/// <summary>
/// Conduct a clip operation on this profile.
/// </summary>
internal void Clip(IEnumerable <Profile> additionalHoles = null)
{
var clipper = new ClipperLib.Clipper();
clipper.AddPath(this.Perimeter.ToClipperPath(), ClipperLib.PolyType.ptSubject, true);
if (this.Voids != null)
{
clipper.AddPaths(this.Voids.Select(p => p.ToClipperPath()).ToList(), ClipperLib.PolyType.ptClip, true);
}
if (additionalHoles != null)
{
clipper.AddPaths(additionalHoles.Select(h => h.Perimeter.ToClipperPath()).ToList(), ClipperLib.PolyType.ptClip, true);
}
var solution = new List <List <ClipperLib.IntPoint> >();
var result = clipper.Execute(ClipperLib.ClipType.ctDifference, solution, ClipperLib.PolyFillType.pftEvenOdd);
// Completely disjoint polygons like a circular pipe
// profile will result in an empty solution.
if (solution.Count > 0)
{
var polys = solution.Select(s => s.ToPolygon()).ToArray();
this.Perimeter = polys[0];
this.Voids = polys.Skip(1).ToArray();
}
}
private void AddPoints(ClipperLib.Clipper clipper, IShape[] shapes, bool[] shouldInclude, ClipperLib.PolyType polyType)
{
for (var i = 0; i < shapes.Length; i++)
{
if (shouldInclude[i])
{
this.AddPoints(clipper, shapes[i], polyType);
}
}
}
public void ExecuteClip(IClip clip)
{
BlockSimplification.epsilon = (int64)(simplifyEpsilonPercent / 100f * blockSize * VectorEx.float2int64);
List <Vector2i> clipVertices = clip.GetVertices();
ClipBounds bounds = clip.GetBounds();
int x1 = Mathf.Max(0, (int)(bounds.lowerPoint.x / blockSize));
if (x1 > resolutionX - 1)
{
return;
}
int y1 = Mathf.Max(0, (int)(bounds.lowerPoint.y / blockSize));
if (y1 > resolutionY - 1)
{
return;
}
int x2 = Mathf.Min(resolutionX - 1, (int)(bounds.upperPoint.x / blockSize));
if (x2 < 0)
{
return;
}
int y2 = Mathf.Min(resolutionY - 1, (int)(bounds.upperPoint.y / blockSize));
if (y2 < 0)
{
return;
}
for (int x = x1; x <= x2; x++)
{
for (int y = y1; y <= y2; y++)
{
if (clip.CheckBlockOverlapping(new Vector2f((x + 0.5f) * blockSize, (y + 0.5f) * blockSize), blockSize))
{
DestructibleBlock block = blocks[x + resolutionX * y];
List <List <Vector2i> > solutions = new List <List <Vector2i> >();
ClipperLib.Clipper clipper = new ClipperLib.Clipper();
clipper.AddPolygons(block.Polygons, ClipperLib.PolyType.ptSubject);
clipper.AddPolygon(clipVertices, ClipperLib.PolyType.ptClip);
clipper.Execute(ClipperLib.ClipType.ctDifference, solutions,
ClipperLib.PolyFillType.pftNonZero, ClipperLib.PolyFillType.pftNonZero);
UpdateBlockBounds(x, y);
block.UpdateGeometryWithMoreVertices(solutions, width, height, depth);
}
}
}
}
private RawCharacterOutline InternalGetCharacterOutlineForCaching(char textChar, FontX font)
{
var glyphTypeface = font.InvariantDescriptionStringWithoutSizeInformation;
var rawOutline = GetRawCharacterOutline(textChar, font, FontSizeForCaching);
var clipperPolygonsInput = new List <List <ClipperLib.IntPoint> >();
var sharpPoints = new HashSet <ClipperLib.IntPoint>();
var allPoints = new HashSet <ClipperLib.IntPoint>(); // allPoints to determine whether after the simplification new points were added
foreach (var polygon in rawOutline.Outline)
{
foreach (var p in polygon.SharpPoints)
{
sharpPoints.Add(new ClipperLib.IntPoint(p.X * 65536, p.Y * 65536));
}
var clipperPolygon = new List <ClipperLib.IntPoint>(polygon.Points.Select((x) => new ClipperLib.IntPoint(x.X * 65536, x.Y * 65536)));
clipperPolygonsInput.Add(clipperPolygon);
foreach (var clipperPoint in clipperPolygon)
{
allPoints.Add(clipperPoint);
}
}
//clipperPolygons = ClipperLib.Clipper.SimplifyPolygons(clipperPolygons, ClipperLib.PolyFillType.pftEvenOdd);
var clipperPolygons = new ClipperLib.PolyTree();
var clipper = new ClipperLib.Clipper
{
StrictlySimple = true
};
clipper.AddPaths(clipperPolygonsInput, ClipperLib.PolyType.ptSubject, true);
clipper.Execute(ClipperLib.ClipType.ctUnion, clipperPolygons, ClipperLib.PolyFillType.pftNonZero, ClipperLib.PolyFillType.pftNegative);
var polygons = new List <PolygonClosedD2D>();
var dictClipperNodeToNode = new Dictionary <ClipperLib.PolyNode, PolygonClosedD2D>(); // helper dictionary
ClipperPolyTreeToPolygonListRecursively(clipperPolygons, sharpPoints, allPoints, polygons, dictClipperNodeToNode);
var result = rawOutline;
result.Outline = polygons;
return(result);
}
public void Clip(TurningChisel chisel)
{
if (polygon == null)
{
return;
}
List <Polygon> solution = new List <Polygon>();
ClipperLib.Clipper clipper = new ClipperLib.Clipper();
clipper.AddPolygon(polygon, ClipperLib.PolyType.ptSubject);
clipper.AddPolygon(chisel.Polygon, ClipperLib.PolyType.ptClip);
clipper.Execute(ClipperLib.ClipType.ctDifference, solution, ClipperLib.PolyFillType.pftNonZero, ClipperLib.PolyFillType.pftNonZero);
polygon = null;
if (solution.Count > 0)
{
Vector2i basePosition = transform.localPosition.ToVector2i();
polygon = null;
for (int i = 0; i < solution.Count; i++)
{
var poly = solution[i];
float xA = (float)(poly[1].X - basePosition.X);
float xB = (float)(poly[poly.Count - 2].X - basePosition.Y);
if (xA * xB < 0f)
{
polygon = poly;
}
else
{
StartCoroutine(CreateDetachedObject(poly));
}
}
}
if (polygon != null)
{
ExtractEdge();
PostShapeChange();
}
else
{
polygon = null;
ExtractEdge();
PostShapeChange();
}
}
private Zones.TPolygon[] CalcOutOfBoundsPoly(Zones.TPolygon Tile, Zones.TPolygon BoxRect, ClipperLib.ClipType clipType)
{
List <List <ClipperLib.IntPoint> > subj = new List <List <ClipperLib.IntPoint> >();
subj.Add(new List <ClipperLib.IntPoint>());
for (int i = 0; i < Tile.Dots.Length; i++)
{
subj[0].Add(new ClipperLib.IntPoint((long)Tile[i].X, (long)Tile[i].Y));
}
List <List <ClipperLib.IntPoint> > clip = new List <List <ClipperLib.IntPoint> >();
clip.Add(new List <ClipperLib.IntPoint>(4));
for (int i = 0; i < BoxRect.Dots.Length; i++)
{
clip[0].Add(new ClipperLib.IntPoint((long)BoxRect[i].X, (long)BoxRect[i].Y));
