I suddenly noticed that in arcscene when I am looking through a semi-transparent feature, I also look through other features lying behind that semi-transparent feature.
The situation is as follows: In my document I am looking at a elevated polygon. behind it are a number of elevated 3d points. I cannot see them as there is a polygon in the way. I have made another polygon layer visible, this time with a transparancy set in its display tab. now I am looking at the semi-transparent polygon, behind it is the other polygon, and behind that second polygon are the 3D points. Looking through the semi-transparent polygon you would expect to see what lies behind it but, alas, I also suddenly look through the other (not transparent at all) polygon and see the objects which lie behind.
In the attached image the left is the situation without the semi-transparent polygon, the right includes this one and shows the points from the background.
Does anyone know what I'm doing wrong? I did change my graphics card recently, but I thought that was an improvement...