private void LinearSlice(Pair2f slice)
{
List <Slice2D> results = Slicer2D.LinearSliceAll(slice, sliceLayer);
if (addForce == true)
{
float sliceRotation = Vector2f.Atan2(slice.B, slice.A);
foreach (Slice2D id in results)
{
foreach (GameObject gameObject in id.gameObjects)
{
Rigidbody2D rigidBody2D = gameObject.GetComponent <Rigidbody2D> ();
if (rigidBody2D)
{
foreach (Vector2f p in id.collisions)
{
Vector2 force = new Vector2(Mathf.Cos(sliceRotation) * addForceAmount, Mathf.Sin(sliceRotation) * addForceAmount);
rigidBody2D.AddForceAtPosition(force, p.Get());
}
}
}
}
}
cutterCount--;
}
private static void DrawLine_Smooth_Matrix(Pair2f pair, float z = 0f)
{
float size = lineWidth;
float pi2 = Mathf.PI / 2;
float rot = Vector2f.Atan2(pair.A, pair.B);
Vector2f A1 = new Vector2f(pair.A);
Vector2f A2 = new Vector2f(pair.A);
Vector2f B1 = new Vector2f(pair.B);
Vector2f B2 = new Vector2f(pair.B);
A1.Push(rot + pi2, size);
A2.Push(rot - pi2, size);
B1.Push(rot + pi2, size);
B2.Push(rot - pi2, size);
GL.TexCoord2(0, 0);
GL.Vertex3(B1.GetX(), B1.GetY(), z);
GL.TexCoord2(1, 0);
GL.Vertex3(A1.GetX(), A1.GetY(), z);
GL.TexCoord2(1, 1);
GL.Vertex3(A2.GetX(), A2.GetY(), z);
GL.TexCoord2(0, 1);
GL.Vertex3(B2.GetX(), B2.GetY(), z);
}
static private Slice2D SliceWithTwoHoles(Polygon polygon, Pair2f slice, Polygon holeA, Polygon holeB)
{
Slice2D result = Slice2D.Create();
if (holeA == holeB)
{
Debug.LogError("Slicer2D: Incorrect Split 2: Cannot Split Into Same Hole");
return(result);
}
Polygon polyA = new Polygon();
Polygon polyB = new Polygon(polygon.pointsList);
polyA.AddPoints(VectorList2f.GetListStartingIntersectLine(holeA.pointsList, slice));
polyA.AddPoints(VectorList2f.GetListStartingIntersectLine(holeB.pointsList, slice));
foreach (Polygon poly in polygon.holesList)
{
if (poly != holeA && poly != holeB)
{
polyB.AddHole(poly);
}
}
polyB.AddHole(polyA);
result.AddPolygon(polyB);
return(result);
}
static public void DrawSlice(List <Vector2f> slice, float z = 0f)
{
foreach (Pair2f p in Pair2f.GetList(slice, false))
{
DrawLine(p.A, p.B, z);
}
}
private static void DrawSlice_Smooth_Matrix(List <Vector2f> list, float z)
{
foreach (Pair2f p in Pair2f.GetList(list))
{
DrawLine_Smooth_Matrix(p, z);
}
}
private void ComplexSlice(List <Vector2f> slice)
{
List <Slice2D> results = Slicer2D.ComplexSliceAll(slice, sliceLayer);
if (addForce == true)
{
foreach (Slice2D id in results)
{
foreach (GameObject gameObject in id.gameObjects)
{
Rigidbody2D rigidBody2D = gameObject.GetComponent <Rigidbody2D> ();
if (rigidBody2D)
{
List <Pair2f> list = Pair2f.GetList(id.collisions);
float forceVal = 1.0f / list.Count;
foreach (Pair2f p in list)
{
float sliceRotation = -Vector2f.Atan2(p.B, p.A);
Vector2 force = new Vector2(Mathf.Cos(sliceRotation) * addForceAmount, Mathf.Sin(sliceRotation) * addForceAmount);
rigidBody2D.AddForceAtPosition(forceVal * force, (p.A.Get() + p.B.Get()) / 2f);
}
}
}
}
}
}
static private Slice2D SliceWithoutHoles(Polygon polygon, Pair2f slice)
{
Slice2D result = Slice2D.Create();
if (polygon.LineIntersectHoles(slice).Count > 0)
{
Debug.LogError("Slicer2D: Slice Intersect Holes (Point Slicer?)"); // When does this happen? - Only when simple slicer is set - point slicer!!!
return(result);
}
Polygon polyA = new Polygon();
Polygon polyB = new Polygon();
Polygon currentPoly = polyA;
int collisionCount = 0;
foreach (Pair2f p in Pair2f.GetList(polygon.pointsList))
{
Vector2f intersection = MathHelper.GetPointLineIntersectLine(p, slice);
if (intersection != null)
{
polyA.AddPoint(intersection);
polyB.AddPoint(intersection);
currentPoly = (currentPoly == polyA) ? polyB : polyA;
collisionCount++;
}
currentPoly.AddPoint(p.B);
}
if (collisionCount == 2) // ' Is it concave split?
