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1/**
2 * @file llvotree.h
3 * @brief LLVOTree class header file
4 *
5 * Copyright (c) 2002-2007, Linden Research, Inc.
6 *
7 * The source code in this file ("Source Code") is provided by Linden Lab
8 * to you under the terms of the GNU General Public License, version 2.0
9 * ("GPL"), unless you have obtained a separate licensing agreement
10 * ("Other License"), formally executed by you and Linden Lab. Terms of
11 * the GPL can be found in doc/GPL-license.txt in this distribution, or
12 * online at http://secondlife.com/developers/opensource/gplv2
13 *
14 * There are special exceptions to the terms and conditions of the GPL as
15 * it is applied to this Source Code. View the full text of the exception
16 * in the file doc/FLOSS-exception.txt in this software distribution, or
17 * online at http://secondlife.com/developers/opensource/flossexception
18 *
19 * By copying, modifying or distributing this software, you acknowledge
20 * that you have read and understood your obligations described above,
21 * and agree to abide by those obligations.
22 *
23 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
24 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
25 * COMPLETENESS OR PERFORMANCE.
26 */
27
28#ifndef LL_LLVOTREE_H
29#define LL_LLVOTREE_H
30
31#include "llviewerobject.h"
32#include "lldarray.h"
33#include "xform.h"
34
35class LLFace;
36class LLDrawPool;
37
38
39class LLVOTree : public LLViewerObject
40{
41public:
42 LLVOTree(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
43 virtual ~LLVOTree();
44
45 // Initialize data that's only inited once per class.
46 static void initClass();
47 static void cleanupClass();
48
49 /*virtual*/ U32 processUpdateMessage(LLMessageSystem *mesgsys,
50 void **user_data,
51 U32 block_num, const EObjectUpdateType update_type,
52 LLDataPacker *dp);
53 /*virtual*/ BOOL idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time);
54
55 // Graphical stuff for objects - maybe broken out into render class later?
56 /*virtual*/ void render(LLAgent &agent);
57 /*virtual*/ void setPixelAreaAndAngle(LLAgent &agent);
58 /*virtual*/ void updateTextures(LLAgent &agent);
59
60 /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
61 /*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
62
63 void updateRadius();
64
65 void drawBranchPipeline(LLDrawPool *draw_pool, S32 trunk_LOD, S32 stop_level, U16 depth, U16 trunk_depth, F32 scale, F32 twist, F32 droop, F32 branches, F32 alpha);
66
67 void drawBranch(S32 stop_level, U16 depth, U16 trunk_depth, F32 scale, F32 twist, F32 droop, F32 branches, F32 alpha, BOOL draw_leaves);
68
69 static S32 sMaxTreeSpecies;
70
71 struct TreeSpeciesData
72 {
73 LLUUID mTextureID;
74
75 F32 mBranchLength; // Scale (length) of tree branches
76 F32 mDroop; // Droop from vertical (degrees) at each branch recursion
77 F32 mTwist; // Twist
78 F32 mBranches; // Number of branches emitted at each recursion level
79 U8 mDepth; // Number of recursions to tips of branches
80 F32 mScaleStep; // Multiplier for scale at each recursion level
81 U8 mTrunkDepth;
82
83 F32 mLeafScale; // Scales leaf texture when rendering
84 F32 mTrunkLength; // Scales branch diameters when rendering
85 F32 mBillboardScale; // Scales the billboard representation
86 F32 mBillboardRatio; // Height to width aspect ratio
87 F32 mTrunkAspect;
88 F32 mBranchAspect;
89 F32 mRandomLeafRotate;
90 F32 mNoiseScale; // Scaling of noise function in perlin space (norm = 1.0)
91 F32 mNoiseMag; // amount of perlin noise to deform by (0 = none)
92 F32 mTaper; // amount of perlin noise to deform by (0 = none)
93 F32 mRepeatTrunkZ; // Times to repeat the trunk texture vertically along trunk
94 };
95
96 static F32 sTreeFactor; // Tree level of detail factor
97
98 friend class LLDrawPoolTree;
99protected:
100 LLVector3 mTrunkBend; // Accumulated wind (used for blowing trees)
101 LLVector3 mTrunkVel; //
102 LLVector3 mWind;
103
104 LLPointer<LLViewerImage> mTreeImagep; // Pointer to proper tree image
105
106 U8 mSpecies; // Species of tree
107 F32 mBranchLength; // Scale (length) of tree branches
108 F32 mTrunkLength; // Trunk length (first recursion)
109 F32 mDroop; // Droop from vertical (degrees) at each branch recursion
110 F32 mTwist; // Twist
111 F32 mBranches; // Number of branches emitted at each recursion level
112 U8 mDepth; // Number of recursions to tips of branches
113 F32 mScaleStep; // Multiplier for scale at each recursion level
114 U8 mTrunkDepth;
115
116 F32 mLeafScale; // Scales leaf texture when rendering
117
118 F32 mBillboardScale; // How big to draw the billboard?
119 F32 mBillboardRatio; // Height to width ratio of billboard
120 F32 mTrunkAspect; // Ratio between width/length of trunk
121 F32 mBranchAspect; // Ratio between width/length of branch
122 F32 mRandomLeafRotate; // How much to randomly rotate leaves about arbitrary axis
123
124 U32 mFrameCount;
125
126 typedef std::map<U32, TreeSpeciesData*> SpeciesMap;
127 static SpeciesMap sSpeciesTable;
128
129 static S32 sLODIndexOffset[4];
130 static S32 sLODIndexCount[4];
131 static S32 sLODVertexOffset[4];
132 static S32 sLODVertexCount[4];
133 static S32 sLODSlices[4];
134 static F32 sLODAngles[4];
135};
136
137#endif
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