Function mult_matrix

pattern/web/pdf/utils.py:13–17

Returns the multiplication of two matrices.

((a1,b1,c1,d1,e1,f1), (a0,b0,c0,d0,e0,f0))

MATRIX_IDENTITY = (1, 0, 0, 1, 0, 0)

def mult_matrix((a1,b1,c1,d1,e1,f1), (a0,b0,c0,d0,e0,f0)):
    """Returns the multiplication of two matrices."""
    return (a0*a1+c0*b1,    b0*a1+d0*b1,
            a0*c1+c0*d1,    b0*c1+d0*d1,
            a0*e1+c0*f1+e0, b0*e1+d0*f1+f0)

def translate_matrix((a,b,c,d,e,f), (x,y)):
    """Translates a matrix by (x,y)."""