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 static void smethod_4(
List <Class455.Class459> edgeRefs,
List <Class455.Class456> intersections)
{
edgeRefs.Sort();
List <Class455.Class458> class458List = new List <Class455.Class458>();
foreach (Class455.Class459 edgeRef in edgeRefs)
{
if (!edgeRef.Insert)
{
class458List.Remove(edgeRef.class458_0);
}
else
{
Class455.Class458 class4580 = edgeRef.class458_0;
bool bool0 = class4580.bool_0;
foreach (Class455.Class458 edge2 in class458List)
{
if (bool0 ^ edge2.bool_0)
{
Class455.smethod_5(class4580, edge2, intersections);
}
}
class458List.Add(class4580);
}
}
}
public Class461(Polygon2D polygon, bool inverseClip)
{
this.polygon2D_0 = polygon;
this.ilist_0 = Class455.smethod_2(polygon, out this.point2D_0, out this.point2D_1);
this.double_0 = polygon.GetArea();
this.bounds2D_0 = polygon.GetBounds();
this.bool_0 = inverseClip;
}
public override IList <Segment4D> Clip(Segment4D segment)
{
Point3D point3D1 = this.matrix4D_1.TransformToPoint3D(segment.Start);
Point3D point3D2 = this.matrix4D_1.TransformToPoint3D(segment.End);
Point2D point = (Point2D)point3D1;
Vector2D vector2D = (Point2D)point3D2 - point;
bool flag = Class455.Contains(this.class461_0, point);
if (vector2D == Vector2D.Zero)
{
if (!flag)
{
return(AbstractClipperBase4D.SegmentClippedAway);
}
return((IList <Segment4D>) new Segment4D[1] {
segment
});
}
List <Class455.Class456> class456List = this.class461_0.method_1(point3D1, point3D2);
if (class456List.Count == 0)
{
if (!flag)
{
return(AbstractClipperBase4D.SegmentClippedAway);
}
return((IList <Segment4D>) new Segment4D[1] {
segment
});
}
class456List.Sort(new Comparison <Class455.Class456>(Class455.Class456.smethod_1));
Vector4D delta = segment.GetDelta();
List <Segment4D> segment4DList = new List <Segment4D>();
double num = 0.0;
foreach (Class455.Class456 class456 in class456List)
{
if (flag)
{
segment4DList.Add(new Segment4D(segment.Start + num * delta, segment.Start + class456.double_1 * delta));
}
else
{
num = class456.double_1;
}
flag = !flag;
}
if (flag)
{
segment4DList.Add(new Segment4D(segment.Start + num * delta, segment.End));
}
return((IList <Segment4D>)segment4DList);
}
public List <Class455.Class456> method_0(Class455.Class460 info)
{
List <Class455.Class456> intersections = new List <Class455.Class456>();
if (info.point2D_0.X < this.point2D_1.X && info.point2D_1.X > this.point2D_0.X && (info.point2D_0.Y < this.point2D_1.Y && info.point2D_1.Y > this.point2D_0.Y))
{
List <Class455.Class459> edgeRefs = new List <Class455.Class459>(this.ilist_0.Count + info.ilist_0.Count);
edgeRefs.AddRange((IEnumerable <Class455.Class459>) this.ilist_0);
edgeRefs.AddRange((IEnumerable <Class455.Class459>)info.ilist_0);
Class455.smethod_4(edgeRefs, intersections);
}
return(intersections);
}
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 List <Class455.Class456> method_1(Point3D start, Point3D end)
{
double x1;
double x2;
if (start.X < end.X)
{
x1 = start.X;
x2 = end.X;
}
else
{
x1 = end.X;
x2 = start.X;
}
double y1;
double y2;
if (start.Y < end.Y)
{
y1 = start.Y;
y2 = end.Y;
}
else
{
y1 = end.Y;
y2 = start.Y;
}
List <Class455.Class456> intersections = new List <Class455.Class456>();
