espaço canônico para o espaço da tela

Matrix mT, mS, mI, mG;
    int xMax = 2, xMin = -2, yMax = 2, yMin = -2;

    mT.m_M[0][3] = ((IMAGE_WIDTH-1) / xMax - xMin);
    mT.m_M[1][3] = ((IMAGE_HEIGHT-1) / yMax - yMin);

    mS.m_M[0][0] = ((IMAGE_WIDTH-1)/(xMax - xMin));
    mS.m_M[1][1] = ((IMAGE_HEIGHT-1)/(yMax - yMin));

    mI.m_M[1][1] = -1;

    mG = mT * mS * mI;

    for(int i=0; i < objData->faceCount; i++)
        for(int j=0; j < 3; j++)
              V_Transf2[i][j] = mG *  V_Transf2[i][j];



    for(int i=0; i < objData->faceCount; i++)
    {
        for(int j=0; j < 3; j++)
            for(int k=0; k < 3; k++)
            {
                 V_Transf2[i][j].m_V[k] = round(  V_Transf2[i][j].m_V[k]);
            }
        DrawTriangle( &V_Transf2[i][0],   &V_Transf2[i][1],   &V_Transf2[i][2], cor,cor);

    }