private void method_0(
Polyline4D result,
double startParam,
double endParam,
Class455.Class462 polylineInfo)
{
Polyline3D polyline3D0 = polylineInfo.polyline3D_0;
int count = polyline3D0.Count;
int num1 = (int)System.Math.Floor(startParam);
double parameter1 = startParam - (double)num1;
int num2 = (int)System.Math.Floor(endParam);
double parameter2 = endParam - (double)num2;
if (startParam > endParam)
{
num2 += count;
}
result.Add(this.matrix4D_0.TransformTo4D(Class455.smethod_0(polyline3D0[num1 % count], polyline3D0[(num1 + 1) % count], parameter1)));
for (int index = num1 + 1; index <= num2; ++index)
{
result.Add(this.matrix4D_0.TransformTo4D(polyline3D0[index % count]));
}
if (parameter2 <= 0.0)
{
return;
}
result.Add(this.matrix4D_0.TransformTo4D(Class455.smethod_0(polyline3D0[num2 % count], polyline3D0[(num2 + 1) % count], parameter2)));
}
private void method_1(
Polyline4D result,
Class455.Class456 start,
Class455.Class456 end,
bool backward,
Class455.Class462 polylineInfo)
{
Polyline3D polyline3D0 = polylineInfo.polyline3D_0;
Polygon2D polygon2D0 = this.class461_0.polygon2D_0;
int count = polygon2D0.Count;
double double0_1 = start.double_0;
double double0_2 = end.double_0;
double double1_1 = start.double_1;
double double1_2 = end.double_1;
int num1 = (int)System.Math.Floor(double0_1) % count;
int num2 = (int)System.Math.Floor(double0_2) % count;
result.Add(this.matrix4D_0.TransformTo4D(Class455.smethod_1(polyline3D0, double1_1)));
if (backward)
{
for (int index = num1; index != num2; index = (index + count - 1) % count)
{
Point2D p = polygon2D0[index];
Point3D point = new Point3D(p.X, p.Y, polylineInfo.method_3(p));
result.Add(this.matrix4D_0.TransformTo4D(point));
}
}
else
{
for (int index = num1; index != num2; index = (index + 1) % count)
{
Point2D p = polygon2D0[index];
Point3D point = new Point3D(p.X, p.Y, polylineInfo.method_3(p));
result.Add(this.matrix4D_0.TransformTo4D(point));
}
}
if (double0_2 == System.Math.Floor(double0_2))
{
return;
}
result.Add(this.matrix4D_0.TransformTo4D(Class455.smethod_1(polyline3D0, double1_2)));
}
public override IList <Polyline4D> Clip(Polyline4D polyline, bool filled)
{
int count = polyline.Count;
switch (count)
{
case 0:
return(AbstractClipperBase4D.PolylinesClippedAway);
case 1:
if (!Class455.Contains(this.class461_0, this.matrix4D_1.TransformToPoint2D(polyline[0])))
{
return(AbstractClipperBase4D.PolylinesClippedAway);
}
return((IList <Polyline4D>) new Polyline4D[1] {
polyline
});
default:
Polyline3D polyline1 = new Polyline3D(polyline.Count, polyline.Closed);
foreach (Vector4D vector in (List <Vector4D>)polyline)
{
polyline1.Add(this.matrix4D_1.TransformToPoint3D(vector));
}
Class455.Class462 polylineInfo = new Class455.Class462(polyline1);
List <Class455.Class456> class456List = this.class461_0.method_0((Class455.Class460)polylineInfo);
if (class456List.Count == 0)
{
if (polyline1.Count == 0)
{
return (IList <Polyline4D>) new Polyline4D[1] {
polyline
}
}
;
foreach (Point3D point3D in (List <Point3D>)polyline1)
{
if (Class455.Contains(this.class461_0, (Point2D)point3D))
{
return (IList <Polyline4D>) new Polyline4D[1] {
polyline
}
}
;
}
if (!filled || polyline.Count < 3)
{
return(AbstractClipperBase4D.PolylinesClippedAway);
}
Polygon2D polygon2D = new Polygon2D(polyline1.Count);
foreach (Point3D point3D in (List <Point3D>)polyline1)
{
polygon2D.Add((Point2D)point3D);
}
bool flag = false;
foreach (Point2D p in (List <Point2D>) this.class461_0.polygon2D_0)
{
if (polygon2D.IsInside(p))
{
flag = true;
break;
}
}
if (filled && flag)
{
Plane3D?plane = Polygon3D.GetPlane((IList <Point3D>)polyline1);
if (plane.HasValue)
{
Plane3D plane3D = plane.Value;
Polyline4D polyline4D = new Polyline4D(this.class461_0.polygon2D_0.Count, true);
foreach (Point2D point2D in (List <Point2D>) this.class461_0.polygon2D_0)
{
Point3D?intersection = plane3D.GetIntersection(new Ray3D(point2D.X, point2D.Y, 0.0, 0.0, 0.0, 1.0));
if (intersection.HasValue)
{
polyline4D.Add(this.matrix4D_0.TransformTo4D(intersection.Value));
}
else
{
intersection = plane3D.GetIntersection(new Ray3D(point2D.X, point2D.Y, 0.0, 0.0, 0.0, -1.0));
