# Latest

**URL:** https://discourse.vtk.org/latest.md?page=84

[Latest](https://discourse.vtk.org/latest.md) · [Categories](https://discourse.vtk.org/categories.md) · [Tags](https://discourse.vtk.org/tags.md)

**Page:** 85

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## [VTK 9.1.0.rc1 has been tagged](https://discourse.vtk.org/t/vtk-9-1-0-rc1-has-been-tagged/6747)

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**Author:** [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)\
**Replies:** 0\
**Last updated:** [October 1, 2021, 6:24pm UTC](https://discourse.vtk.org/t/vtk-9-1-0-rc1-has-been-tagged/6747 "2021-10-01T18:24:04Z")

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VTK 9.1.0.rc1 has been tagged. Wheels, docs, and sources will be available later today (or Monday). Please report any issues! Also, if there is anything that should be mentioned and is missing, please feel free to add to…

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## [VTK 9.1.0.rc2 has been tagged](https://discourse.vtk.org/t/vtk-9-1-0-rc2-has-been-tagged/6802)

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**Author:** [@vbolea](https://discourse.vtk.org/u/vbolea)\
**Replies:** 0\
**Last updated:** [October 11, 2021, 11:10pm UTC](https://discourse.vtk.org/t/vtk-9-1-0-rc2-has-been-tagged/6802 "2021-10-11T23:10:02Z")

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:tada: :tada: :tada: VTK 9.1.0.rc2 has been tagged. Wheels, docs, and sources are already available. Please report any issues! Also, if there is anything that should be mentioned and is missing, please feel free to add …

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## [VTK 9.2.0.rc2 has been tagged](https://discourse.vtk.org/t/vtk-9-2-0-rc2-has-been-tagged/9037)

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**Author:** [@vbolea](https://discourse.vtk.org/u/vbolea)\
**Replies:** 0\
**Last updated:** [July 28, 2022, 10:22pm UTC](https://discourse.vtk.org/t/vtk-9-2-0-rc2-has-been-tagged/9037 "2022-07-28T22:22:27Z")

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:tada: :tada: :tada: VTK 9.2.0.rc2 is out on PyPI and in the main repository. The website should be updated within a day or two. Please report any issues. :tada: :tada: :tada:

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## [VTK 9.2.5 is out](https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549)

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**Author:** [@mwestphal](https://discourse.vtk.org/u/mwestphal)\
**Replies:** 0\
**Last updated:** [January 27, 2023, 3:28pm UTC](https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549 "2023-01-27T15:28:48Z")

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VTK 9.2.5 is out. This release comes with three critical fixes, one for shipping webapp in VTK, one regarding window resizing and a fix for a CVE in VTK. Downloads: https://vtk.org/download/ Release notes: https://git…

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## [VTK 9.2.6 is out](https://discourse.vtk.org/t/vtk-9-2-6-is-out/10707)

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**Author:** [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)\
**Replies:** 0\
**Last updated:** [February 15, 2023, 11:21pm UTC](https://discourse.vtk.org/t/vtk-9-2-6-is-out/10707 "2023-02-15T23:21:22Z")

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VTK 9.2.6 is out. This release contains fixes for: y coordinates in the Conduit source filter static analysis support from the vtk module bounds extraction in vtkModifiedBSPTree OSMesa wheels are available on VTK’s P…

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## [vtkCellLocator::FindClosestPoint: returns incorrect results for certain dataset](https://discourse.vtk.org/t/vtkcelllocator-returns-incorrect-results-for-certain-dataset/11576)

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**Author:** [@lukas](https://discourse.vtk.org/u/lukas)\
**Replies:** 7\
**Last updated:** [June 1, 2023, 5:16pm UTC](https://discourse.vtk.org/t/vtkcelllocator-returns-incorrect-results-for-certain-dataset/11576 "2023-06-01T17:16:55Z")

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Hello, I am using the method vtkCellLocator::FindClosestPoint and get incorrect results for certain input point coordinates and polydata. The example code loads a polydata file and uses a vtkCellLocator to find the clo…

