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IDProjectCategoryView StatusDate SubmittedLast Update
0014028VTK(No Category)public2013-04-22 07:022016-08-12 09:55
Reporternizar sallem 
Assigned ToMarcus D. Hanwell 
PriorityurgentSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version5.10.1 
Target VersionFixed in Version 
Summary0014028: Functionnality break in handling transparency of vtkContextItem vtkContextActor vtkContext2D
DescriptionHi,

In PCL (www.pointclouds.org), we have several structures that inherit from vtkContextItem that we add to the scene per user request (circle, rectangle, image...) using a vtkContextActor through:
vtkSmartPointer<vtkContextActor> new_actor = vtkSmartPointer<vtkContextActor>::New ();
new_actor->GetScene ()->AddItem (some_item);

They used to work perfectly with vtk-5.8 with a transparent actor and only the shape opaque. Without changing any code in our side but just building against vtk-5.10.1 the transparency is not there anymore, there is black shade and the shape drawn upon it.

I am attaching screen shots of the visual result with both vtk-5.8 and vtk-5.10 so that you can notice the difference yourself. Results were obtained on a ubuntu precise I have no clue on how this can be fixed from our side or yours but I would appreciate your help to get back 5.8 results.


Cheers,
--
Nizar
TagsNo tags attached.
ProjectKitware
Typeincorrect functionality
Attached Filestgz file icon image_viewer_overlay.tgz [^] (1,573,365 bytes) 2013-04-22 07:02

 Relationships

  Notes
(0030687)
Marcus D. Hanwell (developer)
2013-05-03 10:57

 We have a test in VTK which overlays a 2D chart on a 3D scene (with the scene showing through), please see http://vtk.org/gitweb?p=VTKData.git;a=blob;f=Baseline/Charts/TestChartsOn3D.png [^] for the baseline image. If you could point me at the code in the PCL repository I can take a look and see why it might be breaking, but a normal scene only draws elements such as circles in the overlay pass (so transparency shouldn't even be necessary). The images you attached look like they have some nearly opaque background drawn over the entire scene.
(0031236)
Dave DeMarle (administrator)
2013-07-22 20:02

 moving all "tabled" bugs into "backlog" category since "tabled" is no longer used.
(0037300)
Kitware Robot (administrator)
2016-08-12 09:55

 Resolving issue as `moved`.

This issue tracker is no longer used. Further discussion of this issue may take place in the current VTK Issues page linked in the banner at the top of this page.

 Issue History
Date Modified Username Field Change
2013-04-22 07:02 nizar sallem New Issue
2013-04-22 07:02 nizar sallem File Added: image_viewer_overlay.tgz
2013-05-03 10:54 Marcus D. Hanwell Assigned To => Marcus D. Hanwell
2013-05-03 10:54 Marcus D. Hanwell Status backlog => tabled
2013-05-03 10:57 Marcus D. Hanwell Note Added: 0030687
2013-07-22 20:02 Dave DeMarle Status tabled => backlog
2013-07-22 20:02 Dave DeMarle Note Added: 0031236
2016-07-06 13:13 Marcus D. Hanwell Status backlog => expired
2016-07-06 13:13 Marcus D. Hanwell Resolution open => unable to reproduce
2016-08-12 09:55 Kitware Robot Note Added: 0037300
2016-08-12 09:55 Kitware Robot Status expired => closed
2016-08-12 09:55 Kitware Robot Resolution unable to reproduce => moved

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