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feat: Initial commit

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PopSlime
2025-02-14 16:06:00 +08:00
commit da75a84e02
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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/// Changes from the Java version
/// Removed BST code, but not all artifacts of it
/// Future possibilities
/// Eliminate Add/RemoveNode ?
/// Comments comments and more comments!
using System.Text;
using System;
namespace Poly2Tri
{
/**
* @author Thomas Åhlen (thahlen@gmail.com)
*/
public class AdvancingFront
{
public AdvancingFrontNode Head;
public AdvancingFrontNode Tail;
protected AdvancingFrontNode Search;
public AdvancingFront(AdvancingFrontNode head, AdvancingFrontNode tail)
{
this.Head = head;
this.Tail = tail;
this.Search = head;
AddNode(head);
AddNode(tail);
}
public void AddNode(AdvancingFrontNode node) { }
public void RemoveNode(AdvancingFrontNode node) { }
public override string ToString()
{
StringBuilder sb = new StringBuilder();
AdvancingFrontNode node = Head;
while (node != Tail)
{
sb.Append(node.Point.X).Append("->");
node = node.Next;
}
sb.Append(Tail.Point.X);
return sb.ToString();
}
/// <summary>
/// MM: This seems to be used by LocateNode to guess a position in the implicit linked list of AdvancingFrontNodes near x
/// Removed an overload that depended on this being exact
/// </summary>
private AdvancingFrontNode FindSearchNode(double x)
{
return Search;
}
/// <summary>
/// We use a balancing tree to locate a node smaller or equal to given key value (in theory)
/// </summary>
public AdvancingFrontNode LocateNode(TriangulationPoint point)
{
return LocateNode(point.X);
}
private AdvancingFrontNode LocateNode(double x)
{
AdvancingFrontNode node = FindSearchNode(x);
if (x < node.Value)
{
while ((node = node.Prev) != null)
{
if (x >= node.Value)
{
Search = node;
return node;
}
}
}
else
{
while ((node = node.Next) != null)
{
if (x < node.Value)
{
Search = node.Prev;
return node.Prev;
}
}
}
return null;
}
/// <summary>
/// This implementation will use simple node traversal algorithm to find a point on the front
/// </summary>
public AdvancingFrontNode LocatePoint(TriangulationPoint point)
{
double px = point.X;
AdvancingFrontNode node = FindSearchNode(px);
double nx = node.Point.X;
if (px == nx)
{
if (point != node.Point)
{
// We might have two nodes with same x value for a short time
if (point == node.Prev.Point)
{
node = node.Prev;
}
else if (point == node.Next.Point)
{
node = node.Next;
}
else
{
throw new Exception("Failed to find Node for given afront point");
}
}
}
else if (px < nx)
{
while ((node = node.Prev) != null)
{
if (point == node.Point)
{
break;
}
}
}
else
{
while ((node = node.Next) != null)
{
if (point == node.Point)
{
break;
}
}
}
Search = node;
return node;
}
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/// Changes from the Java version
/// Removed getters
/// Has* turned into attributes
/// Future possibilities
/// Comments!
namespace Poly2Tri
{
public class AdvancingFrontNode
{
public AdvancingFrontNode Next;
public AdvancingFrontNode Prev;
public double Value;
public TriangulationPoint Point;
public DelaunayTriangle Triangle;
public AdvancingFrontNode(TriangulationPoint point)
{
this.Point = point;
Value = point.X;
}
public bool HasNext { get { return Next != null; } }
public bool HasPrev { get { return Prev != null; } }
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace Poly2Tri
{
public class DTSweepBasin
{
public AdvancingFrontNode leftNode;
public AdvancingFrontNode bottomNode;
public AdvancingFrontNode rightNode;
public double width;
public bool leftHighest;
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
//using System.Collections.Generic;
using System.Diagnostics;
//using System.Linq;
namespace Poly2Tri
{
public class DTSweepConstraint : TriangulationConstraint
{
/// <summary>
/// Give two points in any order. Will always be ordered so
/// that q.y > p.y and q.x > p.x if same y value
/// </summary>
public DTSweepConstraint(TriangulationPoint p1, TriangulationPoint p2)
: base(p1, p2)
{
Q.AddEdge(this);
}
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace Poly2Tri
{
/**
*
* @author Thomas Åhlén, thahlen@gmail.com
*
*/
public class DTSweepContext : TriangulationContext
{
// Inital triangle factor, seed triangle will extend 30% of
// PointSet width to both left and right.
