# Development

**URL:** https://discourse.vtk.org/c/development/7.md?page=36

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

**Page:** 37

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## [Python wrapping (functions are missing in code generated)](https://discourse.vtk.org/t/python-wrapping-functions-are-missing-in-code-generated/5983)

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**Author:** [@Jens\_Munk\_Hansen](https://discourse.vtk.org/u/Jens_Munk_Hansen)\
**Replies:** 4\
**Last updated:** [June 11, 2021, 5:45pm UTC](https://discourse.vtk.org/t/python-wrapping-functions-are-missing-in-code-generated/5983 "2021-06-11T17:45:15Z")

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Hi supporters Just started a larger project based on the VTK pipeline and in relation to this I am creating a number of modules, which could potentially be future remote modules of VTK. I looked into how vtk-dicom was m…

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## [VTK debug leaks with Visual studio 2013](https://discourse.vtk.org/t/vtk-debug-leaks-with-visual-studio-2013/5827)

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**Author:** [@sateesh](https://discourse.vtk.org/u/sateesh)\
**Replies:** 13\
**Last updated:** [June 8, 2021, 3:21pm UTC](https://discourse.vtk.org/t/vtk-debug-leaks-with-visual-studio-2013/5827 "2021-06-08T15:21:35Z")

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Hi, I have observed some strange behavior with “VTK debug leaks” in VS 2013. In a sample project made with VTK 8.1, I’m able to get the debug leaks in console when I close the application. But in Main project, unable …

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## [Unstructured Grids for Blender](https://discourse.vtk.org/t/unstructured-grids-for-blender/1959)

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**Author:** [@tkeskita](https://discourse.vtk.org/u/tkeskita)\
**Replies:** 4\
**Last updated:** [June 8, 2021, 7:38am UTC](https://discourse.vtk.org/t/unstructured-grids-for-blender/1959 "2021-06-08T07:38:24Z")

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Hello VTK users, I’m developing a Blender add-on for editing 3D volume meshes. I’ve just added experimental support (import and export) for VTK Unstructured Grid (.vtu) ASCII format to the add-on. If you are interested,…

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## [issue about converting VTK 5.0.3 codes to VTK 9.0.1.](https://discourse.vtk.org/t/issue-about-converting-vtk-5-0-3-codes-to-vtk-9-0-1/5875)

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**Author:** [@Hyunwoo\_Kim](https://discourse.vtk.org/u/Hyunwoo_Kim)\
**Replies:** 1\
**Last updated:** [May 27, 2021, 2:46pm UTC](https://discourse.vtk.org/t/issue-about-converting-vtk-5-0-3-codes-to-vtk-9-0-1/5875 "2021-05-27T14:46:59Z")

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Hi, I have an old project which uses VTK 5.0.3 version. And I’d like to make that version up to date. Therefore, I’m trying to convert VTK 5.0.3 codes to VTK 9.0.1. However, I’m struggling with two classes that were …

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## [Python wrapping is slow on Windows](https://discourse.vtk.org/t/python-wrapping-is-slow-on-windows/5862)

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**Author:** [@lassoan](https://discourse.vtk.org/u/lassoan)\
**Replies:** 18\
**Last updated:** [May 28, 2021, 11:34pm UTC](https://discourse.vtk.org/t/python-wrapping-is-slow-on-windows/5862 "2021-05-28T23:34:50Z")

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We use VTK’s Python wrapper for VTK classes in 3D Slicer and we find that on Windows it can take several minutes to generate the hierarchy files for each larger library. If we change a header file at lower level, hierarc…

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## [Upsample vtkPolyData](https://discourse.vtk.org/t/upsample-vtkpolydata/5865)

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**Author:** [@rijobro](https://discourse.vtk.org/u/rijobro)\
**Replies:** 3\
**Last updated:** [May 26, 2021, 12:31pm UTC](https://discourse.vtk.org/t/upsample-vtkpolydata/5865 "2021-05-26T12:31:59Z")

