Question

JavaScript => public static function FindClosestEdge(sourcePosition: Vector3, out hit: NavMeshHit, areaMask: int): bool;
C# => public static bool FindClosestEdge(Vector3 sourcePosition, out NavMeshHit hit, int areaMask);

Parameters 参数

sourcePosition	The origin of the distance query. 查询起始距离。
hit	Holds the properties of the resulting location. 拥有属性的产生位置。
areaMask	A bitfield mask specifying which NavMesh areas can be passed when finding the nearest edge. 当寻找最近边缘时遮挡指定哪个导航网格区域可以通过。

Returns 返回

bool True if a nearest edge is found.
发现最近边缘为true。

Description 描述

Locate the closest NavMesh edge from a point on the NavMesh.

查找从导航网格上的点到最近的导航网格边缘。

The returned NavMeshHit object contains the position and details of the nearest point on the nearest edge of the navmesh. This can be used to query how much extra space there is around the agent.

返回的NavMeshHit对象包含导航网格最近的边缘上的位置和最近的点的细节。这可以用于查询围绕代理有多少额外空间。

JavaScript:

#pragma strict
// MeasureSpaceAround.cs
public class MeasureSpace extends MonoBehaviour {
	function DrawCircle(center: Vector3, radius: float, color: Color) {
		var prevPos: Vector3 = center + new Vector3(radius, 0, 0);
		for (var i: int = 0; i < 30; i++) {
			var angle: float = float(i + 1) / 30.0f * Mathf.PI * 2.0f;
			var newPos: Vector3 = center + new Vector3(Mathf.Cos(angle) * radius, 0, Mathf.Sin(angle) * radius);
			Debug.DrawLine(prevPos, newPos, color);
			prevPos = newPos;
		}
	}
	function Update() {
		var hit: NavMeshHit;
		if (NavMesh.FindClosestEdge(transform.position, hit, NavMesh.AllAreas)) {
			DrawCircle(transform.position, hit.distance, Color.red);
			Debug.DrawRay(hit.position, Vector3.up, Color.red);
		}
	}
}

C#:

// MeasureSpaceAround.cs
using UnityEngine;
using System.Collections;
public class MeasureSpace : MonoBehaviour {
	void DrawCircle(Vector3 center, float radius, Color color) {
		Vector3 prevPos = center + new Vector3(radius, 0, 0);
		for (int i = 0; i < 30; i++) {
			float angle = (float)(i+1) / 30.0f * Mathf.PI * 2.0f;
			Vector3 newPos = center + new Vector3(Mathf.Cos(angle)*radius, 0, Mathf.Sin(angle)*radius);
			Debug.DrawLine(prevPos, newPos, color);
			prevPos = newPos;
		}
	}
	void Update() {
		NavMeshHit hit;
		if (NavMesh.FindClosestEdge(transform.position, out hit, NavMesh.AllAreas)) {
			DrawCircle(transform.position, hit.distance, Color.red);
			Debug.DrawRay(hit.position, Vector3.up, Color.red);
		}
	}
}

mavmesh