ITriangleSelector.h

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// 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 __I_TRIANGLE_SELECTOR_H_INCLUDED__
#define __I_TRIANGLE_SELECTOR_H_INCLUDED__

#include "IReferenceCounted.h"
#include "triangle3d.h"
#include "aabbox3d.h"
#include "matrix4.h"
#include "line3d.h"
#include "irrArray.h"

namespace irr
{
namespace scene
{

class ISceneNode;
class ITriangleSelector;
class IMeshBuffer;


struct SCollisionTriangleRange
{
        SCollisionTriangleRange()
                : RangeStart(0), RangeSize(0)
                , Selector(0), SceneNode(0)
                , MeshBuffer(0), MaterialIndex(0)
        {}


        bool isIndexInRange(irr::u32 triangleIndex) const
        {
                return triangleIndex >= RangeStart && triangleIndex < RangeStart+RangeSize;
        }

        irr::u32 RangeStart;

        irr::u32 RangeSize;

        ITriangleSelector* Selector;

        ISceneNode* SceneNode;

        const IMeshBuffer* MeshBuffer;

        irr::u32 MaterialIndex;
};


class ITriangleSelector : public virtual IReferenceCounted
{
public:

        virtual s32 getTriangleCount() const = 0;


        virtual void getTriangles(core::triangle3df* triangles, s32 arraySize,
                s32& outTriangleCount, const core::matrix4* transform=0,
                bool useNodeTransform=true,
                irr::core::array<SCollisionTriangleRange>* outTriangleInfo=0) const = 0;


        virtual void getTriangles(core::triangle3df* triangles, s32 arraySize,
                s32& outTriangleCount, const core::aabbox3d<f32>& box,
                const core::matrix4* transform=0, bool useNodeTransform=true,
                irr::core::array<SCollisionTriangleRange>* outTriangleInfo=0) const = 0;


        virtual void getTriangles(core::triangle3df* triangles, s32 arraySize,
                s32& outTriangleCount, const core::line3d<f32>& line,
                const core::matrix4* transform=0, bool useNodeTransform=true,
                irr::core::array<SCollisionTriangleRange>* outTriangleInfo=0) const = 0;


        virtual u32 getSelectorCount() const = 0;


        virtual ITriangleSelector* getSelector(u32 index) = 0;


        virtual const ITriangleSelector* getSelector(u32 index) const = 0;


        virtual ISceneNode* getSceneNodeForTriangle(u32 triangleIndex) const = 0;
};

} // end namespace scene
} // end namespace irr

#endif