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I have a set of 3d coordinates and their triangulations, which have been pre-computed and this is the start of my pipeline. I also have a colour that corresponds to each of these points. I can visualise the surface as ex…

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## [Client-Server of Python Server Menu](https://discourse.vtk.org/t/client-server-of-python-server-menu/5772)

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**Author:** [@Luis\_Carlos\_Carneiro](https://discourse.vtk.org/u/Luis_Carlos_Carneiro)\
**Replies:** 13\
**Last updated:** [May 25, 2021, 2:55pm UTC](https://discourse.vtk.org/t/client-server-of-python-server-menu/5772 "2021-05-25T14:55:44Z")

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Dear All, I am using the example web-project-templates-master that replicate an OpenGL window in the Python server side in a web browser client side. Now, if I want to create a menu with buttons in the server side (Pyth…

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## [SSAA and FXAA not working](https://discourse.vtk.org/t/ssaa-and-fxaa-not-working/411)

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**Author:** [@chuan](https://discourse.vtk.org/u/chuan)\
**Replies:** 4\
**Last updated:** [May 24, 2021, 12:14pm UTC](https://discourse.vtk.org/t/ssaa-and-fxaa-not-working/411 "2021-05-24T12:14:23Z")

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Hi experts, I’m using vtk 8.1 and am having a little bit of a trouble getting anti-aliasing working. When using the FXAA approach, the graphic remains the same regardless of the FXAA options I pass to the renderer. v…

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## [I did change polydata of actor but suddenly show old model when I interact after change](https://discourse.vtk.org/t/i-did-change-polydata-of-actor-but-suddenly-show-old-model-when-i-interact-after-change/5851)

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**Author:** [@ChiShouWu](https://discourse.vtk.org/u/ChiShouWu)\
**Replies:** 0\
**Last updated:** [May 24, 2021, 5:49am UTC](https://discourse.vtk.org/t/i-did-change-polydata-of-actor-but-suddenly-show-old-model-when-i-interact-after-change/5851 "2021-05-24T05:49:11Z")

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I did change polydata of actor like this mapper-\>setInputData(newPolydata); actor-\>setMapper(mapper); renderer-\>render(); But when I interact with my actor after change, it show as image below. How to fix it?

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## [Discussion on vtkSmpTools improvement](https://discourse.vtk.org/t/discussion-on-vtksmptools-improvement/5432)

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**Author:** [@Timothee\_Couble](https://discourse.vtk.org/u/Timothee_Couble)\
**Replies:** 16\
**Last updated:** [May 21, 2021, 3:37pm UTC](https://discourse.vtk.org/t/discussion-on-vtksmptools-improvement/5432 "2021-05-21T15:37:14Z")

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Greetings, As part of an internship at Kitware, I’m going to work on improving vtk SMP tools. And we would like to engage the broader VTK community for ideas and feedback. The main goal of this work is to support VTK-m…

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## [wrapping vtk filters outside source](https://discourse.vtk.org/t/wrapping-vtk-filters-outside-source/5800)

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**Author:** [@marcwang](https://discourse.vtk.org/u/marcwang)\
**Replies:** 9\
**Last updated:** [May 20, 2021, 2:41am UTC](https://discourse.vtk.org/t/wrapping-vtk-filters-outside-source/5800 "2021-05-20T02:41:25Z")

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Hi. I implemented my own c++ filters but I would like to wrap them the same way vtk does in python. I saw this nabble post. Unfortunately, I think it’s a little out of date. The macro vtk\_wrap\_python3 doesn’t seem to e…

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## [VTK\_PYTHON\_OPTIONAL\_LINK](https://discourse.vtk.org/t/vtk-python-optional-link/484)

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**Author:** [@amaclean](https://discourse.vtk.org/u/amaclean)\
**Replies:** 8\
**Last updated:** [May 18, 2021, 10:21pm UTC](https://discourse.vtk.org/t/vtk-python-optional-link/484 "2021-05-18T22:21:24Z")

