public void StartExplosionFromQueue(ExploderParams p)
{
ExploderUtils.Assert(currTaskType == TaskType.None, "Wrong task: " + currTaskType);
this.parameters = p;
processingFrames = 1;
explosionWatch.Reset();
explosionWatch.Start();
//
// do preprocess right away
//
currTaskType = TaskType.Preprocess;
InitTask(currTaskType);
RunTask(currTaskType);
if (parameters.ThreadOptions != ExploderObject.ThreadOptions.Disabled)
{
currTaskType = NextTask(currTaskType);
if (currTaskType != TaskType.None)
{
InitTask(currTaskType);
RunTask(currTaskType, parameters.FrameBudget);
}
else
{
explosionWatch.Stop();
queue.OnExplosionFinished(parameters.id, explosionWatch.ElapsedMilliseconds);
}
}
}
public void OnExplosionFinished(int id)
{
var explosion = queue.Dequeue();
ExploderUtils.Assert(explosion.id == id, "Explosion id mismatch!");
ProcessQueue();
}
private TaskType NextTask(TaskType taskType)
{
switch (taskType)
{
case TaskType.Preprocess:
{
if (meshSet.Count == 0)
{
return(TaskType.None);
}
if (parameters.PartialExplosion)
{
return(TaskType.PartialSeparator);
}
return(TaskType.ProcessCutter);
}
case TaskType.PartialSeparator:
return(TaskType.ProcessCutter);
case TaskType.ProcessCutter:
{
if (splitMeshIslands)
{
return(TaskType.IsolateMeshIslands);
}
if (parameters.Crack)
{
return(TaskType.PostprocessCrack);
}
return(TaskType.PostprocessExplode);
}
case TaskType.IsolateMeshIslands:
{
if (parameters.Crack)
{
return(TaskType.PostprocessCrack);
}
return(TaskType.PostprocessExplode);
}
case TaskType.PostprocessExplode:
return(TaskType.None);
case TaskType.PostprocessCrack:
return(TaskType.None);
default:
ExploderUtils.Assert(false, "Invalid task type!");
break;
}
ExploderUtils.Assert(false, "Invalid task type!");
return(TaskType.None);
}
/// <summary>
/// c-tor
/// </summary>
/// <param name="pnts">points of the polygon</param>
public Polygon(Vector2[] pnts)
{
ExploderUtils.Assert(pnts.Length >= 3, "Invalid polygon!");
Points = pnts;
Area = GetArea();
holes = new List <Polygon>();
}
/// <summary>
/// create pool (array) of fragment game objects with all necessary components
/// </summary>
/// <param name="poolSize">number of fragments</param>
/// <param name="useMeshColliders">use mesh colliders</param>
/// <param name="use2dCollision">enable Unity 2D collision system</param>
public void Allocate(int poolSize, bool useMeshColliders, bool use2dCollision, bool useGravity)
{
ExploderUtils.Assert(poolSize > 0, "");
if (pool == null || pool.Length < poolSize || useMeshColliders != this.meshColliders)
{
DestroyFragments();
pool = new Fragment[poolSize];
this.meshColliders = useMeshColliders;
for (int i = 0; i < poolSize; i++)
{
var fragment = new GameObject("fragment_" + i);
fragment.AddComponent <MeshFilter>();
fragment.AddComponent <MeshRenderer>();
if (use2dCollision)
{
#if PHYSICS_2D
fragment.AddComponent <PolygonCollider2D>();
fragment.AddComponent <Rigidbody2D>();
#endif
}
else
{
if (useMeshColliders)
{
var meshCollider = fragment.AddComponent <MeshCollider>();
meshCollider.convex = true;
}
else
{
fragment.AddComponent <BoxCollider>();
}
Rigidbody rb = fragment.AddComponent <Rigidbody>();
rb.useGravity = useGravity;
}
fragment.AddComponent <ExploderOption>();
var fragmentComponent = fragment.AddComponent <Fragment>();
fragment.transform.parent = gameObject.transform;
pool[i] = fragmentComponent;
ExploderUtils.SetActiveRecursively(fragment.gameObject, false);
fragmentComponent.RefreshComponentsCache();
fragmentComponent.Sleep();
}
}
}
public void OnExplosionFinished(int id, long ellapsedMS)
{
var explosion = queue.Dequeue();
ExploderUtils.Assert(explosion.id == id, "Explosion id mismatch!");
if (explosion.Callback != null)
{