}
List <ClipperLib.ExPolygon> solution = new List <ClipperLib.ExPolygon>();
ClipperLib.Clipper c = new ClipperLib.Clipper();
c.AddPolygons(clip, ClipperLib.PolyType.ptSubject);
c.AddPolygons(subj, ClipperLib.PolyType.ptClip);
bool res = (c.Execute(clipType, solution)); // , ClipperLib.PolyFillType.pftEvenOdd, ClipperLib.PolyFillType.pftEvenOdd
if (res)
{
if (solution.Count > 0)
{
List <Zones.TPolygon> pols = new List <Zones.TPolygon>();
for (int s = 0; s < solution.Count; s++)
{
Zones.TPolygon poly = new Zones.TPolygon((ushort)solution[s].outer.Count);
for (int i = 0; i < poly.Dots.Length; i++)
{
poly[i] = new Zones.TPoint((double)solution[s].outer[i].X, (double)solution[s].outer[i].Y);
}
pols.Add(poly);
}
;
return(pols.ToArray());
}
}
;
return(null);
}
private double ClippedArea()
{
if (this.Voids == null || this.Voids.Count == 0)
{
return(this.Perimeter.Area());
}
var clipper = new ClipperLib.Clipper();
clipper.AddPath(this.Perimeter.ToClipperPath(), ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(this.Voids.Select(p => p.ToClipperPath()).ToList(), ClipperLib.PolyType.ptClip, true);
var solution = new List <List <ClipperLib.IntPoint> >();
clipper.Execute(ClipperLib.ClipType.ctDifference, solution, ClipperLib.PolyFillType.pftEvenOdd);
return(solution.Sum(s => ClipperLib.Clipper.Area(s)) / Math.Pow(1024.0, 2));
}
private void AddPoints(ClipperLib.Clipper clipper, IShape shape, ClipperLib.PolyType polyType)
{
foreach (var path in shape)
{
var points = path.AsSimpleLinearPath();
var clipperPoints = new List <ClipperLib.IntPoint>();
foreach (var point in points)
{
var p = point * ClipperScaleFactor;
clipperPoints.Add(new ClipperLib.IntPoint((long)p.X, (long)p.Y));
}
clipper.AddPath(
clipperPoints,
polyType,
path.IsClosed);
}
}
public static long ExecuteOriginalClipper(int testIterationCount, List <ClipExecutionData> executionData)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
for (var i = 0; i < testIterationCount; i++)
{
foreach (var clipPath in executionData)
{
var subject = new List <List <ClipperLib.IntPoint> >(
clipPath
.Subject
.Select(poly => new List <ClipperLib.IntPoint>(poly.Select(pt =>
new ClipperLib.IntPoint(
pt.X * Scale,
pt.Y * Scale)))));
var clip = new List <List <ClipperLib.IntPoint> >(
clipPath
.Clip
.Select(poly => new List <ClipperLib.IntPoint>(poly.Select(pt =>
new ClipperLib.IntPoint(
pt.X * Scale,
pt.Y * Scale)))));
var solution = new ClipperLib.PolyTree();
var clipper = new ClipperLib.Clipper();
clipper.AddPaths(subject, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(clip, ClipperLib.PolyType.ptClip, true);
// Convert performance test library operation enum to ClipperLib operation enum.
var operation = (ClipperLib.ClipType)Enum.Parse(typeof(ClipperLib.ClipType), $"ct{clipPath.Operation}", true);
Assert.IsTrue(clipper.Execute(operation, solution));
}
}
stopwatch.Stop();
return(stopwatch.Elapsed.Ticks);
}
/// <summary>
/// Tessellate the Floor.
/// </summary>
public Mesh Mesh()
{
var clipper = new ClipperLib.Clipper();
clipper.AddPath(this._profile.Perimeter.ToClipperPath(), ClipperLib.PolyType.ptSubject, true);
if (this._profile.Voids != null)
{
clipper.AddPaths(this._profile.Voids.Select(p => p.ToClipperPath()).ToList(), ClipperLib.PolyType.ptClip, true);
}
var solution = new List <List <ClipperLib.IntPoint> >();
var result = clipper.Execute(ClipperLib.ClipType.ctDifference, solution, ClipperLib.PolyFillType.pftEvenOdd);
var polys = solution.Select(s => s.ToPolygon()).ToList();
if (polys.Count > 1)
{
return(Hypar.Geometry.Mesh.Extrude(polys.First(), this.ElementType.Thickness, polys.Skip(1).ToList(), true));
}
else
{
return(Hypar.Geometry.Mesh.Extrude(polys.First(), this.ElementType.Thickness, null, true));
}
}
/// <summary>
/// Generate Colliders based on Tile Collisions
/// </summary>
/// <param name="isTrigger">True for Trigger Collider, false otherwise</param>
/// <param name="zDepth">Z Depth of the collider.</param>
/// <param name="colliderWidth">Width of the collider, in Units</param>
/// <param name="used2DColider">True to generate a 2D collider, false to generate a 3D collider.</param>
/// <param name="innerCollision">If true, calculate normals facing the anchor of the collider (inside collisions), else, outside collisions.</param>
/// <returns>A GameObject containing all generated colliders</returns>
public GameObject GenerateTileCollisions(bool used2DColider = true, bool isTrigger = false, float zDepth = 0, float colliderWidth = 1, bool innerCollision = false)
{
GameObject tileColisions = new GameObject("Tile Collisions");
tileColisions.transform.parent = MapObject.transform;
tileColisions.transform.localPosition = Vector3.zero;
ClipperLib.Clipper clipper = new ClipperLib.Clipper();
List<List<ClipperLib.IntPoint>> pathsList = new List<List<ClipperLib.IntPoint>>();
List<List<ClipperLib.IntPoint>> solution = new List<List<ClipperLib.IntPoint>>();
// Iterate over each Tile Layer, grab all TileObjects inside this layer and use their Paths with ClipperLib to generate one polygon collider
foreach (var layer in Layers)
{
if (layer is TileLayer)
{
clipper.Clear();
solution.Clear();
pathsList.Clear();
TileLayer tileLayer = layer as TileLayer;
for (int x = 0; x < tileLayer.Tiles.Width; x++)
{
for (int y = 0; y < tileLayer.Tiles.Height; y++)
{
Tile t = tileLayer.Tiles[x, y];
if (t == null || t.TileSet == null || t.TileSet.TilesObjects == null)
continue;
if (t.TileSet.TilesObjects.ContainsKey(t.OriginalID))
{
List<TileObject> tileObjs = t.TileSet.TilesObjects[t.OriginalID];
foreach (var tileObj in tileObjs)
{
pathsList.Add(tileObj.GetPath(x, y, t.SpriteEffects, _tileObjectEllipsePrecision));
}
}
}
}
// Add the paths to be merged to ClipperLib
clipper.AddPaths(pathsList, ClipperLib.PolyType.ptSubject, true);
// Merge it!
