示例#1
0
def PiScale(*args):
    if len(args) > 0 and type(args[0]) == list:
        vec = args[0]
        x = float(vec[0])
        y = float(vec[1])
        z = float(vec[2])
    elif len(args) > 0 and args[0].__class__.__name__ == "PtVector":
        vec = args[0]
        x = vec.x
        y = vec.y
        z = vec.z
    elif len(args) == 0:
        x = 1.
        y = 1.
        z = 1.
    else:
        raise PtCommon.PtTypeError("PiScale requires a list or a PtVector")

    m = PtMatrix([x, 0., 0., 0., 0., y, 0., 0., 0., 0., z, 0., 0., 0., 0., 1.])
    #mi = PtMatrix([1./x,0.,0.,0.,
    #              0.,1./y,0.,0.,
    #              0.,0.,1./z,0.,
    #              0.,0.,0.,1.])
    #t = PtTransform()
    #t.m = m
    #t.mInv =mi
    return m
示例#2
0
def PiTranslate(*args):
    if len(args) > 0 and type(args[0]) == list:
        vec = args[0]
        x = float(vec[0])
        y = float(vec[1])
        z = float(vec[2])
    elif len(args) and args[0].__class__.__name__ in ["PtVector", 'PtPoint']:
        vec = args[0]
        x = vec.x
        y = vec.y
        z = vec.z
    elif len(args) == 0:
        x = 0.
        y = 0.
        z = 0.
    else:
        raise PtCommon.PtTypeError("PiTranslate requires a list or a PtVector")

    l = [1., 0., 0., x, 0., 1., 0., y, 0., 0., 1., z, 0., 0., 0., 1.]
    mat = PtMatrix(l)
    return mat