/** * @file llvograss.h * @brief Description of LLVOGrass class * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #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_