private PolyTreeEdgesRetained PrepairPolyTree(Collider2D[] floorColliders, Collider2D[] wallColliders)
{
if(floorColliders.Length == 0)
{
throw new System.Exception("No colliders in the scene on the floor layer.");
}
PolyTreeEdgesRetained TreeAndEdges = new PolyTreeEdgesRetained();
TreeAndEdges.Edges = new List<List<IntPoint>>();
TreeAndEdges.Tree = new PolyTree();
Clipper finalClipper = new Clipper();
if (floorColliders.Length > 0)
{
Clipper tempC = new Clipper();
ClipperOffset tempCo = new ClipperOffset();
foreach (Collider2D d in floorColliders)
{
List<IntPoint> p = PolygonFromCollider2D(d, false);
if (p != null && p.Count != 0)
{
if (ClipperLib.Clipper.Orientation(p))
p.Reverse();
tempC.AddPath(p, PolyType.ptSubject, true);
}
}
List<List<IntPoint>> solution = new List<List<IntPoint>>();
tempC.Execute(ClipType.ctUnion, solution, PolyFillType.pftNonZero, PolyFillType.pftNonZero);
tempC.Clear();
foreach (List<IntPoint> intPoints in solution)
{
tempCo.AddPath(intPoints, (JoinType)GenerationInformation.JoinType, EndType.etClosedPolygon);
TreeAndEdges.Edges.Add(intPoints);
}
solution.Clear();
tempCo.Execute(ref solution, -GenerationInformation.ColliderPadding * GenerationInformation.CalculationScaleFactor);
finalClipper.AddPaths(solution, PolyType.ptSubject, true);
}
if(wallColliders.Length > 0)
{
Clipper tempC = new Clipper();
ClipperOffset tempCo = new ClipperOffset();
foreach (Collider2D d in wallColliders)
{
List<IntPoint> p = PolygonFromCollider2D(d, false);
if (p != null && p.Count != 0)
{
if (ClipperLib.Clipper.Orientation(p))
p.Reverse();
tempC.AddPath(p, PolyType.ptSubject, true);
}
}
List<List<IntPoint>> solution = new List<List<IntPoint>>();
tempC.Execute(ClipType.ctUnion, solution, PolyFillType.pftNonZero, PolyFillType.pftNonZero);
tempC.Clear();
foreach (List<IntPoint> intPoints in solution)
{
tempCo.AddPath(intPoints, (JoinType)GenerationInformation.JoinType, EndType.etClosedPolygon);
TreeAndEdges.Edges.Add(intPoints);
}
solution.Clear();
tempCo.Execute(ref solution, GenerationInformation.ColliderPadding * GenerationInformation.CalculationScaleFactor);
finalClipper.AddPaths(solution, PolyType.ptClip, true);
}
finalClipper.Execute(ClipType.ctDifference, TreeAndEdges.Tree, PolyFillType.pftPositive, PolyFillType.pftEvenOdd);
return TreeAndEdges;
}
private NavMesh2DBehaviour.MeshContour[] ExtractMeshContour(PolyTreeEdgesRetained ptcr)
{
List<NavMesh2DBehaviour.MeshContour> result = new List<NavMesh2DBehaviour.MeshContour>();
foreach (PolyNode meshContour in ptcr.Tree.Childs)
{
List<Vector2> extractedPoints = new List<Vector2>();
foreach (var point in meshContour.Contour)
{
extractedPoints.Add(new Vector2(point.X / GenerationInformation.CalculationScaleFactor, point.Y / GenerationInformation.CalculationScaleFactor));
}
result.Add(new NavMesh2DBehaviour.MeshContour { Points = extractedPoints.ToArray() });
foreach (PolyNode holes in meshContour.Childs)
{
extractedPoints.Clear();
foreach (var point in holes.Contour)
{
extractedPoints.Add(new Vector2(point.X / GenerationInformation.CalculationScaleFactor, point.Y / GenerationInformation.CalculationScaleFactor));
}
result.Add(new NavMesh2DBehaviour.MeshContour { Points = extractedPoints.ToArray() });
}
}
return result.ToArray();
}
