[Octave-bug-tracker] [bug #54970] Use of camlight when a patch is not visible

[Guillaume]

URL:
  <https://savannah.gnu.org/bugs/?54970>

                 Summary: Use of camlight when a patch is not visible
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Tue 06 Nov 2018 04:11:34 PM UTC
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

If camlight is called while a patch is not visible, it does not seem to be
effective when the patch is set to visible. To see this effect, run the
following twice, setting the "visible" property of the patch "on" or "off".


H = figure;
A = axes("Parent",H);

vertices = [0, 0, 0;
            1, 0, 0;
            1, 1, 0;
            0, 1, 0;
            0.5, 0.5, 1];
faces = [1, 2, 5;
         2, 3, 5;
         3, 4, 5;
         4, 1, 5];
P = patch  ("Vertices", vertices, "Faces", faces, ...
        "FaceVertexCData", jet (5), "FaceColor", "interp", ...
        "Parent", A, "Visible", "off"); # change here to "on"
    
L = camlight(A, "headlight"); 
set(P,"Visible","on");





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