static public Slice2D ComplexCutSlice(Polygon2D polygon, ComplexCut complexCut)
{
List <Vector2D> slice = complexCut.GetPointsList().ToVector2DList();
Slice2D result = Slice2D.Create(null, complexCut);
if (slice.Count < 1)
{
return(result);
}
if (Math2D.SliceIntersectItself(slice))
{
if (Slicer2D.Debug.enabled)
{
Debug.LogWarning("Slicer2D: Complex Cut Slicer intersected with itself!");
}
return(result);
}
Vector2D startPoint = null;
foreach (Vector2D id in slice)
{
if (polygon.PointInPoly(id) == false)
{
startPoint = id;
break;
}
}
Polygon2D newPolygon = new Polygon2D(slice);
slice = Vector2DList.GetListStartingPoint(slice, startPoint);
slice.Add(startPoint);
if (polygon.PolyInPoly(newPolygon))
{
polygon.AddHole(newPolygon);
result.AddPolygon(polygon);
return(result);
}
result = ComplexSlicer.Slice(polygon, slice);
return(result);
}
static public Slice2D LinearCutSlice(Polygon2D polygon, LinearCut linearCut)
{
List <Vector2D> slice = linearCut.GetPointsList().ToVector2DList();
Slice2D result = Slice2D.Create(null, linearCut);
if (slice.Count < 1)
{
return(result);
}
Vector2D startPoint = null;
foreach (Vector2D id in slice)
{
if (polygon.PointInPoly(id) == false)
{
startPoint = id;
break;
}
}
Polygon2D newPolygon = new Polygon2D(slice);
slice = Vector2DList.GetListStartingPoint(slice, startPoint);
slice.Add(startPoint);
if (polygon.PolyInPoly(newPolygon))
{
polygon.AddHole(newPolygon);
result.AddPolygon(polygon);
return(result);
}
result = ComplexSlicer.Slice(polygon, slice);
return(result);
}
// Polygon Slice - TODO: Return No Polygon if it's eaten by polygon slice
static public Slice2D PolygonSlice(Polygon2D polygon, Polygon2D slicePolygon)
{
List <Polygon2D> holes = polygon.holesList;
polygon = new Polygon2D(new List <Vector2D>(polygon.pointsList));
polygon.holesList = holes;
slicePolygon = new Polygon2D(new List <Vector2D>(slicePolygon.pointsList));
Slice2D result = Slice2D.Create(null, polygon);
Slicer2D.SliceType tempSliceType = Slicer2D.complexSliceType;
Slicer2D.complexSliceType = Slicer2D.SliceType.SliceHole;
slicePolygon.Normalize();
polygon.Normalize();
// Eat a polygon completely
// Complex Slicer does not register slice in this case
if (slicePolygon.PolyInPoly(polygon) == true)
{
result.AddPolygon(polygon);
return(result);
}
// Cut a hole inside (how does this work if it collides with other hole?)
if (polygon.PolyInPoly(slicePolygon) == true)
{
polygon.AddHole(slicePolygon);
result.AddPolygon(polygon);
Math2D.Distance distance = Math2D.Distance.PolygonToPolygon(polygon, slicePolygon);
if (distance != null && distance.value < precision)
{
return(SlicePolygonFromEdge(polygon, slicePolygon));
}
return(result);
}
// Act as Regular Slice
Vector2D startPoint = null;
foreach (Vector2D id in slicePolygon.pointsList)
{
if (polygon.PointInPoly(id) == false)
{
startPoint = id;
break;
}
}
if (startPoint == null)
{
if (Math2D.PolyIntersectPoly(polygon, slicePolygon))
{
return(SlicePolygonFromEdge(polygon, slicePolygon));
}
if (Slicer2D.Debug.enabled)
{
Debug.LogWarning("Starting Point Error In PolygonSlice");
}
return(result);
}
slicePolygon.pointsList = Vector2DList.GetListStartingPoint(slicePolygon.pointsList, startPoint);
/*
* List<Vector2D> s = new List<Vector2D> ();
* foreach (Pair2D pair in Pair2D.GetList(polygonSlice.pointsList, false)) {
* List<Vector2D> stackList = polygon.GetListSliceIntersectPoly(pair);
* stackList = Vector2DList.GetListSortedToPoint (stackList, pair.A);
* Vector2D old = pair.A;
* s.Add (old);
*
* foreach (Vector2D id in stackList) {
* s.Add (new Vector2D((old.GetX() + id.GetX()) / 2, (old.GetY() + id.GetY()) / 2));
* old = id;
* }
* }
*
* polygonSlice.pointsList = s;
*/
slicePolygon.AddPoint(startPoint);
// Not Necessary
if (polygon.SliceIntersectPoly(slicePolygon.pointsList) == false)
{
return(result);
}
// Slice More Times?
result = ComplexSlicer.Slice(polygon, new List <Vector2D> (slicePolygon.pointsList));
if (result.GetPolygons().Count < 1)
{
if (Slicer2D.Debug.enabled)
{
Debug.LogWarning("Slicer2D: Returns Empty Polygon Slice");
}
}
Slicer2D.complexSliceType = tempSliceType;
return(result);
}
static public Slice2D ComplexSlice(Polygon2D polygon, List <Vector2D> slice)
{
return(ComplexSlicer.Slice(polygon, slice));
}
