<div dir="ltr"><div>Hi Cory, </div><div><br></div>No, I don't receive an error message. <div>But when I move actors, they are overlapping. It doesn't prevent overlapping actors .</div><div><br></div><div>I don't know, maybe I made a mistake in the code.</div>

<div><br></div><div>Could You look at this part of code ? </div><div><br></div><div>Here, my code  :</div><div><br></div><div><div>int main(int, char *[])</div><div>{</div><div>  // Lower - first model</div><div>  vtkSmartPointer<vtkSTLReader> readerLower = vtkSmartPointer<vtkSTLReader>::New();</div>

<div>  readerLower->SetFileName("lower.stl");</div><div>  readerLower->Update();</div><div><br></div><div>  // Upper - second model</div><div>  vtkSmartPointer<vtkSTLReader> readerUpper = vtkSmartPointer<vtkSTLReader>::New();</div>

<div>  readerUpper->SetFileName("upper.stl");</div><div>  readerUpper->Update();</div><div><br></div><div>  // Create polydata</div><div>  vtkSmartPointer<vtkPolyData> lowerPolyData = readerLower->GetOutput();</div>

<div>  vtkSmartPointer<vtkPolyData> upperPolyData = readerUpper->GetOutput();</div><div><br></div><div>  // Set  input transform to avoid overlap actors (models)</div><div>  vtkSmartPointer<vtkTransform> transform = vtkSmartPointer<vtkTransform>::New();</div>

<div>  transform->PostMultiply();</div><div>  transform->RotateZ(180.0);</div><div>  transform->RotateX(180.0);</div><div>  transform->Translate(0,0,35);</div><div> </div><div>  // Set polydata filter </div><div>

  vtkSmartPointer<vtkTransformPolyDataFilter> transformFilter = vtkSmartPointer<vtkTransformPolyDataFilter>::New();</div><div>  transformFilter->SetInput(upperPolyData); </div><div>  transformFilter->SetTransform(transform);</div>

<div>  transformFilter->Update();</div><div> </div><div>  vtkSmartPointer<vtkPolyDataMapper> lowerMapper = vtkSmartPointer<vtkPolyDataMapper>::New();</div><div>  lowerMapper->SetInput(lowerPolyData);</div>

<div>  vtkSmartPointer<vtkPolyDataMapper> upperMapper =  vtkSmartPointer<vtkPolyDataMapper>::New();</div><div>  upperMapper->SetInput(upperPolyData);</div><div><br></div><div>  vtkSmartPointer<vtkActor> upperActor =  vtkSmartPointer<vtkActor>::New();</div>

<div>  upperActor->SetMapper(upperMapper);</div><div>  vtkSmartPointer<vtkActor> lowerActor =  vtkSmartPointer<vtkActor>::New();</div><div>  lowerActor->SetMapper(lowerMapper);</div><div>  lowerActor->SetUserTransform(transform);</div>

<div><br></div><div><b>  vtkSmartPointer<vtkIntersectionPolyDataFilter> intersectionPolyDataFilter = vtkSmartPointer<vtkIntersectionPolyDataFilter>::New();</b></div><div><b>  intersectionPolyDataFilter->SetInput( 0, lowerPolyData );</b></div>

<div><b>  intersectionPolyDataFilter->SetInput( 1, upperPolyData );</b></div><div><b>  intersectionPolyDataFilter->Update();</b></div><div><b> </b></div><div><b>  vtkSmartPointer<vtkPolyDataMapper> intersectionMapper = vtkSmartPointer<vtkPolyDataMapper>::New();</b></div>

<div><b>  intersectionMapper->SetInputConnection( intersectionPolyDataFilter->GetOutputPort() );</b></div><div><b>  intersectionMapper->ScalarVisibilityOff();</b></div><div><b> </b></div><div><b>  vtkSmartPointer<vtkActor> intersectionActor = vtkSmartPointer<vtkActor>::New();</b></div>

<div><b>  intersectionActor->SetMapper( intersectionMapper );</b></div><div><b>  intersectionActor->VisibilityOff();</b></div><div> </div><div><br></div><div>  // Visualization</div><div>  // Create a renderer, render window, and interactor</div>

