vtk.vtkRender() 导致段错误:11 [英] vtk.vtkRender() causes seg fault:11

问题描述

我有一个 python 脚本，它不是我写的，它使用了 vtk 模块.它适用于我的旧 iMac 和我的 Linux 机器.在安装了 OS X Mavericks 的 Macbook Pro 上尝试时，在渲染过程中出现段错误.我已经追踪到调用 vtkRender() 方法的错误，该方法导致脚本因 seg fault 11 崩溃.我真的不知道如何进一步找出错误的确切原因(例如，怎么做我使用 pdb 进入方法调用?)，有什么想法吗?

I have a python script, which I didn't write, that utilises the vtk module. It has worked on my old iMac and on my Linux machines. Trying it on my Macbook Pro with OS X Mavericks installed I get a seg fault during rendering. I have tracked down the error to a call to the vtkRender() method which causes the script to crash with seg fault 11. I literally have no idea how to go further and find out the exact cause of the bug (for instance, how do I step into a method call using pdb?), any ideas?

最小的程序崩溃如下:

Enthought Canopy Python 2.7.3 | 64-bit | (default, Aug  8 2013, 05:37:06) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import vtk
>>> test = vtk.vtkRenderer()
>>> test.Render()
Segmentation fault: 11

更新:我在 VirtualBox 上安装了 Ubuntu，并且在上面的示例中遇到了相同的段错误，但是我的使用 vtk 模块的 python 脚本工作得很好.

Update: I installed Ubuntu on VirtualBox and get the same seg fault for the above example, however my python script utilising the vtk modules works just fine.

所以这似乎是使用 EPD 和 OS X Mavericks 提供的 VTK 包的问题.知道如何解决这个问题吗?我删除了 VTK 的所有痕迹并尝试从源代码安装，但在这种情况下，我遇到了各种各样的问题，只是让 VTK 导入.

So this seems to be a problem using the VTK package provided with EPD and OS X Mavericks. Any idea how to fix this? I deleted all trace of VTK and tried installing from source but I'm having all manner of problems just getting VTK to import in this case.

更新:

通过向脚本中的 VTK 代码添加一些额外的样板，我可以让它再次工作.确实很奇怪的行为.在具有相同代码和库的 Ubuntu 中工作正常，但在 Mac OS X 上它会出现分段错误，除非我向渲染对象添加一些 .Initialize() 方法调用和其他方法调用.

By adding some extra boiler-plate to the VTK code in the script I can get it to work again. Very strange behaviour indeed. Works fine in Ubuntu with identical code and libraries, yet on Mac OS X it seg faults unless I add some .Initialize() method calls and others to the rendering object.

推荐答案

在渲染之前，您应该创建一个渲染窗口并添加渲染器.另外，调用 render-window 的 Render() 方法，而不是渲染器的方法.

You should create a render-window and add the renderer to it before rendering. Also, call the render-window's Render() method, not the renderer's.

import vtk
rr = vtkRenderer()
rw = vtkRenderWindow()
rw.AddRenderer(rr)
rw.Render()

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