Revision 2ce396a76821d352b608cbcadbb6c57de59620c3 authored by Alec Jacobson on 08 January 2020, 05:26:22 UTC, committed by Alec Jacobson on 08 January 2020, 05:26:22 UTC
1 parent 9d0a7c0
uniformly_sample_edges.m
function [S,SI] = uniformly_sample_edges(V,E,h)
% UNIFORMLY_SAMPLE_EDGES Sample edges of (V,E) with spacing close to h.
%
% Inputs:
% V #V by dim list of vertex locations
% E #E by 2 list of edges indices into V
% h desired distance between samples
% Outputs:
% S #S by dim list of sample locations
% SI #SI list of indices into E
%
S = [];
SI = [];
for e = 1:size(E,1)
n = ceil(sqrt(sum((V(E(e,1),:)-V(E(e,2),:)).^2,2))/h)+1;
s = linspace(0,1,n)';
SI = [SI;e*ones(n,1)];
S = [S; ...
bsxfun(@times,1-s,V(E(e,1),:))+bsxfun(@times, s,V(E(e,2),:))];
end
[S,I] = unique(S,'rows');
SI = SI(I,:);
end
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