Vector3.project

`Vector3.Project` is a method in Unity's `Vector3` class that projects a `Vector3` onto another `Vector3`.

The method takes two parameters:
- `vector`: The `Vector3` to project.
- `onNormal`: The `Vector3` onto which the `vector` will be projected.

The method returns a `Vector3` that represents the projection of `vector` onto `onNormal`. The returned vector is the component of `vector` that is parallel to `onNormal`.

Here's an example usage of `Vector3.Project` in Unity:

Vector3 vectorToProject = new Vector3(1, 2, 3);
Vector3 projectionNormal = new Vector3(0, 1, 0); // projecting onto the y-axis

Vector3 projectedVector = Vector3.Project(vectorToProject, projectionNormal);

Debug.Log(projectedVector); // Output: (0, 2, 0)

In this example, we project the `vectorToProject` onto the `projectionNormal`, which is the y-axis. The resulting `projectedVector` is (0, 2, 0), which is the component of `vectorToProject` that is parallel to the y-axis.