public void InitSides()
{
this.Sides = new List <AreaSide>();
AreaSide rDownSide = new AreaSide()
{
Index = 0, Points = new List <Vector3>()
};
rDownSide.EdgeLine = new Line()
{
Start = this.Rect.Min, End = new Vector3(this.Rect.Max.x, 0, this.Rect.Min.z)
}; // min.z 一样
rDownSide.SortPoints();
this.Sides.Add(rDownSide);
AreaSide rRightSide = new AreaSide()
{
Index = 1, Points = new List <Vector3>()
};
rRightSide.EdgeLine = new Line()
{
Start = new Vector3(this.Rect.Max.x, 0, this.Rect.Min.z), End = this.Rect.Max
}; // Max.x 一样
rRightSide.SortPoints();
this.Sides.Add(rRightSide);
AreaSide rUpSide = new AreaSide()
{
Index = 2, Points = new List <Vector3>()
};
rUpSide.EdgeLine = new Line()
{
Start = this.Rect.Max, End = new Vector3(this.Rect.Min.x, 0, this.Rect.Max.z)
}; // Max.z 一样
rUpSide.SortPoints();
this.Sides.Add(rUpSide);
AreaSide rLeftSide = new AreaSide()
{
Index = 3, Points = new List <Vector3>()
};
rLeftSide.EdgeLine = new Line()
{
Start = new Vector3(this.Rect.Min.x, 0, this.Rect.Max.z), End = this.Rect.Min
}; // Min.x 一样
rLeftSide.SortPoints();
this.Sides.Add(rLeftSide);
}
/// <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();
}
