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<p class=MsoNormal>Hi everyone;<o:p></o:p></p>
<p class=MsoNormal>I am using vtk java wrapping for MIP(maximum intensity
projection)/MINIP(minimum intensity projection)…I figured out that
vtkVolumeRayCastMapper doesn’t support minip so decided to use
vtkFixedPointRayCastMapper for these projections…First I wrote in C++ and
everything works great…But in java(exactly the same code but in java
syntax of course) it always crashes when rendering the vtkPanel first time and
gives this stack overflow exception:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>An unrecoverable stack overflow has occurred.<o:p></o:p></p>
<p class=MsoNormal>#<o:p></o:p></p>
<p class=MsoNormal># An unexpected error has been detected by Java Runtime
Environment:<o:p></o:p></p>
<p class=MsoNormal>#<o:p></o:p></p>
<p class=MsoNormal># EXCEPTION_STACK_OVERFLOW (0xc00000fd) at pc=0x50aee7e7,
pid=3268, tid=5264<o:p></o:p></p>
<p class=MsoNormal>#<o:p></o:p></p>
<p class=MsoNormal># Java VM: Java HotSpot(TM) Client VM (11.0-b16 mixed mode
windows-x86)<o:p></o:p></p>
<p class=MsoNormal># Problematic frame:<o:p></o:p></p>
<p class=MsoNormal># C [vtkVolumeRendering.dll+0x4fe7e7]<o:p></o:p></p>
<p class=MsoNormal>#<o:p></o:p></p>
<p class=MsoNormal><o:p></o:p></p>
<p class=MsoNormal>I change my JVM’s heap space( netbeans_default_options="-J-client
-J-Xverify:none -J-Xss2m -J-Xms200m -J-XX:PermSize=32m -J-XX:MaxPermSize=200m
-J-Dapple.laf.useScreenMenuBar=true -J-Dsun.java2d.noddraw=true" it’s
minimum was 32m before the changing, should i change the J-XX:PermSize=32m too?
) but it couldn’t do the trick…I think this bug is related to my
problem : <a href="http://www.vtk.org/Bug/view.php?id=6443">http://www.vtk.org/Bug/view.php?id=6443</a>
and i patched my vtk source code with the patch that Levap attaches, but
nothing changes…How can i use vtkFixedPointRayCastMapper with my java project?
This is my testing code in c++, i tried every possible combinations with vtkImageCast
output or reader output, this code works but in java it always crashes…<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Yours sincerely…<o:p></o:p></p>
<p class=MsoNormal>Sercan…<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkRenderer.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkRenderWindow.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkRenderWindowInteractor.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkPolyDataToImageStencil.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkImageData.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkDICOMImageReader.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkImageCast.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkFixedPointVolumeRayCastMapper.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkVolumeRayCastMapper.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include "vtkVolumeRayCastMIPFunction.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkPiecewiseFunction.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkVolumeProperty.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include "vtkVolume.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include
"vtkTextactor.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include "Math.h"<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include <string><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include <iostream><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>#include <sstream><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>class test<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>public:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> test();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>};<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>test::test()<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> vtkDICOMImageReader
*reader= vtkDICOMImageReader::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> reader->SetDirectoryName("C:\\Dicom\\MANIX\\manix-study\\ANGIOCT");<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
reader->SetDataScalarTypeToUnsignedChar();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> reader->Update();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> vtkImageCast
*imageCast=vtkImageCast::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
imageCast->SetInputConnection(reader->GetOutputPort());<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
imageCast->SetOutputScalarTypeToUnsignedChar();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
imageCast->Update();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> double
*range=imageCast->GetOutput()->GetScalarRange();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> double
window=range[1]-range[0];<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> double
level=window/2;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> window=1500;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> level=20;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
vtkPiecewiseFunction *opacityFunction=vtkPiecewiseFunction::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
opacityFunction->AddPoint(level-window/2.0,0.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
opacityFunction->AddPoint(level+window/2.0,1.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
vtkPiecewiseFunction *grayFunction=vtkPiecewiseFunction::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
grayFunction->AddSegment(level - window / 2,0.0,level + window / 2 , 1.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
vtkFixedPointVolumeRayCastMapper
*raycastMapper=vtkFixedPointVolumeRayCastMapper::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
//vtkVolumeRayCastMIPFunction *mipFunction=vtkVolumeRayCastMIPFunction::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
//mipFunction->SetMaximizeMethodToScalarValue();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> //vtkVolumeRayCastMapper
*raycastMapper=vtkVolumeRayCastMapper::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
raycastMapper->SetInputConnection(imageCast->GetOutputPort());<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
raycastMapper->SetSampleDistance(1.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
//raycastMapper->SetVolumeRayCastFunction(mipFunction);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
raycastMapper->SetBlendModeToMaximumIntensity();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
raycastMapper->ReleaseDataFlagOn();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
vtkVolumeProperty *volumeProperty=vtkVolumeProperty::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetScalarOpacity(opacityFunction);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetColor(grayFunction);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetInterpolationTypeToLinear();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->ShadeOff();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetIndependentComponents(0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
/*volumeProperty->SetSpecularPower(10);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetSpecular(1.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetAmbient(1.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volumeProperty->SetDiffuse(1.0);*/<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> vtkVolume
*volume=vtkVolume::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volume->SetMapper(raycastMapper);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volume->SetProperty(volumeProperty);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
volume->Update(); <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> vtkRenderer
*aRenderer = vtkRenderer::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
aRenderer->AddActor(volume);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> vtkRenderWindow *renWin =
vtkRenderWindow::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
renWin->AddRenderer(aRenderer);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> vtkRenderWindowInteractor
*iren = vtkRenderWindowInteractor::New();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
iren->SetRenderWindow(renWin);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> //
aRenderer->ResetCamera();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> //aRenderer->ResetCameraClippingRange();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> aRenderer->Render();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
aRenderer->SetBackground(0.5,0.5,0.5);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> renWin->SetSize(512,
512);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> // interact with data<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> iren->Initialize();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> iren->Start();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>}<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>int main()<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> test t;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> return 0;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>}</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
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