{
if (polyA.pointsList.Count() >= 3)
{
result.AddPolygon(polyA);
}
if (polyB.pointsList.Count() >= 3)
{
result.AddPolygon(polyB);
}
foreach (Polygon poly in result.polygons)
{
foreach (Polygon hole in polygon.holesList)
{
if (poly.PolyInPoly(hole) == true)
{
poly.AddHole(hole);
}
}
}
return(result);
}
return(result);
}
static private Slice2D SlicePolygonInside(Polygon polygon, List <Vector2f> slice) // Create Polygon Inside?
{
Slice2D result = Slice2D.Create();
Polygon newPoly = new Polygon();
bool createPoly = false;
foreach (Pair2f pairA in Pair2f.GetList(slice, false))
{
foreach (Pair2f pairB in Pair2f.GetList(slice, false))
{
Vector2f intersection = MathHelper.GetPointLineIntersectLine(pairA, pairB);
if (intersection != null && (pairA.A != pairB.A && pairA.B != pairB.B && pairA.A != pairB.B && pairA.B != pairB.A))
{
createPoly = !createPoly;
newPoly.AddPoint(intersection);
}
}
if (createPoly == true)
{
newPoly.AddPoint(pairA.B);
}
}
bool inHoles = false;
foreach (Polygon hole in polygon.holesList)
{
if (hole.PolyInPoly(newPoly) == true)
{
inHoles = true;
}
}
if (inHoles == false && newPoly.pointsList.Count > 2 && polygon.PolyInPoly(newPoly) == true)
{
polygon.AddHole(newPoly);
List <Polygon> polys = new List <Polygon> (polygon.holesList);
foreach (Polygon hole in polys)
{
if (newPoly.PolyInPoly(hole) == true)
{
polygon.holesList.Remove(hole);
newPoly.AddHole(hole);
}
}
result.AddPolygon(polygon);
if (Slicer2D.complexSliceType == Slicer2D.SliceType.FillSlicedHole)
{
result.AddPolygon(newPoly);
}
return(result);
}
return(result);
}
private static void DrawSlice_Matrix(List <Vector2f> list, float z)
{
foreach (Pair2f p in Pair2f.GetList(list))
{
GL.Vertex3(p.A.GetX(), p.A.GetY(), z);
GL.Vertex3(p.B.GetX(), p.B.GetY(), z);
}
}
public static bool LineIntersectLine(Pair2f lineS, Pair2f lineE)
{
if (GetPointLineIntersectLine(lineS, lineE) != null)
{
return(true);
}
return(false);
}
static public void DrawSmoothLine(Pair2f pair, float z = 0f)
{
GL.PushMatrix();
lineMaterial.SetPass(0);
GL.Begin(GL.QUADS);
DrawLine_Smooth_Matrix(pair, z);
GL.End();
GL.PopMatrix();
}
public bool IsClockwise()
{
double sum = 0;
foreach (Pair2f id in Pair2f.GetList(pointsList))
{
sum += (id.B.GetX() - id.A.GetX()) * (id.B.GetY() + id.A.GetY());
}
return(sum > 0);
}
public static bool LineIntersectPoly(Pair2f line, List <Vector2f> poly)
{
foreach (Pair2f b in Pair2f.GetList(poly))
{
if (LineIntersectLine(line, b))
{
return(true);
}
}
return(false);
}
public static List <Vector2f> GetListLineIntersectSlice(Pair2f pair, List <Vector2f> slice)
{
List <Vector2f> resultList = new List <Vector2f> ();
foreach (Pair2f id in Pair2f.GetList(slice, false))
{
Vector2f result = GetPointLineIntersectLine(id, pair);
if (result != null)
{
resultList.Add(result);
}
}
return(resultList);
}
public static List <Vector2f> GetListPolyIntersectSlice(List <Vector2f> pointsList, Pair2f slice)
{
List <Vector2f> resultList = new List <Vector2f> ();
foreach (Pair2f id in Pair2f.GetList(pointsList))
{
Vector2f result = GetPointLineIntersectLine(id, slice);
if (result != null)
{
resultList.Add(result);
}
}
return(resultList);
}
public Slice2D LinearSlice(Pair2f slice)
{
Polygon colliderPolygon = GetPolygonToSlice();
if (colliderPolygon != null)
{
Slice2D sliceResult = Slicer2D.LinearSlice(colliderPolygon, slice);
