private void CutPoly(Int3[] verts, int[] tris, ref Int3[] outVertsArr, ref int[] outTrisArr, out int outVCount, out int outTCount, Int3[] extraShape, Int3 cuttingOffset, Bounds realBounds, TileHandler.CutMode mode = TileHandler.CutMode.CutAll | TileHandler.CutMode.CutDual, int perturbate = 0)
{
if (verts.Length == 0 || tris.Length == 0)
{
outVCount = 0;
outTCount = 0;
outTrisArr = new int[0];
outVertsArr = new Int3[0];
return;
}
List <IntPoint> list = null;
if (extraShape == null && (mode & TileHandler.CutMode.CutExtra) != (TileHandler.CutMode) 0)
{
throw new Exception("extraShape is null and the CutMode specifies that it should be used. Cannot use null shape.");
}
if ((mode & TileHandler.CutMode.CutExtra) != (TileHandler.CutMode) 0)
{
list = new List <IntPoint>(extraShape.Length);
for (int i = 0; i < extraShape.Length; i++)
{
list.Add(new IntPoint((long)(extraShape[i].x + cuttingOffset.x), (long)(extraShape[i].z + cuttingOffset.z)));
}
}
List <IntPoint> list2 = new List <IntPoint>(5);
Dictionary <TriangulationPoint, int> dictionary = new Dictionary <TriangulationPoint, int>();
List <PolygonPoint> list3 = new List <PolygonPoint>();
IntRect b = new IntRect(verts[0].x, verts[0].z, verts[0].x, verts[0].z);
for (int j = 0; j < verts.Length; j++)
{
b = b.ExpandToContain(verts[j].x, verts[j].z);
}
List <Int3> list4 = ListPool <Int3> .Claim(verts.Length * 2);
List <int> list5 = ListPool <int> .Claim(tris.Length);
PolyTree polyTree = new PolyTree();
List <List <IntPoint> > list6 = new List <List <IntPoint> >();
Stack <Pathfinding.Poly2Tri.Polygon> stack = new Stack <Pathfinding.Poly2Tri.Polygon>();
this.clipper = (this.clipper ?? new Clipper(0));
this.clipper.ReverseSolution = true;
this.clipper.StrictlySimple = true;
List <NavmeshCut> list7;
if (mode == TileHandler.CutMode.CutExtra)
{
list7 = ListPool <NavmeshCut> .Claim();
}
else
{
list7 = NavmeshCut.GetAllInRange(realBounds);
}
List <int> list8 = ListPool <int> .Claim();
List <IntRect> list9 = ListPool <IntRect> .Claim();
List <Int2> list10 = ListPool <Int2> .Claim();
List <List <IntPoint> > list11 = new List <List <IntPoint> >();
List <bool> list12 = ListPool <bool> .Claim();
List <bool> list13 = ListPool <bool> .Claim();
if (perturbate > 10)
{
Debug.LogError("Too many perturbations aborting : " + mode);
Debug.Break();
outVCount = verts.Length;
outTCount = tris.Length;
outTrisArr = tris;
outVertsArr = verts;
return;
}
System.Random random = null;
if (perturbate > 0)
{
random = new System.Random();
}
for (int k = 0; k < list7.Count; k++)
{
Bounds bounds = list7[k].GetBounds();
Int3 @int = (Int3)bounds.min + cuttingOffset;
Int3 int2 = (Int3)bounds.max + cuttingOffset;
IntRect a = new IntRect(@int.x, @int.z, int2.x, int2.z);
if (IntRect.Intersects(a, b))
{
Int2 int3 = new Int2(0, 0);
if (perturbate > 0)
{
int3.x = random.Next() % 6 * perturbate - 3 * perturbate;
if (int3.x >= 0)
{
int3.x++;
}
int3.y = random.Next() % 6 * perturbate - 3 * perturbate;
if (int3.y >= 0)
{
int3.y++;
}
}
int count = list11.Count;
list7[k].GetContour(list11);
for (int l = count; l < list11.Count; l++)
{
List <IntPoint> list14 = list11[l];
if (list14.Count == 0)
{
Debug.LogError("Zero Length Contour");
list9.Add(default(IntRect));
list10.Add(new Int2(0, 0));
}
else
{
