Sorry to bother folks with this one, I know I came across a proposed fix for this a while back, but endless Google searches and searches here and at cgtalk have failed to re-locate it.
When dealing with meshes in shaded mode, the faces seem to “swim,” that is they get a wavy sort of jagged appearance near the edges, almost as if the face was a loose piece of paper flapping off of the edges. This does not happen at the edges beween coplanar faces, only the edges between faces where there is an angle. It happens with primitves I’ve tweaked (such as taking a cube and moving one edge to put the face on an angle), with extrusions, and even, lately, with primitives that have only been changed by scaling along an axis.
I have noticed that using a lot of extrusions with scaling seems to make the issue worse, and on a few models the fix was to delete the “wavy” face and then re-form it by selecting the four vertices and hitting “f.” It also seems to be caused in some cases by edges that are coplanar but not coextensive (caused by use of f-gons and by extrusions scaled flat along the normal AFAICT). Deleting the edges and then re-forming the faces works…sometimes.
If this only occurred when dealing with oddball extrusions, I could understand the issue as one likely pertaining to f-gons. But the fact that it seems to happen with simple six-sided cube shapes that have been merely, say, scaled along x or y, has me confused.
Can anyone point me to a work-around for this issue?
Thanks for your help, in advance.