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本例從https://github.com/tpaviot/pythonocc-demos搬運而來
執行版本：0.18.1 在其餘版本執行不保證正確
先上結果圖

程式碼部分

from OCC.gp import gp_Pnt, gp_Pnt2d, gp_OX2d
from OCC.Geom2d import Geom2d_Circle
from OCC.Geom2dAdaptor import Geom2dAdaptor_Curve
from OCC.GCPnts import GCPnts_UniformAbscissa

from OCC.Display.SimpleGui import init_display
display, start_display, add_menu, add_function_to_menu = init_display()


def points_from_curve():
    radius = 5.
    abscissa = 3.
    circle = Geom2d_Circle(gp_OX2d(), radius, True)
    gac = Geom2dAdaptor_Curve(circle.GetHandle())
    ua = GCPnts_UniformAbscissa(gac, abscissa)
    a_sequence = []
    if ua.IsDone():
        n = ua.NbPoints()
        for count in range(1, n + 1):
            p = gp_Pnt2d()
            circle.D0(ua.Parameter(count), p)
            a_sequence.append(p)
    # convert analytic to bspline
    display.DisplayShape(circle, update=True)
    i = 0
    for p in a_sequence:
        i = i + 1
        pstring = 'P%i : parameter %f' % (i, ua.Parameter(i))
        pnt = gp_Pnt(p.X(), p.Y(), 0)
        # display points
        display.DisplayShape(pnt, update=True)
        display.DisplayMessage(pnt, pstring) #這裡是重點

if __name__ == '__main__':
    points_from_curve()
    start_display()