| Author | Message | ||
     Drew Keppel (dgkeppel) New member Username: dgkeppel Post Number: 1 Registered: 01-2004 |
I was wondering if the new version of flex could handle vertical surfaces. In my problem, I need a rectangular mesa without having the surface of the mesa extend out past the edges of the region of the mesa. Is this possible? | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 99 Registered: 06-2003 |
Version 4 still requires that it be possible to compute Z=f(x,y) to find the extrusion surface. This means that you cannot define a vertical extrusion surface. Version 4 can handle surfaces such as spheres and cylinders, which approach verticality in a limit, but are still computable everywhere inside the bounding curves. Version 4 allows you to define "regions" that exist only on a single layer and/or surface, which considerably improves the ability to handle multi-layered constructs. Can it be that this facility would remove your constraint that the layer not extend beyond the mesa? But your question raises the issue of just how nearly vertical an extrusion surface can be. That is, can a rectangular object be approximated as a truncated pyramid of very steep sides? This is something we have not yet investigated. Clearly the feature or region boundaries delineating the slope breaks would have to be supressed in all layers (existing only on the surface itself), or extremely thin slivers would be created. Can you explain more precisely why the layer cannot extend beyond the mesa? | ||
| Drew Keppel (dgkeppel) New member Username: dgkeppel Post Number: 2 Registered: 01-2004 |
I have other surfaces that need to extend down past the top of the mesa (the mesa surface) so they are closer to the surface beneath the layer of the mesa. Basically I have a large plate with a mesa on it. I want an upper surface to come down close to the top of the mesa at a set height and then scan across the mesa and down to the plate once it reaches the edge of the mesa. This simulation is for modeling an atomic force microscope tip near the surface of a sample with a mesa. |