Getting geo data from intersections on the road to making cleaner wraps…


So the rabbit trail from over the weekend proved to not be the answer to my original problem as hoped. Namely I was still getting geo movement from far off regions when baking blendshapes to non-similar geo (think a sphere placed on a body).

As such, my next plan to resolve this was to create a specific conforming geo piece to wrap to then wrap my nonconforming object to. To do this, I need a way to  find the geo closest to my geo I wanted to transfer the blendshapes too and so wrote a new function for this that would:

  • Search target geo against a source geo piece to find geo from each target within the source by two methods:
    • boundingBox.contains – by vert
    • rayCasting  – by the compass vectors to make sure it is completely within the sourceObject
  • Translate that data to verts,edges, faces
  • Have a method to expand that data:
    • selection traversing
    • softSelection radius

Lessons learned:

  • bounding box checking is much much faster so use that mode unless you just have to have a more precise idea of what verts are inside the mesh.
  • Not a lot of specific info I could find on some of these concepts and so wanted to share to save someone else time and deadends

Here’s part one of this issue which is housed at cgm.core.lib.geo_Utils.get_contained. There are too many dependencies to include them all but you can get this gist from the code.

Up next is setting up a new wrap setup with this data. Will post when that’s done.

 

Be Sociable, Share!

Comments are closed.