TRVMotionDetector.GetRect, IsRectValid

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The methods return rectangles around changed areas.

function IsRectValid(Index: Integer): Boolean;
function GetRect(Index: Integer): TRVMRect;

These methods can be called after calling DetectChanges.

DetectChanges returns the count of these rectangles. Index must be in the range from 0 to count - 1. Not all of these rectangles are valid, ignore rectangles with the indexes where IsRectValid returns False.