explosion.Callback(ellapsedMS, explosion.Crack ? ExploderObject.ExplosionState.ObjectCracked : ExploderObject.ExplosionState.ExplosionFinished);
}
ProcessQueue();
}
void Triangulate(List <Dictionary <int, int> > contours, Plane plane, List <Vector3>[] vertices, List <Vector3>[] normals, List <Vector2>[] uvs,
List <Vector4>[] tangents, List <Color32>[] colors, List <int>[] triangles, bool uvCutMesh, bool useTangents, bool useColors, bool useNormals)
{
if (contours.Count == 0 || contours[0].Count < 3)
{
// Utils.Log("Contour empty!: ");
return;
}
// prepare plane matrix
var m = plane.GetPlaneMatrix();
var mInv = m.inverse;
var zShit = 0.0f;
var polygons = new List <Polygon>(contours.Count);
// construct polygons from contours
Polygon highAreaPoly = null;
foreach (var ctr in contours)
{
var polygonPoints = new Vector2[ctr.Count];
var j = 0;
foreach (var i in ctr.Values)
{
var p = mInv * vertices[0][i];
polygonPoints[j++] = p;
// save z-coordinate
zShit = p.z;
}
var polygon = new Polygon(polygonPoints);
polygons.Add(polygon);
if (highAreaPoly == null || Mathf.Abs(highAreaPoly.Area) < Mathf.Abs(polygon.Area))
{
highAreaPoly = polygon;
}
}
ExploderUtils.Assert(polygons.Count > 0, "Zero polygons!");
// test for holes
if (polygons.Count > 0)
{
var polyToRemove = new List <Polygon>();
foreach (var polygon in polygons)
{
if (polygon != highAreaPoly)
{
if (highAreaPoly.IsPointInside(polygon.Points[0]))
{
highAreaPoly.AddHole(polygon);
polyToRemove.Add(polygon);
}
}
}
foreach (var polygon in polyToRemove)
{
polygons.Remove(polygon);
}
}
var vertCounter0 = vertices[0].Count;
var vertCounter1 = vertices[1].Count;
foreach (var polygon in polygons)
{
if (!polygon.Triangulate(polygonIndicesArray))
{
continue;
}
// ExploderUtils.Assert(indices.Count == polygonIndicesArray.Count, "Count mismatch!");
//
// for (int i = 0; i < indices.Count; i++)
// {
// ExploderUtils.Assert(polygonIndicesArray[i] == indices[i], "Indices not match: " + polygons.Count);
//
// if (indices[i] != polygonIndicesArray[i])
// {
// ExploderUtils.Assert(false, "");
// }
// }
// get polygon bounding square size
var min = Mathf.Min(polygon.Min.x, polygon.Min.y);
var max = Mathf.Max(polygon.Max.x, polygon.Max.y);
var polygonSize = max - min;
// Utils.Log("PolygonSize: " + polygonSize + " " + polygon.Min + " " + polygon.Max);
// Utils.Log("Triangulate polygons: " + polygon.Points.Length);
foreach (var polyPoint in polygon.Points)
{
var p = m * new Vector3(polyPoint.x, polyPoint.y, zShit);
vertices[0].Add(p);
vertices[1].Add(p);
if (useNormals)
{
normals[0].Add(-plane.Normal);
normals[1].Add(plane.Normal);
}
if (uvCutMesh)
{
var uv0 = new Vector2((polyPoint.x - min) / polygonSize,
(polyPoint.y - min) / polygonSize);
var uv1 = new Vector2((polyPoint.x - min) / polygonSize,
(polyPoint.y - min) / polygonSize);
// normalize uv to fit cross-section uv area
var areaSizeX = crossSectionUV.z - crossSectionUV.x;
var areaSizeY = crossSectionUV.w - crossSectionUV.y;
uv0.x = crossSectionUV.x + uv0.x * areaSizeX;
uv0.y = crossSectionUV.y + uv0.y * areaSizeY;
uv1.x = crossSectionUV.x + uv1.x * areaSizeX;
uv1.y = crossSectionUV.y + uv1.y * areaSizeY;
uvs[0].Add(uv0);
uvs[1].Add(uv1);
}
else
{
uvs[0].Add(Vector2.zero);
uvs[1].Add(Vector2.zero);
}
if (useTangents)
{
// fast and dirty way to create tangents
var v0 = plane.Normal;
MeshUtils.Swap(ref v0.x, ref v0.y);
MeshUtils.Swap(ref v0.y, ref v0.z);
Vector4 tangent = Vector3.Cross(plane.Normal, v0);
tangent.w = 1.0f;
tangents[0].Add(tangent);
tangent.w = -1.0f;
tangents[1].Add(tangent);
}
if (useColors)
{
colors[0].Add(crossSectionVertexColour);
colors[1].Add(crossSectionVertexColour);
}
}
var indicesCount = polygonIndicesArray.Count;
var j = indicesCount - 1;
for (int i = 0; i < indicesCount; i++)
{
