Tile Partial
A TilePartial is used to render at least a portion of a missing tile at the closest available level-of-detail. There are three cases of instantiation:
Closest available level-of-detail is an ancestor of a tile.
The
target
tile is completely covered by a portion of thefound
tile.There is no positional offset nor scaling of the
found
tile, it will cover thetarget
tile in its entirety.There is a UV offset to render the relevant portion of the
found
tile.Closest available level-of-detail is a descendant tile.
The
target
tile is partially covered by thefound
tile.There is a positional offset and scale of the
found
tile relative to thetarget
tile.Thre is no UV offset, the
found
tile is rendered in its entirety.Closest available level-of-detail is an ancestor of the
target
, but is used to cover a missing descedant. This occurs when one or more descendant tiles cover a portion of thetarget
tile, but an ancestor is required to fill in a missing descendant.The
target
tile is partially covered by thefound
tile.There is a positional offset and scale of the
found
tile relative to the descendant the tile is covering.There is a UV offset to render the relevant portion of the
found
tile which covers descendant.