//clipper.PreserveCollinear = false;
//clipper.ReverseSolution = true;
clipper.StrictlySimple = _simpleTileObjectCalculation;
if (!clipper.Execute(ClipperLib.ClipType.ctUnion, solution))
continue;
clipper.Execute(ClipperLib.ClipType.ctUnion, solution);
// Now solution should contain all vertices of the collision object, but they are still multiplied by TileObject.ClipperScale!
#region Implementation of increase and decrease offset polygon.
if(_simpleTileObjectCalculation == false) {
// Link of the example of ClipperLib:
// http://www.angusj.com/delphi/clipper/documentation/Docs/Units/ClipperLib/Classes/ClipperOffset/_Body.htm
ClipperLib.ClipperOffset co = new ClipperLib.ClipperOffset(_clipperMiterLimit,_clipperArcTolerance);
foreach(List<ClipperLib.IntPoint> item in solution) {
co.AddPath(item, _clipperJoinType,_clipperEndType);
}
solution.Clear();
co.Execute(ref solution, _clipperDeltaOffset*TileObject.ClipperScale);
}
#endregion
// Generate this path's collision
GameObject newCollider = new GameObject("Tile Collisions " + layer.Name);
newCollider.transform.parent = tileColisions.transform;
newCollider.transform.localPosition = new Vector3(0, 0, zDepth);
// Finally, generate the edge collider
int counter = 0;
for (int i = 0; i < solution.Count; i++)
{
if (solution[i].Count < 1)
continue;
List<Vector2> points = new List<Vector2>();
for (int j = 0; j < solution[i].Count; j++)
{
points.Add(
new Vector2(
solution[i][j].X / (float)TileObject.ClipperScale,
solution[i][j].Y / (float)TileObject.ClipperScale
)
);
}
if (used2DColider)
Generate2DTileCollision(tileLayer, counter, newCollider.transform, points, isTrigger, zDepth);
else
Generate3DTileCollision(tileLayer, counter, newCollider.transform, points, isTrigger, zDepth, colliderWidth, innerCollision);
counter++;
}
newCollider.isStatic = true;
}
}
return tileColisions;
}
private RawCharacterOutline InternalGetCharacterOutlineForCaching(char textChar, FontX font)
{
var glyphTypeface = font.InvariantDescriptionStringWithoutSizeInformation;
var rawOutline = GetRawCharacterOutline(textChar, font, FontSizeForCaching);
List<List<ClipperLib.IntPoint>> clipperPolygonsInput = new List<List<ClipperLib.IntPoint>>();
var sharpPoints = new HashSet<ClipperLib.IntPoint>();
var allPoints = new HashSet<ClipperLib.IntPoint>(); // allPoints to determine whether after the simplification new points were added
foreach (var polygon in rawOutline.Outline)
{
foreach (var p in polygon.SharpPoints)
{
sharpPoints.Add(new ClipperLib.IntPoint(p.X * 65536, p.Y * 65536));
}
var clipperPolygon = new List<ClipperLib.IntPoint>(polygon.Points.Select((x) => new ClipperLib.IntPoint(x.X * 65536, x.Y * 65536)));
clipperPolygonsInput.Add(clipperPolygon);
foreach (var clipperPoint in clipperPolygon)
allPoints.Add(clipperPoint);
}
//clipperPolygons = ClipperLib.Clipper.SimplifyPolygons(clipperPolygons, ClipperLib.PolyFillType.pftEvenOdd);
var clipperPolygons = new ClipperLib.PolyTree();
ClipperLib.Clipper clipper = new ClipperLib.Clipper();
clipper.StrictlySimple = true;
clipper.AddPaths(clipperPolygonsInput, ClipperLib.PolyType.ptSubject, true);
clipper.Execute(ClipperLib.ClipType.ctUnion, clipperPolygons, ClipperLib.PolyFillType.pftNonZero, ClipperLib.PolyFillType.pftNegative);
var polygons = new List<PolygonClosedD2D>();
var dictClipperNodeToNode = new Dictionary<ClipperLib.PolyNode, PolygonClosedD2D>(); // helper dictionary
ClipperPolyTreeToPolygonListRecursively(clipperPolygons, sharpPoints, allPoints, polygons, dictClipperNodeToNode);
var result = rawOutline;
result.Outline = polygons;
return result;
}
public static ClipperLib.PolyTree ExecuteClipper(TmxMap tmxMap, TmxLayer tmxLayer, TransformPointFunc xfFunc, ProgressFunc progFunc)
{
// The "fullClipper" combines the clipper results from the smaller pieces
ClipperLib.Clipper fullClipper = new ClipperLib.Clipper();
// From the perspective of Clipper lines are polygons too
// Closed paths == polygons
// Open paths == lines
var polygonGroups = from y in Enumerable.Range(0, tmxLayer.Height)
from x in Enumerable.Range(0, tmxLayer.Width)
let rawTileId = tmxLayer.GetRawTileIdAt(x, y)
let tileId = TmxMath.GetTileIdWithoutFlags(rawTileId)
where tileId != 0
let tile = tmxMap.Tiles[tileId]
from polygon in tile.ObjectGroup.Objects
where (polygon as TmxHasPoints) != null
let groupX = x / LayerClipper.GroupBySize
let groupY = y / LayerClipper.GroupBySize
group new
{
PositionOnMap = tmxMap.GetMapPositionAt(x, y, tile),