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In Windows using Anaconda Python 3.7.1, I had to switch this off in order to get a build. I was getting the following error: LINK : fatal error LNK1104: cannot open file 'python37.lib' It relates to this commit: Merge…

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## [Do we want to support GPU backend in the SMPTools?](https://discourse.vtk.org/t/do-we-want-to-support-gpu-backend-in-the-smptools/5802)

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**Author:** [@Timothee\_Couble](https://discourse.vtk.org/u/Timothee_Couble)\
**Replies:** 7\
**Last updated:** [May 18, 2021, 5:00pm UTC](https://discourse.vtk.org/t/do-we-want-to-support-gpu-backend-in-the-smptools/5802 "2021-05-18T17:00:16Z")

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Hi everyone, We are currently trying to integrate VTKm as a new SMPTools backend with @Charles\_Gueunet. (MR-7823). We realized we couldn’t use the “standard” version of VTKm (with GPU backends) for this work. The GPU b…

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## [vtk gitlab repo unreachable - just for me](https://discourse.vtk.org/t/vtk-gitlab-repo-unreachable-just-for-me/5675)

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**Author:** [@marcwang](https://discourse.vtk.org/u/marcwang)\
**Replies:** 6\
**Last updated:** [May 17, 2021, 4:47pm UTC](https://discourse.vtk.org/t/vtk-gitlab-repo-unreachable-just-for-me/5675 "2021-05-17T16:47:00Z")

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I would like know if anybody else had and managed to solve the same issue. For some reason, the gitlab kitware website is unreachable using my homes internet. The website is definitely not down since isItDownOrJustMe web…

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## [ParaView 5.9.0 2D plots are corrupted (regression, caused by bug in VTK shader)](https://discourse.vtk.org/t/paraview-5-9-0-2d-plots-are-corrupted-regression-caused-by-bug-in-vtk-shader/5778)

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**Author:** [@a2leexx](https://discourse.vtk.org/u/a2leexx)\
**Replies:** 2\
**Last updated:** [May 17, 2021, 9:25am UTC](https://discourse.vtk.org/t/paraview-5-9-0-2d-plots-are-corrupted-regression-caused-by-bug-in-vtk-shader/5778 "2021-05-17T09:25:05Z")

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System information OS: Fedora Workstation 34 GPU: NVIDIA Corporation GM107M \[GeForce GTX 860M\] / Intel® HD Graphics 4600 (HSW GT2) Kernel version: 5.11.16 Mesa version: 21.0.3 X.Org Server 1.20.11 GNOME 40.0.0 Issue st…

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## [VTK Examples - Graph Testing](https://discourse.vtk.org/t/vtk-examples-graph-testing/5561)

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**Author:** [@amaclean](https://discourse.vtk.org/u/amaclean)\
**Replies:** 7\
**Last updated:** [May 16, 2021, 6:16am UTC](https://discourse.vtk.org/t/vtk-examples-graph-testing/5561 "2021-05-16T06:16:48Z")

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I have come across an interesting discrepancy in testing vtk-examples. The following five tests all pass in Windows but fail in Linux: ConstructGraph EdgeWeights RandomGraphSource ScaleVertices SideBySideGraphs These…

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## [compile error building master with intel compiler](https://discourse.vtk.org/t/compile-error-building-master-with-intel-compiler/5708)

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**Author:** [@andreasbuykx](https://discourse.vtk.org/u/andreasbuykx)\
**Replies:** 8\
**Last updated:** [May 15, 2021, 8:41pm UTC](https://discourse.vtk.org/t/compile-error-building-master-with-intel-compiler/5708 "2021-05-15T20:41:23Z")

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I’m trying to build master on centos-7 with intel icc (ICC) 19.1.1.217 20200306 and I get this compile error: Filters/Sources/vtkPlaneSource.cxx(405): error: more than one instance of overloaded function "abs" matches t…

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## [vtkXYZMolReader](https://discourse.vtk.org/t/vtkxyzmolreader/5761)

