irrlicht/source/Irrlicht/CTerrainTriangleSelector.h

90 lines
2.6 KiB
C++

// Copyright (C) 2002-2007 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
// The code for the TerrainTriangleSelector is based on the GeoMipMapSelector
// developed by Spintz. He made it available for Irrlicht and allowed it to be
// distributed under this licence. I only modified some parts. A lot of thanks go to him.
#ifndef __C_TERRAIN_TRIANGLE_SELECTOR_H__
#define __C_TERRAIN_TRIANGLE_SELECTOR_H__
#include "ITriangleSelector.h"
#include "IMesh.h"
#include "irrArray.h"
namespace irr
{
namespace scene
{
class ITerrainSceneNode;
//! Triangle Selector for the TerrainSceneNode
//! The code for the TerrainTriangleSelector is based on the GeoMipMapSelector
//! developed by Spintz. He made it available for Irrlicht and allowed it to be
//! distributed under this licence. I only modified some parts. A lot of thanks go to him.
class CTerrainTriangleSelector : public ITriangleSelector
{
public:
//! Constructs a selector based on an IGeoMipMapSceneNode
CTerrainTriangleSelector(ITerrainSceneNode* node, s32 LOD );
//! Destructor
~CTerrainTriangleSelector();
//! Clears and sets triangle data
virtual void setTriangleData ( ITerrainSceneNode* node, s32 LOD );
//! Gets all triangles.
void getTriangles ( core::triangle3df* triangles, s32 arraySize, s32& outTriangleCount,
const core::matrix4* transform = 0 );
//! Gets all triangles which lie within a specific bounding box.
void getTriangles ( core::triangle3df* triangles, s32 arraySize, s32& outTriangleCount,
const core::aabbox3d<f32>& box, const core::matrix4* transform = 0 );
//! 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 = 0 );
//! Returns amount of all available triangles in this selector
virtual s32 getTriangleCount ( ) const;
private:
friend class CTerrainSceneNode;
struct SGeoMipMapTrianglePatch
{
core::array<core::triangle3df> Triangles;
s32 NumTriangles;
core::aabbox3df Box;
};
struct SGeoMipMapTrianglePatches
{
SGeoMipMapTrianglePatches ( )
{
TotalTriangles = 0;
NumPatches = 0;
}
core::array<SGeoMipMapTrianglePatch> TrianglePatchArray;
s32 NumPatches;
u32 TotalTriangles;
};
ITerrainSceneNode* SceneNode;
SGeoMipMapTrianglePatches TrianglePatches;
};
} // end namespace scene
} // end namespace irr
#endif // __C_TERRAIN_TRIANGLE_SELECTOR_H__