HasPointsInterface = polygon as TmxHasPoints,
TmxObjectInterface = polygon,
IsFlippedDiagnoally = TmxMath.IsTileFlippedDiagonally(rawTileId),
IsFlippedHorizontally = TmxMath.IsTileFlippedHorizontally(rawTileId),
IsFlippedVertically = TmxMath.IsTileFlippedVertically(rawTileId),
TileCenter = new PointF(tile.TileSize.Width * 0.5f, tile.TileSize.Height * 0.5f),
}
by Tuple.Create(groupX, groupY);
int groupIndex = 0;
int groupCount = polygonGroups.Count();
foreach (var polyGroup in polygonGroups)
{
if (groupIndex % 5 == 0)
{
progFunc(String.Format("Clipping '{0}' polygons: {1}%", tmxLayer.Name, (groupIndex / (float)groupCount) * 100));
}
groupIndex++;
// The "groupClipper" clips the polygons in a smaller part of the world
ClipperLib.Clipper groupClipper = new ClipperLib.Clipper();
// Add all our polygons to the Clipper library so it can reduce all the polygons to a (hopefully small) number of paths
foreach (var poly in polyGroup)
{
// Create a clipper library polygon out of each and add it to our collection
ClipperPolygon clipperPolygon = new ClipperPolygon();
// Our points may be transformed due to tile flipping/rotation
// Before we transform them we put all the points into local space relative to the tile
SizeF offset = new SizeF(poly.TmxObjectInterface.Position);
PointF[] transformedPoints = poly.HasPointsInterface.Points.Select(pt => PointF.Add(pt, offset)).ToArray();
// Now transform the points relative to the tile
TmxMath.TransformPoints(transformedPoints, poly.TileCenter, poly.IsFlippedDiagnoally, poly.IsFlippedHorizontally, poly.IsFlippedVertically);
foreach (var pt in transformedPoints)
{
float x = poly.PositionOnMap.X + pt.X;
float y = poly.PositionOnMap.Y + pt.Y;
ClipperLib.IntPoint point = xfFunc(x, y);
clipperPolygon.Add(point);
}
// Because of Unity's cooridnate system, the winding order of the polygons must be reversed
clipperPolygon.Reverse();
// Add the "subject"
groupClipper.AddPath(clipperPolygon, ClipperLib.PolyType.ptSubject, poly.HasPointsInterface.ArePointsClosed());
}
// Get a solution for this group
ClipperLib.PolyTree solution = new ClipperLib.PolyTree();
groupClipper.Execute(ClipperLib.ClipType.ctUnion, solution, LayerClipper.SubjectFillRule, LayerClipper.ClipFillRule);
// Combine the solutions into the full clipper
fullClipper.AddPaths(ClipperLib.Clipper.ClosedPathsFromPolyTree(solution), ClipperLib.PolyType.ptSubject, true);
fullClipper.AddPaths(ClipperLib.Clipper.OpenPathsFromPolyTree(solution), ClipperLib.PolyType.ptSubject, false);
}
progFunc(String.Format("Clipping '{0}' polygons: 100%", tmxLayer.Name));
ClipperLib.PolyTree fullSolution = new ClipperLib.PolyTree();
fullClipper.Execute(ClipperLib.ClipType.ctUnion, fullSolution, LayerClipper.SubjectFillRule, LayerClipper.ClipFillRule);
return(fullSolution);
}
public static List<List<Vector2>> GenerateClipperPathPoints(TileLayer tileLayer,
bool simpleTileObjectCalculation = true,
double clipperArcTolerance = 0.25, double clipperMiterLimit = 2.0,
ClipperLib.JoinType clipperJoinType = ClipperLib.JoinType.jtRound,
ClipperLib.EndType clipperEndType = ClipperLib.EndType.etClosedPolygon,
float clipperDeltaOffset = 0)
{
ClipperLib.Clipper clipper = new ClipperLib.Clipper();
List<List<ClipperLib.IntPoint>> pathsList = new List<List<ClipperLib.IntPoint>>();
List<List<ClipperLib.IntPoint>> solution = new List<List<ClipperLib.IntPoint>>();
List<List<Vector2>> points = new List<List<Vector2>>();
for (int x = 0; x < tileLayer.Tiles.Width; x++)
{
for (int y = 0; y < tileLayer.Tiles.Height; y++)
{
Tile t = tileLayer.Tiles[x, y];
if (t == null || t.TileSet == null || t.TileSet.TilesObjects == null)
continue;
if (t.TileSet.TilesObjects.ContainsKey(t.OriginalID))
{
List<TileObject> tileObjs = t.TileSet.TilesObjects[t.OriginalID];
foreach (var tileObj in tileObjs)
{
pathsList.Add(tileObj.GetPath(x, y, t.SpriteEffects, tileLayer.BaseMap.MapRenderParameter.TileWidth, tileLayer.BaseMap.MapRenderParameter.TileHeight));
}
}
}
}
// Add the paths to be merged to ClipperLib
clipper.AddPaths(pathsList, ClipperLib.PolyType.ptSubject, true);
// Merge it!
//clipper.PreserveCollinear = false;
//clipper.ReverseSolution = true;
clipper.StrictlySimple = simpleTileObjectCalculation;
if (!clipper.Execute(ClipperLib.ClipType.ctUnion, solution))
return points;
clipper.Execute(ClipperLib.ClipType.ctUnion, solution);
// Now solution should contain all vertices of the collision object, but they are still multiplied by TileObject.ClipperScale!
