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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hello Tijmen,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I do not know if you question is still relevant but I will give one suggestion how you can find the end points of your streamlines. The output of vtkStreamTracer is a vtkPolyDataSet which contains the streamlines as multiple line cells. You can iterate over each line to retrieve the vertices of that line. These vertices are ordered beginning with the first vertex in that line. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>However, you must be careful! If you propagate in both directions within the vtkStreamTracer you have up to two lines for a "whole" streamline. One for the forward and one for the backward propagation. These two line segments are not connected! I wrote a function which starts with the first vertex of the current line. I checked this vertex for two cases. First case: this vertex is the start point of a streamline with only one segment, that means only forward or backward propagation was done. Second case: like the first case but with another vertex at the same position but it is the start point of the second line segment. I checked this by searching in the neighborhood of that vertex, with radius 0.0, if another vertex is there. For this searching I used vtkPointLocator. I connect the two line segments later in the right order and discard one of the two vertices. Below I give you the C++ code for that function. I hope that the comments are sufficient. If not do not hesitate to ask me.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Best regards, Rocco<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:blue'>void</span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>UMDStreamlineStyleMapper</span>::<span style='color:#020002'>sortFlowVertices</span>()<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>{<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>BuildCells</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>BuildLinks</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkPolyData</span>> <span style='color:#020002'>sortedStreamlineData</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkPolyData</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkPoints</span>> <span style='color:#020002'>sortedStreamlinePoints</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkPoints</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkCellArray</span>> <span style='color:#020002'>sortedStreamlines</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkCellArray</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkDoubleArray</span>> <span style='color:#020002'>streamlineScalars</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkDoubleArray</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkPointLocator</span>> <span style='color:#020002'>pointLocator</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkPointLocator</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>pointLocator</span>-><span style='color:#020002'>SetDataSet</span>(<span style='color:#020002'>inputStreamlineData</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>pointLocator</span>-><span style='color:#020002'>BuildLocator</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>> <span style='color:#020002'>composedLinePointIDs</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>> <span style='color:#020002'>rearrangedLinePointIDs</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>>::<span style='color:#020002'>New</span>(); <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>> <span style='color:#020002'>identicalSeedPointIdsList</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>> <span style='color:#020002'>currentLinePointIds</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>> <span style='color:#020002'>incidentStreamlineIdsList</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>> <span style='color:#020002'>processedSeedpointIds</span> = <span style='color:#020002'>vtkSmartPointer</span><<span style='color:#020002'>vtkIdList</span>>::<span style='color:#020002'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>progressBar</span>-><span style='color:#020002'>setFloatValue</span>(0.0);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>bool</span> <span style='color:#020002'>hasScalars</span> = <span style='color:blue'>false</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>float</span> <span style='color:#020002'>maxLength</span> = 0.0;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>newPointId</span> = -1;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>numProcessedStreamLines</span> = -1;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>if</span> (<span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPointData</span>()-><span style='color:#020002'>GetScalars</span>())<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>streamlineScalars</span>-><span style='color:#020002'>SetName</span>(<span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPointData</span>()-><span style='color:#020002'>GetScalars</span>()-><span style='color:#020002'>GetName</span>());<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>hasScalars</span> = <span style='color:blue'>true</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> } <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkCellArray</span> *<span style='color:#020002'>unprocessedStreamlines</span> = <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetLines</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>if</span> (<span style='color:#020002'>unprocessedStreamlines</span> == <span style='color:#020002'>NULL</span>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>cerr</span> << <span style='color:#A31515'>"No streamlines available ==> no sorting is performed!"