周长画圆，周长,[Python]代码im

周长画圆，周长,[Python]代码im

[Python]代码

import rhinoscriptsyntax as rsimport mathdef CreateCircle(circumference=None):    center = rs.GetPoint("Center point of circle")    if center:        plane = rs.MovePlane(rs.ViewCPlane(), center)        length = circumference        if length is None: length = rs.GetReal("Circle circumference")        if length and length>0:            radius = length/(2*math.pi)            objectId = rs.AddCircle(plane, radius)            rs.SelectObject(objectId)            return length    return Noneif __name__ == '__main__':    CreateCircle()