#region Implementation of increase and decrease offset polygon.
if (simpleTileObjectCalculation == false)
{
// Link of the example of ClipperLib:
// http://www.angusj.com/delphi/clipper/documentation/Docs/Units/ClipperLib/Classes/ClipperOffset/_Body.htm
ClipperLib.ClipperOffset co = new ClipperLib.ClipperOffset(clipperMiterLimit, clipperArcTolerance);
foreach (List<ClipperLib.IntPoint> item in solution)
{
co.AddPath(item, clipperJoinType, clipperEndType);
}
solution.Clear();
co.Execute(ref solution, clipperDeltaOffset * TileObject.ClipperScale);
}
#endregion
for (int i = 0; i < solution.Count; i++)
{
if (solution[i].Count < 1)
continue;
points.Add(new List<Vector2>());
for (int j = 0; j < solution[i].Count; j++)
{
points[i].Add(
new Vector2(
solution[i][j].X / (float)TileObject.ClipperScale,
solution[i][j].Y / (float)TileObject.ClipperScale
)
);
}
}
return points;
}
public void CalculatePolygons(
double? overrideRelativeStructureWidth,
out List<List<ClipperLib.IntPoint>> framePolygon,
out List<List<ClipperLib.IntPoint>> insetPolygon,
out List<List<ClipperLib.IntPoint>> fillPolygon)
{
insetPolygon = null;
framePolygon = null;
fillPolygon = null;
// get outer polygon
var outerPolygon = GetCopyOfOuterPolygon();
List<List<ClipperLib.IntPoint>> innerFramePolygon = null;
double relativeStructureWidth = overrideRelativeStructureWidth ?? _relativeStructureWidth;
if (null != _frame && relativeStructureWidth > 0)
{
// get frame polygon
innerFramePolygon = _frame.GetCopyOfClipperPolygon(relativeStructureWidth, outerPolygon);
}
if (null != _inset)
{
// get inset polygon
insetPolygon = _inset.GetCopyOfClipperPolygon(relativeStructureWidth);
}
// if null != insetPolygon
// clip with innerPolygon ?? outerPolygon;
// store clipped inset polygon / draw it with inset color
if (null != insetPolygon)
{
var clipper = new ClipperLib.Clipper();
var solution = new List<List<ClipperLib.IntPoint>>();
clipper.AddPaths(insetPolygon, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(innerFramePolygon ?? outerPolygon, ClipperLib.PolyType.ptClip, true);
clipper.Execute(ClipperLib.ClipType.ctIntersection, solution);
insetPolygon = solution;
}
// if null != framePolygon
// clip with outer polygon ????
// draw combined path of outer polygon and frame polygon as a hole with frame color
if (null != innerFramePolygon)
{
var clipper = new ClipperLib.Clipper();
clipper.AddPaths(outerPolygon, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(innerFramePolygon, ClipperLib.PolyType.ptClip, true);
framePolygon = new List<List<ClipperLib.IntPoint>>();
clipper.Execute(ClipperLib.ClipType.ctDifference, framePolygon);
}
// calculate
// if null != insetPolygon
// (framePolygon ?? outerPolygon ) - insetPolygon
// or else use (framePolygon ?? outerPolygon ) directly
// draw result with fillColor
if (null != insetPolygon)
{
var clipper = new ClipperLib.Clipper();
clipper.AddPaths(innerFramePolygon ?? outerPolygon, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(insetPolygon, ClipperLib.PolyType.ptClip, true);
fillPolygon = new List<List<ClipperLib.IntPoint>>();
clipper.Execute(ClipperLib.ClipType.ctDifference, fillPolygon);
}
else
{
fillPolygon = innerFramePolygon ?? outerPolygon;
}
}
public void CalculatePolygons(
double?overrideRelativeStructureWidth,
out List <List <ClipperLib.IntPoint> > framePolygon,
out List <List <ClipperLib.IntPoint> > insetPolygon,
out List <List <ClipperLib.IntPoint> > fillPolygon)
{
insetPolygon = null;
framePolygon = null;
fillPolygon = null;
// get outer polygon
var outerPolygon = GetCopyOfOuterPolygon();
List <List <ClipperLib.IntPoint> > innerFramePolygon = null;
double relativeStructureWidth = overrideRelativeStructureWidth ?? _relativeStructureWidth;
if (null != _frame && relativeStructureWidth > 0)
{
// get frame polygon
innerFramePolygon = _frame.GetCopyOfClipperPolygon(relativeStructureWidth, outerPolygon);
}
if (null != _inset)
{
// get inset polygon
insetPolygon = _inset.GetCopyOfClipperPolygon(relativeStructureWidth);
}
// if null != insetPolygon
// clip with innerPolygon ?? outerPolygon;
// store clipped inset polygon / draw it with inset color
if (null != insetPolygon)
{
var clipper = new ClipperLib.Clipper();
var solution = new List <List <ClipperLib.IntPoint> >();
clipper.AddPaths(insetPolygon, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(innerFramePolygon ?? outerPolygon, ClipperLib.PolyType.ptClip, true);
clipper.Execute(ClipperLib.ClipType.ctIntersection, solution);
insetPolygon = solution;
}
// if null != framePolygon
// clip with outer polygon ????
