Question

JavaScript =>public static function RaycastAll(ray: Ray, maxDistance: float = Mathf.Infinity, layerMask: int = DefaultRaycastLayers, queryTriggerInteraction: QueryTriggerInteraction = QueryTriggerInteraction.UseGlobal): RaycastHit[];

C# => public static RaycastHit[] RaycastAll(Ray ray, float maxDistance = Mathf.Infinity, int layerMask = DefaultRaycastLayers, QueryTriggerInteraction queryTriggerInteraction = QueryTriggerInteraction.UseGlobal);

Parameters 参数

ray	The starting point and direction of the ray. 带有开始点和方向的射线。
maxDistance	The max distance the rayhit is allowed to be from the start of the ray. 从射线开始允许投射的最大距离。
layerMask	A Layer mask that is used to selectively ignore colliders when casting a ray. 选择投射的层蒙版。
queryTriggerInteraction	Specifies whether this query should hit Triggers. 指定是否查询碰到触发器。

Description 描述

Casts a ray through the scene and returns all hits. Note that order is not guaranteed.

在场景投射一条射线并返回所有碰撞。注意不保证顺序。

JavaScript:

#pragma strict
function Update() {
	var hits: RaycastHit[];
	hits = Physics.RaycastAll(transform.position, transform.forward, 100.0F);
	for (var i: int = 0; i < hits.Length; i++) {
		var hit: RaycastHit = hits[i];
		var rend: Renderer = hit.transform.GetComponent.<Renderer>();
		if (rend) {
			// to use a transparent shader.
			rend.material.shader = Shader.Find("Transparent/Diffuse");
			var tempColor: Color = rend.material.color;
			tempColor.a = 0.3F;
			rend.material.color = tempColor;
		}
	}
}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    void Update() {
        RaycastHit[] hits;
        hits = Physics.RaycastAll(transform.position, transform.forward, 100.0F);
 
        for (int i = 0; i < hits.Length; i++) {
            RaycastHit hit = hits[i];
            Renderer rend = hit.transform.GetComponent<Renderer>();
 
            if (rend) {
            	// Change the material of all hit colliders
				// to use a transparent shader.
                rend.material.shader = Shader.Find("Transparent/Diffuse");
                Color tempColor = rend.material.color;
                tempColor.a = 0.3F;
                rend.material.color = tempColor;
            }
        }
    }
}

Notes: Raycasts will not detect colliders for which the raycast origin is inside the collider. If you move colliders from scripting or by animation, there needs to be at least one FixedUpdate executed so that the physics library can update it's data structures, before a Raycast will hit the collider at it's new position.

注意，射线投射不会从碰撞器内部检测碰撞。如果你用脚本或者动画移动碰撞器，至少需要一个在FixedUpdate来执行物理库更新数据结构，Raycast在它的新位置之前碰到碰撞器。

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JavaScript =>public static function RaycastAll(origin: Vector3, direction: Vector3, maxDistance: float = Mathf.Infinity, layermask: int = DefaultRaycastLayers, queryTriggerInteraction: QueryTriggerInteraction = QueryTriggerInteraction.UseGlobal): RaycastHit[];

C# => public static RaycastHit[] RaycastAll(Vector3 origin, Vector3 direction, float maxDistance = Mathf.Infinity, int layermask = DefaultRaycastLayers, QueryTriggerInteraction queryTriggerInteraction = QueryTriggerInteraction.UseGlobal);

Parameters 参数

origin	The starting point of the ray in world coordinates. 射线的开始点。
direction	The direction of the ray. 射线的方向。
maxDistance	The max distance the rayhit is allowed to be from the start of the ray. 从射线开始允许投射的最大距离。
layermask	A Layer mask that is used to selectively ignore colliders when casting a ray. 选择投射的层蒙版。
queryTriggerInteraction	Specifies whether this query should hit Triggers. 指定是否查询碰到触发器。

Description 描述

See Also: Raycast.

Physics