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/**
* @file llvolumeoctree.h
* @brief LLVolume octree classes.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* 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_LLVOLUME_OCTREE_H
#define LL_LLVOLUME_OCTREE_H
#include "linden_common.h"
#include "llmemory.h"
#include "lloctree.h"
#include "llvolume.h"
#include "llvector4a.h"
class LLVolumeTriangle : public LLRefCount
{
public:
void* operator new(size_t size)
{
return ll_aligned_malloc_16(size);
}
void operator delete(void* ptr)
{
ll_aligned_free_16(ptr);
}
LLVolumeTriangle()
{
mBinIndex = -1;
}
LLVolumeTriangle(const LLVolumeTriangle& rhs)
{
*this = rhs;
}
const LLVolumeTriangle& operator=(const LLVolumeTriangle& rhs)
{
LL_ERRS() << "Illegal operation!" << LL_ENDL;
return *this;
}
~LLVolumeTriangle()
{
}
LL_ALIGN_16(LLVector4a mPositionGroup);
const LLVector4a* mV[3];
U16 mIndex[3];
F32 mRadius;
mutable S32 mBinIndex;
virtual const LLVector4a& getPositionGroup() const;
virtual const F32& getBinRadius() const;
S32 getBinIndex() const { return mBinIndex; }
void setBinIndex(S32 idx) const { mBinIndex = idx; }
};
class LLVolumeOctreeListener : public LLOctreeListener<LLVolumeTriangle>
{
public:
void* operator new(size_t size)
{
return ll_aligned_malloc_16(size);
}
void operator delete(void* ptr)
{
ll_aligned_free_16(ptr);
}
LLVolumeOctreeListener(LLOctreeNode<LLVolumeTriangle>* node);
~LLVolumeOctreeListener();
LLVolumeOctreeListener(const LLVolumeOctreeListener& rhs)
{
*this = rhs;
}
const LLVolumeOctreeListener& operator=(const LLVolumeOctreeListener& rhs)
{
LL_ERRS() << "Illegal operation!" << LL_ENDL;
return *this;
}
//LISTENER FUNCTIONS
virtual void handleChildAddition(const LLOctreeNode<LLVolumeTriangle>* parent,
LLOctreeNode<LLVolumeTriangle>* child);
virtual void handleStateChange(const LLTreeNode<LLVolumeTriangle>* node) { }
virtual void handleChildRemoval(const LLOctreeNode<LLVolumeTriangle>* parent,
const LLOctreeNode<LLVolumeTriangle>* child) { }
virtual void handleInsertion(const LLTreeNode<LLVolumeTriangle>* node, LLVolumeTriangle* tri) { }
virtual void handleRemoval(const LLTreeNode<LLVolumeTriangle>* node, LLVolumeTriangle* tri) { }
virtual void handleDestruction(const LLTreeNode<LLVolumeTriangle>* node) { }
public:
LL_ALIGN_16(LLVector4a mBounds[2]); // bounding box (center, size) of this node and all its children (tight fit to objects)
LL_ALIGN_16(LLVector4a mExtents[2]); // extents (min, max) of this node and all its children
};
class LLOctreeTriangleRayIntersect : public LLOctreeTraveler<LLVolumeTriangle>
{
public:
const LLVolumeFace* mFace;
LLVector4a mStart;
LLVector4a mDir;
LLVector4a mEnd;
LLVector4a* mIntersection;
LLVector2* mTexCoord;
LLVector4a* mNormal;
LLVector4a* mTangent;
F32* mClosestT;
bool mHitFace;
LLOctreeTriangleRayIntersect(const LLVector4a& start, const LLVector4a& dir,
const LLVolumeFace* face, F32* closest_t,
LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent);
void traverse(const LLOctreeNode<LLVolumeTriangle>* node);
virtual void visit(const LLOctreeNode<LLVolumeTriangle>* node);
};
class LLVolumeOctreeValidate : public LLOctreeTraveler<LLVolumeTriangle>
{
virtual void visit(const LLOctreeNode<LLVolumeTriangle>* branch);
};
#endif
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