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removeisolatedsurf.m
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removeisolatedsurf.m
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function fnew=removeisolatedsurf(v,f,maxdiameter)
%
% fnew=removeisolatedsurf(v,f,maxdiameter)
%
% remove disjointed surface fragment filtered by using mesh diameter
%
% author: Qianqian Fang, <q.fang at neu.edu>
%
% input:
% v: list of nodes of the input surface
% f: list of triangles of the input surface
% maxdiameter: maximum bounding box size for surface removal
%
% ouput:
% fnew: new face list after removing the components smaller than
% maxdiameter
%
% -- this function is part of iso2mesh toolbox (http://iso2mesh.sf.net)
%
fc=finddisconnsurf(f);
for i=1:length(fc)
xdia=v(fc{i},1);
xdia=max(xdia(:))-min(xdia(:));
if(xdia<=maxdiameter) fc{i}=[]; continue; end
ydia=v(fc{i},2);
ydia=max(ydia(:))-min(ydia(:));
if(ydia<=maxdiameter) fc{i}=[]; continue; end
zdia=v(fc{i},3);
zdia=max(zdia(:))-min(zdia(:));
if(zdia<=maxdiameter) fc{i}=[]; continue; end
end
fnew=[];
for i=1:length(fc)
if(length(fc{i})) fnew=[fnew;fc{i}]; end
end
if(size(fnew,1)~=size(f,1))
fprintf(1,'removed %d elements of small isolated surfaces',size(f,1)-size(fnew,1));
end