tgMatrix3.cpp

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//CPP:
//                      Title:                  class tgMatrix3
//                      File:                           tgMatrix3.cpp
//
//                      Function:               tgMatrix3 with all necessary operations 
//
//                      Author:                 Thomas M�rwald
//                      Date:                           20.09.2007
// ----------------------------------------------------------------------------
#include <blort/TomGine/tgMatrix3.h>

using namespace TomGine;

tgMatrix3::tgMatrix3(){
        for(int i=0; i<9; i++)
                m[i] = 0.0f;
}

tgMatrix3::tgMatrix3(tgVector3 x, tgVector3 y, tgVector3 z){
        m[0] = x.x;     m[1] = y.x;     m[2] = z.x;
        m[3] = x.y; m[4] = y.y; m[5] = z.y;
        m[6] = x.z; m[7] = y.z; m[8] = z.z;
}

tgMatrix3::tgMatrix3(const tgMatrix3 &m1){
        m[0]=m1.m[0];   m[1]=m1.m[1];   m[2]=m1.m[2];
        m[3]=m1.m[3];   m[4]=m1.m[4];   m[5]=m1.m[5];
        m[6]=m1.m[6];   m[7]=m1.m[7];   m[8]=m1.m[8];
}

tgMatrix3::tgMatrix3(   float m0, float m1, float m2,
                                        float m3, float m4, float m5,
                                        float m6, float m7, float m8){
        m[0]=m0; m[1]=m1; m[2]=m2;
        m[3]=m3; m[4]=m4; m[5]=m5;
        m[6]=m6; m[7]=m7; m[8]=m8;

}

tgMatrix3 tgMatrix3::operator+(tgMatrix3 m1){
        tgMatrix3 m2;
        return m2;
}

tgMatrix3 tgMatrix3::operator-(tgMatrix3 m1){
        tgMatrix3 m2;
        return m2;
}

tgMatrix3 tgMatrix3::operator*(tgMatrix3 m1){
        tgMatrix3 m2;
        
        m2.m[0] = m[0]*m1.m[0]  +       m[1]*m1.m[3]    +       m[2]*m1.m[6];
        m2.m[1] = m[0]*m1.m[1]  +       m[1]*m1.m[4]    +       m[2]*m1.m[7];
        m2.m[2] = m[0]*m1.m[2]  +       m[1]*m1.m[5]    +       m[2]*m1.m[8];
        
        m2.m[3] = m[3]*m1.m[0]  +       m[4]*m1.m[3]    +       m[5]*m1.m[6];
        m2.m[4] = m[3]*m1.m[1]  +       m[4]*m1.m[4]    +       m[5]*m1.m[7];
        m2.m[5] = m[3]*m1.m[2]  +       m[4]*m1.m[5]    +       m[5]*m1.m[8];
        
        m2.m[6] = m[6]*m1.m[0]  +       m[7]*m1.m[3]    +       m[8]*m1.m[6];
        m2.m[7] = m[6]*m1.m[1]  +       m[7]*m1.m[4]    +       m[8]*m1.m[7];
        m2.m[8] = m[6]*m1.m[2]  +       m[7]*m1.m[5]    +       m[8]*m1.m[8];
        
        return m2;      
}

tgMatrix3 tgMatrix3::operator*(float f){
        tgMatrix3 m2;
        return m2;
}

tgVector3 tgMatrix3::operator*(tgVector3 v1){
        tgVector3 v2;
        
        v2.x = m[0]*v1.x + m[1]*v1.y + m[2]*v1.z;
        v2.y = m[3]*v1.x + m[4]*v1.y + m[5]*v1.z;
        v2.z = m[6]*v1.x + m[7]*v1.y + m[8]*v1.z;
        
        return v2;
}

void tgMatrix3::transpose(){
        tgMatrix3 m1 = tgMatrix3(*this);
        
        m[0]=m1.m[0];   m[1]=m1.m[3];   m[2]=m1.m[6];
        m[3]=m1.m[1];   m[4]=m1.m[4];   m[5]=m1.m[7];
        m[6]=m1.m[2];   m[7]=m1.m[5];   m[8]=m1.m[8];
}