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## [Visualize DTI tensor image](https://discourse.vtk.org/t/visualize-dti-tensor-image/11595)

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**Author:** [@Peter](https://discourse.vtk.org/u/Peter)\
**Replies:** 1\
**Last updated:** [June 1, 2023, 4:33pm UTC](https://discourse.vtk.org/t/visualize-dti-tensor-image/11595 "2023-06-01T16:33:43Z")

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Hello, I have a NIFTI file with estimated DTI tensors consisting of 6 volumes (for each element of the diffusion tensor). I used “vtkNIFTIImageReader” with “TimeAsVectorOn” and received the image data, whereby the point…

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## [About vtkWindowToImageFilter](https://discourse.vtk.org/t/about-vtkwindowtoimagefilter/11592)

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**Author:** [@Theron](https://discourse.vtk.org/u/Theron)\
**Replies:** 0\
**Last updated:** [June 1, 2023, 9:01am UTC](https://discourse.vtk.org/t/about-vtkwindowtoimagefilter/11592 "2023-06-01T09:01:15Z")

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I use vtkWindowToImageFilter to extract content of a rendering window by renderWindows-\>Render() vtkSmartPointer imageFilters = vtkSmartPointer::New(); imageFilters-\>SetInput(renderWindows); imageFilters-\>Modified(); …

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## [Volume disappears when mixing with polydata \[VTK 8.2 - bug\]](https://discourse.vtk.org/t/volume-disappears-when-mixing-with-polydata-vtk-8-2-bug/5873)

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**Author:** [@Stephane-D](https://discourse.vtk.org/u/Stephane-D)\
**Replies:** 8\
**Last updated:** [June 1, 2023, 8:16am UTC](https://discourse.vtk.org/t/volume-disappears-when-mixing-with-polydata-vtk-8-2-bug/5873 "2023-06-01T08:16:40Z")

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Hi, We are using VTK for 3D rendering in our image analysis software and lately we are trying to migrate to VTK 8.2 as the version we are using (VTK 6.3) isn’t anymore compatible on newer OSX system (because of the used…

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## [Background color always black](https://discourse.vtk.org/t/background-color-always-black/7516)

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**Author:** [@Julienchz](https://discourse.vtk.org/u/Julienchz)\
**Replies:** 14\
**Last updated:** [June 1, 2023, 7:07am UTC](https://discourse.vtk.org/t/background-color-always-black/7516 "2023-06-01T07:07:36Z")

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Hi, I am using a QQuickVtkRenderWindow inside a bigger software with a smaller QQuickVtkRenderItem. I changed the background color of the QQuickVtkRenderItem no problem… but the QQuickVtkRenderWindow is still black… and …

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## [Is it possible to change the labels of vtkCameraOrientationWidget from X,Y,Z to U,V,N?](https://discourse.vtk.org/t/is-it-possible-to-change-the-labels-of-vtkcameraorientationwidget-from-x-y-z-to-u-v-n/7620)

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**Author:** [@AlexLuya](https://discourse.vtk.org/u/AlexLuya)\
**Replies:** 3\
**Last updated:** [June 1, 2023, 4:24am UTC](https://discourse.vtk.org/t/is-it-possible-to-change-the-labels-of-vtkcameraorientationwidget-from-x-y-z-to-u-v-n/7620 "2023-06-01T04:24:00Z")

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For vtkAxesActor,there is a bunch of methods like:SetXAxisLabelText can be used to change the text.Is there any counterpart for vtkCameraOrientationWidget to do same thing?

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## [How to generate less triangles for polygon triangulation?](https://discourse.vtk.org/t/how-to-generate-less-triangles-for-polygon-triangulation/11562)

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**Author:** [@gongwaner](https://discourse.vtk.org/u/gongwaner)\
**Replies:** 9\
**Last updated:** [May 31, 2023, 6:05pm UTC](https://discourse.vtk.org/t/how-to-generate-less-triangles-for-polygon-triangulation/11562 "2023-05-31T18:05:59Z")

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Given a set of planar points in 3d space(vector3d), I can make a polygon. To triangulate the polygon, there are many options. I used vtkTriangleFilter. It’s quite fast and robust, the only problem is that output of vtkT…

