While experimenting with the use of the Gnome canvas for 2D CAD, I have been puzzled over a problem where the gnome canvas becomes unresponsive, yet the application continues to run and no error messages are issued. The problem seems to occur when I am "picking" the second of 2 points to create a line segment. Actually, the points are 2 small GnomeCanvasEllipses and the line segment is a GnomeCanvasLine that goes from the center of one ellipse to the center of the other. If my cursor is "in the way of" the GnomeCanvasLine being created as I make the second pick, the canvas hangs. Am I doing something wrong in my code?
I have read that some code in libart is numerically unstable and can cause strange behaviour.
I have read that gnome canvas uses libart.
Your problem description sounds like a symptom of numerical instability.
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