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/**
* @file llvosurfacepatch.h
* @brief Description of LLVOSurfacePatch 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_VOSURFACEPATCH_H
#define LL_VOSURFACEPATCH_H
#include "llviewerobject.h"
#include "llstrider.h"
class LLSurfacePatch;
class LLDrawPool;
class LLVector2;
class LLFacePool;
class LLFace;
class LLVOSurfacePatch : public LLStaticViewerObject
{
public:
static F32 sLODFactor;
enum
{
VERTEX_DATA_MASK = (1 << LLVertexBuffer::TYPE_VERTEX) |
(1 << LLVertexBuffer::TYPE_NORMAL) |
(1 << LLVertexBuffer::TYPE_TEXCOORD0) |
(1 << LLVertexBuffer::TYPE_TEXCOORD1)
};
LLVOSurfacePatch(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
/*virtual*/ void markDead();
// Initialize data that's only inited once per class.
static void initClass();
virtual U32 getPartitionType() const;
/*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
/*virtual*/ void updateGL();
/*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
/*virtual*/ BOOL updateLOD();
/*virtual*/ void updateFaceSize(S32 idx);
void getTerrainGeometry(LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U16> &indicesp);
/*virtual*/ void updateTextures();
/*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
/*virtual*/ void updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax);
/*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
void setPatch(LLSurfacePatch *patchp);
LLSurfacePatch *getPatch() const { return mPatchp; }
void dirtyPatch();
void dirtyGeom();
/*virtual*/ BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
S32 face = -1, // which face to check, -1 = ALL_SIDES
BOOL pick_transparent = FALSE,
BOOL pick_rigged = FALSE,
BOOL pick_unselectable = TRUE,
S32* face_hit = NULL, // which face was hit
LLVector4a* intersection = NULL, // return the intersection point
LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point
LLVector4a* normal = NULL, // return the surface normal at the intersection point
LLVector4a* tangent = NULL // return the surface tangent at the intersection point
);
BOOL mDirtiedPatch;
protected:
~LLVOSurfacePatch();
LLFacePool *mPool;
LLFacePool *getPool();
S32 mBaseComp;
LLSurfacePatch *mPatchp;
BOOL mDirtyTexture;
BOOL mDirtyTerrain;
S32 mLastNorthStride;
S32 mLastEastStride;
S32 mLastStride;
S32 mLastLength;
void getGeomSizesMain(const S32 stride, S32 &num_vertices, S32 &num_indices);
void getGeomSizesNorth(const S32 stride, const S32 north_stride,
S32 &num_vertices, S32 &num_indices);
void getGeomSizesEast(const S32 stride, const S32 east_stride,
S32 &num_vertices, S32 &num_indices);
void updateMainGeometry(LLFace *facep,
LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U16> &indicesp,
U32 &index_offset);
void updateNorthGeometry(LLFace *facep,
LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U16> &indicesp,
U32 &index_offset);
void updateEastGeometry(LLFace *facep,
LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U16> &indicesp,
U32 &index_offset);
};
#endif // LL_VOSURFACEPATCH_H
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