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## [help setting Manipulator Style](https://discourse.vtk.org/t/help-setting-manipulator-style/11583)

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**Author:** [@Alex\_Vergara](https://discourse.vtk.org/u/Alex_Vergara)\
**Replies:** 1\
**Last updated:** [May 31, 2023, 3:20pm UTC](https://discourse.vtk.org/t/help-setting-manipulator-style/11583 "2023-05-31T15:20:37Z")

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Hello I need help setting a specific Manipulator style in vtk.js, so far I have written function getInteractorStyle(){ // Interactor (view https://kitware.github.io/vtk-js/examples/InteractorStyleManipulator.html) …

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## [Surface overlapping on DualDepthPeeling](https://discourse.vtk.org/t/surface-overlapping-on-dualdepthpeeling/11586)

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**Author:** [@cnd](https://discourse.vtk.org/u/cnd)\
**Replies:** 0\
**Last updated:** [May 31, 2023, 2:42pm UTC](https://discourse.vtk.org/t/surface-overlapping-on-dualdepthpeeling/11586 "2023-05-31T14:42:05Z")

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Using VTK 9.1 with enabled translucent depth peeling (using dual depth peeling pass) translucent surfaces are overlapping opaque ones (MITK-based code) I was strongly following example https://vtk.org/Wiki/VTK/Tuto…

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## [IntersectWithLine potential bug](https://discourse.vtk.org/t/intersectwithline-potential-bug/11584)

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**Author:** [@marcomusy](https://discourse.vtk.org/u/marcomusy)\
**Replies:** 0\
**Last updated:** [May 31, 2023, 2:23pm UTC](https://discourse.vtk.org/t/intersectwithline-potential-bug/11584 "2023-05-31T14:23:45Z")

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The method seems to work well in general but not in this case when the polydata is the output of vtkAppendPolyData: circles.vtk (51.1 KB) import vtk reader = vtk.vtkPolyDataReader() reader.SetFileName("circles.vtk") r…

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## [Combining vtkVolume with vtkImageActor - opacity issues](https://discourse.vtk.org/t/combining-vtkvolume-with-vtkimageactor-opacity-issues/11582)

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**Author:** [@mortifiedpenguin](https://discourse.vtk.org/u/mortifiedpenguin)\
**Replies:** 1\
**Last updated:** [May 31, 2023, 10:06am UTC](https://discourse.vtk.org/t/combining-vtkvolume-with-vtkimageactor-opacity-issues/11582 "2023-05-31T10:06:17Z")

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I’m visualizing a CT dataset as a vtkVolume. Then, I display an arbitrary oblique slice in the dataset. This works fine with vtkReslice and vtkImageActor, setting the position and orientation. However, it seems that the …

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## [Pyvista subplot with VRML](https://discourse.vtk.org/t/pyvista-subplot-with-vrml/11568)

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**Author:** [@simon.rit](https://discourse.vtk.org/u/simon.rit)\
**Replies:** 5\
**Last updated:** [May 30, 2023, 4:30pm UTC](https://discourse.vtk.org/t/pyvista-subplot-with-vrml/11568 "2023-05-30T16:30:50Z")

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I am trying to use Pyvista to plot two VRML files next to each other using Pyvista’s subplot. However, the two files are overlaid on each other in the first subplot, as shown with the teapot and sextant files with the fo…

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## [contour filter algorithm](https://discourse.vtk.org/t/contour-filter-algorithm/11556)

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**Author:** [@danpak94](https://discourse.vtk.org/u/danpak94)\
**Replies:** 6\
**Last updated:** [May 30, 2023, 3:20pm UTC](https://discourse.vtk.org/t/contour-filter-algorithm/11556 "2023-05-30T15:20:48Z")

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Hello, I have been using vtkContourFilter quite frequently to generate surface meshes from SDF. From what I understand, there are other options for the contour method, like vtkMarchingCubes and vtkFlyingEdges3D. Marchi…

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## [How to Implement Scissors tool?](https://discourse.vtk.org/t/how-to-implement-scissors-tool/7890)