</span> << <span style='color:#020002'>endl</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> } <span style='color:blue'>else<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>unprocessedStreamlines</span>-><span style='color:#020002'>InitTraversal</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkIdType</span> <span style='color:#020002'>npts</span>, *<span style='color:#020002'>pts</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>while</span>(<span style='color:#020002'>unprocessedStreamlines</span>-><span style='color:#020002'>GetNextCell</span>(<span style='color:#020002'>npts</span>, <span style='color:#020002'>pts</span>) && <span style='color:#020002'>npts</span> > 0)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>identicalSeedPointIdsList</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>incidentStreamlineIdsList</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>rearrangedLinePointIDs</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>composedLinePointIDs</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>numProcessedStreamLines</span>++;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// The first point of a streamline corresponds to its seed point. We store its id to skip processing a second streamline <o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// propagation because we already have processed this line (see below)<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>id</span> = <span style='color:#020002'>pts</span>[0];<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>if</span> (<span style='color:#020002'>processedSeedpointIds</span>-><span style='color:#020002'>IsId</span>(<span style='color:#020002'>id</span>) != -1)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Continue with the next streamline starting from a new seed point<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>continue</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// An unprocessed seed point is found. Test if this point exists twice at the same position. <o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// The second point is used as seed point for another streamline (forward or backward propagation). <o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>processedSeedpointIds</span>-><span style='color:#020002'>InsertNextId</span>(<span style='color:#020002'>id</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Get the position of the current seed point<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>double</span> <span style='color:#020002'>seedPoint</span>[3];<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPoint</span>(<span style='color:#020002'>id</span>, <span style='color:#020002'>seedPoint</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>pointLocator</span>-><span style='color:#020002'>FindPointsWithinRadius</span>(0.0, <span style='color:#020002'>seedPoint</span>, <span style='color:#020002'>identicalSeedPointIdsList</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>numIdenticalSeedPoints</span> = <span style='color:#020002'>identicalSeedPointIdsList</span>-><span style='color:#020002'>GetNumberOfIds</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>secondId</span> = 0;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>firstId</span> = 0;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>switch</span> (<span style='color:#020002'>numIdenticalSeedPoints</span>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span> 1:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Get all the point ids of the single streamline (in "identicalSeedPointIdsList" and "incidentStreamlineIdsList"<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// are only one entry).<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>firstId</span> = <span style='color:#020002'>identicalSeedPointIdsList</span>-><span style='color:#020002'>GetId</span>(0);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPointCells</span>(<span style='color:#020002'>firstId</span>, <span style='color:#020002'>incidentStreamlineIdsList</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetCellPoints</span>(<span style='color:#020002'>incidentStreamlineIdsList</span>-><span style='color:#020002'>GetId</span>(0), <span style='color:#020002'>currentLinePointIds</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Reverse streamline vertex ids because they start from the seed point.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>for</span> (<span style='color:blue'>int</span> <span style='color:#020002'>pointId</span> = 0; <span style='color:#020002'>pointId</span> < <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetNumberOfIds</span>(); <span style='color:#020002'>pointId</span>++)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Reverse the ids because they start at the seed point.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>currentPointId</span> = <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetId</span>(<span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetNumberOfIds</span>()-<span style='color:#020002'>pointId</span>-1);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>rearrangedLinePointIDs</span>-><span style='color:#020002'>InsertNextId</span>(<span style='color:#020002'>currentPointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>break</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span> 2:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Get all the point ids of the first streamline (in "identicalSeedPointIdsList" are two entries<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// and in "incidentStreamlineIdsList" is still one entry).<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPointCells</span>(<span style='color:#020002'>identicalSeedPointIdsList</span>-><span style='color:#020002'>GetId</span>(0), <span style='color:#020002'>incidentStreamlineIdsList</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetCellPoints</span>(<span style='color:#020002'>incidentStreamlineIdsList</span>-><span style='color:#020002'>GetId</span>(0), <span style='color:#020002'>currentLinePointIds</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Reverse streamline vertex ids because they start from the seed point.