<div><b>  vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();</b></div><div><b>  renderer->AddActor(lowerActor);</b></div><div><b>  renderer->AddActor(upperActor);</b></div><div>

<b>  renderer->AddActor(intersectionActor);</b><br></div><div>  </div><div>  // Render Window</div><div>  vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();</div><div>  renderWindow->AddRenderer(renderer);</div>

<div><br></div><div>  // Interactor</div><div>  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();</div><div>  renderWindowInteractor->SetRenderWindow(renderWindow);</div>

<div><br></div><div>  // Move actors</div><div>  vtkSmartPointer<vtkInteractorStyleTrackballActor> styleActor =  vtkSmartPointer<vtkInteractorStyleTrackballActor>::New(); </div><div>  renderWindowInteractor->SetInteractorStyle( styleActor );</div>

<div>  renderWindowInteractor->SetRenderWindow(renderWindow);</div><div><br></div><div>  // Render and interact</div><div>  renderer->SetBackground(.2, .3, .4);</div><div>  renderWindow->Render();</div><div>  renderWindowInteractor->Start();</div>

<div><br></div><div>  return EXIT_SUCCESS;</div><div>}</div></div><div><br></div><div><br></div><div>I would appreciate for any help please.</div><div><br></div><div>agatte</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">

2014/1/23 Cory Quammen-2 [via VTK] <span dir="ltr"><<a href="/user/SendEmail.jtp?type=node&node=5725554&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>></span><br><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div class="im">

        How do you know vtkIntersectionPolyDataFilter doesn't work?

Is the intersection empty? Do you get an error message?

<br><br>Thanks,

<br>Cory

<br><br></div><div><div class="h5">On Wed, Jan 22, 2014 at 4:57 PM, agatte <<a href="http://user/SendEmail.jtp?type=node&node=5725553&i=0" rel="nofollow" link="external" target="_blank">[hidden email]</a>> wrote:

<div><div class='shrinkable-quote'><br>> Hi,

<br>>

> I want to prevent overlapping/collision  of two actors in the render scene.

> I have already tried vtkIntersectionFilter, bu tit doesn't work in my case.

<br>>

> Could You advice me something different ?

<br>>

<br>> int main(int, char *[])

<br>> {

<br>>   // Lower - first model

<br>>   vtkSmartPointer<vtkSTLReader> readerLower =

<br>> vtkSmartPointer<vtkSTLReader>::New();

<br>>   readerLower->SetFileName("lower.stl");

<br>>   readerLower->Update();

<br>>

<br>>   // Upper - second model

<br>>   vtkSmartPointer<vtkSTLReader> readerUpper =

<br>> vtkSmartPointer<vtkSTLReader>::New();

<br>>   readerUpper->SetFileName("upper.stl");

<br>>   readerUpper->Update();

<br>>

<br>>   // Create polydata

<br>>   vtkSmartPointer<vtkPolyData> lowerPolyData = readerLower->GetOutput();

<br>>   vtkSmartPointer<vtkPolyData> pointsUpperPolyData =

<br>> readerUpper->GetOutput();

<br>>   pointsUpperPolyData->GetPoints();

<br>>

<br>>

<br>>   // Set  input transform to avoid overlap actors (models)

<br>>   vtkSmartPointer<vtkTransform> transform =

<br>> vtkSmartPointer<vtkTransform>::New();

<br>>   transform->PostMultiply();

<br>>   transform->RotateZ(180.0);

<br>>   transform->RotateX(180.0);

<br>>   transform->Translate(0,0,35);

<br>>

<br>>   // Set polydata filter

<br>>   vtkSmartPointer<vtkTransformPolyDataFilter> transformFilter =

<br>> vtkSmartPointer<vtkTransformPolyDataFilter>::New();

<br>>   transformFilter->SetInput(pointsUpperPolyData); // upperPolyData

<br>>   transformFilter->SetTransform(transform);

<br>>   transformFilter->Update();