triangles[0].Add(vertCounter0 + polygonIndicesArray[i]);
triangles[1].Add(vertCounter1 + polygonIndicesArray[j]);
j--;
}
vertCounter0 += polygon.Points.Length;
vertCounter1 += polygon.Points.Length;
}
}
float Cut(ExploderMesh mesh, ExploderTransform meshTransform, Plane plane, bool triangulateHoles, bool allowOpenMesh, ref List <ExploderMesh> meshes)
{
var stopWatch = new Stopwatch();
stopWatch.Start();
#if PROFILING
MeasureIt.Begin("CutAllocations");
#endif
// cache mesh data
var trianglesNum = mesh.triangles.Length;
var verticesNum = mesh.vertices.Length;
var meshTriangles = mesh.triangles;
var meshTangents = mesh.tangents;
var meshColors = mesh.colors32;
var meshVertices = mesh.vertices;
var meshNormals = mesh.normals;
var meshUV = mesh.uv;
var useMeshTangents = meshTangents != null && meshTangents.Length > 0;
var useVertexColors = meshColors != null && meshColors.Length > 0;
var useNormals = meshNormals != null && meshNormals.Length > 0;
// preallocate buffers
AllocateBuffers(trianglesNum, verticesNum, useMeshTangents, useVertexColors);
ExploderMesh mesh0, mesh1;
#if PROFILING
MeasureIt.End("CutAllocations");
MeasureIt.Begin("CutCycleFirstPass");
#endif
// first pass - find complete triangles on both sides of the plane
for (int i = 0; i < trianglesNum; i += 3)
{
// get triangle points
var v0 = meshVertices[meshTriangles[i]];
var v1 = meshVertices[meshTriangles[i + 1]];
var v2 = meshVertices[meshTriangles[i + 2]];
var side0 = plane.GetSideFix(ref v0);
var side1 = plane.GetSideFix(ref v1);
var side2 = plane.GetSideFix(ref v2);
meshVertices[meshTriangles[i]] = v0;
meshVertices[meshTriangles[i + 1]] = v1;
meshVertices[meshTriangles[i + 2]] = v2;
// Utils.Log(plane.Pnt + " " + v0 + " " + v1 + " " + " " + v2);
// all points on one side
if (side0 == side1 && side1 == side2)
{
var idx = side0 ? 0 : 1;
if (meshTriangles[i] >= triCache.Length)
{
ExploderUtils.Log("TriCacheError " + meshTriangles[i] + " " + triCache.Length + " " + meshVertices.Length);
}
if (triCache[meshTriangles[i]] == 0)
{
triangles[idx].Add(triCounter[idx]);
vertices[idx].Add(meshVertices[meshTriangles[i]]);
uvs[idx].Add(meshUV[meshTriangles[i]]);
if (useNormals)
{
normals[idx].Add(meshNormals[meshTriangles[i]]);
}
if (useMeshTangents)
{
tangents[idx].Add(meshTangents[meshTriangles[i]]);
}
if (useVertexColors)
{
vertexColors[idx].Add(meshColors[meshTriangles[i]]);
}
centroid[idx] += meshVertices[meshTriangles[i]];
triCache[meshTriangles[i]] = triCounter[idx] + 1;
triCounter[idx]++;
}
else
{
triangles[idx].Add(triCache[meshTriangles[i]] - 1);
}
if (triCache[meshTriangles[i + 1]] == 0)
{
triangles[idx].Add(triCounter[idx]);
vertices[idx].Add(meshVertices[meshTriangles[i + 1]]);
uvs[idx].Add(meshUV[meshTriangles[i + 1]]);
if (useNormals)
{
normals[idx].Add(meshNormals[meshTriangles[i + 1]]);
}
if (useMeshTangents)
{
tangents[idx].Add(meshTangents[meshTriangles[i + 1]]);
}
if (useVertexColors)
{
vertexColors[idx].Add(meshColors[meshTriangles[i + 1]]);
}
centroid[idx] += meshVertices[meshTriangles[i + 1]];
triCache[meshTriangles[i + 1]] = triCounter[idx] + 1;
triCounter[idx]++;
}
else
{
triangles[idx].Add(triCache[meshTriangles[i + 1]] - 1);
}
if (triCache[meshTriangles[i + 2]] == 0)
{
triangles[idx].Add(triCounter[idx]);
vertices[idx].Add(meshVertices[meshTriangles[i + 2]]);
uvs[idx].Add(meshUV[meshTriangles[i + 2]]);
if (useNormals)
{
normals[idx].Add(meshNormals[meshTriangles[i + 2]]);
}
if (useMeshTangents)
{
tangents[idx].Add(meshTangents[meshTriangles[i + 2]]);
}
if (useVertexColors)
{
vertexColors[idx].Add(meshColors[meshTriangles[i + 2]]);
}
centroid[idx] += meshVertices[meshTriangles[i + 2]];
triCache[meshTriangles[i + 2]] = triCounter[idx] + 1;
triCounter[idx]++;
}
else
{
