..just in case someone’s interested in it.

http://code.google.com/p/toxiclibs/source/browse/trunk/toxiclibs/src.sim/toxi/sim/dla/DLA.java#220

Incidentally, this is the same format used by Sunflow for its “particles” primitive, but it’d be trivial to export this as anything else, e.g. like this:

// save particles as text file, 1 per line
void savePoints(DLA dla, String filePath) {
  try {
    FileOutputStream fs = new FileOutputStream(filePath);
    PrintWriter printer = new PrintWriter(fs);
    for(Iterator i=dla.getParticles().iterator(); i.hasNext();) {
      Vec3D p=(Vec3D)i.next();
      printer.println(p.x+","+p.y+","+p.z);
    }
  } catch (Exception e) {
    e.printStackTrace();
  }
}

Are there any standard file formats for point clouds I should know about/support? What are you guys using at Pixar for such things, i.e. how does Renderman handle point clouds (directly)?

It’s a true honour to have you as a reader, would love to see what you come up with! :)

Thanks for this. Super helpful. One question though: what file format are you using for your point cloud output? Is it sunflow specific? I’d like to use the data elsewhere.

thanks,

colin

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