84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in irrlicht.h
|
|
|
|
#ifndef IRR_C_OCTREE_TRIANGLE_SELECTOR_H_INCLUDED
|
|
#define IRR_C_OCTREE_TRIANGLE_SELECTOR_H_INCLUDED
|
|
|
|
#include "CTriangleSelector.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace scene
|
|
{
|
|
|
|
class ISceneNode;
|
|
|
|
//! Stupid triangle selector without optimization
|
|
class COctreeTriangleSelector : public CTriangleSelector
|
|
{
|
|
public:
|
|
|
|
//! Constructs a selector based on a mesh
|
|
COctreeTriangleSelector(const IMesh* mesh, ISceneNode* node, s32 minimalPolysPerNode);
|
|
|
|
//! Constructs a selector based on a meshbuffer
|
|
COctreeTriangleSelector(const IMeshBuffer* meshBuffer, irr::u32 materialIndex, ISceneNode* node, s32 minimalPolysPerNode);
|
|
|
|
virtual ~COctreeTriangleSelector();
|
|
|
|
//! Gets all triangles which lie within a specific bounding box.
|
|
virtual void getTriangles(core::triangle3df* triangles, s32 arraySize, s32& outTriangleCount,
|
|
const core::aabbox3d<f32>& box, const core::matrix4* transform, bool useNodeTransform,
|
|
irr::core::array<SCollisionTriangleRange>* outTriangleInfo) const IRR_OVERRIDE;
|
|
|
|
//! Gets all triangles which have or may have contact with a 3d line.
|
|
virtual void getTriangles(core::triangle3df* triangles, s32 arraySize,
|
|
s32& outTriangleCount, const core::line3d<f32>& line,
|
|
const core::matrix4* transform, bool useNodeTransform,
|
|
irr::core::array<SCollisionTriangleRange>* outTriangleInfo) const IRR_OVERRIDE;
|
|
|
|
private:
|
|
|
|
struct SOctreeNode
|
|
{
|
|
SOctreeNode()
|
|
{
|
|
for (u32 i=0; i!=8; ++i)
|
|
Child[i] = 0;
|
|
}
|
|
|
|
~SOctreeNode()
|
|
{
|
|
for (u32 i=0; i!=8; ++i)
|
|
delete Child[i];
|
|
}
|
|
|
|
core::array<core::triangle3df> Triangles;
|
|
SOctreeNode* Child[8];
|
|
core::aabbox3d<f32> Box;
|
|
};
|
|
|
|
|
|
void constructOctree(SOctreeNode* node);
|
|
void deleteEmptyNodes(SOctreeNode* node);
|
|
void getTrianglesFromOctree(SOctreeNode* node, s32& trianglesWritten,
|
|
s32 maximumSize, const core::aabbox3d<f32>& box,
|
|
const core::matrix4* transform,
|
|
core::triangle3df* triangles) const;
|
|
|
|
void getTrianglesFromOctree(SOctreeNode* node, s32& trianglesWritten,
|
|
s32 maximumSize, const core::line3d<f32>& line,
|
|
const core::matrix4* transform,
|
|
core::triangle3df* triangles) const;
|
|
|
|
SOctreeNode* Root;
|
|
s32 NodeCount;
|
|
s32 MinimalPolysPerNode;
|
|
};
|
|
|
|
} // end namespace scene
|
|
} // end namespace irr
|
|
|
|
#endif
|