private void BuildArea(AreaAABB rNewAABB)
{
for (int i = 0; i < rNewAABB.Sides.Count; i++)
{
for (int k = 0; k < mCurrentAreas.Count; k++)
{
this.Intersect_Side_AreaAABB(rNewAABB.Sides[i], mCurrentAreas[k]);
}
}
}
private void BuildAreas()
{
var rPrevAreas = new List <AreaAABB>(this.mCurrentAreas);
this.mCurrentAreas.Clear();
// 找到所有的区域与区域之间线段的交点
for (int i = 0; i < rPrevAreas.Count; i++)
{
rPrevAreas[i].InitSides();
this.BuildArea(rPrevAreas[i]);
mCurrentAreas.Add(rPrevAreas[i]);
}
// 根据线段的交点找到哪些线是需要隐藏的
for (int i = 1; i < mCurrentAreas.Count; i++)
{
for (int j = 0; j < i; j++)
{
for (int k = 0; k < mCurrentAreas[i].Sides.Count; k++)
{
AreaSide rSide = mCurrentAreas[i].Sides[k];
for (int p = 0; p < rSide.Lines.Count; p++)
{
if (mCurrentAreas[j].IsContainLine(rSide.Lines[p]))
{
rSide.Lines[p].State = 1;
}
}
}
}
}
for (int i = 0; i < mCurrentAreas.Count; i++)
{
// 找Area中的线所在的所有所属区域
for (int j = 0; j < mCurrentAreas[i].Sides.Count; j++)
{
for (int k = 0; k < mCurrentAreas[i].Sides[j].Lines.Count; k++)
{
Line rLine = mCurrentAreas[i].Sides[j].Lines[k];
AreaAABB rHighestOrderArea = GetHighestOrderArea(rLine, mCurrentAreas[i]);
if (rHighestOrderArea != null)
{
if (rHighestOrderArea.UID == mCurrentAreas[i].UID)
{
rLine.State = 1;
}
}
}
}
}
}
public void AddArea(string rAreaID, int nUID, int nOrder, Vector3 rPos, Vector3 rSize)
{
int nFindIndex = mCurrentAreas.FindIndex((rItem) => { return(rItem.AreaID.Equals(rAreaID)); });
if (nFindIndex >= 0)
{
return;
}
var rNewArea = new AreaAABB(rAreaID, nUID, nOrder, rPos, rSize);
mCurrentAreas.Add(rNewArea);
mCurrentAreas.Sort((rItem1, rItem2) => { return(rItem1.Order.CompareTo(rItem2.Order)); });
this.BuildAreas();
}
/// <summary>
/// 判断一个Side是否和一个Area相交，如果相交了，分别把Side和AABB的边裁减成多个线段
/// </summary>
public void Intersect_Side_AreaAABB(AreaSide rSide, AreaAABB rArea)
{
List <Vector3> rTempPoints = new List <Vector3>(rSide.Points);
Line rLine = rSide.EdgeLine;
for (int j = 0; j < rArea.Sides.Count; j++)
{
List <Vector3> rTempAreaPoints = new List <Vector3>(rArea.Sides[j].Points);
Line rAreaLine = rArea.Sides[j].EdgeLine;
this.GetIntersectPoint_AABB(rLine, rAreaLine, rTempPoints, rTempAreaPoints);
rArea.Sides[j].Points = rTempAreaPoints;
rArea.Sides[j].SortPoints();
}
rSide.Points = rTempPoints;
rSide.SortPoints();
}
private AreaAABB GetHighestOrderArea(Line rLine, AreaAABB rSelfArea)
{
AreaAABB rArea = null;
for (int i = 0; i < mCurrentAreas.Count; i++)
{
if (mCurrentAreas[i] == rSelfArea)
{
continue;
}
if (mCurrentAreas[i].IsContainLine_NoEdge(rLine))
{
if (rArea == null || mCurrentAreas[i].Order < rArea.Order)
{
rArea = mCurrentAreas[i];
}
}
}
return(rArea);
}
