Vector3.Project

Description

別のベクトルにベクトルを投影します

ベクトルの投影を理解するには、 onNormal がその方向の直線上に静止していると想像してみてください。 ラインは vector の先の位置から最も近い位置のどこかです。 投影は onNormal に再スケーリングされライン上の位置に到達します。 /onNormal/ がほぼ0である場合、この関数は0ベクトルを返します。 An example of the usage of projection is a rail-mounted gun that should slide so that it gets as close as possible to a target object. The projection of the target heading along the direction of the rail can be used to move the gun by applying a force to a rigidbody, say.

	function Slide(target: Transform, railDirection: Vector3) {
		var heading = target.position - transform.position;
		var force = Vector3.Project(heading, railDirection);
		rigidbody.AddForce(force);
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Slide(Transform target, Vector3 railDirection) {
        Vector3 heading = target.position - transform.position;
        Vector3 force = Vector3.Project(heading, railDirection);
        rigidbody.AddForce(force);
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Slide(target as Transform, railDirection as Vector3) as void:
		heading as Vector3 = (target.position - transform.position)
		force as Vector3 = Vector3.Project(heading, railDirection)
		rigidbody.AddForce(force)