public override bool UpdateIfNeeded()
{
bool trigger = false;
if (collider is Collider)
{
trigger = ((Collider)collider).isTrigger;
}
else if (collider is Collider2D)
{
trigger = ((Collider2D)collider).isTrigger;
}
// retrieve collision world and index:
var world = ObiColliderWorld.GetInstance();
int index = source.Handle.index;
// decrease reference count of current handle if the df data it points to is different
// than the df used by the collider:
if (handle != null && handle.owner != distanceField)
{
if (handle.Dereference())
{
world.DestroyDistanceField(handle);
}
}
if (handle == null || !handle.isValid)
{
handle = world.GetOrCreateDistanceField(distanceField);
handle.Reference();
}
// update collider:
var shape = world.colliderShapes[index];
shape.type = ColliderShape.ShapeType.SignedDistanceField;
shape.phase = source.Phase;
shape.flags = trigger ? 1 : 0;
shape.rigidbodyIndex = source.Rigidbody != null ? source.Rigidbody.handle.index : -1;
shape.materialIndex = source.CollisionMaterial != null ? source.CollisionMaterial.handle.index : -1;
shape.contactOffset = source.Thickness;
shape.dataIndex = handle.index;
world.colliderShapes[index] = shape;
// update bounds:
var aabb = world.colliderAabbs[index];
aabb.FromBounds(distanceField.FieldBounds.Transform(source.transform.localToWorldMatrix), shape.contactOffset);
world.colliderAabbs[index] = aabb;
// update transform:
var trfm = world.colliderTransforms[index];
trfm.FromTransform(source.transform);
world.colliderTransforms[index] = trfm;
return(true);
}
public ObiDistanceFieldHandle GetOrCreateDistanceField(ObiDistanceField source)
{
ObiDistanceFieldHandle handle;
if (!handles.TryGetValue(source, out handle))
{
handle = new ObiDistanceFieldHandle(source, headers.count);
handles.Add(source, handle);
headers.Add(new DistanceFieldHeader(dfNodes.count, source.nodes.Count));
dfNodes.AddRange(source.nodes);
}
return(handle);
}
public void DestroyDistanceField(ObiDistanceFieldHandle 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.firstNode > header.firstNode)
{
h.firstNode -= header.nodeCount;
headers[i] = h;
}
}
// update handles:
foreach (var pair in handles)
{
if (pair.Value.index > handle.index)
{
pair.Value.index--;
}
}
// Remove nodes
dfNodes.RemoveRange(header.firstNode, header.nodeCount);
// remove header:
headers.RemoveAt(handle.index);
// remove the mesh from the dictionary:
handles.Remove(handle.owner);
// Invalidate our handle:
handle.Invalidate();
}
}
public void DestroyDistanceField(ObiDistanceFieldHandle dfHandle)
{
distanceFieldContainer.DestroyDistanceField(dfHandle);
}
