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Old 16th March 2005, 12:26 PM   #3
Junior Member
Join Date: Mar 2004
Posts: 22

Hi there, Semar,

Actually, this is happening with a mesh that was built with the "box" tool. No flat or hand-made polys involved at all. I created the box, scaled it then selected one face, extruded twice (to give me the 3 columns).. then did the same with the top and bottom faces. Doing the top and bottom faces is when the problem occured. Could select the left and right faces from the top view, but had to go to the bottom view to select the middle one. Really odd.

The hidden faces resulted from extruding those top and bottom faces. Actually, they're another example of the faces not being selected correctly. I only found out about those hidden faces because I was trying to select the new faces I'd just extruded and instead it "clicked-through" the new faces and was grabbing the faces I'd originally selected to extrude (I hope that makes sense :-).. Again even while in top view.

Perhaps it's some quirk in how AC3D handles extrusions?

Thanks for the feedback/suggestions though...

Originally Posted by semar
Hello wsimike,

I've experienced something like that and I think I've understood the cause.

When you want to select a surface, it should be correctly faced toward you. If happens that you select a surface behind the one you want, I bet it's because you have built that surface with the poly tool - that is, clicking each vertex with the mouse.

If that is the case, you should pay attention on how you design the shape.

If you watch the tutorial about how to build a car, you may notice that the car shape is designed from right to left.

I mean, if you draw a box from left to right - that is, vertex clockwise - you do see a surface later, but it's facing wrong !

Each surface should be drawn anticlockwise, so it will face correctly, and will be also correctly selected from the active view.

For the extruding question, it's the same topic. When you extrude, say from the front view, you'll notice that if you drag the mouse to the right, the extruding block becomes black, while if you drag to the left, that block is drawn in grey. For me, the gray one is the one which 'works' - that is, the surface selection is fine with each ortographic view.

Hope it helps,
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