【VTK】坐标系入门

最新推荐文章于 2025-04-19 16:35:44 发布

theArcticOcean

最新推荐文章于 2025-04-19 16:35:44 发布

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分类专栏： C、C++学习笔记 VTK 文章标签： CPP VTK Coordinate

本文链接：https://blog.youkuaiyun.com/theArcticOcean/article/details/83217811

本文介绍了VTK支持的不同坐标系统，包括DISPLAY、NORMALIZED DISPLAY、VIEWPORT、NORMALIZED VIEWPORT、VIEW和WORLD，并详细讲解了坐标转换，特别是在vtkViewport中如何进行世界坐标到Display坐标的转换。通过一个实验展示了转换过程，帮助读者深入理解VTK中的三维坐标系统。

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vtkCoordinate and Coordinate Systems

以下英文介绍内容出自《VTKUsersGuide.pdf》

The Visualization Toolkit supports several different coordinate systems, and the class vtkCoordinate manages transformations between them. The supported coordinate systems are as follows.

DISPLAY — x-y pixel values in the (rendering) window. (Note that vtkRenderWindow is a subclass of vtkWindow). The origin is the lower-left corner (which is true for all 2D coordinate systems described below).
NORMALIZED DISPLAY — x-y (0,1) normalized values in the window.
VIEWPORT — x-y pixel values in the viewport (or renderer—a sub class of vtkViewport)
NORMALIZED VIEWPORT — x-y(0,1) normalized values in viewport
VIEW — x-y-z(-1,1) values in camera coordinates (z is depth)
WORLD — x-y-z global coordinatevalue
USERDEFINED - x-y-z in user-defined sp