Function apply_matrix_pt

pattern/web/pdf/utils.py:23–25

Applies a matrix to a point.

((a,b,c,d,e,f), (x,y))

    return (a,b,c,d,x*a+y*c+e,x*b+y*d+f)

def apply_matrix_pt((a,b,c,d,e,f), (x,y)):
    """Applies a matrix to a point."""
    return (a*x+c*y+e, b*x+d*y+f)

def apply_matrix_norm((a,b,c,d,e,f), (p,q)):
    """Equivalent to apply_matrix_pt(M, (p,q)) - apply_matrix_pt(M, (0,0))"""