// draw combined path of outer polygon and frame polygon as a hole with frame color
if (null != innerFramePolygon)
{
var clipper = new ClipperLib.Clipper();
clipper.AddPaths(outerPolygon, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(innerFramePolygon, ClipperLib.PolyType.ptClip, true);
framePolygon = new List <List <ClipperLib.IntPoint> >();
clipper.Execute(ClipperLib.ClipType.ctDifference, framePolygon);
}
// calculate
// if null != insetPolygon
// (framePolygon ?? outerPolygon ) - insetPolygon
// or else use (framePolygon ?? outerPolygon ) directly
// draw result with fillColor
if (null != insetPolygon)
{
var clipper = new ClipperLib.Clipper();
clipper.AddPaths(innerFramePolygon ?? outerPolygon, ClipperLib.PolyType.ptSubject, true);
clipper.AddPaths(insetPolygon, ClipperLib.PolyType.ptClip, true);
fillPolygon = new List <List <ClipperLib.IntPoint> >();
clipper.Execute(ClipperLib.ClipType.ctDifference, fillPolygon);
}
else
{
fillPolygon = innerFramePolygon ?? outerPolygon;
}
}
public static Mesh P2TTriangulate(TTFTextOutline outline, Mesh outMesh)
{
float Z = outline.Min.z; // Assume all vertices have the same Z coord
List <List <ClipperLib.IntPoint> > ipolygones = new List <List <ClipperLib.IntPoint> >();
foreach (TTFTextOutline.Boundary lv in outline.boundaries)
{
if (Intersection.isSimple(lv))
{
ipolygones.Add(Vec2LIP(lv));
}
else
{
//Debug.LogWarning("Complex Contour");
try {
foreach (List <Vector3> p in Intersection.Decompose(lv)) // decompose outlines
{
ipolygones.Add(Vec2LIP(p));
}
} catch (System.Exception) { // parallel segments
//Debug.LogWarning("Bad contour:" + ex.ToString());
}
}
}
ClipperLib.Clipper c = new ClipperLib.Clipper();
List <ClipperLib.ExPolygon> res = new List <ClipperLib.ExPolygon>();
c.AddPolygons(ipolygones, ClipperLib.PolyType.ptSubject);
c.Execute(ClipperLib.ClipType.ctUnion, res, ClipperLib.PolyFillType.pftNonZero, ClipperLib.PolyFillType.pftNonZero);
//c.Execute(ClipperLib.ClipType.ctUnion,res,ClipperLib.PolyFillType.pftEvenOdd,ClipperLib.PolyFillType.pftEvenOdd);
//c.Execute(ClipperLib.ClipType.ctUnion,res,ClipperLib.PolyFillType.pftPositive,ClipperLib.PolyFillType.pftPositive);
//c.Execute(ClipperLib.ClipType.ctUnion,res,ClipperLib.PolyFillType.pftPositive,ClipperLib.PolyFillType.pftPositive);
List <Vector3> vertices = new List <Vector3>();
List <int> triangles = new List <int>();
Dictionary <Vector3, int> vDic = new Dictionary <Vector3, int>();
foreach (ClipperLib.ExPolygon p in res)
{
Vector3 mv = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
Vector3 Mv = new Vector3(float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity);
List <Vector3> np = LIP2Vec(p.outer);
for (int i = 0; i < np.Count; i++)
{
mv = Vector3.Min(mv, np[i]);
Mv = Vector3.Max(Mv, np[i]);
}
Vector3 sv = (Mv - mv);
//int oc=np.Count;
np = Simplify(np, 0.05f);
// set of all vertices for this triangulation step
HashSet <Vector3> whole = new HashSet <Vector3>();
if ((np.Count >= 4) && ((sv.x * sv.y) > 0.001f) && Intersection.isSimple(np) && !HasDup(np))
{
foreach (Vector3 v in np)
{
whole.Add(v);
}
Polygon cp = new Polygon(Vec2PP(np));
foreach (List <ClipperLib.IntPoint> h in p.holes)
{
List <Vector3> ph = Simplify(LIP2Vec(h), 0.05f);
// Poli2tri doesnt support intersection and dupplicate vertices
// skip all holes which does not respect thoses conditions
if ((!Intersection.isSimple(ph)) || HasDup(ph))
{
//Debug.LogWarning("Skipping Complex hole");
}
else if (ContainsAny(whole, ph))
{
//Debug.LogWarning("Duplicate vertices in holes");
}
else
{
foreach (Vector3 v in ph)
{
whole.Add(v);
}
cp.AddHole(new Polygon(Vec2PP(ph)));
}
}
try {
P2T.Triangulate(cp);
foreach (DelaunayTriangle dt in cp.Triangles)
{
Vector3 v;
int idx;
for (int i = 0; i < 3; ++i)
{
v = new Vector3(dt.Points[i].Xf, dt.Points[i].Yf, Z);
if (!vDic.TryGetValue(v, out idx))
{
idx = vertices.Count;
vertices.Add(v);
vDic.Add(v, idx);
}
triangles.Add(idx);
}
}
} catch (System.Exception e) {
Debug.LogWarning(e);
}
}
else
{
//Debug.LogWarning("Skip Polygon: count=" + np.Count + " size=" + sv + " simple=" + Intersection.isSimple(np) + " dup:" + HasDup(np));
}
}
outMesh.Clear();
outMesh.vertices = vertices.ToArray();
outMesh.triangles = triangles.ToArray();
outMesh.RecalculateBounds();
outMesh.RecalculateNormals();
outMesh.Optimize();
return(outMesh);
}
public static ClipperLib.PolyTree ExecuteClipper(TmxMap tmxMap, TmxLayer tmxLayer, TransformPointFunc xfFunc, ProgressFunc progFunc)
{
// The "fullClipper" combines the clipper results from the smaller pieces
ClipperLib.Clipper fullClipper = new ClipperLib.Clipper();
// Limit to polygon "type" that matches the collision layer name (unless we are overriding the whole layer to a specific Unity Layer Name)
bool usingUnityLayerOverride = !String.IsNullOrEmpty(tmxLayer.UnityLayerOverrideName);
// From the perspective of Clipper lines are polygons too
// Closed paths == polygons
// Open paths == lines
Dictionary <TupleInt2, List <PolygonGroup> > polygonGroups = new Dictionary <TupleInt2, List <PolygonGroup> >();
foreach (int y in Enumerable.Range(0, tmxLayer.Height))
{
foreach (int x in Enumerable.Range(0, tmxLayer.Width))
{
uint rawTileId = tmxLayer.GetRawTileIdAt(x, y);
if (rawTileId == 0)
{
continue;
}
uint tileId = TmxMath.GetTileIdWithoutFlags(rawTileId);
TmxTile tile = tmxMap.Tiles[tileId];
foreach (TmxObject polygon in tile.ObjectGroup.Objects)
{
if (typeof(TmxHasPoints).IsAssignableFrom(polygon.GetType()) &&
(usingUnityLayerOverride || String.Compare(polygon.Type, tmxLayer.Name, true) == 0))
{
int groupX = x / LayerClipper.GroupBySize;
int groupY = y / LayerClipper.GroupBySize;
PolygonGroup poly = new PolygonGroup();
