Method rotate

pyrender.py:306–389

(self, axis, degree)

    def rotate(self, axis, degree):
        for index in range(len(self.v)):
            self.v[index][0] -= self.center[0]
            self.v[index][1] -= self.center[1]
            self.v[index][2] -= self.center[2]

        theta = -degree * pi / 180
        if axis in (0, "x"):
            rotation = (
                (1, 0, 0,),
                (0, cos(theta), -sin(theta),),
                (0, sin(theta), cos(theta),),
            )
            self.x_r += degree
            self.rotation = (
                (self.rotation[0][0], self.rotation[0][1] * rotation[1][1] + self.rotation[0][2] * rotation[1][2], self.rotation[0][1] * rotation[2][1] + self.rotation[0][2] * rotation[2][2],),
                (self.rotation[1][0], self.rotation[1][1] * rotation[1][1] + self.rotation[1][2] * rotation[1][2], self.rotation[1][1] * rotation[2][1] + self.rotation[1][2] * rotation[2][2],),
                (self.rotation[2][0], self.rotation[2][1] * rotation[1][1] + self.rotation[2][2] * rotation[1][2], self.rotation[2][1] * rotation[2][1] + self.rotation[2][2] * rotation[2][2],),
            )
            for index, vertex in enumerate(self.v):
                self.v[index] = [
                    vertex[0],
                    vertex[1] * rotation[1][1] + vertex[2] * rotation[1][2],
                    vertex[1] * rotation[2][1] + vertex[2] * rotation[2][2],
                ]
            for index, normal in enumerate(self.vn):
                self.vn[index] = [
                    normal[0],
                    normal[1] * rotation[1][1] + normal[2] * rotation[1][2],
                    normal[1] * rotation[2][1] + normal[2] * rotation[2][2],
                ]    
        elif axis in (1, "y"):
            rotation = (
                (cos(theta), 0, sin(theta),),
                (0, 1, 0,),
                (-sin(theta), 0, cos(theta),),
            )
            self.y_r += degree
            self.rotation = (
                (self.rotation[0][0] * rotation[0][0] + self.rotation[0][2] * rotation[0][2], self.rotation[0][1], self.rotation[0][0] * rotation[2][0] + self.rotation[0][2] * rotation[2][2],),
                (self.rotation[1][0] * rotation[0][0] + self.rotation[1][2] * rotation[0][2], self.rotation[1][1], self.rotation[1][0] * rotation[2][0] + self.rotation[1][2] * rotation[2][2],),
                (self.rotation[2][0] * rotation[0][0] + self.rotation[2][2] * rotation[0][2], self.rotation[2][1], self.rotation[2][0] * rotation[2][0] + self.rotation[2][2] * rotation[2][2],),
            )
            for index, vertex in enumerate(self.v):
                self.v[index] = [
                    vertex[0] * rotation[0][0]  + vertex[2] * rotation[0][2],
                    vertex[1],
                    vertex[0] * rotation[2][0] + vertex[2] * rotation[2][2],
                ]
            for index, normal in enumerate(self.vn):
                self.vn[index] = [
                    normal[0] * rotation[0][0]  + normal[2] * rotation[0][2],
                    normal[1],
                    normal[0] * rotation[2][0] + normal[2] * rotation[2][2],
                ]    
        elif axis in (2, "z"):
            rotation = (
                (cos(theta), -sin(theta), 0,),