MATLAB: How tomport vertexes and facet from a STL “ASCII” file

asciifacetMATLABstlstl importstl readvertexes

I'm searching for a script witch I can import the vertexes coordinate and the facet form an STL ASCII file. The only one I find for ASCCI and not for binary import only the vertexes and thus It's difficult to draw the surface after it.

Can somebody help ?

Best Answer

Meanwhile I fine here a script that works directly for me:

http://ifit.mccode.org/Downloads/ifit-1.5/Libraries/Loaders/private/read_stl.m

It gives out the vertexes, the faces and the normals.

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 p = patch('faces',F,'vertices',V,'FaceColor',[0.8 0.8 1.0],'FaceLighting','gouraud');

Pass the surface roughness vector as the argument to the 'FaceColor' option.

http://www.mathworks.com/help/matlab/ref/patch.html#busd821-1

MATLAB: Approximate vertex cover problem

Assuming you've got an incidence matrix A with A(u,v) if there is an edge from u to v, then a random edge could be selected with

i = randsample(find(A),1);
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and then delete the edges with

A(u,:) = 0; % edges from u
A(:,u) = 0; % edges to u
A(v,:) = 0;
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This is probably not the most efficient algorithm but if the number of vertices is large then it should run a lot faster if you make A a sparse array.

Best Answer

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