How to get the GU_SDF from input node?

[zzangxx]

Hello,

I am trying to get the SDF (signed distance field) from a collision object.

I found the class GU_SDF and GU_SDFParms. These classes are related to the isooffset node.

However, I cannot find the way to set up(GU_SDFParms) and compute the SDF from an input node (for example sphere node).

Thanks in advance and I am looking forward to your response.

collision = inputGeo(2, context);		
if (collision)
{
   myCollision_SDF = new GU_SDF
   myCollision_SDF->build(collision, SDF_parms);
}

When I do like this, SDF_parms don't have current prameters data.

Edited March 16, 2011 by zzangxx