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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/FInstanceAttributeTracker
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.
| Name | FDeltaRange |
| Type | class |
| Header File | /Engine/Source/Runtime/Engine/Public/InstancedStaticMesh/InstanceAttributeTracker.h |
| Include Path | #include "InstancedStaticMesh/InstanceAttributeTracker.h" |
Syntax
template<EFlag Flag>
class FDeltaRange
Constructors
| Name | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|
FDeltaRange () |
InstancedStaticMesh/InstanceAttributeTracker.h | ||
FDeltaRange
(
bool bInFullUpdate, |
InstancedStaticMesh/InstanceAttributeTracker.h |
Structs
| Name | Remarks |
|---|---|
| FConstIterator | Iterator for traversing the range of Items that need update. |
Constants
| Name | Type | Remarks | Include Path |
|---|---|---|---|
| IteratorMask | uint32 | InstancedStaticMesh/InstanceAttributeTracker.h |
Variables
Protected
| Name | Type | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|---|
| bFullUpdate | bool | InstancedStaticMesh/InstanceAttributeTracker.h | ||
| NumItems | int32 | InstancedStaticMesh/InstanceAttributeTracker.h | ||
| Tracker | const FInstanceAttributeTracker * | InstancedStaticMesh/InstanceAttributeTracker.h |
Functions
Public
| Name | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|
FConstIterator GetIterator() |
InstancedStaticMesh/InstanceAttributeTracker.h | ||
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. | InstancedStaticMesh/InstanceAttributeTracker.h | |
bool IsDelta() |
InstancedStaticMesh/InstanceAttributeTracker.h | ||
bool IsEmpty() |
InstancedStaticMesh/InstanceAttributeTracker.h |