sliceResult.AddGameObjects(PerformResult(sliceResult.polygons));
return(sliceResult);
}
return(Slice2D.Create());
}
// Getting List is Slower
public static List <Vector2f> GetListLineIntersectPoly(Pair2f line, List <Vector2f> poly)
{
List <Vector2f> result = new List <Vector2f>();
foreach (Pair2f b in Pair2f.GetList(poly))
{
Vector2f intersection = GetPointLineIntersectLine(line, b);
if (intersection != null)
{
result.Add(intersection);
}
}
return(result);
}
public List <Vector2f> GetListSliceIntersectPoly(Pair2f slice)
{
List <Vector2f> intersections = MathHelper.GetListPolyIntersectSlice(pointsList, slice);
foreach (Polygon poly in holesList)
{
foreach (Vector2f p in MathHelper.GetListPolyIntersectSlice(poly.pointsList, slice))
{
intersections.Add(p);
}
}
return(intersections);
}
public List <Polygon> LineIntersectHoles(Pair2f pair)
{
List <Polygon> resultList = new List <Polygon> ();
foreach (Polygon poly in holesList)
{
if (MathHelper.LineIntersectPoly(pair, poly.pointsList) == true)
{
resultList.Add(poly);
}
}
return(resultList);
}
public static bool SliceIntersectPoly(List <Vector2f> slice, List <Vector2f> polyB)
{
foreach (Pair2f a in Pair2f.GetList(slice, false))
{
foreach (Pair2f b in Pair2f.GetList(polyB))
{
if (LineIntersectLine(a, b))
{
return(true);
}
}
}
return(false);
}
public float GetArea()
{
float area = 0f;
foreach (Pair2f id in Pair2f.GetList(pointsList))
{
area += ((id.B.GetX() - id.A.GetX()) * (id.B.GetY() + id.A.GetY())) / 2.0f;
}
foreach (Polygon p in holesList)
{
area -= p.GetArea();
}
return(Mathf.Abs(area));
}
public static bool PolyInPoly(List <Vector2f> polyIn, List <Vector2f> poly)
{
foreach (Pair2f p in Pair2f.GetList(poly))
{
if (PointInPoly(p.A, polyIn) == false)
{
return(false);
}
}
if (PolyIntersectPoly(polyIn, poly) == true)
{
return(false);
}
return(true);
}
public static bool SliceIntersectItself(List <Vector2f> slice)
{
foreach (Pair2f pairA in Pair2f.GetList(slice, true))
{
foreach (Pair2f pairB in Pair2f.GetList(slice, true))
{
if (MathHelper.GetPointLineIntersectLine(pairA, pairB) != null)
{
if (pairA.A != pairB.A && pairA.B != pairB.B && pairA.A != pairB.B && pairA.B != pairB.A)
{
return(true);
}
}
}
}
return(false);
}
static public void DrawPolygon(Polygon poly, float z = 0f)
{
Check();
if (smooth)
{
GL.PushMatrix();
lineMaterial.SetPass(0);
GL.Begin(GL.QUADS);
DrawSlice_Smooth_Matrix(poly.pointsList, z);
GL.End();
GL.PopMatrix();
GL.PushMatrix();
lineEndMaterial.SetPass(0);
GL.Begin(GL.QUADS);
foreach (Pair2f p in Pair2f.GetList(poly.pointsList))
{
DrawLineEnd_Smooth_Matrix(p, z);
}
GL.End();
GL.PopMatrix();
}
else
{
GL.PushMatrix();
defaultMaterial.SetPass(0);
GL.Begin(GL.LINES);
GL.Color(setColor);
DrawSlice_Matrix(poly.pointsList, z);
GL.End();
GL.PopMatrix();
}
foreach (Polygon p in poly.holesList)
{
DrawPolygon(p, z);
}
}
static public List <Slice2D> LinearSliceAll(Pair2f slice, Slice2DLayer layer)
{
List <Slice2D> result = new List <Slice2D> ();
foreach (Slicer2D id in GetList())
{
if (id.MatchLayers(layer))
{
Slice2D sliceResult = id.LinearSlice(slice);
if (sliceResult.gameObjects.Count > 0)
{
result.Add(sliceResult);
}
}
}
return(result);
}
public static bool PointInPoly(Vector2f point, List <Vector2f> xy)
{
if (xy.Count < 3)
{
return(false);
}
int total = 0;