IntRect item = new IntRect((int)list14[0].X + cuttingOffset.x, (int)list14[0].Y + cuttingOffset.y, (int)list14[0].X + cuttingOffset.x, (int)list14[0].Y + cuttingOffset.y);
for (int m = 0; m < list14.Count; m++)
{
IntPoint value = list14[m];
value.X += (long)cuttingOffset.x;
value.Y += (long)cuttingOffset.z;
if (perturbate > 0)
{
value.X += (long)int3.x;
value.Y += (long)int3.y;
}
list14[m] = value;
item = item.ExpandToContain((int)value.X, (int)value.Y);
}
list10.Add(new Int2(@int.y, int2.y));
list9.Add(item);
list12.Add(list7[k].isDual);
list13.Add(list7[k].cutsAddedGeom);
}
}
}
}
List <NavmeshAdd> allInRange = NavmeshAdd.GetAllInRange(realBounds);
Int3[] array = verts;
int[] array2 = tris;
int num = -1;
int n = -3;
Int3[] array3 = null;
Int3[] array4 = null;
Int3 int4 = Int3.zero;
if (allInRange.Count > 0)
{
array3 = new Int3[7];
array4 = new Int3[7];
int4 = (Int3)realBounds.extents;
}
while (true)
{
n += 3;
while (n >= array2.Length)
{
num++;
n = 0;
if (num >= allInRange.Count)
{
array = null;
break;
}
if (array == verts)
{
array = null;
}
allInRange[num].GetMesh(cuttingOffset, ref array, out array2);
}
if (array == null)
{
break;
}
Int3 int5 = array[array2[n]];
Int3 int6 = array[array2[n + 1]];
Int3 int7 = array[array2[n + 2]];
IntRect a2 = new IntRect(int5.x, int5.z, int5.x, int5.z);
a2 = a2.ExpandToContain(int6.x, int6.z);
a2 = a2.ExpandToContain(int7.x, int7.z);
int num2 = Math.Min(int5.y, Math.Min(int6.y, int7.y));
int num3 = Math.Max(int5.y, Math.Max(int6.y, int7.y));
list8.Clear();
bool flag = false;
for (int num4 = 0; num4 < list11.Count; num4++)
{
int x = list10[num4].x;
int y = list10[num4].y;
if (IntRect.Intersects(a2, list9[num4]) && y >= num2 && x <= num3 && (list13[num4] || num == -1))
{
Int3 int8 = int5;
int8.y = x;
Int3 int9 = int5;
int9.y = y;
list8.Add(num4);
flag |= list12[num4];
}
}
if (list8.Count == 0 && (mode & TileHandler.CutMode.CutExtra) == (TileHandler.CutMode) 0 && (mode & TileHandler.CutMode.CutAll) != (TileHandler.CutMode) 0 && num == -1)
{
list5.Add(list4.Count);
list5.Add(list4.Count + 1);
list5.Add(list4.Count + 2);
list4.Add(int5);
list4.Add(int6);
list4.Add(int7);
}
else
{
list2.Clear();
if (num == -1)
{
list2.Add(new IntPoint((long)int5.x, (long)int5.z));
list2.Add(new IntPoint((long)int6.x, (long)int6.z));
list2.Add(new IntPoint((long)int7.x, (long)int7.z));
}
else
{
array3[0] = int5;
array3[1] = int6;
array3[2] = int7;
int num5 = Utility.ClipPolygon(array3, 3, array4, 1, 0, 0);
if (num5 == 0)
{
continue;
}
num5 = Utility.ClipPolygon(array4, num5, array3, -1, 2 * int4.x, 0);
if (num5 == 0)
{
continue;
}
num5 = Utility.ClipPolygon(array3, num5, array4, 1, 0, 2);
if (num5 == 0)
{
continue;
}
num5 = Utility.ClipPolygon(array4, num5, array3, -1, 2 * int4.z, 2);
if (num5 == 0)
{
continue;
}
for (int num6 = 0; num6 < num5; num6++)
{
list2.Add(new IntPoint((long)array3[num6].x, (long)array3[num6].z));
}
}
dictionary.Clear();
Int3 int10 = int6 - int5;
Int3 int11 = int7 - int5;
Int3 int12 = int10;
Int3 int13 = int11;
int12.y = 0;
int13.y = 0;
for (int num7 = 0; num7 < 16; num7++)
{
if ((mode >> (num7 & 31) & TileHandler.CutMode.CutAll) != (TileHandler.CutMode) 0)
{
if (1 << num7 == 1)
{
this.clipper.Clear();
this.clipper.AddPolygon(list2, PolyType.ptSubject);
for (int num8 = 0; num8 < list8.Count; num8++)
{
this.clipper.AddPolygon(list11[list8[num8]], PolyType.ptClip);
