public static void Clip(
IList <Polygon2I> clip,
IList <Polygon2I> subject,
VattiClipper2I.PolygonFillMode fillMode)
{
List <VattiClipper2I.Class191> localMinimumList = new List <VattiClipper2I.Class191>();
foreach (Polygon2I polygon in (IEnumerable <Polygon2I>)clip)
{
VattiClipper2I.smethod_0(polygon, (byte)1, localMinimumList);
}
foreach (Polygon2I polygon in (IEnumerable <Polygon2I>)subject)
{
VattiClipper2I.smethod_0(polygon, (byte)2, localMinimumList);
}
localMinimumList.Sort();
VattiClipper2I.Class191 localMinimum = (VattiClipper2I.Class191)null;
if (localMinimumList.Count > 1)
{
VattiClipper2I.Class191 class191_1 = localMinimumList[localMinimumList.Count - 1];
for (int index = localMinimumList.Count - 2; index >= 0; --index)
{
VattiClipper2I.Class191 class191_2 = localMinimumList[index];
class191_2.Next = class191_1;
class191_1 = class191_2;
}
localMinimum = class191_1;
}
VattiClipper2I.Class195 class195 = new VattiClipper2I.Class195();
if (localMinimum == null)
{
return;
}
class195.EventQueue.Add(localMinimum);
}
internal static void smethod_0(
Polygon2I polygon,
byte type,
List <VattiClipper2I.Class191> localMinimumList)
{
if (polygon.Count == 0)
{
return;
}
Point2I point2I1 = polygon[polygon.Count - 1];
Point2I p = polygon[0];
VattiClipper2I.Class199 class199_1 = new VattiClipper2I.Class199(point2I1.X, point2I1.Y, p.X, p.Y)
{
Type = type
};
VattiClipper2I.Class199 e0 = class199_1;
int num1 = System.Math.Sign(p.Y - point2I1.Y);
bool flag1 = false;
if (num1 == 0)
{
flag1 = true;
for (int index = polygon.Count - 2; index > 0; --index)
{
num1 = System.Math.Sign(p.Y - polygon[index].Y);
if (num1 != 0)
{
break;
}
}
}
class199_1.XBottom = num1 < 0 ? p.X : point2I1.X;
for (int index = 1; index < polygon.Count; ++index)
{
Point2I point2I2 = polygon[index];
VattiClipper2I.Class199 class199_2 = new VattiClipper2I.Class199(p.X, p.Y, point2I2.X, point2I2.Y)
{
Type = type
};
int num2 = System.Math.Sign(point2I2.Y - p.Y);
bool flag2 = false;
if (num2 == 0)
{
flag2 = true;
num2 = num1;
if (flag1)
{
e0.method_2(class199_2);
class199_2 = e0;
}
else if (num2 > 0)
{
e0.Successor = class199_2;
class199_2.XBottom = p.X;
}
else
{
class199_2.Successor = e0;
class199_2.XBottom = point2I2.X;
}
}
else if (num2 == num1)
{
if (num2 > 0)
{
e0.Successor = class199_2;
class199_2.XBottom = p.X;
}
else
{
class199_2.Successor = e0;
class199_2.XBottom = point2I2.X;
}
}
else if (num2 > 0 && num1 < 0)
{
VattiClipper2I.smethod_1(p, localMinimumList, e0, class199_2);
}
else if (num2 < 0 && num1 > 0)
{
class199_2.XBottom = point2I2.X;
}
num1 = num2;
flag1 = flag2;
p = point2I2;
e0 = class199_2;
}
Point2I point2I3 = polygon[0];
VattiClipper2I.Class199 class199_3 = class199_1;
int num3 = System.Math.Sign(point2I3.Y - p.Y);
if (num3 == 0)
{
int num2 = num1;
if (flag1)
{
e0.method_2(class199_3);
}
else if (num2 > 0)
{
e0.Successor = class199_3;
class199_3.XBottom = p.X;
}
else
{
class199_3.Successor = e0;
class199_3.XBottom = point2I3.X;
}
}
else if (num3 == num1)
{
if (num3 > 0)
{
e0.Successor = class199_3;
class199_3.XBottom = p.X;
}
else
{
class199_3.Successor = e0;
class199_3.XBottom = point2I3.X;
}
}
else if (num3 > 0 && num1 < 0)
{
VattiClipper2I.smethod_1(p, localMinimumList, e0, class199_3);
}
else if (num3 < 0)
{
;
}
}