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**Author:** [@MAdelElbayumi](https://discourse.vtk.org/u/MAdelElbayumi)\
**Replies:** 6\
**Last updated:** [May 30, 2023, 3:13pm UTC](https://discourse.vtk.org/t/how-to-implement-scissors-tool/7890 "2023-05-30T15:13:43Z")

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Hello All, I am using VTK for a long time, and there’s this feature that I couldn’t implement in any version (C++/JS) which is the scissors tool where you can draw a 2D contour, then it automatically hides/shows the proj…

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## [How to use vtk.js volume masking？](https://discourse.vtk.org/t/how-to-use-vtk-js-volume-masking/11558)

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**Author:** [@aleaf2023](https://discourse.vtk.org/u/aleaf2023)\
**Replies:** 0\
**Last updated:** [May 29, 2023, 1:41am UTC](https://discourse.vtk.org/t/how-to-use-vtk-js-volume-masking/11558 "2023-05-29T01:41:40Z")

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How to use vtk.js volume masking to image cutting？Where’s the example?

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## [Partial transparency rendering issue](https://discourse.vtk.org/t/partial-transparency-rendering-issue/11527)

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**Author:** [@jilei-hao](https://discourse.vtk.org/u/jilei-hao)\
**Replies:** 4\
**Last updated:** [May 30, 2023, 2:06pm UTC](https://discourse.vtk.org/t/partial-transparency-rendering-issue/11527 "2023-05-30T14:06:48Z")

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Hi, I’m using a vtkLookupTable to make some label semi-transparent in a vtkpolydata, with label data in a point data array. But the the transparency is not rendered correctly when camera turned to certain angle. I uplo…

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## [how to expand a polydata?](https://discourse.vtk.org/t/how-to-expand-a-polydata/11570)

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**Author:** [@zhang-qiang-github](https://discourse.vtk.org/u/zhang-qiang-github)\
**Replies:** 3\
**Last updated:** [May 30, 2023, 1:08pm UTC](https://discourse.vtk.org/t/how-to-expand-a-polydata/11570 "2023-05-30T13:08:56Z")

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For example, I have a polydata: the black object in the following figure. Then, I hope to expand it, and I expect the result is the red object. The hole in the black object would disappear in the red object. A possib…

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## [How to add a reference plane(background grid)?](https://discourse.vtk.org/t/how-to-add-a-reference-plane-background-grid/11560)

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**Author:** [@AlexLuya](https://discourse.vtk.org/u/AlexLuya)\
**Replies:** 1\
**Last updated:** [May 30, 2023, 7:37am UTC](https://discourse.vtk.org/t/how-to-add-a-reference-plane-background-grid/11560 "2023-05-30T07:37:22Z")

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Hello,I found an image in:MPM Landslide - DS Use Case Products Obviously,in ParaView,a reference plane(background grid) is added.I can do same thing by adding a vtkPlane,but it’s size is limited no matter how large i…

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## [Feature request: add ACVD uniform remeshing filter](https://discourse.vtk.org/t/feature-request-add-acvd-uniform-remeshing-filter/10346)

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**Author:** [@lassoan](https://discourse.vtk.org/u/lassoan)\
**Replies:** 9\
**Last updated:** [May 30, 2023, 7:26am UTC](https://discourse.vtk.org/t/feature-request-add-acvd-uniform-remeshing-filter/10346 "2023-05-30T07:26:34Z")

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A robust, high-quality uniform remeshing filter is an essential tool in any mesh modelling library. I know that VTK was originally not meant for modelling and probably there was no known open-source algorithm for uniform…

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## [how to clip vtkImageData with the specified mask?](https://discourse.vtk.org/t/how-to-clip-vtkimagedata-with-the-specified-mask/8352)

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**Author:** [@zhang-qiang-github](https://discourse.vtk.org/u/zhang-qiang-github)\
**Replies:** 5\
**Last updated:** [May 30, 2023, 1:40am UTC](https://discourse.vtk.org/t/how-to-clip-vtkimagedata-with-the-specified-mask/8352 "2023-05-30T01:40:36Z")

