Qpainter function on a QFrame problem

[impeteperry]

I am going back and check my data as I am sure that is where it must be as you suggest, but I would like to know about the "{ Q_ASSERT_X(i >= 0 && i < p.size(),...." message. can it help me find where and what is the problem is?.

I looked at QGraphicsView, as you suggested earlier, but for some reason decided not to go there. I will however do so now and try to make a parallel program to the one I have now.

What I am trying to do as a structural engineer is write a parametric driven program to replace the current CAD programs used in the industry and one that someone can learn to use in a day or two by going back to a modified command line operation similar to one I had written in pre-dos days. I do not have any time restraints, but a need to get it right.

I took a quick look at "graphicsview" and noted it was a 2D program and the program i am trying to re-write was a 3D rendered structure
Thanks for you indulgence