如何在 OpenCASCADE 中获取与两个 gp_Dir 正交的 gp_Dir
OCCUtils 提供了计算两个方向的正交方向的便捷函数：
direction_example.cpp
#include <occutils/Direction.hxx>
using namespace OCCUtils;
gp_Dir dir1 = /* ... */;
gp_Dir dir2 = /* ... */;
gp_Dir orthogonalDirection = Direction::Orthogonal(dir1, dir2);如果你不能使用 OCCUtils，这里是手动执行的代码：
gp_dir_orthogonal_example.cpp
gp_Dir orthogonalDirection = dir1.Crossed(dir2);使用的函数称为 Crossed()，因为使用的数学运算是两个方向向量之间的叉积。
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C/C++, OpenCASCADE
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