}
polyTree.Clear();
this.clipper.Execute(ClipType.ctDifference, polyTree, PolyFillType.pftEvenOdd, PolyFillType.pftNonZero);
}
else if (1 << num7 == 2)
{
if (!flag)
{
goto IL_1174;
}
this.clipper.Clear();
this.clipper.AddPolygon(list2, PolyType.ptSubject);
for (int num9 = 0; num9 < list8.Count; num9++)
{
if (list12[list8[num9]])
{
this.clipper.AddPolygon(list11[list8[num9]], PolyType.ptClip);
}
}
list6.Clear();
this.clipper.Execute(ClipType.ctIntersection, list6, PolyFillType.pftEvenOdd, PolyFillType.pftNonZero);
this.clipper.Clear();
for (int num10 = 0; num10 < list6.Count; num10++)
{
this.clipper.AddPolygon(list6[num10], (!Clipper.Orientation(list6[num10])) ? PolyType.ptSubject : PolyType.ptClip);
}
for (int num11 = 0; num11 < list8.Count; num11++)
{
if (!list12[list8[num11]])
{
this.clipper.AddPolygon(list11[list8[num11]], PolyType.ptClip);
}
}
polyTree.Clear();
this.clipper.Execute(ClipType.ctDifference, polyTree, PolyFillType.pftEvenOdd, PolyFillType.pftNonZero);
}
else if (1 << num7 == 4)
{
this.clipper.Clear();
this.clipper.AddPolygon(list2, PolyType.ptSubject);
this.clipper.AddPolygon(list, PolyType.ptClip);
polyTree.Clear();
this.clipper.Execute(ClipType.ctIntersection, polyTree, PolyFillType.pftEvenOdd, PolyFillType.pftNonZero);
}
for (int num12 = 0; num12 < polyTree.ChildCount; num12++)
{
PolyNode polyNode = polyTree.Childs[num12];
List <IntPoint> contour = polyNode.Contour;
List <PolyNode> childs = polyNode.Childs;
if (childs.Count == 0 && contour.Count == 3 && num == -1)
{
for (int num13 = 0; num13 < contour.Count; num13++)
{
Int3 item2 = new Int3((int)contour[num13].X, 0, (int)contour[num13].Y);
double num14 = (double)(int6.z - int7.z) * (double)(int5.x - int7.x) + (double)(int7.x - int6.x) * (double)(int5.z - int7.z);
if (num14 == 0.0)
{
Debug.LogWarning("Degenerate triangle");
}
else
{
double num15 = ((double)(int6.z - int7.z) * (double)(item2.x - int7.x) + (double)(int7.x - int6.x) * (double)(item2.z - int7.z)) / num14;
double num16 = ((double)(int7.z - int5.z) * (double)(item2.x - int7.x) + (double)(int5.x - int7.x) * (double)(item2.z - int7.z)) / num14;
item2.y = (int)Math.Round(num15 * (double)int5.y + num16 * (double)int6.y + (1.0 - num15 - num16) * (double)int7.y);
list5.Add(list4.Count);
list4.Add(item2);
}
}
}
else
{
Pathfinding.Poly2Tri.Polygon polygon = null;
int num17 = -1;
for (List <IntPoint> list15 = contour; list15 != null; list15 = ((num17 >= childs.Count) ? null : childs[num17].Contour))
{
list3.Clear();
for (int num18 = 0; num18 < list15.Count; num18++)
{
PolygonPoint polygonPoint = new PolygonPoint((double)list15[num18].X, (double)list15[num18].Y);
list3.Add(polygonPoint);
Int3 item3 = new Int3((int)list15[num18].X, 0, (int)list15[num18].Y);
double num19 = (double)(int6.z - int7.z) * (double)(int5.x - int7.x) + (double)(int7.x - int6.x) * (double)(int5.z - int7.z);
if (num19 == 0.0)
{
Debug.LogWarning("Degenerate triangle");
}
else
{
double num20 = ((double)(int6.z - int7.z) * (double)(item3.x - int7.x) + (double)(int7.x - int6.x) * (double)(item3.z - int7.z)) / num19;
double num21 = ((double)(int7.z - int5.z) * (double)(item3.x - int7.x) + (double)(int5.x - int7.x) * (double)(item3.z - int7.z)) / num19;
item3.y = (int)Math.Round(num20 * (double)int5.y + num21 * (double)int6.y + (1.0 - num20 - num21) * (double)int7.y);