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**Author:** [@mwestphal](https://discourse.vtk.org/u/mwestphal)\
**Replies:** 1\
**Last updated:** [May 11, 2021, 10:34pm UTC](https://discourse.vtk.org/t/vtkxyzmolreader/5761 "2021-05-11T22:34:16Z")

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There is .xyz molecule reader in VTK. It looks like the older one (vtkXYZMolReader) has less feature and is less tested than the newer one (vtkXYZMolReader2). https://gitlab.kitware.com/vtk/vtk/-/merge\_requests/7954#no…

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## [How does VTK implement model error detection and repair?](https://discourse.vtk.org/t/how-does-vtk-implement-model-error-detection-and-repair/5731)

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**Author:** [@Koly](https://discourse.vtk.org/u/Koly)\
**Replies:** 3\
**Last updated:** [May 10, 2021, 6:13am UTC](https://discourse.vtk.org/t/how-does-vtk-implement-model-error-detection-and-repair/5731 "2021-05-10T06:13:59Z")

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How does VTK implement model error detection and repair? I want to implement the function that is checking bad edges、holes、Bad triangle（including bad orientation、intersections、Overlap）and repairing them. How VTK to do i…

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## [Render time in Slicer vs in python code](https://discourse.vtk.org/t/render-time-in-slicer-vs-in-python-code/5639)

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**Author:** [@tzodge](https://discourse.vtk.org/u/tzodge)\
**Replies:** 5\
**Last updated:** [May 8, 2021, 10:17am UTC](https://discourse.vtk.org/t/render-time-in-slicer-vs-in-python-code/5639 "2021-05-08T10:17:34Z")

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I am trying to generate DRR of a CT using python code. I am also using Slicer to get an idea of the approximate idea of the transfer function. I observered that just ther rendering part of my code (only the line renWin.…

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## [Clipping on UniformGrid (Color errors)](https://discourse.vtk.org/t/clipping-on-uniformgrid-color-errors/5724)

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**Author:** [@Guillaume\_Gillet](https://discourse.vtk.org/u/Guillaume_Gillet)\
**Replies:** 0\
**Last updated:** [May 7, 2021, 8:22am UTC](https://discourse.vtk.org/t/clipping-on-uniformgrid-color-errors/5724 "2021-05-07T08:22:32Z")

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So i’m coming here because i’m actually working on performance enhancement, and i’m now asked to add clipping to my uniformgrid exampls, but i’m facing two problems, if i use the raw grid and vtkClipDataSet i have my col…

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## [CMAKE Generation issue in Ubuntu](https://discourse.vtk.org/t/cmake-generation-issue-in-ubuntu/5687)

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**Author:** [@Homersbm](https://discourse.vtk.org/u/Homersbm)\
**Replies:** 4\
**Last updated:** [May 3, 2021, 12:59pm UTC](https://discourse.vtk.org/t/cmake-generation-issue-in-ubuntu/5687 "2021-05-03T12:59:49Z")

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I am having trouble generating cmake files in ubuntu. Can someone help with the Compatibility metrics of the various vtx versions VTK Version G++ version Cmake Version 9 -----------?-----------------------? 8…

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## [Making an arcball camera in vtk python](https://discourse.vtk.org/t/making-an-arcball-camera-in-vtk-python/5658)

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**Author:** [@Kiordestruk\_k](https://discourse.vtk.org/u/Kiordestruk_k)\
**Replies:** 6\
**Last updated:** [May 1, 2021, 3:45am UTC](https://discourse.vtk.org/t/making-an-arcball-camera-in-vtk-python/5658 "2021-05-01T03:45:10Z")

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Hello, I am trying to modify the Rotate() function of vtkInteractorStyleTrackballCamera in order to obtain an arcball camera instead of a trackball camera. The advantage of arcball camera is path invariance, as describ…

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## [vtkOpenGLSphereMapper not working (or perhaps not understood how it works)](https://discourse.vtk.org/t/vtkopenglspheremapper-not-working-or-perhaps-not-understood-how-it-works/5665)

