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object OverviewStrategy

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  1. def DEFAULT: OverviewStrategy
  2. def selectOverview(overviewCS: List[CellSize], desiredCS: CellSize, strategy: OverviewStrategy): Int

    Select appropriate overview given the strategy.

    Select appropriate overview given the strategy.

    WARN: this function assumes that CellSizes are sorted by their resolution, with "smaller" cell sizes appearing first. It interprets idx 0 as the position with the highest CellSize. If the input list is not sorted, this function returns idx 0.

    Unless a particular strategy suggests otherwise, this method will clamp the returned index to the range of overviewCS.

    overviewCS

    a list of CellSizes sorted by resolution, result is undefined for unsorted lists.

    desiredCS

    cellSize that would be searched

    strategy

    overview strategy used to search for the best matching CellSize

    returns

    index of the closest cellSize. Each strategy defines a different behavior: Level: selects the passed index and if it is OOB clamps the index. Auto(n): selects the best matching cellSize (approximately) and adds n, requires the input resolutions list to be sorted. Base: always returns the best matching cellSize from the given list of CellSizes. AutoHigherResolution: selects the best matching cellSize (approximately) always selects a higher resolution, requires the input resolutions list to be sorted.