private readonly float ALPHA = 0.3f;
public AdvancingFront Front;
public TriangulationPoint Head { get; set; }
public TriangulationPoint Tail { get; set; }
public DTSweepBasin Basin = new DTSweepBasin();
public DTSweepEdgeEvent EdgeEvent = new DTSweepEdgeEvent();
private DTSweepPointComparator _comparator = new DTSweepPointComparator();
public override TriangulationAlgorithm Algorithm { get { return TriangulationAlgorithm.DTSweep; } }
public DTSweepContext()
{
Clear();
}
public override bool IsDebugEnabled
{
get
{
return base.IsDebugEnabled;
}
protected set
{
if (value && DebugContext == null)
{
DebugContext = new DTSweepDebugContext(this);
}
base.IsDebugEnabled = value;
}
}
public void RemoveFromList(DelaunayTriangle triangle)
{
Triangles.Remove(triangle);
// TODO: remove all neighbor pointers to this triangle
// for( int i=0; i<3; i++ )
// {
// if( triangle.neighbors[i] != null )
// {
// triangle.neighbors[i].clearNeighbor( triangle );
// }
// }
// triangle.clearNeighbors();
}
public void MeshClean(DelaunayTriangle triangle)
{
MeshCleanReq(triangle);
}
private void MeshCleanReq(DelaunayTriangle triangle)
{
if (triangle != null && !triangle.IsInterior)
{
triangle.IsInterior = true;
Triangulatable.AddTriangle(triangle);
for (int i = 0; i < 3; i++)
{
if (!triangle.EdgeIsConstrained[i])
{
MeshCleanReq(triangle.Neighbors[i]);
}
}
}
}
public override void Clear()
{
base.Clear();
Triangles.Clear();
}
public void AddNode(AdvancingFrontNode node)
{
// Console.WriteLine( "add:" + node.key + ":" + System.identityHashCode(node.key));
// m_nodeTree.put( node.getKey(), node );
Front.AddNode(node);
}
public void RemoveNode(AdvancingFrontNode node)
{
// Console.WriteLine( "remove:" + node.key + ":" + System.identityHashCode(node.key));
// m_nodeTree.delete( node.getKey() );
Front.RemoveNode(node);
}
public AdvancingFrontNode LocateNode(TriangulationPoint point)
{
return Front.LocateNode(point);
}
public void CreateAdvancingFront()
{
AdvancingFrontNode head, tail, middle;
// Initial triangle
DelaunayTriangle iTriangle = new DelaunayTriangle(Points[0], Tail, Head);
Triangles.Add(iTriangle);
head = new AdvancingFrontNode(iTriangle.Points[1]);
head.Triangle = iTriangle;
middle = new AdvancingFrontNode(iTriangle.Points[0]);
middle.Triangle = iTriangle;
tail = new AdvancingFrontNode(iTriangle.Points[2]);
Front = new AdvancingFront(head, tail);
Front.AddNode(middle);
// TODO: I think it would be more intuitive if head is middles next and not previous
// so swap head and tail
Front.Head.Next = middle;
middle.Next = Front.Tail;
middle.Prev = Front.Head;
Front.Tail.Prev = middle;
}
/// <summary>
/// Try to map a node to all sides of this triangle that don't have
/// a neighbor.
