可选是否打开矩阵变换，支持xyz三种朝向

using UnityEngine;using System.Collections;using System.Collections.Generic;public class CapsuleDetection : MonoBehaviour{    public enum Axis { X, Y, Z }    public Transform comparePointTransform;    public float radius;    public float height;    public Axis axis;    public bool enableMatrix;    bool ExecuteDetection()    {        if (comparePointTransform == null) return false;        var result = false;        var axisIndex = (int)axis;        var comparePoint = comparePointTransform.position;        var pointA = Vector3.zero;        var pointB = Vector3.zero;        if (enableMatrix)        {            comparePoint = transform.InverseTransformPoint(comparePoint);            pointA[axisIndex] -= height - radius;            pointB[axisIndex] += height - radius;        }        else        {            pointA = transform.position;            pointB = transform.position;            pointA[axisIndex] -= height - radius;            pointB[axisIndex] += height - radius;        }        if (comparePoint[axisIndex] < pointA[axisIndex])        {            if (Vector3.Distance(comparePoint, pointA) <= radius)            {                result = true;            }        }        else if (comparePoint[axisIndex] > pointB[axisIndex])        {            if (Vector3.Distance(comparePoint, pointB) <= radius)            {                result = true;            }        }        else        {            var tmpPos = enableMatrix ? Vector3.zero : transform.position;            tmpPos[axisIndex] = comparePoint[axisIndex];            if (Vector3.Distance(comparePoint, tmpPos) <= radius)            {                result = true;            }        }        return result;    }    void OnDrawGizmos()    {        var color = Color.blue;        if (ExecuteDetection())        {            color = Color.red;        }        var axisIndex = (int)axis;        var pos1 = Vector3.zero;        var pos2 = Vector3.zero;        if (enableMatrix)        {            Gizmos.matrix = transform.localToWorldMatrix;            pos1[axisIndex] -= height;            pos2[axisIndex] += height;        }        else        {            pos1 = transform.position;            pos2 = transform.position;            pos1[axisIndex] -= height;            pos2[axisIndex] += height;        }        DebugExtension.DrawCapsule(pos1, pos2, color, radius);    }}

 

绘制胶囊体使用DebugExtension插件，在资源商店可以免费下载