/// <summary>
/// 计算一个三角形的三个顶点 0：left，1:right，2:top
/// </summary>
/// <param name="inRange">x:底边长，y:高</param>
/// <returns>FMatrix3x3 0：left，1:right，2:top </returns>
public static Vector3[] GetTrianglePoints(FTransformData inTransData, Vector3 inRange)
{
Vector3 tFwdHalfDir = inTransData.Forward * inRange.y * 0.5f;
Vector3 tRightHalfDir = inTransData.Right * inRange.x * 0.5f;
Vector3[] res = new Vector3[3];
Vector3 left = inTransData.Location - tFwdHalfDir - tRightHalfDir;
Vector3 right = inTransData.Location - tFwdHalfDir + tRightHalfDir;
Vector3 top = inTransData.Location + tFwdHalfDir;
res[0] = left;
res[1] = right;
res[2] = top;
return(res);
}
/// <summary>
/// 检测碰撞
/// </summary>
public static List <Collider> OverlapColliders(EOverlapType inOverlapType, Vector3 inRange, FTransformData inTransData)
{
List <Collider> colliders = null;
switch (inOverlapType)
{
case EOverlapType.Sphere:
colliders = Physics.OverlapSphere(inTransData.Location, inRange.x).ToList();
break;
case EOverlapType.Box:
inRange.z *= 0.5f;
colliders = Physics.OverlapBox(inTransData.Location, inRange).ToList();
break;
case EOverlapType.Cylinder:
colliders = Physics.OverlapCapsule(inTransData.Location, inTransData.Location + inRange.y * Vector3.up, inRange.x).ToList();
break;
case EOverlapType.Sector:
Collider[] sectorTemps = Physics.OverlapSphere(inTransData.Location, inRange.x);
colliders = new List <Collider>();
foreach (Collider collider in sectorTemps)
{
if (Vector3.Dot(inTransData.Forward, (collider.transform.position - inTransData.Location).normalized) > inRange.y * 0.5f * Mathf.Deg2Rad)
{
colliders.Add(collider);
}
}
break;
case EOverlapType.Triangle:
Collider[] triangleTemps = Physics.OverlapSphere(inTransData.Location, Pythagorean(inRange.x * 0.5f, inRange.y * 0.5f));
// 0：left，1:right，2:top
Vector3[] trianglePoints = GetTrianglePoints(inTransData, inRange);
colliders = new List <Collider>();
foreach (Collider collider in colliders)
{
//三角形内满足2个条件：1.与前向量点乘>0；2.与后向量点乘<cos(夹角)
Vector3 dir1 = (collider.transform.position - inTransData.Location).normalized;
if (Vector3.Dot(inTransData.Forward, dir1) > 0)
{
Vector3 dir2 = (trianglePoints[0] - trianglePoints[2]).normalized;
Vector3 dir3 = (trianglePoints[1] - trianglePoints[2]).normalized;
float dot = Vector3.Dot(-inTransData.Forward, (collider.transform.position - trianglePoints[2]).normalized);
if (dot > 0 && dot < Vector3.Dot(dir2, dir3))
{
colliders.Add(collider);
}
}
}
break;
}
return(colliders);
}
/// <summary>
/// 检测碰撞
/// </summary>
public static List <T> OverlapComponents <T>(EOverlapType inOverlapType, Vector3 inRange, FTransformData inTransData) where T : Component
{
List <Collider> colliders = OverlapColliders(inOverlapType, inRange, inTransData);
List <T> res = new List <T>();
foreach (Collider collider in colliders)
{
T temp = collider.GetComponent <T>();
if (temp != null)
{
res.Add(temp);
}
}
colliders.Clear();
return(res);
}