poly.PositionOnMap = tmxMap.GetMapPositionAt(x, y, tile);
poly.HasPointsInterface = polygon as TmxHasPoints;
poly.TmxObjectInterface = polygon;
poly.IsFlippedDiagnoally = TmxMath.IsTileFlippedDiagonally(rawTileId);
poly.IsFlippedHorizontally = TmxMath.IsTileFlippedHorizontally(rawTileId);
poly.IsFlippedVertically = TmxMath.IsTileFlippedVertically(rawTileId);
poly.TileCenter = new PointF(tile.TileSize.Width * 0.5f, tile.TileSize.Height * 0.5f);
TupleInt2 key = new TupleInt2(groupX, groupY);
if (!polygonGroups.ContainsKey(key))
{
polygonGroups[key] = new List <PolygonGroup>();
}
polygonGroups[key].Add(poly);
}
}
}
}
// Tuple not supported in Mono 2.0 so doing this the old fashioned way, sorry
//var polygonGroups = from y in Enumerable.Range(0, tmxLayer.Height)
// from x in Enumerable.Range(0, tmxLayer.Width)
// let rawTileId = tmxLayer.GetRawTileIdAt(x, y)
// where rawTileId != 0
// let tileId = TmxMath.GetTileIdWithoutFlags(rawTileId)
// let tile = tmxMap.Tiles[tileId]
// from polygon in tile.ObjectGroup.Objects
// where (polygon as TmxHasPoints) != null
// where usingUnityLayerOverride || String.Compare(polygon.Type, tmxLayer.Name, true) == 0
// let groupX = x / LayerClipper.GroupBySize
// let groupY = y / LayerClipper.GroupBySize
// group new
// {
// PositionOnMap = tmxMap.GetMapPositionAt(x, y, tile),
// HasPointsInterface = polygon as TmxHasPoints,
// TmxObjectInterface = polygon,
// IsFlippedDiagnoally = TmxMath.IsTileFlippedDiagonally(rawTileId),
// IsFlippedHorizontally = TmxMath.IsTileFlippedHorizontally(rawTileId),
// IsFlippedVertically = TmxMath.IsTileFlippedVertically(rawTileId),
// TileCenter = new PointF(tile.TileSize.Width * 0.5f, tile.TileSize.Height * 0.5f),
// }
// by Tuple.Create(groupX, groupY);
int groupIndex = 0;
int groupCount = polygonGroups.Count();
foreach (TupleInt2 key in polygonGroups.Keys)
{
if (groupIndex % 5 == 0)
{
progFunc(String.Format("Clipping '{0}' polygons: {1}%", tmxLayer.Name, (groupIndex / (float)groupCount) * 100));
}
groupIndex++;
// The "groupClipper" clips the polygons in a smaller part of the world
ClipperLib.Clipper groupClipper = new ClipperLib.Clipper();
// Add all our polygons to the Clipper library so it can reduce all the polygons to a (hopefully small) number of paths
foreach (PolygonGroup poly in polygonGroups[key])
{
// Create a clipper library polygon out of each and add it to our collection
ClipperPolygon clipperPolygon = new ClipperPolygon();
// Our points may be transformed due to tile flipping/rotation
// Before we transform them we put all the points into local space relative to the tile
SizeF offset = new SizeF(poly.TmxObjectInterface.Position);
PointF[] transformedPoints = poly.HasPointsInterface.Points.Select(pt => PointF.Add(pt, offset)).ToArray();
// Now transform the points relative to the tile
TmxMath.TransformPoints(transformedPoints, poly.TileCenter, poly.IsFlippedDiagnoally, poly.IsFlippedHorizontally, poly.IsFlippedVertically);
foreach (var pt in transformedPoints)
{
float x = poly.PositionOnMap.X + pt.X;
float y = poly.PositionOnMap.Y + pt.Y;
ClipperLib.IntPoint point = xfFunc(x, y);
clipperPolygon.Add(point);
}
// Because of Unity's cooridnate system, the winding order of the polygons must be reversed
clipperPolygon.Reverse();
// Add the "subject"
groupClipper.AddPath(clipperPolygon, ClipperLib.PolyType.ptSubject, poly.HasPointsInterface.ArePointsClosed());
}
// Get a solution for this group
ClipperLib.PolyTree solution = new ClipperLib.PolyTree();
groupClipper.Execute(ClipperLib.ClipType.ctUnion, solution, LayerClipper.SubjectFillRule, LayerClipper.ClipFillRule);
// Combine the solutions into the full clipper
fullClipper.AddPaths(ClipperLib.Clipper.ClosedPathsFromPolyTree(solution), ClipperLib.PolyType.ptSubject, true);
fullClipper.AddPaths(ClipperLib.Clipper.OpenPathsFromPolyTree(solution), ClipperLib.PolyType.ptSubject, false);
}
progFunc(String.Format("Clipping '{0}' polygons: 100%", tmxLayer.Name));
ClipperLib.PolyTree fullSolution = new ClipperLib.PolyTree();
fullClipper.Execute(ClipperLib.ClipType.ctUnion, fullSolution, LayerClipper.SubjectFillRule, LayerClipper.ClipFillRule);
return(fullSolution);
}
public static ClipperLib.PolyTree ExecuteClipper(TmxMap tmxMap, TmxLayer tmxLayer, TransformPointFunc xfFunc, ProgressFunc progFunc)
{
// The "fullClipper" combines the clipper results from the smaller pieces
ClipperLib.Clipper fullClipper = new ClipperLib.Clipper();
// From the perspective of Clipper lines are polygons too
// Closed paths == polygons
// Open paths == lines
var polygonGroups = from y in Enumerable.Range(0, tmxLayer.Height)
from x in Enumerable.Range(0, tmxLayer.Width)
let rawTileId = tmxLayer.GetRawTileIdAt(x, y)
let tileId = TmxMath.GetTileIdWithoutFlags(rawTileId)
where tileId != 0
let tile = tmxMap.Tiles[tileId]
from polygon in tile.ObjectGroup.Objects
where (polygon as TmxHasPoints) != null
let groupX = x / LayerClipper.GroupBySize
let groupY = y / LayerClipper.GroupBySize
group new
{
PositionOnMap = tmxMap.GetMapPositionAt(x, y, tile),
HasPointsInterface = polygon as TmxHasPoints,
TmxObjectInterface = polygon,
IsFlippedDiagnoally = TmxMath.IsTileFlippedDiagonally(rawTileId),
IsFlippedHorizontally = TmxMath.IsTileFlippedHorizontally(rawTileId),
IsFlippedVertically = TmxMath.IsTileFlippedVertically(rawTileId),
TileCenter = new PointF(tile.TileSize.Width * 0.5f, tile.TileSize.Height * 0.5f),
}
by Tuple.Create(groupX, groupY);
int groupIndex = 0;
int groupCount = polygonGroups.Count();
foreach (var polyGroup in polygonGroups)
{
if (groupIndex % 5 == 0)
{
progFunc(String.Format("Clipping '{0}' polygons: {1}%", tmxLayer.Name, (groupIndex / (float)groupCount) * 100));
}
groupIndex++;
