public void DestroyEdgeMesh(ObiEdgeMeshHandle handle)
{
if (handle != null && handle.isValid && handle.index < handles.Count)
{
var header = headers[handle.index];
// Update headers:
for (int i = 0; i < headers.count; ++i)
{
var h = headers[i];
if (h.firstEdge > header.firstEdge)
{
h.firstNode -= header.nodeCount;
h.firstEdge -= header.edgeCount;
h.firstVertex -= header.vertexCount;
headers[i] = h;
}
}
// update handles:
foreach (var pair in handles)
{
if (pair.Value.index > handle.index)
{
pair.Value.index--;
}
}
// Remove nodes, triangles and vertices
bihNodes.RemoveRange(header.firstNode, header.nodeCount);
edges.RemoveRange(header.firstEdge, header.edgeCount);
vertices.RemoveRange(header.firstVertex, header.vertexCount);
// remove header:
headers.RemoveAt(handle.index);
// remove the collider from the dictionary:
handles.Remove(handle.owner);
// Invalidate our handle:
handle.Invalidate();
}
}
public override bool UpdateIfNeeded()
{
EdgeCollider2D edgeCollider = collider as EdgeCollider2D;
// retrieve collision world and index:
var world = ObiColliderWorld.GetInstance();
int index = source.Handle.index;
// get or create the mesh:
if (handle == null || !handle.isValid)
{
handle = world.GetOrCreateEdgeMesh(edgeCollider);
handle.Reference();
}
// update collider:
var shape = world.colliderShapes[index];
shape.is2D = 1;
shape.type = ColliderShape.ShapeType.EdgeMesh;
shape.phase = source.Phase;
shape.flags = edgeCollider.isTrigger ? 1 : 0;
shape.rigidbodyIndex = source.Rigidbody != null ? source.Rigidbody.handle.index : -1;
shape.materialIndex = source.CollisionMaterial != null ? source.CollisionMaterial.handle.index : -1;
shape.center = edgeCollider.offset;
shape.contactOffset = source.Thickness + edgeCollider.edgeRadius;
shape.dataIndex = handle.index;
world.colliderShapes[index] = shape;
// update bounds:
var aabb = world.colliderAabbs[index];
aabb.FromBounds(edgeCollider.bounds, shape.contactOffset, true);
world.colliderAabbs[index] = aabb;
// update transform:
var trfm = world.colliderTransforms[index];
trfm.FromTransform(edgeCollider.transform, true);
world.colliderTransforms[index] = trfm;
return(true);
}
public ObiEdgeMeshHandle GetOrCreateEdgeMesh(EdgeCollider2D source)
{
ObiEdgeMeshHandle handle;
if (!handles.TryGetValue(source, out handle))
{
Vector2[] sourceVertices = source.points;
int[] sourceEdges = new int[source.edgeCount * 2];
for (int i = 0; i < source.edgeCount; ++i)
{
sourceEdges[i * 2] = i;
sourceEdges[i * 2 + 1] = i + 1;
}
// Build a bounding interval hierarchy from the edges:
IBounded[] t = new IBounded[source.edgeCount];
for (int i = 0; i < source.edgeCount; ++i)
{
t[i] = new Edge(i, i + 1, sourceVertices[i], sourceVertices[i + 1]);
}
var sourceBih = BIH.Build(ref t);
Edge[] edgs = Array.ConvertAll(t, x => (Edge)x);
handle = new ObiEdgeMeshHandle(source, headers.count);
handles.Add(source, handle);
headers.Add(new EdgeMeshHeader(bihNodes.count, sourceBih.Length, edges.count, edgs.Length, vertices.count, sourceVertices.Length));
bihNodes.AddRange(sourceBih);
edges.AddRange(edgs);
vertices.AddRange(sourceVertices);
}
return(handle);
}
public void DestroyEdgeMesh(ObiEdgeMeshHandle meshHandle)
{
edgeMeshContainer.DestroyEdgeMesh(meshHandle);
}