triangles[idx].Add(triCache[meshTriangles[i + 2]] - 1);
}
}
else
{
// intersection triangles add to list and process it in second pass
cutTris.Add(i);
}
}
if (vertices[0].Count == 0)
{
centroid[0] = meshVertices[0];
}
else
{
centroid[0] /= vertices[0].Count;
}
if (vertices[1].Count == 0)
{
centroid[1] = meshVertices[1];
}
else
{
centroid[1] /= vertices[1].Count;
}
// UnityEngine.Debug.LogFormat("cut: {0} -- {1}, normal: {2}, tris: {3}", vertices[0].Count, vertices[1].Count, plane.Normal, cutTris.Count);
#if PROFILING
MeasureIt.End("CutCycleFirstPass");
MeasureIt.Begin("CutCycleSecondPass");
#endif
if (cutTris.Count < 1)
{
stopWatch.Stop();
return(stopWatch.ElapsedMilliseconds);
}
AllocateContours(cutTris.Count);
// second pass - cut intersecting triangles in half
foreach (var cutTri in cutTris)
{
var triangle = new Triangle
{
ids = new[] { meshTriangles[cutTri + 0], meshTriangles[cutTri + 1], meshTriangles[cutTri + 2] },
pos = new[] { meshVertices[meshTriangles[cutTri + 0]], meshVertices[meshTriangles[cutTri + 1]], meshVertices[meshTriangles[cutTri + 2]] },
normal = useNormals ? new[] { meshNormals[meshTriangles[cutTri + 0]], meshNormals[meshTriangles[cutTri + 1]], meshNormals[meshTriangles[cutTri + 2]] } : new[] { Vector3.zero, Vector3.zero, Vector3.zero },
uvs = new[] { meshUV[meshTriangles[cutTri + 0]], meshUV[meshTriangles[cutTri + 1]], meshUV[meshTriangles[cutTri + 2]] },
tangents = useMeshTangents ? new[] { meshTangents[meshTriangles[cutTri + 0]], meshTangents[meshTriangles[cutTri + 1]], meshTangents[meshTriangles[cutTri + 2]] } : new [] { Vector4.zero, Vector4.zero, Vector4.zero },
colors = useVertexColors ? new[] { meshColors[meshTriangles[cutTri + 0]], meshColors[meshTriangles[cutTri + 1]], meshColors[meshTriangles[cutTri + 2]] } : new Color32[] { Color.white, Color.white, Color.white },
};
// check points with a plane
var side0 = plane.GetSide(triangle.pos[0]);
var side1 = plane.GetSide(triangle.pos[1]);
var side2 = plane.GetSide(triangle.pos[2]);
float t0, t1;
Vector3 s0 = Vector3.zero, s1 = Vector3.zero;
var idxLeft = side0 ? 0 : 1;
var idxRight = 1 - idxLeft;
if (side0 == side1)
{
var a = plane.IntersectSegment(triangle.pos[2], triangle.pos[0], out t0, ref s0);
var b = plane.IntersectSegment(triangle.pos[2], triangle.pos[1], out t1, ref s1);
ExploderUtils.Assert(a && b, "!!!!!!!!!!!!!!!");
// left side ... 2 triangles
var s0Left = AddIntersectionPoint(s0, triangle, triangle.ids[2], triangle.ids[0], cutVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var s1Left = AddIntersectionPoint(s1, triangle, triangle.ids[2], triangle.ids[1], cutVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var v0Left = AddTrianglePoint(triangle.pos[0], triangle.normal[0], triangle.uvs[0], triangle.tangents[0], triangle.colors[0], triangle.ids[0], triCache, cornerVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var v1Left = AddTrianglePoint(triangle.pos[1], triangle.normal[1], triangle.uvs[1], triangle.tangents[1], triangle.colors[1], triangle.ids[1], triCache, cornerVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
// Triangle (s0, v0, s1)
triangles[idxLeft].Add(s0Left);
triangles[idxLeft].Add(v0Left);
triangles[idxLeft].Add(s1Left);
// Triangle (s1, v0, v1)
triangles[idxLeft].Add(s1Left);
triangles[idxLeft].Add(v0Left);
triangles[idxLeft].Add(v1Left);
// right side ... 1 triangle
var s0Right = AddIntersectionPoint(s0, triangle, triangle.ids[2], triangle.ids[0], cutVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var s1Right = AddIntersectionPoint(s1, triangle, triangle.ids[2], triangle.ids[1], cutVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var v2Right = AddTrianglePoint(triangle.pos[2], triangle.normal[2], triangle.uvs[2], triangle.tangents[2], triangle.colors[2], triangle.ids[2], triCache, cornerVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
