Thursday, 22 January 2009

A week in review

This week I have been working on the model switching in the real time component. It is currently working based on distance from the camera which it evaluates just before drawing, this also provides data for if the object is behind the viewer under which circumstances I dont even attempt to draw it.

A file is automatically generated when the various LOD meshes are computed so that everything can be handled automatically behind the renderer interface. Ultimatly it would be nice to integrate an image metric into the generation stage so that switching distances can be computed automatically instead of relying on user input. It may be a suitable alternative to work it out as a function of triangle reduction against size however I have yet to try this.

On the Alpha Hulls front I have found only a single paper which might provide an insight into implementation of the technique, it is however an algorithm designed to working on 2D raster sets.
Tightening: Curvature-Limiting Morphological Simplification.
Jason Williams and Jarek Rossignac.
Sketch in the ACM Symposium on Solid and Physical Modeling (SPM). pp. 107-112, June 2005.

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