public void method_0()
{
for (double?nullable = this.class28_0.method_4(); nullable.HasValue; nullable = this.class28_0.method_4())
{
this.double_1 = nullable.Value;
bool flag = false;
while (this.class103_0 != null && this.class103_0.point2D_0.Y == this.double_1)
{
VattiClipper2DV3.Class100 edge1 = new VattiClipper2DV3.Class100((VattiClipper2DV3.Class102) this.class103_0, this.class103_0.class102_0);
edge1.double_2 = edge1.point2D_0.X;
VattiClipper2DV3.Class100 edge2 = new VattiClipper2DV3.Class100((VattiClipper2DV3.Class102) this.class103_0, this.class103_0.class102_1);
int index = this.list_1.BinarySearch(edge1, (IComparer <VattiClipper2DV3.Class100>)VattiClipper2DV3.Class100.Class101.class101_0);
if (index < 0)
{
index = ~index;
}
this.list_1.Insert(index, edge1);
this.list_1.Insert(index + 1, edge2);
this.method_1(edge1);
this.method_1(edge2);
this.class103_0 = this.class103_0.class103_0;
flag = true;
}
if (flag && this.class103_0 != null)
{
this.class28_0.TryAdd(this.class103_0.point2D_0.Y);
}
this.list_3.Clear();
this.double_0 = double.NegativeInfinity;
for (this.int_0 = 0; this.int_0 < this.list_1.Count; ++this.int_0)
{
VattiClipper2DV3.Class100 edge = this.list_1[this.int_0];
if (edge.double_2 != this.double_0 && !double.IsNegativeInfinity(this.double_0))
{
this.method_3();
}
this.double_0 = edge.double_2;
if (edge.point2D_0.Y == this.double_1)
{
this.method_2(edge);
}
else if (edge.point2D_1.Y == this.double_1)
{
if (edge.class102_1.class102_0 != null)
{
this.method_2(new VattiClipper2DV3.Class100(edge.class102_1, edge.class102_1.class102_0));
}
}
else
{
this.method_5(edge);
}
}
this.method_3();
List <VattiClipper2DV3.Class100> list1 = this.list_1;
this.list_1 = this.list_3;
this.list_3 = list1;
}
}
public static IList <Polygon2D> Clip(
IList <Polygon2D> clip,
IList <Polygon2D> subject,
VattiClipper2DV3.PolygonFillMode fillMode)
{
List <VattiClipper2DV3.Class102.Class103> localMinimumList = new List <VattiClipper2DV3.Class102.Class103>();
foreach (Polygon2D polygon in (IEnumerable <Polygon2D>)clip)
{
VattiClipper2DV3.smethod_0(polygon, (byte)1, localMinimumList);
}
foreach (Polygon2D polygon in (IEnumerable <Polygon2D>)subject)
{
VattiClipper2DV3.smethod_0(polygon, (byte)2, localMinimumList);
}
localMinimumList.Sort((IComparer <VattiClipper2DV3.Class102.Class103>)VattiClipper2DV3.Class102.Class105.class105_0);
VattiClipper2DV3.Class102.Class103 class103_1 = (VattiClipper2DV3.Class102.Class103)null;
if (localMinimumList.Count > 1)
{
VattiClipper2DV3.Class102.Class103 class103_2 = localMinimumList[localMinimumList.Count - 1];
for (int index = localMinimumList.Count - 2; index >= 0; --index)
{
VattiClipper2DV3.Class102.Class103 class103_3 = localMinimumList[index];
class103_3.class103_0 = class103_2;
class103_2 = class103_3;
}
class103_1 = class103_2;
}
VattiClipper2DV3.Class99 class99 = new VattiClipper2DV3.Class99();
class99.class103_0 = class103_1;
if (class103_1 != null)
{
class99.class28_0.Add(class103_1.point2D_0.Y);
}
class99.method_0();
if (class99.list_0.Count == 0)
{
