<meta http-equiv="content-type" content="text/html; charset=utf-8"><div class="gmail_quote">On Thu, Oct 28, 2010 at 3:35 PM, Nico Schlömer <span dir="ltr"><<a href="mailto:nico.schloemer@gmail.com">nico.schloemer@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi,<br>
<br>
I'm importing VTK files with unstructured grids into and I noticed one<br>
particular oddity about it: there is GetCell() and GetPoint() on vtk<br>
meshes, but no such thing as GetEdge(). As a matter of fact, it'd be<br>
terribly useful to have a notion of an edge as well. Right now I get<br>
edges on a cell level which works alright, but duplicates the<br>
information as each edge belongs to two cells (2D mesh).<br>
<br>
Anyone with more insight here?<br>
<br>
Cheers,<br>
Nic</blockquote><div><br></div><div>The IsEdge function (in vtkPolyData) will tell you if there is an edge between two points:</div><div><a href="http://www.vtk.org/doc/nightly/html/classvtkPolyData.html#ab53e657c8db698aa88109ada1762dff8">http://www.vtk.org/doc/nightly/html/classvtkPolyData.html#ab53e657c8db698aa88109ada1762dff8</a></div>
<div><br></div><div>Is this what you are looking for? Or do you somehow want to get an "edge" object? It doesn't seem to exist for an vtkUnstructuredGrid. It shouldn't be too hard to add using the logic from the function in vtkPolyData or something like the <span class="Apple-style-span" style="font-family: monospace; font-size: 12.5px; white-space: pre; ">GetConnectedVertices function here:</span></div>
<div><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/VertexConnectivity">http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/VertexConnectivity</a> </div></div><div class="gmail_quote"><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/VertexConnectivity"></a><br>
<div>David</div></div>