pythonOCC例子搬运：2.在点上标注文字

╰+攻爆jí腚メ 2022-04-10 11:29 243阅读 0赞

这里返回总目录>>[**返回总目录**][Link 1]  
本例从https://github.com/tpaviot/pythonocc-demos搬运而来  
运行版本：**0.18.1** 在其余版本运行不保证正确  
**先上结果图**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70]  
**代码部分**

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) #这里是重点
    
    if __name__ == '__main__':
        points_from_curve()
        start_display()

[Link 1]: https://blog.csdn.net/weixin_42755384/article/details/85772835
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70]: /images/20220331/8fd1381c55de46b9b29d1c70cf846859.png