1.2 立方体：Cube

Cube中同样不需要填充任何参数，它本身是创建一个棱长为1的单位立方体。
示例：

from pyp3d import *
class 立方体(Component):
    def __init__(self):
        Component.__init__(self)
        self['长'] = Attr(1000.0, obvious=True)
        self['宽'] = Attr(1000.0, obvious=True)
        self['高'] = Attr(1000, obvious = True)
        self['立方体'] = Attr(None, show=True)
        self['旋转角度'] = Attr(0,obvious = True)
        self['X'] = Attr(0.0, obvious=True)
        self['Y'] = Attr(0.0, obvious=True)
        self['Z'] = Attr(0.0, obvious=True)
        self.replace()
@export
    def replace(self):
        L = self['长']
        W = self['宽']
        H = self['高']
        x = self['X']
        y = self['Y']
        z = self['Z']
        Angle = self['旋转角度']
        TestCube = translate(x,y,z) * rotation(math.pi/180 * Angle) * scale(L,W,H) * Cube()
        self['立方体'] = TestCube
if __name__ == "__main__":
    FinalGeometry =立方体()
    place(FinalGeometry)