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API > API/Developer > API/Developer/TraceServices > API/Developer/TraceServices/IRegionTimeline
Description
Enumerates all regions that overlap a certain time interval in reverse. Will enumerate by depth but does not expose lanes.
| Name | EnumerateRegionsBackwards |
| Type | function |
| Header File | /Engine/Source/Developer/TraceServices/Public/TraceServices/Model/Regions.h |
| Include Path | #include "TraceServices/Model/Regions.h" |
bool EnumerateRegionsBackwards
(
double IntervalEnd,
double IntervalStart,
TFunctionRef < bool &)> Callback
) const
true if the enumeration finished, false if it was aborted by the callback returning false
Parameters
| Name | Remarks |
|---|---|
| Callback | a callback called for each region. Return false to abort iteration. |