src/rcrt/primitives/AABB.h

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#ifndef AABB_H_
#define AABB_H_

#include "Primitive.h"
#include "../Intersection.h"
#include "../Ray.h"
#include "../math/rcrtmath.h"
#include "Axis.hpp"

namespace rcrt
{

class AABB : public Primitive
{
private:
        Point3D minP, maxP, center;
        
public:
        AABB(SolidObject* parent=0);
        
        AABB(const Point3D& min, const Point3D& max, SolidObject* parent=0);
        virtual ~AABB();
        
        virtual Intersection intersect(Ray& r) const;
        virtual const AABB& getBoundingBox() const;
        virtual const Point3D& getCentroid() const;
        
        void extend(const AABB& box);
        
        void extend(const Point3D& p);
        
        float getLength(Axis a) const;
        
        Axis getMainAxis() const;
        
        float getMin(Axis a) const;
        
        float getMax(Axis a) const;
        
        const Point3D& getMinP() const;
        const Point3D& getMaxP() const;
        
        bool equals(const AABB& box) const;
        
        AABB transformed(const Matrix4D& mat) const;
        
        virtual Vec3D getSNormal(float a, float b) const;
        virtual Vec3D getGNormal(float a, float b) const;
        virtual Point2D getUV(float a, float b) const;
        
        float getVolume() const;
        
        float getSurfaceArea() const;
        
        bool isEmpty() const;
        
        void contract(const AABB& box);
        
        virtual void clipPlane(Axis axis, float plane, AABB& lBox, AABB& rBox) const;
};

inline std::ostream& operator<<(std::ostream& o, const AABB& box)
{
        o << "AABB(" << box.getMinP() << ", " << box.getMaxP() << ")";
        return o;
}

}

#endif /*AABB_H_*/

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