[vtkusers] vtk errors occurs in GTK application
Wang HJ
hjwang126 at hotmail.com
Tue Feb 7 07:21:51 EST 2006
Hello,
I wrote about my visualization code with vtk, I hope GTK can call that code.
I used example of medical in vtk as my own example. I just use the gtk code
"gtk_signal_connect(GTK_OBJECT(itemv1),"activate",GTK_SIGNAL_FUNC(doVisual),NULL);"
to call it. The visualization window will creat by VTK. I can build my
application successfull and run the application first, But as I use the gtk
to call that vtk code, it will throw me an error message see " unhandled
exception of type 'System.TypeLoadException' occurred in
application.exe,Additional information: Could not load type vtkImageData
from assembly application, Version=0.0.0.0, Culture=neutral,
PublicKeyToken=null", I found it induced by such line i.e."
skinExtractor->SetInput((vtkDataSet *) v16->GetOutput());". How can I solve
this problem. Could I run the vtk code in GTK enviroment.
Thanks a lot.
see my vtk code as the follows:
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkVolume16Reader.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkOutlineFilter.h"
#include "vtkCamera.h"
#include "vtkProperty.h"
#include "vtkPolyDataNormals.h"
#include "vtkContourFilter.h"
#include <iostream>
#include <string.h>
using namespace std;
void doVisual()
{
vtkRenderer *aRenderer = vtkRenderer::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();
renWin->AddRenderer(aRenderer);
vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow(renWin);
vtkVolume16Reader *v16 = vtkVolume16Reader::New();
v16->SetDataDimensions (64,64);
v16->SetImageRange (1,93);
v16->SetDataByteOrderToLittleEndian();
v16->SetFilePrefix("C:/VTK-4.2-LatestRelease/VTK/Examples/Medical/Release/headsq/quarter");
v16->SetDataSpacing (3.2, 3.2, 1.5);
vtkContourFilter *skinExtractor = vtkContourFilter::New();
skinExtractor->SetInput((vtkDataSet *) v16->GetOutput());
skinExtractor->SetValue(0, 500);
vtkPolyDataNormals *skinNormals = vtkPolyDataNormals::New();
skinNormals->SetInput(skinExtractor->GetOutput());
skinNormals->SetFeatureAngle(60.0);
vtkPolyDataMapper *skinMapper = vtkPolyDataMapper::New();
skinMapper->SetInput(skinNormals->GetOutput());
skinMapper->ScalarVisibilityOff();
vtkActor *skin = vtkActor::New();
skin->SetMapper(skinMapper);
// An outline provides context around the data.
//
vtkOutlineFilter *outlineData = vtkOutlineFilter::New();
outlineData->SetInput((vtkDataSet *) v16->GetOutput());
vtkPolyDataMapper *mapOutline = vtkPolyDataMapper::New();
mapOutline->SetInput(outlineData->GetOutput());
vtkActor *outline = vtkActor::New();
outline->SetMapper(mapOutline);
outline->GetProperty()->SetColor(0,0,0);
// It is convenient to create an initial view of the data. The FocalPoint
// and Position form a vector direction. Later on (ResetCamera() method)
// this vector is used to position the camera to look at the data in
// this direction.
vtkCamera *aCamera = vtkCamera::New();
aCamera->SetViewUp (0, 0, -1);
aCamera->SetPosition (0, 1, 0);
aCamera->SetFocalPoint (0, 0, 0);
aCamera->ComputeViewPlaneNormal();
// Actors are added to the renderer. An initial camera view is created.
// The Dolly() method moves the camera towards the FocalPoint,
// thereby enlarging the image.
aRenderer->AddActor(outline);
aRenderer->AddActor(skin);
aRenderer->SetActiveCamera(aCamera);
aRenderer->ResetCamera ();
aCamera->Dolly(1.5);
// Set a background color for the renderer and set the size of the
// render window (expressed in pixels).
aRenderer->SetBackground(1,1,1);
renWin->SetSize(640, 480);
// Note that when camera movement occurs (as it does in the Dolly()
// method), the clipping planes often need adjusting. Clipping planes
// consist of two planes: near and far along the view direction. The
// near plane clips out objects in front of the plane; the far plane
// clips out objects behind the plane. This way only what is drawn
// between the planes is actually rendered.
aRenderer->ResetCameraClippingRange ();
// Initialize the event loop and then start it.
iren->Initialize();
iren->Start();
// It is important to delete all objects created previously to prevent
// memory leaks. In this case, since the program is on its way to
// exiting, it is not so important. But in applications it is
// essential.
v16->Delete();
skinExtractor->Delete();
skinNormals->Delete();
skinMapper->Delete();
skin->Delete();
outlineData->Delete();
mapOutline->Delete();
outline->Delete();
aCamera->Delete();
iren->Delete();
renWin->Delete();
aRenderer->Delete();
}
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