/// <summary>
/// 获取8个顶点，注意用完dispose
/// </summary>
/// <param name="self"></param>
/// <param name="realPos"></param>
/// <param name="realRot"></param>
/// <returns></returns>
public static ListComponent <Vector3> GetAllVertex(this OBBComponent self, Vector3 realPos, Quaternion realRot)
{
ListComponent <Vector3> res = ListComponent <Vector3> .Create();
for (float i = -0.5f; i < 0.5f; i++)
{
for (float j = -0.5f; j < 0.5f; j++)
{
for (float k = -0.5f; k < 0.5f; k++)
{
Vector3 temp = new Vector3(self.Scale.x * i, self.Scale.y * j, self.Scale.z * k);
temp = realPos + realRot * temp;
res.Add(temp);
}
}
}
return(res);
}
/// <summary>
/// 判断触发器是否在触发器移到指定位置后之相交
/// </summary>
/// <param name="trigger1"></param>
/// <param name="trigger2"></param>
/// <param name="pos1"></param>
/// <param name="rotation1"></param>
/// <param name="pos2"></param>
/// <param name="rotation2"></param>
/// <returns></returns>
public static bool IsInTrigger(this OBBComponent trigger1, OBBComponent trigger2, Vector3 pos1,
Quaternion rotation1, Vector3 pos2, Quaternion rotation2)
{
// Log.Info("判断OBB触发");
//第一种情况一方有一个点在对方内部即为触发
using (var list = trigger1.GetAllVertex(pos1, rotation1))
{
for (int i = 0; i < list.Count; i++)
{
if (IsPointInTrigger(trigger2, list[i], pos2, rotation2))
{
return(true);
}
}
}
using (var list = trigger2.GetAllVertex(pos2, rotation2))
{
for (int i = 0; i < list.Count; i++)
{
if (IsPointInTrigger(trigger1, list[i], pos1, rotation1))
{
return(true);
}
}
}
//第二种情况，没有点在对方内部，但边和对方面相交了
using (var list = trigger1.GetAllSide(pos1, rotation1))
{
for (int i = 0; i < list.Count; i++)
{
if (trigger2.IsRayInTrigger(list[i], pos2, rotation2))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// 获取12条边，注意用完dispose
/// </summary>
/// <param name="self"></param>
/// <param name="realPos"></param>
/// <param name="realRot"></param>
/// <returns></returns>
public static ListComponent <Ray> GetAllSide(this OBBComponent self, Vector3 realPos, Quaternion realRot)
{
ListComponent <Ray> res = ListComponent <Ray> .Create();
Vector3 temp = realPos + realRot * new Vector3(self.Scale.x, self.Scale.y, self.Scale.z);
Ray ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.left,
Distance = self.Scale.x
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.down,
Distance = self.Scale.y
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.back,
Distance = self.Scale.z
};
res.Add(ray);
temp = realPos + realRot * new Vector3(-self.Scale.x, -self.Scale.y, -self.Scale.z);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.right,
Distance = self.Scale.x
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.up,
Distance = self.Scale.y
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.forward,
Distance = self.Scale.z
};
res.Add(ray);
temp = realPos + realRot * new Vector3(-self.Scale.x, self.Scale.y, self.Scale.z);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.up,
Distance = self.Scale.y
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.forward,
Distance = self.Scale.z
};
res.Add(ray);
temp = realPos + realRot * new Vector3(self.Scale.x, self.Scale.y, -self.Scale.z);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.right,
Distance = self.Scale.x
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.up,
Distance = self.Scale.y
};
res.Add(ray);
temp = realPos + realRot * new Vector3(self.Scale.x, -self.Scale.y, self.Scale.z);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.right,
Distance = self.Scale.x
};
res.Add(ray);
ray = new Ray()
{
Start = temp,
Dir = realRot * Vector3.forward,
Distance = self.Scale.z
};
res.Add(ray);
return(res);
}
/// <summary>
/// 判断射线是否在触发器移到指定位置后之内
/// </summary>
/// <param name="self"></param>
/// <param name="ray"></param>
/// <param name="center"></param>
/// <param name="rotation"></param>
/// <returns></returns>
public static bool IsRayInTrigger(this OBBComponent self, Ray ray, Vector3 center, Quaternion rotation, out Vector3 hit)
{
hit = Vector3.zero;
//转换到模型空间
ray = Ray.WorldToModel(ray, rotation, center);
var xMax = self.Scale.x / 2;
var yMax = self.Scale.y / 2;
var zMax = self.Scale.z / 2;
//起点在范围内