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>for</span> (<span style='color:blue'>int</span> <span style='color:#020002'>pointId</span> = 0; <span style='color:#020002'>pointId</span> < <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetNumberOfIds</span>(); <span style='color:#020002'>pointId</span>++)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Reverse the ids because they start at the seed point.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>currentPointId</span> = <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetId</span>(<span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetNumberOfIds</span>()-<span style='color:#020002'>pointId</span>-1);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>rearrangedLinePointIDs</span>-><span style='color:#020002'>InsertNextId</span>(<span style='color:#020002'>currentPointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Get all the point ids of the second streamline<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>incidentStreamlineIdsList</span>-><span style='color:#020002'>Reset</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPointCells</span>(<span style='color:#020002'>identicalSeedPointIdsList</span>-><span style='color:#020002'>GetId</span>(1), <span style='color:#020002'>incidentStreamlineIdsList</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>secondId</span> = <span style='color:#020002'>incidentStreamlineIdsList</span>-><span style='color:#020002'>GetId</span>(0);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetCellPoints</span>(<span style='color:#020002'>incidentStreamlineIdsList</span>-><span style='color:#020002'>GetId</span>(0), <span style='color:#020002'>currentLinePointIds</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// We do not reverse the vertex order because we continue the streamline direction further.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// We also skip the first point of the second streamline because this point is already inserted<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// in the rearranged list.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>for</span> (<span style='color:blue'>int</span> <span style='color:#020002'>pointId</span> = 1; <span style='color:#020002'>pointId</span> < <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetNumberOfIds</span>(); <span style='color:#020002'>pointId</span>++)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// Reverse the ids because they start at the seed point.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>currentPointId</span> = <span style='color:#020002'>currentLinePointIds</span>-><span style='color:#020002'>GetId</span>(<span style='color:#020002'>pointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>rearrangedLinePointIDs</span>-><span style='color:#020002'>InsertNextId</span>(<span style='color:#020002'>currentPointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> } <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>break</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>default</span>:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>cerr</span> << <span style='color:#A31515'>"UMDStreamlineStyleMapper::sortFlowVertices()==> Invalid number of streamlines at current seed point!"</span> << <span style='color:#020002'>endl</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>break</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>float</span> <span style='color:#020002'>currentLength</span> = 0.0; <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>for</span> (<span style='color:blue'>int</span> <span style='color:#020002'>pointId</span> = 0; <span style='color:#020002'>pointId</span> < <span style='color:#020002'>rearrangedLinePointIDs</span>-><span style='color:#020002'>GetNumberOfIds</span>(); <span style='color:#020002'>pointId</span>++)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>newPointId</span>++; <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>int</span> <span style='color:#020002'>currentPointId</span> = <span style='color:#020002'>rearrangedLinePointIDs</span>-><span style='color:#020002'>GetId</span>(<span style='color:#020002'>pointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>if</span> (<span style='color:#020002'>hasScalars</span>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>double</span> <span style='color:#020002'>scalarValue</span> = <span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPointData</span>()-><span style='color:#020002'>GetScalars</span>()-><span style='color:#020002'>GetTuple1</span>(<span style='color:#020002'>currentPointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>streamlineScalars</span>-><span style='color:#020002'>InsertNextTuple1</span>(<span style='color:#020002'>scalarValue</span>); <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>composedLinePointIDs</span>-><span style='color:#020002'>InsertNextId</span>(<span style='color:#020002'>newPointId</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlinePoints</span>-><span style='color:#020002'>InsertNextPoint</span>(<span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetPoint</span>(<span style='color:#020002'>currentPointId</span>));<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>if</span> (<span style='color:#020002'>newPointId</span> > 0)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>double</span> <span style='color:#020002'>p0</span>[3];<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>double</span> <span style='color:#020002'>p1</span>[3]; <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlinePoints</span>-><span style='color:#020002'>GetPoint</span>(<span style='color:#020002'>newPointId</span>-1, <span style='color:#020002'>p0</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlinePoints</span>-><span style='color:#020002'>GetPoint</span>(<span style='color:#020002'>newPointId</span>, <span style='color:#020002'>p1</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>currentLength</span> += <span