POV-Ray : Resources : Links : 3D Programs : POV-Ray Unofficial Patches and Front End Programs : POV-Ray Patches v3.5
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Density_File Extension Patch
The density_file pattern in POV-Ray 3.5 is extremely flexible. It may be used anywhere any pattern, functions, etc. However, the resolution of the density_file in the official version is only 8 bit and there are only two interpolation options (no interpolation and tri-linear interpolation). These are not enough for some purposes, e.g. for isosurfaces. Thus, I have made an unofficial patch for the density files. Using this patch one can use density files of float values, 16 bit integer values with binary or text format. Furthermore, tri-cubic interpolation options are included.

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