// The "groupClipper" clips the polygons in a smaller part of the world
ClipperLib.Clipper groupClipper = new ClipperLib.Clipper();
// Add all our polygons to the Clipper library so it can reduce all the polygons to a (hopefully small) number of paths
foreach (var poly in polyGroup)
{
// Create a clipper library polygon out of each and add it to our collection
ClipperPolygon clipperPolygon = new ClipperPolygon();
// Our points may be transformed due to tile flipping/rotation
// Before we transform them we put all the points into local space relative to the tile
SizeF offset = new SizeF(poly.TmxObjectInterface.Position);
PointF[] transformedPoints = poly.HasPointsInterface.Points.Select(pt => PointF.Add(pt, offset)).ToArray();
// Now transform the points relative to the tile
TmxMath.TransformPoints(transformedPoints, poly.TileCenter, poly.IsFlippedDiagnoally, poly.IsFlippedHorizontally, poly.IsFlippedVertically);
foreach (var pt in transformedPoints)
{
float x = poly.PositionOnMap.X + pt.X;
float y = poly.PositionOnMap.Y + pt.Y;
ClipperLib.IntPoint point = xfFunc(x, y);
clipperPolygon.Add(point);
}
// Because of Unity's cooridnate system, the winding order of the polygons must be reversed
clipperPolygon.Reverse();
// Add the "subject"
groupClipper.AddPath(clipperPolygon, ClipperLib.PolyType.ptSubject, poly.HasPointsInterface.ArePointsClosed());
}
// Get a solution for this group
ClipperLib.PolyTree solution = new ClipperLib.PolyTree();
groupClipper.Execute(ClipperLib.ClipType.ctUnion, solution, LayerClipper.SubjectFillRule, LayerClipper.ClipFillRule);
// Combine the solutions into the full clipper
fullClipper.AddPaths(ClipperLib.Clipper.ClosedPathsFromPolyTree(solution), ClipperLib.PolyType.ptSubject, true);
fullClipper.AddPaths(ClipperLib.Clipper.OpenPathsFromPolyTree(solution), ClipperLib.PolyType.ptSubject, false);
}
progFunc(String.Format("Clipping '{0}' polygons: 100%", tmxLayer.Name));
ClipperLib.PolyTree fullSolution = new ClipperLib.PolyTree();
fullClipper.Execute(ClipperLib.ClipType.ctUnion, fullSolution, LayerClipper.SubjectFillRule, LayerClipper.ClipFillRule);
return fullSolution;
}
public override List <List <Polygon> > GetPolygons()
{
// if (FillEnabled == false) return new List<List<Polygon>>();
List <Polygon> CombinedPolygons = new List <Polygon>();
Polygons solution = new Polygons();
ClipperLib.Clipper cp = new ClipperLib.Clipper();
int first = 0;
foreach (var p in TransformedPolygons)
{
Polygons clips = new Polygons();
List <ClipperLib.IntPoint> clipperpoly = new List <ClipperLib.IntPoint>();
foreach (var v in p.Vertices)
{
clipperpoly.Add(new ClipperLib.IntPoint((long)(v.x * 100000), (long)(v.y * 100000)));
}
clips.Add(clipperpoly);
// cp.AddPolygons(clips, (first != 0)?PolyType.ptClip:PolyType.ptSubject);
cp.AddPolygons(clips, ClipperLib.PolyType.ptSubject);
first++;
}
cp.Execute(ClipperLib.ClipType.ctUnion, solution, FillRule, FillRule);
foreach (var l in solution)
{
Polygon p = new Polygon("SVGPathCollection");
foreach (var v in l)
{
p.Vertices.Add(new vec2(v.X / 100000.0, v.Y / 100000.0));
}
p.r = FillColor.R;
p.g = FillColor.G;
p.b = FillColor.B;
// p.a = (byte)(FillColor.A/3);
// if (FillColor != Color.White) p.a = 0;
p.a = FillColor.A;
p.Filled = FillEnabled;
p.Stroke = StrokeEnabled;
p.StrokeWidth = StrokeWidthInMM;
p.strokeR = StrokeColor.R;
p.strokeG = StrokeColor.G;
p.strokeB = StrokeColor.B;
p.strokeA = StrokeColor.A;
CombinedPolygons.Add(p);
}
List <List <Polygon> > P = new List <List <Polygon> >()
{
CombinedPolygons
};
return(P);
}
private void FixAndSetShapes(IShape[] outlines, IShape[] holes)
{
// if any outline doesn't overlap another shape then we don't have to bother with sending them through clipper
// as sending then though clipper will turn them into generic polygons and loose thier shape specific optimisations
int outlineLength = outlines.Length;
int holesLength = holes?.Length ?? 0;
bool[] overlappingOutlines = new bool[outlineLength];
bool[] overlappingHoles = new bool[holesLength];
bool anyOutlinesOverlapping = false;
bool anyHolesOverlapping = false;
for (int i = 0; i < outlineLength; i++)
{
for (int j = i + 1; j < outlineLength; j++)
{
// skip the bounds check if they are already tested
if (overlappingOutlines[i] == false || overlappingOutlines[j] == false)
{
if (this.OverlappingBoundingBoxes(outlines[i], outlines[j]))
{
overlappingOutlines[i] = true;
overlappingOutlines[j] = true;
anyOutlinesOverlapping = true;
}
}
}
for (int k = 0; k < holesLength; k++)
{
if (overlappingOutlines[i] == false || overlappingHoles[k] == false)
{
if (this.OverlappingBoundingBoxes(outlines[i], holes[k]))
{
overlappingOutlines[i] = true;
overlappingHoles[k] = true;
anyOutlinesOverlapping = true;
anyHolesOverlapping = true;
}
}
}
}
if (anyOutlinesOverlapping)
{
var clipper = new ClipperLib.Clipper();
// add the outlines and the holes to clipper, scaling up from the float source to the int based system clipper uses
this.AddPoints(clipper, outlines, overlappingOutlines, ClipperLib.PolyType.ptSubject);
if (anyHolesOverlapping)
{
this.AddPoints(clipper, holes, overlappingHoles, ClipperLib.PolyType.ptClip);
}
var tree = new ClipperLib.PolyTree();
clipper.Execute(ClipperLib.ClipType.ctDifference, tree);
List <IShape> newShapes = new List <IShape>();
// convert the 'tree' back to shapes
this.ExtractOutlines(tree, newShapes);
// add the origional outlines that where not overlapping
for (int i = 0; i < outlineLength - 1; i++)
{
if (!overlappingOutlines[i])
{
newShapes.Add(outlines[i]);
}
}
this.shapes = newShapes.ToArray();
}
else
{
this.shapes = outlines;
}
var paths = new List <IPath>();
foreach (var o in this.shapes)
{
paths.AddRange(o);
}
this.paths = paths;
}