style='color:#020002'>sqrt</span>(<span style='color:#020002'>vtkMath</span>::<span style='color:#020002'>Distance2BetweenPoints</span>(<span style='color:#020002'>p0</span>, <span style='color:#020002'>p1</span>));<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> } <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> } <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlines</span>-><span style='color:#020002'>InsertNextCell</span>(<span style='color:#020002'>composedLinePointIDs</span>-><span style='color:#020002'>GetNumberOfIds</span>(), <span style='color:#020002'>composedLinePointIDs</span>-><span style='color:#020002'>GetPointer</span>(0));<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:blue'>if</span> (<span style='color:#020002'>currentLength</span> > <span style='color:#020002'>maxLength</span>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>maxLength</span> = <span style='color:#020002'>currentLength</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>setMaximumStreamlineLength</span>(<span style='color:#020002'>maxLength</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// The first half of the progress state consists of sorting the flow vertices.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>// The second half will be done during the generating of the edge mesh data structure.<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>progressBar</span>-><span style='color:#020002'>setFloatValue</span>((<span style='color:blue'>float</span>)<span style='color:#020002'>numProcessedStreamLines</span>/<span style='color:#020002'>inputStreamlineData</span>-><span style='color:#020002'>GetNumberOfLines</span>()); <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> } <span style='color:green'>// end while-loop<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:green'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>cout</span> << <span style='color:#A31515'>"sortedPoints->GetNumberOfPoints(): "</span> << <span style='color:#020002'>sortedStreamlinePoints</span>-><span style='color:#020002'>GetNumberOfPoints</span>() << <span style='color:#020002'>endl</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>//cout << "unsortedPolyLines->GetNumberOfPoints(): " << unsortedPolyLines->GetNumberOfPoints() << endl;<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>//cout << "polyLines->GetNumberOfCells(): " << polyLines->GetNumberOfCells() << endl;<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:green'>//cout << "maxLength: " << maxLength << endl;<o:p></o:p></span></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:green'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlineData</span>-><span style='color:#020002'>SetPoints</span>(<span style='color:#020002'>sortedStreamlinePoints</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlineData</span>-><span style='color:#020002'>SetLines</span>(<span style='color:#020002'>sortedStreamlines</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlineData</span>-><span style='color:#020002'>GetPointData</span>()-><span style='color:#020002'>SetScalars</span>(<span style='color:#020002'>streamlineScalars</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>sortedStreamlineData</span>-><span style='color:#020002'>Update</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>inputStreamlineData</span> = <span style='color:#020002'>sortedStreamlineData</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> <span style='color:#020002'>vtkOutputSortedStreamlines</span>.<span style='color:#020002'>setNewOutputBaseFieldObject</span>(<span style='color:#020002'>sortedStreamlineData</span>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> </span><span style='font-size:10.0pt;font-family:"Courier New"'>} <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>}</span><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>Im Auftrag von </b>Tijmen Klein<br><b>Gesendet:</b> Dienstag, 27. September 2011 15:10<br><b>An:</b> vtkusers@vtk.org<br><b>Betreff:</b> Re: [vtkusers] End locations of vtkStreamTracer<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>A little update on my own question. I am now able to find the end location of a streamline, as long as I use 1 input point (setStartPosition() instead of setSource() ). I can find the end point using this trick:<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>double* stopPosition;<o:p></o:p></p></div><div><p class=MsoNormal>long numPoints = streamer->GetOutput()->GetNumberOfPoints();<o:p></o:p></p></div><div><p class=MsoNormal>stopPosition = streamer->GetOutput()->GetPoint(numPoints-1);<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I can then use this stopPosition for the setStartPosition() method. Unfortunately, this does not work with multiple inputs. Is there anyone who could help me on that? Ofcouse, I could create an array of vtkStreamTracers, each one only tracing a single input point. This should work, but feels really ugly.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Cheers,<o:p></o:p></p></div><div><p class=MsoNormal>Tijmen<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Wed, Sep 21, 2011 at 4:47 PM, Tijmen Klein <<a href="mailto:T.R.Klein@student.rug.nl">T.R.Klein@student.rug.nl</a>> wrote:<o:p></o:p></p><p class=MsoNormal>Hi everyone,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I'm trying to get the end locations of the seeds inserted into a vtkStreamTracer. I insert some particles using a vtkDataSet, and I want to know the locations of where these particles ended up. How is this possible with a vtkStreamTracer?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Some context: I'm working with time dependent data, and I want to use the end locations as the new seed locations for the next timestep. I only want to visualize the path (using streamtubes) of the current timestep.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Cheers,<o:p></o:p></p></div><div><p class=MsoNormal>Tijmen<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>