// Triangle (v2, s0, s1)
triangles[idxRight].Add(v2Right);
triangles[idxRight].Add(s0Right);
triangles[idxRight].Add(s1Right);
// buffer intersection vertices for triangulation
if (triangulateHoles)
{
if (idxLeft == 0)
{
contour.AddTriangle(cutTri, s0Left, s1Left, s0, s1);
}
else
{
contour.AddTriangle(cutTri, s0Right, s1Right, s0, s1);
}
}
}
else if (side0 == side2)
{
var a = plane.IntersectSegment(triangle.pos[1], triangle.pos[0], out t0, ref s1);
var b = plane.IntersectSegment(triangle.pos[1], triangle.pos[2], out t1, ref s0);
ExploderUtils.Assert(a && b, "!!!!!!!!!!!!!");
// left side ... 2 triangles
var s0Left = AddIntersectionPoint(s0, triangle, triangle.ids[1], triangle.ids[2], cutVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var s1Left = AddIntersectionPoint(s1, triangle, triangle.ids[1], triangle.ids[0], cutVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var v0Left = AddTrianglePoint(triangle.pos[0], triangle.normal[0], triangle.uvs[0], triangle.tangents[0], triangle.colors[0], triangle.ids[0], triCache, cornerVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var v2Left = AddTrianglePoint(triangle.pos[2], triangle.normal[2], triangle.uvs[2], triangle.tangents[2], triangle.colors[2], triangle.ids[2], triCache, cornerVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
// Triangle (v2, s1, s0)
triangles[idxLeft].Add(v2Left);
triangles[idxLeft].Add(s1Left);
triangles[idxLeft].Add(s0Left);
// Triangle (v2, v0, s1)
triangles[idxLeft].Add(v2Left);
triangles[idxLeft].Add(v0Left);
triangles[idxLeft].Add(s1Left);
// right side ... 1 triangle
var s0Right = AddIntersectionPoint(s0, triangle, triangle.ids[1], triangle.ids[2], cutVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var s1Right = AddIntersectionPoint(s1, triangle, triangle.ids[1], triangle.ids[0], cutVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var v1Right = AddTrianglePoint(triangle.pos[1], triangle.normal[1], triangle.uvs[1], triangle.tangents[1], triangle.colors[1], triangle.ids[1], triCache, cornerVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
// Triangle (s0, s1, v1)
triangles[idxRight].Add(s0Right);
triangles[idxRight].Add(s1Right);
triangles[idxRight].Add(v1Right);
// buffer intersection vertices for triangulation
if (triangulateHoles)
{
if (idxLeft == 0)
{
contour.AddTriangle(cutTri, s0Left, s1Left, s0, s1);
}
else
{
contour.AddTriangle(cutTri, s0Right, s1Right, s0, s1);
}
}
}
else
{
var a = plane.IntersectSegment(triangle.pos[0], triangle.pos[1], out t0, ref s0);
var b = plane.IntersectSegment(triangle.pos[0], triangle.pos[2], out t1, ref s1);
ExploderUtils.Assert(a && b, "!!!!!!!!!!!!!");
// right side ... 2 triangles
var s0Right = AddIntersectionPoint(s0, triangle, triangle.ids[0], triangle.ids[1], cutVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var s1Right = AddIntersectionPoint(s1, triangle, triangle.ids[0], triangle.ids[2], cutVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var v1Right = AddTrianglePoint(triangle.pos[1], triangle.normal[1], triangle.uvs[1], triangle.tangents[1], triangle.colors[1], triangle.ids[1], triCache, cornerVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
var v2Right = AddTrianglePoint(triangle.pos[2], triangle.normal[2], triangle.uvs[2], triangle.tangents[2], triangle.colors[2], triangle.ids[2], triCache, cornerVertCache[idxRight], vertices[idxRight], normals[idxRight], uvs[idxRight], tangents[idxRight], vertexColors[idxRight], useMeshTangents, useVertexColors, useNormals);
// Triangle (v2, s1, v1)
triangles[idxRight].Add(v2Right);
triangles[idxRight].Add(s1Right);