<br>>

<br>>   vtkSmartPointer<vtkPolyDataMapper> lowerMapper =

<br>> vtkSmartPointer<vtkPolyDataMapper>::New();

<br>>   lowerMapper->SetInput(lowerPolyData);

<br>>   vtkSmartPointer<vtkPolyDataMapper> upperMapper =

<br>> vtkSmartPointer<vtkPolyDataMapper>::New();

<br>>   upperMapper->SetInput(pointsUpperPolyData);

<br>>

<br>>   vtkSmartPointer<vtkActor> upperActor =  vtkSmartPointer<vtkActor>::New();

<br>>   upperActor->SetMapper(upperMapper);

<br>>   vtkSmartPointer<vtkActor> lowerActor =  vtkSmartPointer<vtkActor>::New();

<br>>   lowerActor->SetMapper(lowerMapper);

<br>>   lowerActor->SetUserTransform(transform);

<br>>

<br>>

<br>>   vtkSmartPointer<vtkIntersectionPolyDataFilter> intersectionPolyDataFilter

<br>> =

<br>>     vtkSmartPointer<vtkIntersectionPolyDataFilter>::New();

<br>>   intersectionPolyDataFilter->SetInput( 0, lowerPolyData );

<br>>   intersectionPolyDataFilter->SetInput( 1, pointsUpperPolyData );

<br>>   intersectionPolyDataFilter->Update();

<br>>

<br>>   vtkSmartPointer<vtkPolyDataMapper> intersectionMapper =

<br>> vtkSmartPointer<vtkPolyDataMapper>::New();

<br>>   intersectionMapper->SetInputConnection(

<br>> intersectionPolyDataFilter->GetOutputPort() );

<br>>   intersectionMapper->ScalarVisibilityOff();

<br>>

<br>>   vtkSmartPointer<vtkActor> intersectionActor =

<br>> vtkSmartPointer<vtkActor>::New();

<br>>   intersectionActor->SetMapper( intersectionMapper );

<br>>

<br>>   //vtkSmartPointer<vtkRenderer> renderer =

<br>> vtkSmartPointer<vtkRenderer>::New();

<br>>   //renderer->AddViewProp(sphere1Actor);

<br>>   //renderer->AddViewProp(sphere2Actor);

<br>>   //renderer->AddViewProp(intersectionActor);

<br>>

<br>>

<br>>   // Visualization

<br>>

<br>>   // Create a renderer, render window, and interactor

<br>>   vtkSmartPointer<vtkRenderer> renderer =

<br>> vtkSmartPointer<vtkRenderer>::New();

<br>>   renderer->AddActor(lowerActor);

<br>>   renderer->AddActor(upperActor);

<br>>   //renderer->AddActor(booleanOperationActor);

<br>>   renderer->AddActor(intersectionActor);

<br>>

<br>>   // Render Window

<br>>   vtkSmartPointer<vtkRenderWindow> renderWindow =

<br>> vtkSmartPointer<vtkRenderWindow>::New();

<br>>   renderWindow->AddRenderer(renderer);

<br>>

<br>>   // Interactor

<br>>   vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =

<br>> vtkSmartPointer<vtkRenderWindowInteractor>::New();

<br>>   renderWindowInteractor->SetRenderWindow(renderWindow);

<br>>

<br>>   // Move actors

<br>>   vtkSmartPointer<vtkInteractorStyleTrackballActor> styleActor =

<br>> vtkSmartPointer<vtkInteractorStyleTrackballActor>::New();

<br>>   renderWindowInteractor->SetInteractorStyle( styleActor );

<br>>   renderWindowInteractor->SetRenderWindow(renderWindow);

<br>>

<br>>   // Render and interact

<br>>   renderer->SetBackground(.2, .3, .4);

<br>>   renderWindow->Render();

<br>>   renderWindowInteractor->Start();

<br>>

<br>>   return EXIT_SUCCESS;

<br>> }

<br>>

<br>>

> I would appreciate for any help please.

<br>>

<br>>

<br>>

<br>>

<br>>

<br>> --

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