57 lines
1.4 KiB
C++
Executable File
57 lines
1.4 KiB
C++
Executable File
///////////////////////////////////////////////////////////////////////////////
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//
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// Name: Bound.h
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// Author: Rich Cross
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// Contact: rich@wildfiregames.com
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _BOUND_H
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#define _BOUND_H
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// necessary includes
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#include "Vector3D.h"
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#include "Matrix3D.h"
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///////////////////////////////////////////////////////////////////////////////
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// CBound: basic axis aligned bounding box class
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class CBound
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{
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public:
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CBound() {}
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CBound(const CVector3D& min,const CVector3D& max) {
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m_Data[0]=min; m_Data[1]=max;
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}
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void Transform(const CMatrix3D& m,CBound& result) const;
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CVector3D& operator[](int index) { return m_Data[index]; }
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const CVector3D& operator[](int index) const { return m_Data[index]; }
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void SetEmpty();
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bool IsEmpty();
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CBound& operator+=(const CBound& b);
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CBound& operator+=(const CVector3D& pt);
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bool RayIntersect(const CVector3D& origin,const CVector3D& dir,float& tmin,float& tmax) const;
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// return the volume of this bounding box
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float GetVolume() const {
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CVector3D v=m_Data[1]-m_Data[0];
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return v.X*v.Y*v.Z;
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}
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// return the centre of this bounding box
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void GetCentre(CVector3D& centre) const {
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centre=(m_Data[0]+m_Data[1])*0.5f;
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}
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private:
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CVector3D m_Data[2];
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};
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#endif
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