[vtkusers] .NET 2003 + vtkRectilinearGridToPolyDataFilter

Wed Apr 27 10:36:48 EDT 2005

Winn,

	Ok I understand what happen...but I have no solution right now. Anyway 
if you read the documentation from:

http://www.vtk.org/doc/nightly/html/classvtkRectilinearGridToPolyDataFilter.html

	It says:

vtkRectilinearGridToPolyDataFilter is a filter whose subclasses take as 
input rectilinear grid datasets and generate polygonal data on output.

	the keyword is: "subclasses", so no this class does not do anything. It 
used to be paret of the VTK architecture, but was recently deprecated in 
favor of a new pipeline. The sad thing is that we need to keep this 
class around for people that -in the past- derived from it but still 
want to use VTK from CVS.

Sorry for troubles
Mathieu
Ps: There is still the VTK 4.2 documentation:
http://www.vtk.org/doc/release/4.2/html/classvtkRectilinearGridToPolyDataFilter.html
You see that there is actually subclasses to this class, this should 
help you find the classes in the new architecture.

Winfried Bilgic wrote:
> Hello again, 
> 
> following the inheritance diagram for the "vtkRectilinearGridToPolyDataFilter" the header include every necessary file. Otherwise why should the program know from "vtkAlgorithm" and report the error conversion between these types are not possible ?
> 
> Could it be a bug ? Or simply a different type of instanciation ?
> 
> Regards Winn
> 
> 
> "Paul Tait - OPES" <Paul at opes.com.au> schrieb am 27.04.05 05:38:23:
> 
> Probably you need to include the header file
> 
> 
> -----Original Message-----
> From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
> Behalf Of Winfried Bilgic
> Sent: Wednesday, 27 April 2005 4:56 AM
> To: vtkusers at vtk.org
> Subject: [vtkusers] .NET 2003 + vtkRectilinearGridToPolyDataFilter
> 
> 
> Hello VtkUsers, 
> 
> sorry for that simple question, i'm new to vtk. I'm trying to extract
> PolyData from the RectilinearGrid without any success. For that task i
> took the "RGrid.cxx" example and added the line:
> 
> Line(72):: vtkRectilinearGridToPolyDataFilter *MyRectPolyData =
> vtkRectilinearGridToPolyDataFilter::New();
> 
> ended in compile error:
> 
> RGrid.cxx(72): error C2440: 'Initialisierung': 'vtkAlgorithm *' cannot
> converted into 'vtkRectilinearGridToPolyDataFilter *' 
> 
> Any idea or hint is apperciated, 
> 
> Regards Winn
> 
> ####################################
> #### Complete Source file
> ####################################
> 
> #include "vtkRenderer.h"
> #include "vtkRenderWindow.h"
> #include "vtkRenderWindowInteractor.h"
> #include "vtkFloatArray.h"
> #include "vtkRectilinearGrid.h"
> #include "vtkRectilinearGridToPolyDataFilter.h"
> #include "vtkRectilinearGridGeometryFilter.h"
> #include "vtkPolyDataMapper.h"
> #include "vtkActor.h"
> #include "vtkProperty.h"
> #include "vtkCamera.h"
> 
> int main( int argc, char *argv[] )
> {
>   unsigned int i;
>   double x[47]={
>          -1.22396, -1.17188, -1.11979, -1.06771, -1.01562, -0.963542, 
>          -0.911458, -0.859375, -0.807292, -0.755208, -0.703125,
> -0.651042, 
>          -0.598958, -0.546875, -0.494792, -0.442708, -0.390625,
> -0.338542, 
>          -0.286458, -0.234375, -0.182292, -0.130209, -0.078125,
> -0.026042, 