if (x1 < this.point2D_1.X && x2 > this.point2D_0.X && (y1 < this.point2D_1.Y && y2 > this.point2D_0.Y))
{
List <Class455.Class459> edgeRefs = new List <Class455.Class459>(this.ilist_0.Count + 2);
edgeRefs.AddRange((IEnumerable <Class455.Class459>) this.ilist_0);
Class455.Class458 edge = new Class455.Class458(0, start, end, true);
edgeRefs.Add(new Class455.Class459(true, edge));
edgeRefs.Add(new Class455.Class459(false, edge));
Class455.smethod_4(edgeRefs, intersections);
}
return(intersections);
}
public override bool IsInside(Vector4D point)
{
return(Class455.Contains(this.class461_0, this.matrix4D_1.TransformToPoint2D(point)));
}
private static Point3D smethod_1(Polyline3D polyline, double parameter)
{
int num = (int)System.Math.Floor(parameter);
return(Class455.smethod_0(polyline[num % polyline.Count], polyline[(num + 1) % polyline.Count], parameter - (double)num));
}
private Class455(Class455 clipper)
{
this.matrix4D_0 = clipper.matrix4D_0;
this.matrix4D_1 = clipper.matrix4D_1;
this.class461_0 = clipper.class461_0;
}
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);
}
}
public Class462(Polyline3D polyline)
{
this.polyline3D_0 = polyline;
this.ilist_0 = Class455.smethod_3(polyline, out this.point2D_0, out this.point2D_1);
this.double_0 = 0.0;
int count = polyline.Count;
List <Point3D> point3DList = new List <Point3D>(3);
if (count > 0)
{
Point3D point3D1 = polyline[count - 1];
point3DList.Add(point3D1);
if (count == 2)
{
Point3D point3D2 = polyline[0];
if (point3D2.X != point3D1.X || point3D2.Y != point3D1.Y)
{
point3DList.Add(point3D2);
}
}
else
{
Point3D point3D2 = point3D1;
Vector2D?nullable1 = new Vector2D?();
Vector2D?nullable2 = new Vector2D?();
for (int index = 0; index < count; ++index)
{
Point3D point3D3 = polyline[index];
this.double_0 += point3D2.X * point3D3.Y - point3D3.X * point3D2.Y;
Vector2D vector2D = (Vector2D)(point3D3 - point3D1);
double length = vector2D.GetLength();
if (length > 0.0)
{
Vector2D v = vector2D / length;
if (!nullable1.HasValue)
{
nullable1 = new Vector2D?(v);
point3DList.Add(point3D3);
}
else if (!nullable2.HasValue && System.Math.Abs(Vector2D.CrossProduct(nullable1.Value, v)) > 1E-06)
{
nullable2 = new Vector2D?(v);
point3DList.Add(point3D3);
}
}
point3D2 = point3D3;
}
this.double_0 *= 0.5;
}
if (point3DList.Count > 2)
{
Vector3D vector3D1 = point3DList[1] - point3DList[0];
Vector3D vector3D2 = point3DList[2] - point3DList[0];
double num = vector3D2.X * vector3D1.Y - vector3D1.X * vector3D2.Y;
this.double_1 = (vector3D2.Z * vector3D1.Y - vector3D1.Z * vector3D2.Y) / num;
this.double_2 = (vector3D1.Z * vector3D2.X - vector3D2.Z * vector3D1.X) / num;
}
else if (point3DList.Count == 2)
{
Vector3D vector3D = point3DList[1] - point3DList[0];
if (System.Math.Abs(vector3D.X) >= System.Math.Abs(vector3D.Y))
{
this.double_1 = vector3D.Z / vector3D.X;
this.double_2 = 0.0;
}
else
{
this.double_1 = 0.0;
this.double_2 = vector3D.Z / vector3D.Y;
}
}
else
{
double num = 0.0;
this.double_2 = 0.0;
this.double_1 = num;
}
this.double_3 = point3D1.Z - this.double_1 * point3D1.X - this.double_2 * point3D1.Y;
}
else
{
double num1 = 0.0;
this.double_2 = 0.0;
double num2 = num1;
double num3 = 0.0;
this.double_1 = num2;
this.double_3 = num3;
}
this.bool_0 = this.double_0 == 0.0;
}