if (-xMax <= ray.Start.x && ray.Start.x <= xMax && -yMax <= ray.Start.y && ray.Start.y <= yMax &&
-zMax <= ray.Start.z && ray.Start.z <= zMax)
{
hit = rotation * ray.Start + center;
return(true);
}
#region 方向向量只有一个轴有值
else if (ray.Dir.x == 0 && ray.Dir.y == 0 && ray.Dir.z != 0)
{
if (ray.Start.z < 0)
{
if (ray.Dir.z < 0)
{
return(false);
}
hit = new Vector3(ray.Start.x, ray.Start.y, -zMax);
}
else
{
if (ray.Dir.z > 0)
{
return(false);
}
hit = new Vector3(ray.Start.x, ray.Start.y, zMax);
}
hit = rotation * ray.Start + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(-xMax <= ray.Start.x && ray.Start.x <= xMax &&
-yMax <= ray.Start.y && ray.Start.y <= yMax);
}
else if (ray.Dir.x == 0 && ray.Dir.y != 0 && ray.Dir.z == 0)
{
if (ray.Start.y < 0)
{
if (ray.Dir.y < 0)
{
return(false);
}
hit = new Vector3(ray.Start.x, -yMax, ray.Start.z);
}
else
{
if (ray.Dir.y > 0)
{
return(false);
}
hit = new Vector3(ray.Start.x, yMax, ray.Start.z);
}
hit = rotation * ray.Start + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(-xMax <= ray.Start.x && ray.Start.x <= xMax &&
-zMax <= ray.Start.z && ray.Start.z <= zMax);
}
else if (ray.Dir.x != 0 && ray.Dir.y == 0 && ray.Dir.z == 0)
{
if (ray.Start.x < 0)
{
if (ray.Dir.x < 0)
{
return(false);
}
hit = new Vector3(-xMax, ray.Start.y, ray.Start.z);
}
else
{
if (ray.Dir.x > 0)
{
return(false);
}
hit = new Vector3(xMax, ray.Start.y, ray.Start.z);
}
hit = rotation * ray.Start + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(-yMax <= ray.Start.y && ray.Start.y <= yMax &&
-zMax <= ray.Start.z && ray.Start.z <= zMax);
}
#endregion
#region 方向向量有两个轴有值
else if (ray.Dir.x == 0 && ray.Dir.y != 0 && ray.Dir.z != 0)
{
//简化为平面直角坐标系
if (-xMax <= ray.Start.x && ray.Start.x <= xMax)
{
if (IsRayInTrigger2D(ray.Start.y, ray.Start.z, ray.Dir.y, ray.Dir.z, yMax, zMax, out var hit2d))
{
hit = new Vector3(ray.Start.x, hit2d.x, hit2d.y);
hit = rotation * ray.Start + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(true);
}
}
return(false);
}
else if (ray.Dir.x != 0 && ray.Dir.y == 0 && ray.Dir.z != 0)
{
//简化为平面直角坐标系
if (-yMax <= ray.Start.y && ray.Start.y <= yMax)
{
if (IsRayInTrigger2D(ray.Start.x, ray.Start.z, ray.Dir.x, ray.Dir.z, xMax, zMax, out var hit2d))
{
hit = new Vector3(hit2d.x, ray.Start.y, hit2d.y);
hit = rotation * ray.Start + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(true);
}
}
return(false);
}
else if (ray.Dir.x != 0 && ray.Dir.y != 0 && ray.Dir.z == 0)
{
//简化为平面直角坐标系
if (-zMax <= ray.Start.z && ray.Start.z <= zMax)
{
if (IsRayInTrigger2D(ray.Start.x, ray.Start.y, ray.Dir.x, ray.Dir.y, xMax, yMax, out var hit2d))
{
hit = new Vector3(hit2d.x, hit2d.y, ray.Start.z);
hit = rotation * ray.Start + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(true);
}
}
return(false);
}
#endregion
//正常情况
//判断3个面的投影是否都相交
if (!IsRayInTrigger2D(ray.Start.y, ray.Start.z, ray.Dir.y, ray.Dir.z, yMax, zMax, out var hit2d1))
{
return(false);
}
if (!IsRayInTrigger2D(ray.Start.x, ray.Start.z, ray.Dir.x, ray.Dir.z, xMax, zMax, out var hit2d2))
{
return(false);
}
if (!IsRayInTrigger2D(ray.Start.x, ray.Start.y, ray.Dir.x, ray.Dir.y, xMax, yMax, out var hit2d3))
{
return(false);
}
if (Mathf.Abs(Mathf.Abs(hit2d1.y) - zMax) < Mathf.Abs(Mathf.Abs(hit2d1.x) - yMax))
{
if (Mathf.Abs(Mathf.Abs(hit2d3.y) - yMax) < Mathf.Abs(Mathf.Abs(hit2d3.x) - xMax))
{
hit = new Vector3(hit2d3.x, hit2d1.y, hit2d1.x);
}
else
{
hit = new Vector3(hit2d3.x, hit2d1.y, hit2d2.y);
}
}
else
{
if (Mathf.Abs(Mathf.Abs(hit2d2.x) - xMax) < Mathf.Abs(Mathf.Abs(hit2d2.y) - zMax))
{
hit = new Vector3(hit2d2.x, hit2d1.x, hit2d2.y);
}
else
{
hit = new Vector3(hit2d2.x, hit2d3.y, hit2d2.y);
}
}
hit = rotation * hit + center;
if (Vector3.Distance(hit, ray.Start) > ray.Distance)
{
return(false);
}
return(true);
}
/// <summary>
/// 判断某个点是否在触发器移到指定位置后之内
/// </summary>
/// <param name="trigger"></param>
/// <param name="position"></param>
/// <param name="center"></param>
/// <param name="rotation"></param>
/// <returns></returns>
public static bool IsPointInTrigger(this OBBComponent trigger, Vector3 position, Vector3 center, Quaternion rotation)
{
return(AOIHelper.IsPointInTrigger(position, center, rotation, trigger.Scale));
}