public static Mat4 operator *(Mat4 a, Mat4 b)
{
if (a == null)
{
return(null);
}
if (b == null)
{
return(null);
}
Mat4 newMat = new Mat4();
newMat[0] = b.mData[0][0] * a.mData[0][0] +
b.mData[0][1] * a.mData[1][0] +
b.mData[0][2] * a.mData[2][0] +
b.mData[0][3] * a.mData[3][0];
newMat[1] = b.mData[0][0] * a.mData[0][1] +
b.mData[0][1] * a.mData[1][1] +
b.mData[0][2] * a.mData[2][1] +
b.mData[0][3] * a.mData[3][1];
newMat[2] = b.mData[0][0] * a.mData[0][2] +
b.mData[0][1] * a.mData[1][2] +
b.mData[0][2] * a.mData[2][2] +
b.mData[0][3] * a.mData[3][2];
newMat[3] = b.mData[0][0] * a.mData[0][3] +
b.mData[0][1] * a.mData[1][3] +
b.mData[0][2] * a.mData[2][3] +
b.mData[0][3] * a.mData[3][3];
newMat[4] = b.mData[1][0] * a.mData[0][0] +
b.mData[1][1] * a.mData[1][0] +
b.mData[1][2] * a.mData[2][0] +
b.mData[1][3] * a.mData[3][0];
newMat[5] = b.mData[1][0] * a.mData[0][1] +
b.mData[1][1] * a.mData[1][1] +
b.mData[1][2] * a.mData[2][1] +
b.mData[1][3] * a.mData[3][1];
newMat[6] = b.mData[1][0] * a.mData[0][2] +
b.mData[1][1] * a.mData[1][2] +
b.mData[1][2] * a.mData[2][2] +
b.mData[1][3] * a.mData[3][2];
newMat[7] = b.mData[1][0] * a.mData[0][3] +
b.mData[1][1] * a.mData[1][3] +
b.mData[1][2] * a.mData[2][3] +
b.mData[1][3] * a.mData[3][3];
newMat[8] = b.mData[2][0] * a.mData[0][0] +
b.mData[2][1] * a.mData[1][0] +
b.mData[2][2] * a.mData[2][0] +
b.mData[2][3] * a.mData[3][0];
newMat[9] = b.mData[2][0] * a.mData[0][1] +
b.mData[2][1] * a.mData[1][1] +
b.mData[2][2] * a.mData[2][1] +
b.mData[2][3] * a.mData[3][1];
newMat[10] = b.mData[2][0] * a.mData[0][2] +
b.mData[2][1] * a.mData[1][2] +
b.mData[2][2] * a.mData[2][2] +
b.mData[2][3] * a.mData[3][2];
newMat[11] = b.mData[2][0] * a.mData[0][3] +
b.mData[2][1] * a.mData[1][3] +
b.mData[2][2] * a.mData[2][3] +
b.mData[2][3] * a.mData[3][3];
newMat[12] = b.mData[3][0] * a.mData[0][0] +
b.mData[3][1] * a.mData[1][0] +
b.mData[3][2] * a.mData[2][0] +
b.mData[3][3] * a.mData[3][0];
newMat[13] = b.mData[3][0] * a.mData[0][1] +
b.mData[3][1] * a.mData[1][1] +
b.mData[3][2] * a.mData[2][1] +
b.mData[3][3] * a.mData[3][1];
newMat[14] = b.mData[3][0] * a.mData[0][2] +
b.mData[3][1] * a.mData[1][2] +
b.mData[3][2] * a.mData[2][2] +
b.mData[3][3] * a.mData[3][2];
newMat[15] = b.mData[3][0] * a.mData[0][3] +
b.mData[3][1] * a.mData[1][3] +
b.mData[3][2] * a.mData[2][3] +
b.mData[3][3] * a.mData[3][3];
return(newMat);
}
public Mat4(Mat4 mat)
: this()
{
set(mat.mData);
}
