如何在wpf中显示每个3d点的法线 [英] How to show normal to each 3d point in wpf

问题描述

我们可以在wpf中使用ScreenSpaceLine3d控件加入3d点的集合。如何根据给定的i，j和k值对应点绘制每个3d点的法线，以便在UI中向用户显示每个点的方向。

解决方案

这在数学上并不合理。无法定义点或矢量的法线。您可以定义曲面的法线（以及更高维度的对象）。如果你必须在某个点上平行于表面的非共线矢量，则法线将是这两个矢量的矢量积。

-SA

We can join collection of 3d points using ScreenSpaceLine3d control in wpf. How to draw a normal to each 3d point based on given i,j and k values corresponding points so that direction of each points are shown to user in UI.

解决方案

This is not mathematically sensible. A normal to a point or a vector cannot be defined. You can define a normal to a surface (and objects of higher dimensions). If you have to non-collinear vectors parallel to the surface at some point, the normal will be the vector product of those two vectors.

—SA

这篇关于如何在wpf中显示每个3d点的法线的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！