Custom Getpoint

我会带着你远行 2022-06-14 07:39 133阅读 0赞

根据三点画圆弧，绘画中包含了动态显示。  
![这里写图片描述][SouthEast]

# A Rhino GetPoint that performs some custom dynamic drawing
    import Rhino
    import System.Drawing.Color
    import scriptcontext
    
    def CustomArc3Point():
        # Color to use when drawing dynamic lines
        line_color = System.Drawing.Color.FromArgb(255,0,0)
        arc_color = System.Drawing.Color.FromArgb(150,0,50)
    
        rc, pt_start = Rhino.Input.RhinoGet.GetPoint("Start point of arc", False)
        if( rc!=Rhino.Commands.Result.Success ): return
        rc, pt_end = Rhino.Input.RhinoGet.GetPoint("End point of arc", False)
        if( rc!=Rhino.Commands.Result.Success ): return
    
        # This is a function that is called whenever the GetPoint's
        # DynamicDraw event occurs
        def GetPointDynamicDrawFunc( sender, args ):
            #draw a line from the first picked point to the current mouse point
            args.Display.DrawLine(pt_start, args.CurrentPoint, line_color, 2)
            #draw a line from the second picked point to the current mouse point
            args.Display.DrawLine(pt_end, args.CurrentPoint, line_color, 2)
            #draw an arc through these three points
            arc = Rhino.Geometry.Arc(pt_start, args.CurrentPoint, pt_end)
            args.Display.DrawArc(arc, arc_color, 1)
    
        # Create an instance of a GetPoint class and add a delegate
        # for the DynamicDraw event
        gp = Rhino.Input.Custom.GetPoint()
        gp.DynamicDraw += GetPointDynamicDrawFunc
        gp.Get()
        if( gp.CommandResult() == Rhino.Commands.Result.Success ):
            pt = gp.Point()
            arc = Rhino.Geometry.Arc(pt_start,pt,pt_end)
            scriptcontext.doc.Objects.AddArc(arc)
            scriptcontext.doc.Views.Redraw()
    
    
    if( __name__ == "__main__" ):
        CustomArc3Point()

[SouthEast]: /images/20220614/76facdbd15134811b905b132a86d2ee6.png