Frm_3DMath.h

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// Frm_3DMath.h
// Declares vector, matrix, rectangles and defines special
// array elements
 
#ifndef FRM_MATH_H
#define FRM_MATH_H
 
#include <mem.h>
 
namespace Frm {
 
template<typename T, int size>
struct Array {
        T data[size];
   Array(void){memset(data, 0, size * sizeof(T));};
   Array(const Array<T, size> &pA){memcpy(data, pA.data, size * sizeof(T));};
   Array(const T* pT){memcpy(data, pT, size * sizeof(T));};
 
        Array<T, size>& operator=(Array<T, size> pA)
        {memcpy(data, pA.data, size * sizeof(T)); return *this;};
   Array<T, size>& operator+=(Array<T, size> &pA);
   Array<T, size> Mult(const T pScalar);
   Array<T, size> operator+(Array<T, size> &pA);
   T operator[](int index)const{return data[index];};
   T& operator[](int index){return data[index];};
};
 
typedef Array<float, 3> Vertex;
typedef Array<float, 2> TCoord;
typedef Array<float, 4> Color4;
typedef Array<float, 3> Color3;
 
template<typename T>
Array<T, 4> Set4(T px, T py, T pz, T pw){T data[4]; data[0]=px; data[1]=py; data[2]=pz; data[3]=pw;return Array<T, 4>(data);};
 
template<typename T>
Array<T, 3> Set3(T px, T py, T pz){T data[3]; data[0]=px; data[1]=py; data[2]=pz;return Array<T, 3>(data);};
 
template<typename T>
Array<T, 2> Set2(T pu, T pv){T data[2]; data[0]=pu; data[1]=pv;return Array<T, 2>(data);};
 
 
template<typename T, int size>
Array<T, size>& Array<T, size>::operator+=(Array<T, size> &pA)
{
   for (int i= 0; i< size; i++)
        data[i] += pA.data[i];
   return *this;
}
 
template<typename T, int size>
Array<T, size> Array<T, size>::Mult(const T pScalar)
{
        T rdata[size];
   memcpy(rdata, data, size * sizeof(T));
   for (int i= 0; i< size; i++)
        rdata[i]*=pScalar;
   return Array<T,size>(rdata);
}
 
template<typename T, int size>
Array<T, size> Array<T, size>::operator+(Array<T, size> &pA)
{
        T rdata[size];
   for (int i= 0; i< size; i++)
        rdata[i]=data[i] + pA.data[i];
   return Array<T,size>(rdata);
};
 
 
};
#endif