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subtri 1.0

  Date Added: September 09, 2013  |  Visits: 239

subtri

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[Fs,Vs]=subtri(F,V,n)Sub-triangulates the triangles defined by the patch format data F (faces) and V (vertices). Can be used to increase the density of triangulated data or to triangulate the icosahedron to create geodesic sphere triangulations with desired density.Creates n addition points on the edges of the initial triangles, thus it creates (n+1).^2 triangles per original triangle. No double points are introduced. EXAMPLE[X,Y] = meshgrid(linspace(-10,10,15));Z = sinc(sqrt((X/pi).^2+(Y/pi).^2));F = delaunay(X,Y); V=[X(:) Y(:) Z(:)]; C=mean(Z(F),2);n=2;[Fs,Vs]=subtri(F,V,n);Vs(:,3)=sinc(sqrt((Vs(:,1)/pi).^2+(Vs(:,2)/pi).^2)); Z=Vs(:,3);Cs=mean(Z(Fs),2);figure('units','normalized','Position',[0 0 1 1],'Color','w'); colordef('white');subplot(1,2,1);patch('Faces',F,'Vertices',V,'FaceColor','flat','CData',C,'FaceAlpha',0.5,'EdgeColor','k','LineWidth',2); hold on;axis tight; axis square; grid on; hold on; view(3); axis off;title('Original','FontSize',20);subplot(1,2,2);patch('Faces',Fs,'Vertices',Vs,'FaceColor','flat','CData',Cs,'FaceAlpha',0.5,'EdgeColor','k','LineWidth',0.5); hold on;axis tight; axis square; grid on; hold on; view(3); axis off;title(['n=',num2str(n)],'FontSize',20);

Requirements: No special requirements
Platforms: Matlab
Keyword: Creates Delaunayxy Dmeanzf Fsvs Dsubtrifvnvs Dsincsqrtvs Bvs Double Dvs Dmeanzfs Figure Units Normalized Pos Examplexy Introduced Meshgridlinspace N2b12 Offtitle Num Strn Fontsize Onaxis Original Sincsqrtxpi Bypi Square Tight Triangle View
Users rating: 0/10

License: Freeware Size: 10 KB
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