Version: 2020.1
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  • C#

NavMesh.FindClosestEdge

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public static bool FindClosestEdge(Vector3 sourcePosition, out AI.NavMeshHit hit, int areaMask);

Parameters

sourcePositionThe origin of the distance query.
hitHolds the properties of the resulting location.
areaMaskA bitfield mask specifying which NavMesh areas can be passed when finding the nearest edge.

Returns

bool True if a nearest edge is found.

Description

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

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.

// MeasureSpace
using UnityEngine;
using UnityEngine.AI;

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); } } }

public static bool FindClosestEdge(Vector3 sourcePosition, out AI.NavMeshHit hit, AI.NavMeshQueryFilter filter);

Parameters

sourcePositionThe origin of the distance query.
hitHolds the properties of the resulting location.
filterA filter specifying which NavMesh areas can be passed when finding the nearest edge.

Returns

bool True if a nearest edge is found.

Description

Locate the closest NavMesh edge from a point on the NavMesh, subject to the constraints of the filter argument.

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.

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