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In my project, I have segmented the heart, which means that I have a mask. The mask means the pixel inside heart is one, while the pixel outside heart is zero. Now, I want to display only this heart using vtkFixedPointV…

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## [About spacing of ImageData when implementing the scissors tool](https://discourse.vtk.org/t/about-spacing-of-imagedata-when-implementing-the-scissors-tool/11563)

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**Author:** [@dbtruong](https://discourse.vtk.org/u/dbtruong)\
**Replies:** 1\
**Last updated:** [May 30, 2023, 1:24am UTC](https://discourse.vtk.org/t/about-spacing-of-imagedata-when-implementing-the-scissors-tool/11563 "2023-05-30T01:24:24Z")

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Hello, I am using VTK for building a function of cropping freehand. My code is below (source: qSlicerSegmentEditorScissorsEffect.cxx) # Step 1: Drawing a 2D contour on the screen # Step 2: Mapping display space points t…

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## [How to add a far more bigger actor and change the clip range and keep the camera distance at the same time?](https://discourse.vtk.org/t/how-to-add-a-far-more-bigger-actor-and-change-the-clip-range-and-keep-the-camera-distance-at-the-same-time/11559)

<div class="topic-metadata">

**Author:** [@AlexLuya](https://discourse.vtk.org/u/AlexLuya)\
**Replies:** 1\
**Last updated:** [May 29, 2023, 7:20pm UTC](https://discourse.vtk.org/t/how-to-add-a-far-more-bigger-actor-and-change-the-clip-range-and-keep-the-camera-distance-at-the-same-time/11559 "2023-05-29T19:20:22Z")

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Hello,I add a small actor first,then add another far more bigger actor,then 1,If not invoking the renderer-\>ResetCamera(),everything seems as expected like this: but if scrolling the mouse wheel to change the cam…

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## [GPU rendering error on MacOS](https://discourse.vtk.org/t/gpu-rendering-error-on-macos/11528)

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**Author:** [@Pisces2018](https://discourse.vtk.org/u/Pisces2018)\
**Replies:** 2\
**Last updated:** [May 29, 2023, 7:17am UTC](https://discourse.vtk.org/t/gpu-rendering-error-on-macos/11528 "2023-05-29T07:17:49Z")

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When the 3D window was first opened, it rendered normal in default GPU mode. When I perform the cut bedplate operation(just change the pixel value in the volume data), the render is abnormal. Windows OS, render is norma…

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## [VTK+WebGPU: native graphics APIs on the desktop](https://discourse.vtk.org/t/vtk-webgpu-native-graphics-apis-on-the-desktop/11550)

<div class="topic-metadata">

**Author:** [@jaswantp](https://discourse.vtk.org/u/jaswantp)\
**Replies:** 1\
**Last updated:** [May 28, 2023, 1:09am UTC](https://discourse.vtk.org/t/vtk-webgpu-native-graphics-apis-on-the-desktop/11550 "2023-05-28T01:09:14Z")

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We are making efforts to implement VTK rendering with WebGPU on the desktop using native graphics APIs such as DirectX12, Metal and Vulkan. Read more on our blog! VTK-WebGPU on the desktop

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## [how can i not output InformationKey when i output my data to vtu with vtkUnstructuredGrid](https://discourse.vtk.org/t/how-can-i-not-output-informationkey-when-i-output-my-data-to-vtu-with-vtkunstructuredgrid/11554)

<div class="topic-metadata">

**Author:** [@xiaojinyu-hhu](https://discourse.vtk.org/u/xiaojinyu-hhu)\
**Replies:** 0\
**Last updated:** [May 27, 2023, 4:27pm UTC](https://discourse.vtk.org/t/how-can-i-not-output-informationkey-when-i-output-my-data-to-vtu-with-vtkunstructuredgrid/11554 "2023-05-27T16:27:12Z")

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I output my data to .vtu with vtkXMLUnstructuredGridWriter. However, the vtu file always has “InformationKey”. I don’t want to output this information. the vtu file shown as: \<?xml version="1.0"?\> \<VTKFile type="Unstr…

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