Class Matrix

src/__init__.py:8630–8869

class Matrix:

    def __abs__(self):
        return math.sqrt(sum([c*c for c in self]))

    def __add__(self, m):
        if hasattr(m, "__float__"):
            return Matrix(self.a + m, self.b + m, self.c + m,
                          self.d + m, self.e + m, self.f + m)
        if len(m) != 6:
            raise ValueError("Matrix: bad seq len")
        return Matrix(self.a + m[0], self.b + m[1], self.c + m[2],
                          self.d + m[3], self.e + m[4], self.f + m[5])

    def __bool__(self):
        return not (max(self) == min(self) == 0)

    def __eq__(self, mat):
        if not hasattr(mat, "__len__"):
            return False
        return len(mat) == 6 and not (self - mat)

    def __getitem__(self, i):
        return (self.a, self.b, self.c, self.d, self.e, self.f)[i]

    def __init__(self, *args, a=None, b=None, c=None, d=None, e=None, f=None):
        """
        Matrix() - all zeros
        Matrix(a, b, c, d, e, f)
        Matrix(zoom-x, zoom-y) - zoom
        Matrix(shear-x, shear-y, 1) - shear
        Matrix(degree) - rotate
        Matrix(Matrix) - new copy
        Matrix(sequence) - from 'sequence'
        Matrix(mupdf.FzMatrix) - from MuPDF class wrapper for fz_matrix.
        
        Explicit keyword args a, b, c, d, e, f override any earlier settings if
        not None.
        """
        if not args:
            self.a = self.b = self.c = self.d = self.e = self.f = 0.0
        elif len(args) > 6:
            raise ValueError("Matrix: bad seq len")
        elif len(args) == 6:  # 6 numbers
            self.a, self.b, self.c, self.d, self.e, self.f = map(float, args)
        elif len(args) == 1:  # either an angle or a sequ
            if isinstance(args[0], mupdf.FzMatrix):
                self.a = args[0].a
                self.b = args[0].b
                self.c = args[0].c
                self.d = args[0].d
                self.e = args[0].e
                self.f = args[0].f
            elif hasattr(args[0], "__float__"):
                theta = math.radians(args[0])
                c_ = round(math.cos(theta), 8)
                s_ = round(math.sin(theta), 8)
                self.a = self.d = c_