CompuServe Thread

Have you looked at the following? This particular script requires TSE, but all the info is there…. [74664,2144] Martin Doudoroff/KUB Lib:18 SELECT.ZIP Bin, Bytes: 3467, Count: 187, 17-Mar-95 Title : Select Faces by Normal (Script'd utility) Keywords: TSE SCRIPT PXP SELECT FACES NORMAL UTILITY 3DE Fantastic script for The Script Extension PXP. This utility selects faces on multiple objects according to the direction of their normals–something you cannot do any other way. Say you want all the faces which are oriented vertically? SELECT.P3D does it in a flash. Fully documented code with a nifty user interface. Check it out. (Requires TSE.) (DL time at 2400 baud: under 1:00)

>> What is the formula for calculating the normal for a 3D face? Or; is there a way to select faces based on the direction of their normals? If not I hope to make a script to do just that. << Well, you can download my code chunk that calculates face normals with TSE (it's in section 18), or you can download the script that selects faces based on the direction of normals (see the previous reply). – Dan / n-Space, Inc.