Hello,<br><br>I have recently started using VTK. First, let me say thanks! It is amazing.<br>I am working on an application in ITTVIS IDL that will communicate with a DLL (C++) that contains VTK code.<br>I have the DLL and the communication working fine and am able to pass data between the programs.<br>
I want to make a bunch of polygons and pass them through the generate tube filter before passing it back to IDL.<br><br>I am passing two arrays from IDL:<br><br>1) Array of points in floats. 1D. Form: X0 Y0 Z0 X1 Y1 Z1 X2 Y2 Z2<br>
<br>2) Array of connectivity in int. 1D Form: N P0 P1 P2 N P1 P3 N P2 P3<br><br><br>** I think the data is in the form that it is represented in memory in VTK. (As in pg. 126 4th edition, OO approach to 3D graphics)<br>
<br>The usual approach would be to create a vtkPolyData array (for the polygons), vtkPoints, and a vtkCellArray for connectivity).<br>And, then to fill them using vtkPoints->InsertPoint, vtkCellArray->InsertNextCell, and then vtkPolyData->setPoints.<br>
<br>However, I need this to be very effcient as I may be calling these routines repeatedly. Given, that the data is almost in the form that VTK expects.<br>I want to be able to stuff the data in whole vs point by point, cell by cell.<br>
<br>I can't seem to find a good explanation on how I would go about doing this.<br><br>There seems to be a ->setData method in vtkPoints class but it takes a vtkDataArray and I currently just have a plain old array of floats.<br>
I think the same goes for setCells in the vtkCellArray class.<br><br>Could someone give me a quick example of the few lines of code it would take to impelement this. Or,, point me to a resource that shows an example of this<br>
<br>Thanks<br><br>Matt<br>