RayCollider.h

#pragma once

#include "Collider.h"
#include "ShapeAABB.h"
#include "ShapeRay.h"
#include "ShapeOBB.h"

namespace ParaEngine
{
    class CRayCollider : public Collider
    {
    public:
        CRayCollider(void);
        ~CRayCollider(void);
    public:
        bool Collide(const CShapeRay& world_ray, const CShapeAABB& world_AABB, const Matrix4* world=NULL);
        bool Collide(const CShapeRay& world_ray, const CShapeOBB& world_oob);
        bool Intersect(const CShapeRay& world_ray, const CShapeAABB& world_AABB, float * pDist, const Matrix4* world=NULL);
        bool Intersect(const CShapeRay& world_ray, const CShapeOBB& world_oob, float * pDist);
        void SetCulling(bool flag);

        void SetMaxDist(float max_dist);
    
    protected:
        // Ray in local space
        Vector3 mOrigin; 
        Vector3 mDir;   
        Vector3 mFDir;  
        Vector3 mData, mData2;

        // Dequantization coeffs
        Vector3 mCenterCoeff;
        Vector3 mExtentsCoeff;
        // Settings
        float mMaxDist; 
        bool mCulling; 

        // Overlap tests

        bool RayAABBOverlap(const Vector3& center, const Vector3& extents);

        bool SegmentAABBOverlap(const Vector3& center, const Vector3& extents);
        // TODO:
        bool RayTriOverlap(const Vector3& vert0, const Vector3& vert1, const Vector3& vert2);

        bool InitQuery(const CShapeRay& world_ray, const Matrix4* world=NULL);
    };

}