llvotree.h
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- /**
- * @file llvotree.h
- * @brief LLVOTree class header file
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_LLVOTREE_H
- #define LL_LLVOTREE_H
- #include "llviewerobject.h"
- #include "lldarray.h"
- #include "xform.h"
- class LLFace;
- class LLDrawPool;
- class LLViewerFetchedTexture;
- class LLVOTree : public LLViewerObject
- {
- protected:
- ~LLVOTree();
- public:
- enum
- {
- VERTEX_DATA_MASK = (1 << LLVertexBuffer::TYPE_VERTEX) |
- (1 << LLVertexBuffer::TYPE_NORMAL) |
- (1 << LLVertexBuffer::TYPE_TEXCOORD0)
- };
- LLVOTree(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
- // Initialize data that's only inited once per class.
- static void initClass();
- static void cleanupClass();
- /*virtual*/ U32 processUpdateMessage(LLMessageSystem *mesgsys,
- void **user_data,
- U32 block_num, const EObjectUpdateType update_type,
- LLDataPacker *dp);
- /*virtual*/ BOOL idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time);
-
- // Graphical stuff for objects - maybe broken out into render class later?
- /*virtual*/ void render(LLAgent &agent);
- /*virtual*/ void setPixelAreaAndAngle(LLAgent &agent);
- /*virtual*/ void updateTextures();
- /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
- /*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
- /*virtual*/ void updateSpatialExtents(LLVector3 &min, LLVector3 &max);
- virtual U32 getPartitionType() const;
- void updateRadius();
- void calcNumVerts(U32& vert_count, U32& index_count, S32 trunk_LOD, S32 stop_level, U16 depth, U16 trunk_depth, F32 branches);
- void updateMesh();
- void appendMesh(LLStrider<LLVector3>& vertices,
- LLStrider<LLVector3>& normals,
- LLStrider<LLVector2>& tex_coords,
- LLStrider<U16>& indices,
- U16& idx_offset,
- LLMatrix4& matrix,
- LLMatrix4& norm_mat,
- S32 vertex_offset,
- S32 vertex_count,
- S32 index_count,
- S32 index_offset);
- void genBranchPipeline(LLStrider<LLVector3>& vertices,
- LLStrider<LLVector3>& normals,
- LLStrider<LLVector2>& tex_coords,
- LLStrider<U16>& indices,
- U16& index_offset,
- LLMatrix4& matrix,
- S32 trunk_LOD,
- S32 stop_level,
- U16 depth,
- U16 trunk_depth,
- F32 scale,
- F32 twist,
- F32 droop,
- F32 branches,
- F32 alpha);
- U32 drawBranchPipeline(LLMatrix4& matrix, U16* indicesp, S32 trunk_LOD, S32 stop_level, U16 depth, U16 trunk_depth, F32 scale, F32 twist, F32 droop, F32 branches, F32 alpha);
-
- /*virtual*/ BOOL lineSegmentIntersect(const LLVector3& start, const LLVector3& end,
- S32 face = -1, // which face to check, -1 = ALL_SIDES
- BOOL pick_transparent = FALSE,
- S32* face_hit = NULL, // which face was hit
- LLVector3* intersection = NULL, // return the intersection point
- LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point
- LLVector3* normal = NULL, // return the surface normal at the intersection point
- LLVector3* bi_normal = NULL // return the surface bi-normal at the intersection point
- );
- static S32 sMaxTreeSpecies;
- struct TreeSpeciesData
- {
- LLUUID mTextureID;
-
- F32 mBranchLength; // Scale (length) of tree branches
- F32 mDroop; // Droop from vertical (degrees) at each branch recursion
- F32 mTwist; // Twist
- F32 mBranches; // Number of branches emitted at each recursion level
- U8 mDepth; // Number of recursions to tips of branches
- F32 mScaleStep; // Multiplier for scale at each recursion level
- U8 mTrunkDepth;
- F32 mLeafScale; // Scales leaf texture when rendering
- F32 mTrunkLength; // Scales branch diameters when rendering
- F32 mBillboardScale; // Scales the billboard representation
- F32 mBillboardRatio; // Height to width aspect ratio
- F32 mTrunkAspect;
- F32 mBranchAspect;
- F32 mRandomLeafRotate;
- F32 mNoiseScale; // Scaling of noise function in perlin space (norm = 1.0)
- F32 mNoiseMag; // amount of perlin noise to deform by (0 = none)
- F32 mTaper; // amount of perlin noise to deform by (0 = none)
- F32 mRepeatTrunkZ; // Times to repeat the trunk texture vertically along trunk
- };
- static F32 sTreeFactor; // Tree level of detail factor
- friend class LLDrawPoolTree;
- protected:
- LLVector3 mTrunkBend; // Accumulated wind (used for blowing trees)
- LLVector3 mTrunkVel; //
- LLVector3 mWind;
- LLPointer<LLVertexBuffer> mReferenceBuffer; //reference geometry for generating tree mesh
- LLPointer<LLViewerFetchedTexture> mTreeImagep; // Pointer to proper tree image
- U8 mSpecies; // Species of tree
- F32 mBranchLength; // Scale (length) of tree branches
- F32 mTrunkLength; // Trunk length (first recursion)
- F32 mDroop; // Droop from vertical (degrees) at each branch recursion
- F32 mTwist; // Twist
- F32 mBranches; // Number of branches emitted at each recursion level
- U8 mDepth; // Number of recursions to tips of branches
- F32 mScaleStep; // Multiplier for scale at each recursion level
- U8 mTrunkDepth;
- U32 mTrunkLOD;
- F32 mLeafScale; // Scales leaf texture when rendering
- F32 mBillboardScale; // How big to draw the billboard?
- F32 mBillboardRatio; // Height to width ratio of billboard
- F32 mTrunkAspect; // Ratio between width/length of trunk
- F32 mBranchAspect; // Ratio between width/length of branch
- F32 mRandomLeafRotate; // How much to randomly rotate leaves about arbitrary axis
- // cache last position+rotation so we can detect the need for a
- // complete rebuild when not animating
- LLVector3 mLastPosition;
- LLQuaternion mLastRotation;
- U32 mFrameCount;
- typedef std::map<U32, TreeSpeciesData*> SpeciesMap;
- static SpeciesMap sSpeciesTable;
- static S32 sLODIndexOffset[4];
- static S32 sLODIndexCount[4];
- static S32 sLODVertexOffset[4];
- static S32 sLODVertexCount[4];
- static S32 sLODSlices[4];
- static F32 sLODAngles[4];
- };
- #endif