triangles[idxRight].Add(v1Right);
// Triangle (s1, s0, v1)
triangles[idxRight].Add(s1Right);
triangles[idxRight].Add(s0Right);
triangles[idxRight].Add(v1Right);
// left side ... 1 triangle
var s0Left = AddIntersectionPoint(s0, triangle, triangle.ids[0], triangle.ids[1], cutVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var s1Left = AddIntersectionPoint(s1, triangle, triangle.ids[0], triangle.ids[2], cutVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
var v0Left = AddTrianglePoint(triangle.pos[0], triangle.normal[0], triangle.uvs[0], triangle.tangents[0], triangle.colors[0], triangle.ids[0], triCache, cornerVertCache[idxLeft], vertices[idxLeft], normals[idxLeft], uvs[idxLeft], tangents[idxLeft], vertexColors[idxLeft], useMeshTangents, useVertexColors, useNormals);
// Triangle (s1, v0, s0)
triangles[idxLeft].Add(s1Left);
triangles[idxLeft].Add(v0Left);
triangles[idxLeft].Add(s0Left);
// buffer intersection vertices for triangulation
if (triangulateHoles)
{
if (idxLeft == 0)
{
contour.AddTriangle(cutTri, s0Left, s1Left, s0, s1);
}
else
{
contour.AddTriangle(cutTri, s0Right, s1Right, s0, s1);
}
}
}
}
#if PROFILING
MeasureIt.End("CutCycleSecondPass");
#endif
if (triangulateHoles)
{
#if PROFILING
MeasureIt.Begin("FindContours");
#endif
contour.FindContours();
if (contour.contour.Count == 0 || contour.contour[0].Count < 3)
{
// triangulateHoles = false;
if (allowOpenMesh)
{
triangulateHoles = false;
}
else
{
stopWatch.Stop();
return(stopWatch.ElapsedMilliseconds);
}
}
#if PROFILING
MeasureIt.End("FindContours");
#endif
}
List <int>[] trianglesCut = null;
var centroid0 = Vector3.zero;
var centroid1 = Vector3.zero;
var min0 = Vector3.zero;
var max0 = Vector3.zero;
var min1 = Vector3.zero;
var max1 = Vector3.zero;
ExploderMesh.CalculateCentroid(vertices[0], ref centroid0, ref min0, ref max0);
ExploderMesh.CalculateCentroid(vertices[1], ref centroid1, ref min1, ref max1);
if (triangulateHoles)
{
#if PROFILING
MeasureIt.Begin("Triangulate");
#endif
trianglesCut = new List <int>[2]
{
new List <int>(contour.MidPointsCount),
new List <int>(contour.MidPointsCount)
};
Triangulate(contour.contour, plane, vertices, normals, uvs, tangents, vertexColors, trianglesCut, true, useMeshTangents, useVertexColors, useNormals);
#if PROFILING
MeasureIt.End("Triangulate");
#endif
}
if (vertices[0].Count > 3 && vertices[1].Count > 3)
{
#if PROFILING
MeasureIt.Begin("CutEndCopyBack");
#endif
mesh0 = new ExploderMesh();
mesh1 = new ExploderMesh();
var verticesArray0 = vertices[0].ToArray();
var verticesArray1 = vertices[1].ToArray();
mesh0.vertices = verticesArray0;
mesh0.uv = uvs[0].ToArray();
mesh1.vertices = verticesArray1;
mesh1.uv = uvs[1].ToArray();
if (useNormals)
{
mesh0.normals = normals[0].ToArray();
mesh1.normals = normals[1].ToArray();
}
if (useMeshTangents)
{
mesh0.tangents = tangents[0].ToArray();
mesh1.tangents = tangents[1].ToArray();
}
if (useVertexColors)
{
mesh0.colors32 = vertexColors[0].ToArray();
mesh1.colors32 = vertexColors[1].ToArray();
}
if (trianglesCut != null && trianglesCut[0].Count > 3)
{
triangles[0].AddRange(trianglesCut[0]);
triangles[1].AddRange(trianglesCut[1]);
}
mesh0.triangles = triangles[0].ToArray();
mesh1.triangles = triangles[1].ToArray();
mesh0.centroid = centroid0;
mesh0.min = min0;
mesh0.max = max0;
mesh1.centroid = centroid1;
mesh1.min = min1;
mesh1.max = max1;
#if PROFILING
MeasureIt.End("CutEndCopyBack");
#endif
meshes = new List <ExploderMesh> {
mesh0, mesh1
};
stopWatch.Stop();
return(stopWatch.ElapsedMilliseconds);
}
stopWatch.Stop();
// UnityEngine.Debug.Log("Empty cut! " + vertices[0].Count + " " + vertices[1].Count);
return(stopWatch.ElapsedMilliseconds);
}
/// <summary>
/// find and isolate independent (not connecting) parts in a mesh
