public static bool IsIdentity( ref DX.Matrix matrix )
{
if ( matrix.M11 == 1.0f &&
matrix.M12 == 0.0f &&
matrix.M13 == 0.0f &&
matrix.M14 == 0.0f &&
matrix.M21 == 0.0f &&
matrix.M22 == 1.0f &&
matrix.M23 == 0.0f &&
matrix.M24 == 0.0f &&
matrix.M31 == 0.0f &&
matrix.M32 == 0.0f &&
matrix.M33 == 1.0f &&
matrix.M34 == 0.0f &&
matrix.M41 == 0.0f &&
matrix.M42 == 0.0f &&
matrix.M43 == 0.0f &&
matrix.M44 == 1.0f )
{
return true;
}
else
{
return false;
}
}
