/** * @file llvograss.h * @brief Description of LLVOGrass class * * $LicenseInfo:firstyear=2001&license=viewergpl$ * * Copyright (c) 2001-2009, 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_