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**Author:** [@Guillaume\_Gillet](https://discourse.vtk.org/u/Guillaume_Gillet)\
**Replies:** 0\
**Last updated:** [April 29, 2021, 12:42pm UTC](https://discourse.vtk.org/t/vtkopenglspheremapper-not-working-or-perhaps-not-understood-how-it-works/5665 "2021-04-29T12:42:12Z")

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So i wanted to make some memory used and time of rendering tests with 3D points, to display them i needed them to be spheres, i first used the glyph3d Filter but it turns out when you go over a million points it takes wa…

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## [Hole in a hollow cylinder](https://discourse.vtk.org/t/hole-in-a-hollow-cylinder/5597)

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**Author:** [@Anish\_Basnet](https://discourse.vtk.org/u/Anish_Basnet)\
**Replies:** 5\
**Last updated:** [April 26, 2021, 7:59am UTC](https://discourse.vtk.org/t/hole-in-a-hollow-cylinder/5597 "2021-04-26T07:59:22Z")

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Hello everyone, I have created a disk by cutting a plane source with 2 cylinders. Then created a Hollow cylinder using an Extrusion filter. When I tried to cut a hole in the cylinder using vtkCylinder, it doesn’t work. …

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## [Tell me (if you can) why I shouldn't worry about the dashboards](https://discourse.vtk.org/t/tell-me-if-you-can-why-i-shouldnt-worry-about-the-dashboards/5610)

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**Author:** [@will.schroeder](https://discourse.vtk.org/u/will.schroeder)\
**Replies:** 9\
**Last updated:** [April 22, 2021, 8:30pm UTC](https://discourse.vtk.org/t/tell-me-if-you-can-why-i-shouldnt-worry-about-the-dashboards/5610 "2021-04-22T20:30:23Z")

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The VTK dashboards are scary. I know a lot is going on, but the current state worries me. Should we go into rapid response mode and fix this ? I see several sloppy warnings/errors that have been around for a while, at a …

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## [What is VTK's minimum C++ standard?](https://discourse.vtk.org/t/what-is-vtks-minimum-c-standard/5601)

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**Author:** [@Dave\_DeMarle](https://discourse.vtk.org/u/Dave_DeMarle)\
**Replies:** 2\
**Last updated:** [April 21, 2021, 2:17pm UTC](https://discourse.vtk.org/t/what-is-vtks-minimum-c-standard/5601 "2021-04-21T14:17:38Z")

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Hey folks! What is VTK’s minimum supported C++ version these days? Is it c++14 yet or still c++11. thanks

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## [VTK9 blank rendering window](https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588)

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**Author:** [@marcomusy](https://discourse.vtk.org/u/marcomusy)\
**Replies:** 2\
**Last updated:** [April 21, 2021, 10:12am UTC](https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588 "2021-04-21T10:12:20Z")

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I finally found out that If I set in my nvidia-settings “Override Application Settings” then I get a completely blank rendering window: my system: vtk version : 9.0.1 python version : 3.8.5 (default, Sep …

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## [Reading voxels from Structured Points](https://discourse.vtk.org/t/reading-voxels-from-structured-points/5591)

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**Author:** [@ABWassim](https://discourse.vtk.org/u/ABWassim)\
**Replies:** 3\
**Last updated:** [April 21, 2021, 9:12am UTC](https://discourse.vtk.org/t/reading-voxels-from-structured-points/5591 "2021-04-21T09:12:52Z")

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Hello everyone, I’ve been using Binvox which is a tool that voxelizes 3D models and outputs the result in a Binary Structured Points VTK file. I wanted to some treatments on the voxels, so I used the vtkStructuredPoints…

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## [Win CE](https://discourse.vtk.org/t/win-ce/5596)

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**Author:** [@toddy](https://discourse.vtk.org/u/toddy)\
**Replies:** 1\
**Last updated:** [April 21, 2021, 3:35am UTC](https://discourse.vtk.org/t/win-ce/5596 "2021-04-21T03:35:44Z")

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I see a few $ifdef \_WIN32\_WCE in the source code. Does VTK still support Win CE?

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