Hi all, I'm interested in trying out the MultiPassTechnique for for volume rendering and I have a few questions after looking through the source code and the example.
1) In the example, here is the description of the convex hull that can be used by MultipassTechnique: --hull","load 3D hull that defines the extents of the region to volume render. The hull is then read in from a file, if specified. My first question is, what is the expected form of the geometry that one adds to the Tile via addChild? It's not clear to me in the example without seeing an example of a file that contains a hull. 2) There are different shaders and enums for three different scenarios: CUBE, HULL, and CUBE AND HULL. What do each of these scenarios mean? When would each be useful? 3) I'm interested in Multi-pass technique because I'd like to be able to implement a clipping "ROI" defined by an data-axes aligned cube. Would it be possible to define a cube shaped convex hull and have the portion of my data that is inside be rendered and have the portion outside the cube be clipped? Is this within the use cases that were in mind when Multipass Technique was added? I appreciate any help people can give me, I'd really like to get started with MultipassTechnique, looks like a good addition to the library. - Alex
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