/// </summary>
public static List <ExploderMesh> IsolateMeshIslands(ExploderMesh mesh)
{
var triangles = mesh.triangles;
var vertexCount = mesh.vertices.Length;
// cache mesh data
var trianglesNum = mesh.triangles.Length;
var tangents = mesh.tangents;
var colors = mesh.colors32;
var vertices = mesh.vertices;
var normals = mesh.normals;
var uvs = mesh.uv;
var useMeshTangents = tangents != null && tangents.Length > 0;
var useVertexColors = colors != null && colors.Length > 0;
var useNormals = normals != null && normals.Length > 0;
if (trianglesNum <= 3)
{
return(null);
}
ExploderUtils.Assert(trianglesNum > 3, "IsolateMeshIslands error: " + trianglesNum);
var lsHash = new LSHash(0.1f, vertexCount);
var vertHash = new int[trianglesNum];
for (int i = 0; i < trianglesNum; i++)
{
vertHash[i] = lsHash.Hash(vertices[triangles[i]]);
}
var islands = new List <HashSet <int> > {
new HashSet <int> {
vertHash[0], vertHash[1], vertHash[2]
}
};
var islandsIdx = new List <List <int> > {
new List <int>(trianglesNum)
{
0, 1, 2
}
};
var triVisited = new bool[trianglesNum];
triVisited[0] = true;
triVisited[1] = true;
triVisited[2] = true;
var currIsland = islands[0];
var currIslandIdx = islandsIdx[0];
var counter = 3;
var lastInvalidIdx = -1;
var loopCounter = 0;
while (true)
{
var foundIsland = false;
for (int j = 3; j < trianglesNum; j += 3)
{
if (triVisited[j])
{
continue;
}
if (currIsland.Contains(vertHash[j]) ||
currIsland.Contains(vertHash[j + 1]) ||
currIsland.Contains(vertHash[j + 2]))
{
currIsland.Add(vertHash[j]);
currIsland.Add(vertHash[j + 1]);
currIsland.Add(vertHash[j + 2]);
currIslandIdx.Add(j);
currIslandIdx.Add(j + 1);
currIslandIdx.Add(j + 2);
triVisited[j] = true;
triVisited[j + 1] = true;
triVisited[j + 2] = true;
counter += 3;
foundIsland = true;
}
else
{
lastInvalidIdx = j;
}
}
if (counter == trianglesNum)
{
break;
}
if (!foundIsland)
{
// create new island
currIsland = new HashSet <int> {
vertHash[lastInvalidIdx], vertHash[lastInvalidIdx + 1], vertHash[lastInvalidIdx + 2]
};
currIslandIdx = new List <int>(trianglesNum / 2)
{
lastInvalidIdx, lastInvalidIdx + 1, lastInvalidIdx + 2
};
islands.Add(currIsland);
islandsIdx.Add(currIslandIdx);
}
loopCounter++;
if (loopCounter > 100)
{
ExploderUtils.Log("10000 loop exceeded, islands: " + islands.Count);
break;
}
}
var islandNum = islands.Count;
ExploderUtils.Assert(islandNum >= 1, "No island found!");
// no more than one islands
if (islandNum == 1)
{
return(null);
}
var result = new List <ExploderMesh>(islands.Count);
foreach (var island in islandsIdx)
{
var cutterMesh = new ExploderMesh();
var triCount = island.Count;
var m = cutterMesh;
var tt = new List <int>(triCount);
var vs = new List <Vector3>(triCount);
var ns = new List <Vector3>(triCount);
var us = new List <Vector2>(triCount);
var cs = new List <Color32>(triCount);
var ts = new List <Vector4>(triCount);
var triCache = new Dictionary <int, int>(trianglesNum);
var centroid = Vector3.zero;
var centroidCounter = 0;
var triCounter = 0;
foreach (var i in island)
{
var tri = triangles[i];
var id = 0;
if (triCache.TryGetValue(tri, out id))
{
tt.Add(id);
continue;
}
tt.Add(triCounter);
triCache.Add(tri, triCounter);
triCounter++;
centroid += vertices[tri];
centroidCounter++;
vs.Add(vertices[tri]);
us.Add(uvs[tri]);
if (useNormals)
{
ns.Add(normals[tri]);
}
if (useVertexColors)
{
cs.Add(colors[tri]);
}
if (useMeshTangents)
{
ts.Add(tangents[tri]);
}
}
m.vertices = vs.ToArray();
m.uv = us.ToArray();
if (useNormals)
{
m.normals = ns.ToArray();
}
if (useVertexColors)
{
m.colors32 = cs.ToArray();
}
if (useMeshTangents)
{
m.tangents = ts.ToArray();
}
m.triangles = tt.ToArray();
cutterMesh.centroid = centroid / centroidCounter;