>           0.0260415, 0.078125, 0.130208, 0.182291, 0.234375, 0.286458, 
>           0.338542, 0.390625, 0.442708, 0.494792, 0.546875, 0.598958, 
>           0.651042, 0.703125, 0.755208, 0.807292, 0.859375, 0.911458, 
>           0.963542, 1.01562, 1.06771, 1.11979, 1.17188};
>   double y[33]={-1.25, -1.17188, -1.09375, -1.01562, -0.9375, -0.859375,
> 
>          -0.78125, -0.703125, -0.625, -0.546875, -0.46875, -0.390625, 
>          -0.3125, -0.234375, -0.15625, -0.078125, 0, 0.078125, 
>           0.15625, 0.234375, 0.3125, 0.390625, 0.46875, 0.546875, 
>           0.625, 0.703125, 0.78125, 0.859375, 0.9375, 1.01562, 
>           1.09375, 1.17188, 1.25};
>   double z[44]={0, 0.1, 0.2, 0.3, 0.4, 0.5, 
>          0.6, 0.7, 0.75, 0.8, 0.9, 1, 
>          1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 
>          1.7, 1.75, 1.8, 1.9, 2, 2.1, 
>          2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 
>          2.75, 2.8, 2.9, 3, 3.1, 3.2, 
>          3.3, 3.4, 3.5, 3.6, 3.7, 3.75, 
>          3.8, 3.9};
> 
>   vtkFloatArray *xCoords = vtkFloatArray::New();
>   vtkFloatArray *yCoords = vtkFloatArray::New();
>   vtkFloatArray *zCoords = vtkFloatArray::New();
> 
>   for (i=0; i<47; i++) xCoords->InsertNextValue(x[i]);
>   for (i=0; i<33; i++) yCoords->InsertNextValue(y[i]);
>   for (i=0; i<44; i++) zCoords->InsertNextValue(z[i]);
>   
>   vtkRectilinearGrid *rgrid = vtkRectilinearGrid::New();
>     rgrid->SetDimensions(47,33,47);
>     rgrid->SetXCoordinates(xCoords);
>     rgrid->SetYCoordinates(yCoords);
>     rgrid->SetZCoordinates(zCoords);
> 
>   // ******************************
>   vtkRectilinearGridToPolyDataFilter *MyRectPolyData =
> vtkRectilinearGridToPolyDataFilter::New();
>     MyRectPolyData->SetInput(rgrid);
>   // ******************************
>   
>     // Extract a plane from the grid to see what we've got.
>   vtkRectilinearGridGeometryFilter *plane =
> vtkRectilinearGridGeometryFilter::New();
>     plane->SetInput(rgrid);
>     plane->SetExtent(0,46, 16,16, 0,43);
>     
>   vtkPolyDataMapper *rgridMapper = vtkPolyDataMapper::New();
>       rgridMapper->SetInput(plane->GetOutput());
> 
>   vtkActor *wireActor = vtkActor::New();
>       wireActor->SetMapper(rgridMapper);
>       wireActor->GetProperty()->SetRepresentationToWireframe();
>       wireActor->GetProperty()->SetColor(0,0,0);
> 
>   // Create the usual rendering stuff.
>   vtkRenderer *renderer = vtkRenderer::New();
>   vtkRenderWindow *renWin = vtkRenderWindow::New();
>     renWin->AddRenderer(renderer);
>   vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
>     iren->SetRenderWindow(renWin);
> 
>   renderer->AddActor(wireActor);
>   renderer->SetBackground(1,1,1);
>   renderer->GetActiveCamera()->Elevation(60.0);
>   renderer->GetActiveCamera()->Azimuth(30.0);
>   renderer->GetActiveCamera()->Zoom(1.0);
>   
>   renWin->SetSize(300,300);
> 
>   // interact with data
>   renWin->Render();
>   iren->Start();
> 
>   // Clean up
>   renderer->Delete();
>   renWin->Delete();
>   iren->Delete();
>   xCoords->Delete();
>   yCoords->Delete();
>   zCoords->Delete();
>   rgrid->Delete();
>   rgridMapper->Delete();
>   wireActor->Delete();
> 
>   return 0;
> }
> 
> 
> 
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