Projection of a Point on a Plane
For point $$p$$ with position vector $$\vec p$$ and plane:
$$\vec r\cdot\vec n=d$$
the projection $$h$$ is:
$$\vec h=\vec p-\frac{\vec p\cdot\vec n-d}{|\vec n|^2}\vec n$$
Usage
- Used to find the perpendicular projection of a point onto a plane.
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