result.Add(cutterMesh);
}
return(result);
}
/// <summary>
/// returns list of fragments with requested size
/// this method pick fragments hidden from camera or sleeping rather then visible
/// </summary>
/// <param name="size">number of requested fragments</param>
/// <returns>list of fragments</returns>
public List <Fragment> GetAvailableFragments(int size)
{
if (size > pool.Length)
{
Debug.LogError("Requesting pool size higher than allocated! Please call Allocate first! " + size);
return(null);
}
if (size == pool.Length)
{
return(new List <Fragment>(pool));
}
var fragments = new List <Fragment>();
int counter = 0;
// get deactivated fragments first
foreach (var fragment in pool)
{
// get invisible fragments
if (!fragment.activeObj)
{
fragments.Add(fragment);
counter++;
}
if (counter == size)
{
return(fragments);
}
}
foreach (var fragment in pool)
{
// get invisible fragments
if (!fragment.visible)
{
fragments.Add(fragment);
counter++;
}
if (counter == size)
{
return(fragments);
}
}
// there are still live fragments ... get sleeping ones
if (counter < size)
{
foreach (var fragment in pool)
{
if (fragment.IsSleeping() && fragment.visible)
{
ExploderUtils.Assert(!fragments.Contains(fragment), "!!!");
fragments.Add(fragment);
counter++;
}
if (counter == size)
{
return(fragments);
}
}
}
// there are still live fragments...
if (counter < size)
{
foreach (var fragment in pool)
{
if (!fragment.IsSleeping() && fragment.visible)
{
ExploderUtils.Assert(!fragments.Contains(fragment), "!!!");
fragments.Add(fragment);
counter++;
}
if (counter == size)
{
return(fragments);
}
}
}
ExploderUtils.Assert(false, "ERROR!!!");
return(null);
}
/// <summary>
/// create pool (array) of fragment game objects with all necessary components
/// </summary>
/// <param name="poolSize">number of fragments</param>
/// <param name="useMeshColliders">use mesh colliders</param>
/// <param name="use2dCollision">enable Unity 2D collision system</param>
public void Allocate(int poolSize, bool useMeshColliders, bool use2dCollision)
{
ExploderUtils.Assert(poolSize > 0, "");
if (pool == null || pool.Length < poolSize || useMeshColliders != this.meshColliders)
{
// if (useMeshColliders != meshColliders)
// {
// Debug.LogWarning("Re-allocating pool, mesh colliders");
// }
DestroyFragments();
pool = new Fragment[poolSize];
this.meshColliders = useMeshColliders;
GameObject fragmentPrefab = null;
var fragmentInScene = GameObject.FindObjectOfType <Fragment>();
if (fragmentInScene)
{
fragmentPrefab = fragmentInScene.gameObject;
}
else
{
var fragmentResource = Resources.Load("ExploderFragment");
if (fragmentResource)
{
fragmentPrefab = Instantiate(fragmentResource) as GameObject;
}
}
for (int i = 0; i < poolSize; i++)
{
GameObject fragment = null;
if (fragmentPrefab)
{
fragment = Instantiate(fragmentPrefab) as GameObject;
fragment.name = "fragment_" + i;
}
else
{
fragment = new GameObject("fragment_" + i);
}
fragment.AddComponent <MeshFilter>();
fragment.AddComponent <MeshRenderer>();
if (use2dCollision)
{
fragment.AddComponent <PolygonCollider2D>();
fragment.AddComponent <Rigidbody2D>();
}
else
{
if (useMeshColliders)
{
var meshCollider = fragment.AddComponent <MeshCollider>();
meshCollider.convex = true;
}
else
{
fragment.AddComponent <BoxCollider>();
}
fragment.AddComponent <Rigidbody>();
}
fragment.AddComponent <ExploderOption>();
var fragmentComponent = fragment.GetComponent <Fragment>();
if (!fragmentComponent)
{
fragmentComponent = fragment.AddComponent <Fragment>();
}
fragment.transform.parent = gameObject.transform;
pool[i] = fragmentComponent;
ExploderUtils.SetActiveRecursively(fragment.gameObject, false);
fragmentComponent.RefreshComponentsCache();
fragmentComponent.Sleep();
}
}
}