dictionary[polygonPoint] = list4.Count;
list4.Add(item3);
}
}
Pathfinding.Poly2Tri.Polygon polygon2;
if (stack.Count > 0)
{
polygon2 = stack.Pop();
polygon2.AddPoints(list3);
}
else
{
polygon2 = new Pathfinding.Poly2Tri.Polygon(list3);
}
if (polygon == null)
{
polygon = polygon2;
}
else
{
polygon.AddHole(polygon2);
}
num17++;
}
try
{
P2T.Triangulate(polygon);
}
catch (PointOnEdgeException)
{
Debug.LogWarning(string.Concat(new object[]
{
"PointOnEdgeException, perturbating vertices slightly ( at ",
num7,
" in ",
mode,
")"
}));
this.CutPoly(verts, tris, ref outVertsArr, ref outTrisArr, out outVCount, out outTCount, extraShape, cuttingOffset, realBounds, mode, perturbate + 1);
return;
}
for (int num22 = 0; num22 < polygon.Triangles.Count; num22++)
{
DelaunayTriangle delaunayTriangle = polygon.Triangles[num22];
list5.Add(dictionary[delaunayTriangle.Points._0]);
list5.Add(dictionary[delaunayTriangle.Points._1]);
list5.Add(dictionary[delaunayTriangle.Points._2]);
}
if (polygon.Holes != null)
{
for (int num23 = 0; num23 < polygon.Holes.Count; num23++)
{
polygon.Holes[num23].Points.Clear();
polygon.Holes[num23].ClearTriangles();
if (polygon.Holes[num23].Holes != null)
{
polygon.Holes[num23].Holes.Clear();
}
stack.Push(polygon.Holes[num23]);
}
}
polygon.ClearTriangles();
if (polygon.Holes != null)
{
polygon.Holes.Clear();
}
polygon.Points.Clear();
stack.Push(polygon);
}
}
}
IL_1174 :;
}
}
}
Dictionary <Int3, int> dictionary2 = this.cached_Int3_int_dict;
dictionary2.Clear();
if (this.cached_int_array.Length < list4.Count)
{
this.cached_int_array = new int[Math.Max(this.cached_int_array.Length * 2, list4.Count)];
}
int[] array5 = this.cached_int_array;
int num24 = 0;
for (int num25 = 0; num25 < list4.Count; num25++)
{
int num26;
if (!dictionary2.TryGetValue(list4[num25], out num26))
{
dictionary2.Add(list4[num25], num24);
array5[num25] = num24;
list4[num24] = list4[num25];
num24++;
}
else
{
array5[num25] = num26;
}
}
outTCount = list5.Count;
if (outTrisArr == null || outTrisArr.Length < outTCount)
{
outTrisArr = new int[outTCount];
}
for (int num27 = 0; num27 < outTCount; num27++)
{
outTrisArr[num27] = array5[list5[num27]];
}
outVCount = num24;
if (outVertsArr == null || outVertsArr.Length < outVCount)
{
outVertsArr = new Int3[outVCount];
}
for (int num28 = 0; num28 < outVCount; num28++)
{
outVertsArr[num28] = list4[num28];
}
for (int num29 = 0; num29 < list7.Count; num29++)
{
list7[num29].UsedForCut();
}
ListPool <Int3> .Release(list4);
ListPool <int> .Release(list5);
ListPool <int> .Release(list8);
ListPool <Int2> .Release(list10);
ListPool <bool> .Release(list12);
ListPool <bool> .Release(list13);
ListPool <IntRect> .Release(list9);
ListPool <NavmeshCut> .Release(list7);
}
/// <summary>
/// Add a hole to the polygon.
/// </summary>
/// <param name="poly">A subtraction polygon fully contained inside this polygon.</param>
public void AddHole( Polygon poly )
{
if (_holes == null) _holes = new List<Polygon>();
_holes.Add(poly);
// XXX: tests could be made here to be sure it is fully inside
// addSubtraction( poly.getPoints() );
}
public PolygonSet(Polygon poly)
{
_polygons.Add(poly);
}
public void Add(Polygon p)
{
_polygons.Add(p);
}
public static void Triangulate(Polygon p)
{
Triangulate(_defaultAlgorithm, p);
}