if (intersection.HasValue)
{
polyline4D.Add(this.matrix4D_0.TransformTo4D(intersection.Value));
}
}
}
return((IList <Polyline4D>) new Polyline4D[1] {
polyline4D
});
}
}
return(AbstractClipperBase4D.PolylinesClippedAway);
}
bool flag1 = polylineInfo.double_0 * this.class461_0.double_0 >= 0.0;
List <Polyline4D> polyline4DList = new List <Polyline4D>();
int index1;
if (!Class455.Contains(this.class461_0, (Point2D)polyline1[0]))
{
index1 = 0;
}
else if (polyline.Closed)
{
index1 = class456List.Count - 1;
}
else
{
Polyline4D result = new Polyline4D(filled);
this.method_0(result, 0.0, class456List[0].double_1, polylineInfo);
polyline4DList.Add(result);
class456List.RemoveAt(0);
index1 = 0;
if (class456List.Count == 0)
{
return((IList <Polyline4D>)polyline4DList);
}
}
if (filled)
{
while (class456List.Count > 0)
{
if (polylineInfo.bool_0)
{
class456List.Sort(new Comparison <Class455.Class456>(Class455.Class456.smethod_2));
}
else
{
class456List.Sort(new Comparison <Class455.Class456>(Class455.Class456.smethod_0));
if (!flag1)
{
class456List.Reverse();
}
}
for (int index2 = 0; index2 < class456List.Count; ++index2)
{
Class455.Class456 class456_1 = class456List[index2];
Class455.Class456 class456_2 = class456List[(index2 + 1) % class456List.Count];
class456_1.class456_0 = class456_2;
class456_2.class456_1 = class456_1;
}
class456List.Sort(new Comparison <Class455.Class456>(Class455.Class456.smethod_1));
for (int index2 = 0; index2 < class456List.Count; ++index2)
{
Class455.Class456 class456_1 = class456List[index2];
Class455.Class456 class456_2 = class456List[(index2 + 1) % class456List.Count];
class456_1.class456_2 = class456_2;
class456_2.class456_3 = class456_1;
}
Polyline4D result = new Polyline4D(true);
polyline4DList.Add(result);
Class455.Class456 class456 = class456List[index1];
class456List.RemoveAt(index1);
bool flag2 = index1 > 0;
index1 = 0;
Class455.Class456 start = class456;
do
{
Class455.Class456 end = start.class456_2;
bool flag3;
if (flag2 || end.double_1 >= start.double_1)
{
double parameter = 0.5 * (start.double_1 + end.double_1);
if (flag2)
{
parameter += 0.5 * (double)count;
flag2 = false;
}
flag3 = Class455.Contains(this.class461_0, (Point2D)Class455.smethod_1(polylineInfo.polyline3D_0, parameter));
}
else
{
goto label_72;
}
label_65:
if (flag3)
{
this.method_0(result, start.double_1, end.double_1, polylineInfo);
}
else
{
end = start.class456_0;
if (polylineInfo.bool_0)
{
result.Add(this.matrix4D_0.TransformTo4D(Class455.smethod_1(polylineInfo.polyline3D_0, start.double_1)));
}
else
{
this.method_1(result, start, end, !flag1, polylineInfo);
}
}
class456List.Remove(end);
if (end.class456_2 != end.class456_3)
{
end.class456_1.class456_0 = end.class456_0;
end.class456_0.class456_1 = end.class456_1;
end.class456_3.class456_2 = end.class456_2;
end.class456_2.class456_3 = end.class456_3;
start = end;
continue;
}
break;
label_72:
flag3 = false;
goto label_65;
}while (!object.ReferenceEquals((object)start, (object)class456));
if (result.Count < 3)
{
result.Closed = false;
}
}
}
else
{
bool flag2 = Class455.Contains(this.class461_0, (Point2D)polyline1[polyline1.Count - 1]);
class456List.Sort(new Comparison <Class455.Class456>(Class455.Class456.smethod_1));
Class455.Class456 class456_1 = class456List[index1];
class456List.RemoveAt(index1);
while (class456List.Count > 0)
{
Class455.Class456 class456_2 = class456List[0];
class456List.RemoveAt(0);
double parameter = 0.5 * (class456_1.double_1 + class456_2.double_1);
if (class456_2.double_1 < class456_1.double_1)
{
parameter += 0.5 * (double)count;
}
if (Class455.Contains(this.class461_0, (Point2D)Class455.smethod_1(polylineInfo.polyline3D_0, parameter)))
{
Polyline4D result = new Polyline4D();
this.method_0(result, class456_1.double_1, class456_2.double_1, polylineInfo);
polyline4DList.Add(result);
}
class456_1 = class456_2;
}
if (!polyline.Closed && flag2)
{
Polyline4D result = new Polyline4D();
this.method_0(result, class456_1.double_1, (double)(polyline.Count - 1), polylineInfo);
polyline4DList.Add(result);
}
}
return((IList <Polyline4D>)polyline4DList);
}
}