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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/InstancedStaticMesh > API/Runtime/Engine/InstancedStaticMesh/FInstanceAttributeTracker
References
| Module | Engine |
| Header | /Engine/Source/Runtime/Engine/Public/InstancedStaticMesh/InstanceAttributeTracker.h |
| Include | #include "InstancedStaticMesh/InstanceAttributeTracker.h" |
Syntax
template<EFlag Flag>
class FDeltaRange
Remarks
Represents the delta range for a given attribute, can either refer to the tracked data or just a span, or be empty. "Added" is always implied & added on top. It is a helper to make it easier to iterate a change set.
Constructors
| Type | Name | Description | |
|---|---|---|---|
 |
FDeltaRange () |
||
 |
FDeltaRange
(
bool bInFullUpdate, |
Functions
| Type | Name | Description | |
|---|---|---|---|
  |
FConstIterator | GetIterator () |
|
  |
int32 | GetNumItems () |
Returns the number of items in this range - i.e., the number of items that need to be copied to collect an update. |
  |
bool | IsDelta () |
|
  |
bool | IsEmpty () |
Classes
| Type | Name | Description | |
|---|---|---|---|
 |
FConstIterator | Iterator for traversing the range of Items that need update. |
Constants
| Name | Description |
|---|---|
| IteratorMask |