On Fri, Mar 1, 2013 at 1:31 PM, Marc-André Dubois <ma.dub...@me.com> wrote: > Hi everyone, > I would like to draw a sphere in the molecule render area > of avogadro. I simply tried to test this command: > > gl->painter()->drawSphere(center,13.0); > > where gl is my GLWidget, but I received: GLPainter not active. Is there > something I don't understand? Thanks guys, > You must make these calls when the GL context is valid. The easiest way is to write an Engine and do it in one of the virtual render calls in the method. See the Van der Waals plugin for example. This ensures the render call happens at the appropriate moment when the GL context is current.
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