int diff = 0;
foreach (Pair2f id in Pair2f.GetList(xy))
{
diff = (GetQuad(point, id.A) - GetQuad(point, id.B));
switch (diff)
{
case -2:
case 2:
if ((id.B.GetX() - (((id.B.GetY() - point.GetY()) * (id.A.GetX() - id.B.GetX())) / (id.A.GetY() - id.B.GetY()))) < point.GetX())
{
diff = -diff;
}
break;
case 3:
diff = -1;
break;
case -3:
diff = 1;
break;
default:
break;
}
total += diff;
}
return(Mathf.Abs(total) == 4);
}
static private Slice2D SingleSlice(Polygon polygon, Pair2f slice)
{
Slice2D result = Slice2D.Create();
if ((polygon.PointInPoly(slice.A) == true || polygon.PointInPoly(slice.B) == true)) // && pointsInHoles == 1
{
Debug.LogError("Slicer2D: Incorrect Split 1: When it Happens");
// Slicing through hole cut-out
return(result);
}
Polygon holeA = polygon.PointInHole(slice.A);
Polygon holeB = polygon.PointInHole(slice.B);
int pointsInHoles = Convert.ToInt32(holeA != null) + Convert.ToInt32(holeB != null);
if (pointsInHoles == 2 && holeA == holeB)
{
pointsInHoles = 1;
}
switch (pointsInHoles)
{
case 0:
return(SliceWithoutHoles(polygon, slice));
case 1:
return(SliceWithOneHole(polygon, slice, holeA, holeB));
case 2:
return(SliceWithTwoHoles(polygon, slice, holeA, holeB));
default:
break;
}
return(result);
}
private void ComplexSlice(List <Vector2f> slice)
{
List <Slice2D> results = Slicer2D.ComplexSliceAll(slice, null);
if (addForce == true)
{
foreach (Slice2D id in results)
{
foreach (GameObject gameObject in id.gameObjects)
{
Rigidbody2D rigidBody2D = gameObject.GetComponent <Rigidbody2D> ();
if (rigidBody2D)
{
foreach (Pair2f p in Pair2f.GetList(id.collisions))
{
float sliceRotation = Vector2f.Atan2(p.B, p.A);
rigidBody2D.AddForceAtPosition(new Vector2(Mathf.Cos(sliceRotation) * addForceAmount, Mathf.Sin(sliceRotation) * addForceAmount), (p.A.Get() + p.B.Get()) / 2f);
}
}
}
}
}
}
// Might Break (Only for 2 collisions)
/// <summary>
/// Return a list which starts with first interesction with given slice
/// </summary>
public static List <Vector2f> GetListStartingIntersectSlice(List <Vector2f> pointsList, List <Vector2f> slice)
{
List <Vector2f> result = new List <Vector2f> ();
bool start = false;
foreach (Pair2f p in Pair2f.GetList(pointsList))
{
List <Vector2f> r = MathHelper.GetListLineIntersectSlice(p, slice);
if (start == true)
{
result.Add(p.A);
}
if (r.Count > 0)
{
result.Add(r.First());
start = true;
}
}
foreach (Pair2f p in Pair2f.GetList(pointsList))
{
List <Vector2f> r = MathHelper.GetListLineIntersectSlice(p, slice);
if (start == true)
{
result.Add(p.A);
}
if (r.Count > 0)
{
result.Add(r.First());
start = false;
}
}
return(result);
}
/// <summary>
/// Return a list which starts with first interesction with given line
/// </summary>
public static List <Vector2f> GetListStartingIntersectLine(List <Vector2f> pointsList, Pair2f line)
{
List <Vector2f> result = new List <Vector2f> ();
bool start = false;
foreach (Pair2f p in Pair2f.GetList(pointsList))
{
Vector2f r = MathHelper.GetPointLineIntersectLine(p, line);
if (start == true)
{
result.Add(p.A);
}
if (r != null)
{
result.Add(r);
start = true;
}
}
foreach (Pair2f p in Pair2f.GetList(pointsList))
{
Vector2f r = MathHelper.GetPointLineIntersectLine(p, line);
if (start == true)
{
result.Add(p.A);
}
if (r != null)
{
result.Add(r);
start = false;
}
}
return(result);
}