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Ep's tool-dev diary



A vertex occlusion baking guide

Posted by eppo, 26 November 2014 · 117 views

'allo

Finally got around to add an ambient occlusion baker to the pipeline.

I'm baking it all to vertex maps, as these give generally good results and avoid the hassle and memory demands of having to assign unique texture space to every triangle in a mesh. Meaning I could no longer use the render-to-texture-only routines provided by Modo. Also, lots of...


More of the bool-tool

Posted by eppo, 13 October 2014 · 214 views

Been trying to build larger scenes using the CSG method.

As base building blocks I use a series of SubD shapes as they avoid making everything look too angular. The older mesher used to make a mess of curved surfaces, but this version handles them well. These basic chunks have all their uvs, splat maps and density maps for foliage replication already app...


The Feature-fracturing algorithm

Posted by eppo, 23 September 2014 · 171 views

Time for yet another rewrite of my CSG tool. Yup.

Instead of going down the iso-surfacing road like earlier attempts, I now take a more boolean-like approach. This in the sense that I no longer convert the input geometry into an intermediate distance field, but keep it in its original b-rep form throughout the merging process. The advantage being that it...


Multi-texturing + Yoshi's Island

Posted by eppo, 05 July 2014 · 455 views

hallo,


Modo's 'shader tree':


http://www.dynamique.nl/grow/pst/ModoMaterial.png


It's a peculiar thing at first: instead of creating explicit materials, you add shading components (textures etc.) to a single hierarchy. Polygons are then assigned tags which correspond to masking-groups (a sort of polygon-'gateway') located in the tree. During shading...


Mesher ~ another iteration

Posted by eppo, 22 April 2014 · 630 views
isosurfaces, contouring, FEM
Felt my meshing tool needed another rewrite; getting trickier though.

The idea behind the tool is to construct a mesh using smaller simpler building blocks; kind of like a purely additive CSG modeller. I started out with a Marching Cubes implementation, but I really wanted it to be able to capture sharp edges in the base geometry. Also the triangle quali...





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