llvotreenew.h
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- /**
- * @file llvotreenew.h
- * @brief LLVOTreeNew class header file
- *
- * $LicenseInfo:firstyear=2003&license=viewergpl$
- *
- * Copyright (c) 2003-2010, 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_LLVOTREENEW_H
- #define LL_LLVOTREENEW_H
- #include "llviewerobject.h"
- #include "lldarray.h"
- #include "xform.h"
- #include "lltreeparams.h"
- #include "llstrider.h"
- #include "v2math.h"
- #include "v3math.h"
- #include "llviewertexture.h"
- class LLFace;
- class LLDrawPool;
- // number of static arrays created
- const U8 MAX_SPECIES = 16; // max species of trees
- const U8 MAX_PARTS = 15; // trunk, 2 or 3 branches per species?
- const U8 MAX_RES = 6; // max # cross sections for a branch curve
- const U8 MAX_FLARE = 6; // max # cross sections for flare of trunk
- const U8 MAX_LEVELS = 3;
- // initial vertex array allocations
- const U32 NUM_INIT_VERTS = 5000; // number of vertices/normals/texcoords
- const U32 NUM_INIT_INDICES = 15000; // number of indices to vert array (3 vertices per triangle, roughly 3x)
- const U32 NUM_TIMES_TO_DOUBLE = 2; // if we go over initial allocations, num times to double each step
- // for finding the closest parts...
- // the parts are searched based on:
- const F32 MAX_LOBES_DIFF = 2;
- const F32 MAX_LOBEDEPTH_DIFF = .3f;
- const F32 MAX_CURVEBACK_DIFF = 20.0f;
- const F32 MAX_CURVE_DIFF = 15.0f;
- const F32 MAX_CURVE_V_DIFF = 20.0f;
- const F32 CURVEV_DIVIDER = 10.0f; // curveV/CURVEV_DIVIDER = # branch variances...
- const U8 MAX_VARS = 3; // max number of variations of branches
- const U8 MAX_RAND_NUMS = 100; // max number of rand numbers to pregenerate and store
- // texture params
- const F32 WIDTH_OF_BARK = .48f;
- class LLVOTreeNew : public LLViewerObject
- {
- public:
- // Some random number generators using the pre-generated random numbers
- // return +- negPos
- static S32 llrand_signed(S32 negPos)
- {
- return (ll_rand((U32)negPos * 2) - negPos);
- };
- static S32 llrand_signed(S32 negPos, U32 index)
- {
- return lltrunc((sRandNums[index % MAX_RAND_NUMS] * (negPos * 2.0f) - negPos));
- };
-
- static S32 llrand_unsigned(S32 pos, U32 index)
- {
- return lltrunc((sRandNums[index % MAX_RAND_NUMS] * pos));
- };
- // return +- negPos
- static F32 llfrand_signed(F32 negPos)
- {
- return (ll_frand(negPos * 2.0f) - negPos);
- };
- static F32 llfrand_signed(F32 negPos, U32 index)
- {
- return (sRandNums[index % MAX_RAND_NUMS] * negPos * 2.0f) - negPos;
- };
- static F32 llfrand_unsigned(F32 pos, U32 index)
- {
- return sRandNums[index % MAX_RAND_NUMS] * pos;
- };
- // return between 0-pos
- static F32 llfrand_unsigned(F32 pos)
- {
- return ll_frand(pos);
- };
- static void cleanupTextures() {}; // not needed anymore
- struct TreePart
- {
- F32 mRadius; // scale x/y
- F32 mLength; // scale z
- F32 mCurve;
- F32 mCurveV;
- F32 mCurveRes;
- F32 mCurveBack;
- U8 mLobes;
- F32 mLobeDepth;
- U8 mLevel;
- U32 mNumTris;
- U8 mVertsPerSection;
- U8 mNumVariants;
- // first index into the drawpool arrays for this particular branch
- U32 mIndiceIndex[MAX_VARS];
- U32 mOffsets[MAX_VARS][MAX_RES]; // offsets for the partial branch pieces
- // local section frames for this branch
- LLMatrix4 mFrames[MAX_VARS][(MAX_RES*(MAX_RES + 1))/2]; // (0...n) + (1...n) + ... + (n-1..n)
- LLDynamicArray<LLVector3> mFaceNormals;
- };
- LLVOTreeNew(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
- virtual ~LLVOTreeNew();
- /*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);
- /*virtual*/ void render(LLAgent &agent);
- /*virtual*/ void updateTextures();
- /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
- /*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
- F32 CalcZStep(TreePart *part, U8 section);
- void createPart(U8 level, F32 length, F32 radius, LLStrider<LLVector3> &vertices, LLStrider<LLVector3> &normals,
- LLStrider<LLVector2> &tex_coords, U32 *indices,
- U32 &curVertexIndex, U32 &curTexCoordIndex,
- U32 &curNormalIndex, U32 &curIndiceIndex);
- S32 findSimilarPart(U8 level);
- F32 CalculateSectionRadius(U8 level, F32 y, F32 stemLength, F32 stemRadius);
- //F32 CalculateVerticalAttraction(U8 level, LLMatrix4 §ionFrame);
- void createSection(LLMatrix4 &frame, TreePart *part, F32 sectionRadius, F32 stemZ,
- LLStrider<LLVector3> &vertices, LLStrider<LLVector2> &tex_coords, U32 *indices,
- U32 &curVertexIndex, U32 &curTexCoordIndex, U32 &curIndiceIndex, U8 curSection, BOOL firstBranch);
- void genIndicesAndFaceNormalsForLastSection(TreePart *part, U8 numVerts, LLStrider<LLVector3> &vertices, U32 curVertexIndex, U32 *indices, U32 &curIndiceIndex, BOOL firstBranch);
- void genVertexNormals(TreePart *part, LLStrider<LLVector3> &normals, U8 numSections, U32 curNormalOffset);
- void drawTree(LLDrawPool &draw_pool, const LLMatrix4 &frame, U8 level, F32 offsetChild, F32 curLength, F32 parentLength, F32 curRadius, F32 parentRadius, U8 part, U8 variant, U8 startSection);
- void drawTree(LLDrawPool &draw_pool);
-
- //LLTreeParams mParams;
- U8 mSpecies;
- LLPointer<LLViewerTexture> mTreeImagep;
- LLMatrix4 mTrunkFlareFrames[MAX_FLARE];
- F32 mSegSplitsError[3];
- U32 mRandOffset[MAX_LEVELS];
- U32 mNumTrisDrawn;
- U32 mTotalIndices;
- U32 mTotalVerts;
- static void initClass();
- // tree params
- static LLTreeParams sParameters;
- // next indexes used to drawpool arrays
- static U32 sNextVertexIndex[MAX_SPECIES];
- static U32 sNextIndiceIndex[MAX_SPECIES];
- // tree parts
- static U32 sNextPartIndex[MAX_PARTS];
- static TreePart sTreeParts[MAX_SPECIES][MAX_PARTS];
- // species images
- static LLUUID sTreeImageIDs[MAX_SPECIES];
- // random numbers
- static F32 sRandNums[MAX_RAND_NUMS];
- // usage data
- static U32 sTreePartsUsed[MAX_SPECIES][MAX_PARTS][MAX_VARS];
-
-
- };
- #endif