網模様 ５ : mesh textile 5

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簡単な形状をつくって，空間図形のことを考える．
 
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solid west
facet normal  -1 0  0
outer loop
vertex  0 0 0
vertex  0 1 1
vertex  0 0 1
endloop
endfacet
facet normal  -1 0  0
outer loop
vertex  0 0 0
vertex  0 1 0
vertex  0 1 1
endloop
endfacet
endsolid west

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west, east, south, north, bottom, top も作ってみる．

 以下のようなファイル．

solid west
facet normal  -1 0  0
outer loop
vertex  0 0 0
vertex  0 1 1
vertex  0 0 1
endloop
endfacet
facet normal  -1 0  0
outer loop
vertex  0 0 0
vertex  0 1 0
vertex  0 1 1
endloop
endfacet
endsolid west
solid east
facet normal  1 0  0
outer loop
vertex  1 0 0
vertex  1 1 1
vertex  1 0 1
endloop
endfacet
facet normal  1 0  0
outer loop
vertex  1 0 0
vertex  1 1 0
vertex  1 1 1
endloop
endfacet
endsolid east
solid south
facet normal  0 -1 0
outer loop
vertex  0 0 0
vertex  1 0 0
vertex  1 0 1
endloop
endfacet
facet normal  0 -1 0
outer loop
vertex  0 0 0
vertex  1 0 1
vertex  0 0 1
endloop
endfacet
endsolid south
solid north
facet normal  0 1 0
outer loop
vertex  0 1 0
vertex  1 1 0
vertex  1 1 1
endloop
endfacet
facet normal  0 1 0
outer loop
vertex  0 1 0
vertex  1 1 1
vertex  0 1 1
endloop
endfacet
endsolid north
solid bottom
facet normal  0 0 -1
outer loop
vertex  0 0 0
vertex  1 0 0
vertex  1 1 0
endloop
endfacet
facet normal  0 0 -1
outer loop
vertex  0 0 0
vertex  1 1 0
vertex  0 1 0
endloop
endfacet
endsolid bottom
solid top
facet normal  0 0 1
outer loop
vertex  0 0 1
vertex  1 0 1
vertex  1 1 1
endloop
endfacet
facet normal  0 0 1
outer loop
vertex  0 0 1
vertex  1 1 1
vertex  0 1 1
endloop
endfacet
endsolid top

 
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tetgen に -Yオプション（boundary のエッジを維持）があるので，

tetgen -pYK   ./cube.stl

ちゃんと仕事してる感じ．

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こーいうのを作ってみる．

 でも，

こんなエラー．

心当たり無いなぁ．．．
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