float magnitude = Vector3.Project(new Vector3(oriPos.x, 0, oriPos.z), bendVector).magnitude;

这段代码使用了 Unity 的 `Vector3.Project` 方法来计算一个向量在另一个向量上的投影，并获取投影向量的长度（magnitude）。

float magnitude = Vector3.Project(new Vector3(oriPos.x, 0, oriPos.z), bendVector).magnitude;

具体来说，这段代码中：
- `new Vector3(oriPos.x, 0, oriPos.z)` 创建了一个新的向量，其 x 和 z 分量与 `oriPos` 向量相同，而 y 分量设置为 0。
- `Vector3.Project` 方法接受两个向量作为参数，第一个参数是待投影的向量，第二个参数是用于投影的目标向量（在这里是 `bendVector`）。
- `Vector3.Project` 方法返回一个新的向量，表示待投影向量在目标向量上的投影。
- 最后，通过获取投影向量的长度（magnitude）来计算投影的大小，并将结果赋值给 `magnitude` 变量。

这段代码的目的是计算 `oriPos` 向量在 `bendVector` 上的投影，并获取投影向量的长度。这个长度可以用于后续的计算或判断。

相关问题

Vector3.Project

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

The method takes two `Vector3` parameters: `vector` and `onNormal`. `vector` is the vector you want to project, and `onNormal` is the vector you want to project onto.

The method returns a `Vector3` that represents the projection of `vector` onto `onNormal`. The projection is calculated by taking the dot product of `vector` and `onNormal`, and dividing the result by the square magnitude of `onNormal`. The resulting vector is then multiplied by `onNormal`.

Here's an example of how to use `Vector3.Project`:

Vector3 vector = new Vector3(1, 2, 3);
Vector3 onNormal = new Vector3(0, 1, 0);
Vector3 projection = Vector3.Project(vector, onNormal);

In this example, `vector` is projected onto the `y` axis by passing in `(0, 1, 0)` as the `onNormal` parameter. The resulting `projection` vector would be `(0, 2, 0)`, since the projection of `vector` onto the `y` axis would have no `x` or `z` component.

vector3.project

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

The method takes two `Vector3` parameters: `vector` and `onNormal`. `vector` is the vector you want to project, and `onNormal` is the vector you want to project onto.

The method returns a `Vector3` that represents the projection of `vector` onto `onNormal`. The projection is calculated by taking the dot product of `vector` and `onNormal`, and dividing the result by the square magnitude of `onNormal`. The resulting vector is then multiplied by `onNormal`.

Here's an example of how to use `Vector3.Project`:

Vector3 vector = new Vector3(1, 2, 3);
Vector3 onNormal = new Vector3(0, 1, 0);
Vector3 projection = Vector3.Project(vector, onNormal);

In this example, `vector` is projected onto the `y` axis by passing in `(0, 1, 0)` as the `onNormal` parameter. The resulting `projection` vector would be `(0, 2, 0)`, since the projection of `vector` onto the `y` axis would have no `x` or `z` component.