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/**
* @file llvolumeoctree.h
* @brief LLVolume octree classes.
*
* $LicenseInfo:firstyear=2002&license=viewergpl$
*
* Copyright (c) 2002-2009, 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_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 LLVolumeOctreeListener : public LLOctreeListener<LLVolumeTriangle>
{
public:
LLVolumeOctreeListener(LLOctreeNode<LLVolumeTriangle>* node);
~LLVolumeOctreeListener();
LLVolumeOctreeListener(const LLVolumeOctreeListener& rhs)
{
*this = rhs;
}
const LLVolumeOctreeListener& operator=(const LLVolumeOctreeListener& rhs)
{
llerrs << "Illegal operation!" << llendl;
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:
LLVector4a* mBounds; // bounding box (center, size) of this node and all its children (tight fit to objects)
LLVector4a* mExtents; // 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;
LLVector3* mIntersection;
LLVector2* mTexCoord;
LLVector3* mNormal;
LLVector3* mBinormal;
F32* mClosestT;
bool mHitFace;
LLOctreeTriangleRayIntersect(const LLVector4a& start, const LLVector4a& dir,
const LLVolumeFace* face, F32* closest_t,
LLVector3* intersection,LLVector2* tex_coord, LLVector3* normal, LLVector3* bi_normal);
void traverse(const LLOctreeNode<LLVolumeTriangle>* node);
virtual void visit(const LLOctreeNode<LLVolumeTriangle>* node);
};
class LLVolumeTriangle : public LLRefCount
{
public:
LLVolumeTriangle()
{
mPositionGroup = (LLVector4a*) ll_aligned_malloc_16(16);
}
LLVolumeTriangle(const LLVolumeTriangle& rhs)
{
*this = rhs;
}
const LLVolumeTriangle& operator=(const LLVolumeTriangle& rhs)
{
llerrs << "Illegal operation!" << llendl;
return *this;
}
~LLVolumeTriangle()
{
ll_aligned_free_16(mPositionGroup);
}
const LLVector4a* mV[3];
U16 mIndex[3];
LLVector4a* mPositionGroup;
F32 mRadius;
virtual const LLVector4a& getPositionGroup() const;
virtual const F32& getBinRadius() const;
};
class LLVolumeOctreeValidate : public LLOctreeTraveler<LLVolumeTriangle>
{
virtual void visit(const LLOctreeNode<LLVolumeTriangle>* branch);
};
#endif
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