<div dir="ltr"><div><div><div>Thanks for the correction David. <br></div>One more question, if Array1 happens to have 3 components (Array1.SetNumberofComponents(3) but Array2 only 1 component) would I still be using AddArray like above?<br>
<br></div>That is on Viewport 1 I want to display a vector and Viewport 2 should be a scalar.<br><br></div><div>Thanks,<br></div>Bhanu<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 25, 2013 at 12:03 PM, David E DeMarle <span dir="ltr"><<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>You want TWO threshold filters, but otherwise yes that is the idea. See edits to the pseudocode below.</div>
<div class="im"><div> <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr"><div>Array1.Setname("array1");<br>myUnstructuredGrid.AddArray(Array1);<br><br>Array2.Setname("array2");<br>myUnstructuredGrid.AddArray(Array2);<br>
<br><br>Thresholdfilter.SetInput(myUnstructuredGrid);<br><br>//Viewport 1<br>==============<br><br>arrayname = "array1";<br><div>Thresholdfilter->SetInputArrayToProcess(0, 0, 0, vtkDataObject::FIELD_ASSOCIATION_CELLS, arrayname );<br>
</div><div>//Set Mapper1 and Actor1 etc.<br>Viewport1 -> Render();<br><br></div></div></div></blockquote><div><br></div></div><div>ThresholdFilter2 = vtkThresholdFilter::New();</div>Thresholdfilter2->SetInput(myUnstructuredGrid);<div class="im">
<br>
<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div><div>//Viewport 2<br>
</div>===========<br>arrayname = "array2";<br></div></div></blockquote><div> </div></div><div>/*</div><div class="im"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr"><div>Thresholdfilter->SetInputArrayToProcess(1, 0, 0, vtkDataObject::FIELD_ASSOCIATION_CELLS, arrayname );</div></div></blockquote></div><div>*/</div><div><br></div><div>Thresholdfilter2->SetInputArrayToProcess(1, 0, 0, vtkDataObject::FIELD_ASSOCIATION_CELLS, arrayname );</div>
<div><div class="h5">
<div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div><div><div>
//Set Mapper2 and Actor2 etc.</div><div>Viewport2 -> Render();</div><br></div></div><div><br></div><div>Thanks,<br></div>Bhanu<br><div><br></div></div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Mon, Nov 25, 2013 at 11:45 AM, David E DeMarle <span dir="ltr"><<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Instead of calling data->SetScalars() to put the array choice on the data call filter->SetInputArrayToProcess() to put the array choice onto each filter.<div>
<div><div><div><br></div></div></div></div>
</div><div class="gmail_extra"><div><br clear="all"><div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: <a href="tel:518-881-4909" value="+15188814909" target="_blank">518-881-4909</a></div>
<br><br></div><div><div><div class="gmail_quote">On Mon, Nov 25, 2013 at 9:31 AM, Bhanu Hariharan <span dir="ltr"><<a href="mailto:bhanu@petrotel.com" target="_blank">bhanu@petrotel.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr"><div><div><div><div>Thanks David for the suggestion of Branching pipeline. Are there any vtk examples for branching a pipeline.<br><br></div>I had previously attempted to do something like this<br><br>//Viewport 1<br>
myUnstructuredGrid.SetScalars(Array1);<br><br>Thresholdfilter1.SetInput(myUnstructuredGrid);<br></div>//Set Mapper1 and Actor1 etc.<br></div>Viewport1 -> Render();<br><br></div>//Viewport 2<br><div><div>myUnstructuredGrid.SetScalars(Array2);</div>
<br><div><div><div><div><div>Thresholdfilter2.SetInput(myUnstructuredGrid);<br></div><div>//Set Mapper2 and Actor2 etc.</div><div>Viewport2 -> Render();</div><div><br>But I ended up getting same rendering in both - i.e. Array2 in both viewports. Should I have seen different in both viewports? But if I made a deep copy of myUnstructuredGrid and used that for Thresholdfilter2, then I got Array 1 in Viewport 1 and Array 2 in viewport 2. Obviously I do not want to make a copy of myUnstructuredGrid as it can be huge.<br>
<br></div><div>Did you mean to suggest something different?<br></div><div><br></div>Thanks, <br>Bhanu<br><br></div><div><div><div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 25, 2013 at 7:56 AM, David E DeMarle <span dir="ltr"><<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">The number of inputs that the threshold filter accepts cannot be changed, without rewriting it that is.<div>
<br></div><div>Instead, think about making a branching pipeline, that is sending your unstructured grid into multiple threshold filters, the output of each is to be rendered independently.<br>
<div><br></div></div></div><div class="gmail_extra"><br clear="all"><div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: <a href="tel:518-881-4909" value="+15188814909" target="_blank">518-881-4909</a></div>
<br><br><div class="gmail_quote"><div><div>On Thu, Nov 21, 2013 at 3:22 PM, Bhanu Hariharan <span dir="ltr"><<a href="mailto:bhanu@petrotel.com" target="_blank">bhanu@petrotel.com</a>></span> wrote:<br></div>
</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div><div>
<div dir="ltr"><div><div><div><div><div><div><div><div>Dear vtk-users,<br><br></div>I am trying to do set up multiple Input Ports for a vtkThreshold type of filter.<br></div>Input to the threshold filter is a vtkUnstructuredGrid.<br>
<br></div><div>My code looks like<br><br></div><div>myThresholdfilter.SetInput(port0, myUnstructuredGrid);<br>myThresholdfilter.SetInput(port1, myUnstructuredGrid);<br><br><br></div>I would like to setup multiple viewports in my rendering window and in each viewport I would like a different grid property rendered. The grid property is a scalar array added to myUnstructuredGrid.<br>
</div><div><br>(I thought I can render different image in different viewports this way - I may be wrong here to begin with so if anyone wants to correct me here please feel free).<br></div><div><br>At run time as soon as the debugger hits the line <br>
myThresholdfilter.SetInput(port1, myUnstructuredGrid);<br></div>it complaints that I attempted to use port index 1 when number of ports is 1.<br><br></div>I can't even seem to do <br>myThresholdfilter.SetNumberofInputPorts(); <br>
</div><div>as this is a protected method.<br></div><div><br></div>How do I set up multiple input ports for a vtkThreshold filter. Please if anyone can shed some light on it, it would be a great help as I have spent a lot of time on it trying this and that without any luck.<br>
<br></div>Thanks in advance,<br></div>Bhanu<br></div>
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