/// </summary>
public void MapTriangleToNodes(DelaunayTriangle t)
{
for (int i = 0; i < 3; i++)
{
if (t.Neighbors[i] == null)
{
AdvancingFrontNode n = Front.LocatePoint(t.PointCWFrom(t.Points[i]));
if (n != null)
{
n.Triangle = t;
}
}
}
}
public override void PrepareTriangulation(ITriangulatable t)
{
base.PrepareTriangulation(t);
double xmax, xmin;
double ymax, ymin;
xmax = xmin = Points[0].X;
ymax = ymin = Points[0].Y;
// Calculate bounds. Should be combined with the sorting
foreach (TriangulationPoint p in Points)
{
if (p.X > xmax)
{
xmax = p.X;
}
if (p.X < xmin)
{
xmin = p.X;
}
if (p.Y > ymax)
{
ymax = p.Y;
}
if (p.Y < ymin)
{
ymin = p.Y;
}
}
double deltaX = ALPHA * (xmax - xmin);
double deltaY = ALPHA * (ymax - ymin);
TriangulationPoint p1 = new TriangulationPoint(xmax + deltaX, ymin - deltaY);
TriangulationPoint p2 = new TriangulationPoint(xmin - deltaX, ymin - deltaY);
Head = p1;
Tail = p2;
// long time = System.nanoTime();
// Sort the points along y-axis
Points.Sort(_comparator);
// logger.info( "Triangulation setup [{}ms]", ( System.nanoTime() - time ) / 1e6 );
}
public void FinalizeTriangulation()
{
Triangulatable.AddTriangles(Triangles);
Triangles.Clear();
}
public override TriangulationConstraint NewConstraint(TriangulationPoint a, TriangulationPoint b)
{
return new DTSweepConstraint(a, b);
}
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace Poly2Tri
{
public class DTSweepDebugContext : TriangulationDebugContext
{
/*
* Fields used for visual representation of current triangulation
*/
public DelaunayTriangle PrimaryTriangle { get { return _primaryTriangle; } set { _primaryTriangle = value; _tcx.Update("set PrimaryTriangle"); } }
public DelaunayTriangle SecondaryTriangle { get { return _secondaryTriangle; } set { _secondaryTriangle = value; _tcx.Update("set SecondaryTriangle"); } }
public TriangulationPoint ActivePoint { get { return _activePoint; } set { _activePoint = value; _tcx.Update("set ActivePoint"); } }
public AdvancingFrontNode ActiveNode { get { return _activeNode; } set { _activeNode = value; _tcx.Update("set ActiveNode"); } }
public DTSweepConstraint ActiveConstraint { get { return _activeConstraint; } set { _activeConstraint = value; _tcx.Update("set ActiveConstraint"); } }
public DTSweepDebugContext(DTSweepContext tcx) : base(tcx) { }
public bool IsDebugContext { get { return true; } }
public override void Clear()
{
PrimaryTriangle = null;
SecondaryTriangle = null;
ActivePoint = null;
ActiveNode = null;
ActiveConstraint = null;
}
private DelaunayTriangle _primaryTriangle;
private DelaunayTriangle _secondaryTriangle;
private TriangulationPoint _activePoint;
private AdvancingFrontNode _activeNode;
private DTSweepConstraint _activeConstraint;
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/// Changes from the Java version
/// Turned DTSweepEdgeEvent into a value type
namespace Poly2Tri
{
public class DTSweepEdgeEvent
{
public DTSweepConstraint ConstrainedEdge;
public bool Right;
}
}

11
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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System.Collections.Generic;
namespace Poly2Tri
{
public class DTSweepPointComparator : IComparer<TriangulationPoint>
{
public int Compare(TriangulationPoint p1, TriangulationPoint p2)
{
if (p1.Y < p2.Y)
{
return -1;
}
else if (p1.Y > p2.Y)
{
return 1;
}
else
{
if (p1.X < p2.X)
{
return -1;
}
else if (p1.X > p2.X)
{
return 1;
}
else
{
return 0;
}
}
}
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
namespace Poly2Tri
{
public class PointOnEdgeException : NotImplementedException
{
public readonly TriangulationPoint A, B, C;
public PointOnEdgeException(string message, TriangulationPoint a, TriangulationPoint b, TriangulationPoint c)
: base(message)
{
A = a;
B = b;
C = c;
}
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System.Collections.Generic;
namespace Poly2Tri
{
public interface ITriangulatable
{
//IList<TriangulationPoint> Points { get; } // MM: Neither of these are used via interface (yet?)
IList<DelaunayTriangle> Triangles { get; }
TriangulationMode TriangulationMode { get; }
string FileName { get; set; }
bool DisplayFlipX { get; set; }
bool DisplayFlipY { get; set; }
float DisplayRotate { get; set; }
double Precision { get; set; }
double MinX { get; }
double MaxX { get; }
double MinY { get; }
double MaxY { get; }
Rect2D Bounds { get; }
void Prepare(TriangulationContext tcx);
void AddTriangle(DelaunayTriangle t);
void AddTriangles(IEnumerable<DelaunayTriangle> list);
void ClearTriangles();
}
}

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/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace Poly2Tri
{
public enum Orientation
{
CW,
CCW,
Collinear
}
}

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