llvograss.h
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- /**
- * @file llvograss.h
- * @brief Description of LLVOGrass class
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, 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_LLVOGRASS_H
- #define LL_LLVOGRASS_H
- #include "llviewerobject.h"
- #include "lldarray.h"
- #include <map>
- class LLSurfacePatch;
- class LLViewerTexture;
- class LLVOGrass : public LLAlphaObject
- {
- public:
- LLVOGrass(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 getPartitionType() const;
- /*virtual*/ U32 processUpdateMessage(LLMessageSystem *mesgsys,
- void **user_data,
- U32 block_num,
- const EObjectUpdateType update_type,
- LLDataPacker *dp);
- static void import(LLFILE *file, LLMessageSystem *mesgsys, const LLVector3 &pos);
- /*virtual*/ void exportFile(LLFILE *file, const LLVector3 &position);
- void updateDrawable(BOOL force_damped);
- /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
- /*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
- /*virtual*/ void getGeometry(S32 idx,
- LLStrider<LLVector3>& verticesp,
- LLStrider<LLVector3>& normalsp,
- LLStrider<LLVector2>& texcoordsp,
- LLStrider<LLColor4U>& colorsp,
- LLStrider<U16>& indicesp);
- void updateFaceSize(S32 idx) { }
- /*virtual*/ void updateTextures();
- /*virtual*/ BOOL updateLOD();
- /*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
- void plantBlades();
- /*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
- BOOL idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time);
- /*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 sMaxGrassSpecies;
- struct GrassSpeciesData
- {
- LLUUID mTextureID;
-
- F32 mBladeSizeX;
- F32 mBladeSizeY;
- };
- typedef std::map<U32, GrassSpeciesData*> SpeciesMap;
- U8 mSpecies; // Species of grass
- F32 mBladeSizeX;
- F32 mBladeSizeY;
-
- LLSurfacePatch *mPatch; // Stores the land patch where the grass is centered
- U64 mLastPatchUpdateTime;
- LLVector3 mGrassBend; // Accumulated wind (used for blowing trees)
- LLVector3 mGrassVel;
- LLVector3 mWind;
- F32 mBladeWindAngle;
- F32 mBWAOverlap;
- protected:
- ~LLVOGrass();
- private:
- void updateSpecies();
- F32 mLastHeight; // For cheap update hack
- S32 mNumBlades;
- static SpeciesMap sSpeciesTable;
- };
- #endif // LL_VO_GRASS_