, const LLVector4a& size);

//BOOL LLTriangleRayIntersect(const LLVector3& vert0, const LLVector3& vert1, const LLVector3& vert2, const LLVector3& orig, const LLVector3& dir,
//							F32& intersection_a, F32& intersection_b, F32& intersection_t, BOOL two_sided);

BOOL LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
							F32& intersection_a, F32& intersection_b, F32& intersection_t);
BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
							F32& intersection_a, F32& intersection_b, F32& intersection_t);
	
	

#endif