Re: Java3D shapes to visad shapes? - solved

• To: visad@xxxxxxxxxxxxxxxx
• Subject: Re: Java3D shapes to visad shapes? - solved
• From: Stephen C Harris <sharris@xxxxxxxxxxxx>
• Date: Tue, 8 Mar 2005 15:41:01 -0600

[Bill]
> did you also copy the colors (if they are non-null)
> and especially the stripVertexCounts?

That did it Bill, I hadn't been setting the individual strip vertex counts.

So for reference, here's how to create Spheres as VisAD shapes from Sun's built 
in ones (other shapes should be similar):

  /*
             import com.sun.j3d.utils.geometry.Sphere;
             import javax.media.j3d.Appearance;
             import javax.media.j3d.TriangleStripArray;
             */
            
            VisADTriangleStripArray sphere_visad = new 
VisADTriangleStripArray();
             
            Sphere sphere_j3d = new Sphere(0.1f, new Appearance());
            TriangleStripArray geom_j3d = 
(TriangleStripArray)sphere_j3d.getShape().getGeometry();

            sphere_visad.vertexCount = geom_j3d.getVertexCount();

            sphere_visad.coordinates = new float[3 * geom_j3d.getVertexCount()];
            geom_j3d.getCoordinates(0, sphere_visad.coordinates);

            sphere_visad.normals = new float[3 * geom_j3d.getVertexCount()];
            geom_j3d.getNormals(0, sphere_visad.normals);

            sphere_visad.vertexFormat = geom_j3d.getVertexFormat();

            sphere_visad.stripVertexCounts = new int[geom_j3d.getNumStrips()];
            geom_j3d.getStripVertexCounts(sphere_visad.stripVertexCounts);

    // Now use sphere_visad like any other VisAD shape, e.g. in 
ShapeControl.setShape()

Thanks for the help
Steve Harris
Programmer
National Center for Toxicological Research, FDA

• References:
  • Re: Java3D shapes to visad shapes?
    • From: Bill Hibbard