return((IList <Polygon2D>)VattiClipper2DV3.polygon2D_0);
}
List <Polygon2D> polygon2DList = new List <Polygon2D>(class99.list_0.Count);
foreach (VattiClipper2DV3.Class106 class106 in class99.list_0)
{
if (class106.Count > 2)
{
polygon2DList.Add(class106.method_0());
}
}
if (polygon2DList.Count == 0)
{
return((IList <Polygon2D>)VattiClipper2DV3.polygon2D_0);
}
return((IList <Polygon2D>)polygon2DList);
}
internal static void smethod_0(Polygon2D polygon, byte type, List <VattiClipper2DV3.Class102.Class103> localMinimumList)
{
if (polygon.Count == 0)
{
return;
}
Point2D item = polygon[0];
Point2D point2D = item;
int num = 1;
int num1 = 0;
int count = polygon.Count;
while (true)
{
if (num < count)
{
point2D = polygon[num];
num1 = System.Math.Sign(point2D.Y - item.Y);
if (num1 == 0)
{
num1 = System.Math.Sign(point2D.X - item.X);
}
if (num1 != 0)
{
num++;
break;
}
else
{
num++;
}
}
else
{
break;
}
}
VattiClipper2DV3.Class102 class102 = null;
Action <VattiClipper2DV3.Class102> class1020 = null;
while (true)
{
if (num <= count)
{
Point2D item1 = polygon[num % count];
int num2 = System.Math.Sign(item1.Y - point2D.Y);
if (num2 == 0)
{
num2 = System.Math.Sign(item1.X - point2D.X);
}
if (num2 != 0)
{
if (num2 == num1)
{
if (num2 <= 0)
{
VattiClipper2DV3.Class102 class1021 = new VattiClipper2DV3.Class102(point2D);
class1020 = (VattiClipper2DV3.Class102 prev) => class1021.class102_0 = prev;
class102 = class1021;
}
else
{
VattiClipper2DV3.Class102 class1022 = new VattiClipper2DV3.Class102(point2D);
class1020 = (VattiClipper2DV3.Class102 prev) => prev.class102_0 = class1022;
class102 = class1022;
}
}
else if (num2 <= 0 || num1 >= 0)
{
VattiClipper2DV3.Class102 class1023 = new VattiClipper2DV3.Class102(point2D);
class1020 = (VattiClipper2DV3.Class102 prev) => prev.class102_0 = class1023;
class102 = class1023;
}
else
{
VattiClipper2DV3.Class102.Class103 class103 = new VattiClipper2DV3.Class102.Class103(point2D);
class1020 = (VattiClipper2DV3.Class102 prev) => class103.class102_1 = prev;
class102 = class103;
localMinimumList.Add(class103);
}
num1 = num2;
point2D = item1;
num++;
break;
}
else
{
num++;
}
}
else
{
break;
}
}
int num3 = count + 2;
while (num < num3)
{
Point2D point2D1 = polygon[num % count];
int num4 = System.Math.Sign(point2D1.Y - point2D.Y);
if (num4 == 0)
{
num4 = System.Math.Sign(point2D1.X - point2D.X);
}
if (num4 != 0)
{
if (num4 == num1)
{
if (num4 <= 0)
{
class102 = new VattiClipper2DV3.Class102(point2D)
{
class102_0 = class102
};
}
else
{
VattiClipper2DV3.Class102 class1024 = new VattiClipper2DV3.Class102(point2D);
class102.class102_0 = class1024;
class102 = class1024;
}
}
else if (num4 <= 0 || num1 >= 0)
{
VattiClipper2DV3.Class102 class1025 = new VattiClipper2DV3.Class102(point2D);
class102.class102_0 = class1025;
class102 = class1025;
}
else
{
VattiClipper2DV3.Class102.Class103 class1031 = new VattiClipper2DV3.Class102.Class103(point2D)
{
class102_1 = class102
};
class102 = class1031;
localMinimumList.Add(class1031);
}
num1 = num4;
point2D = point2D1;
}
num++;
}
if (class1020 != null)
{
class1020(class102);
}
}