Subdivision and "Set Edges/Vertex Crease Value"
written by olivier amrein
website: skol - effects visuels
modified by: Ed Harriss


Remarks:
Be sure you are in the "model" module (press 1)
This tutorial works in SOFTIMAGE|XSI 1.5 and above only


start with a polymesh cube: Get->Primitive->Polygon Mesh->Cube
set these values : u:3 v:3 base:1

if you don't have something that looks like this,
then something went wrong. =)


get property->geometry approximation
change mesh subdivision level to 2


select the polygon in the middle with the U-key


move this polygon in front so it looks like the following pic:

using the Select->Select Adjacent->Edges 4 edges will be selected,


we are now going to make the "hard" in terms of subdivision:
Modify ->Component -> Make Hard Edges/Vertex

as you can see you really have hard edges now ! Softimage never lies :-))

you can test it with vertices also:


now go to the back of the deformed cube and selet the 3 edges as sown in the figure:


and instead of Marking the component as Hard or not you can set a value for this.
Modify->Component-> Set Edge/Vertex Crease Value

This is what you can get if you set the EdgeCrease Value high enough:

See it move in real time? It looks almost as if this was sort of a Magnet Value !


no 2000 - by olivier amrein
website: skol - effects visuels
modified by: Ed Harriss