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fill
Flood fill, also called seed fill, is a flooding algorithm that determines and alters the area connected to a given node in a multi-dimensional array with some matching attribute. It is used in the "bucket" fill tool of paint programs to fill connected, similarly colored areas with a different color, and in games such as Go and Minesweeper for determining which pieces are cleared. A variant called boundary fill uses the same algorithms but is defined as the area connected to a given node that does not have a particular attribute.
Note that flood filling is not suitable for drawing filled polygons, as it will miss some pixels in more acute corners. Instead, see Even-odd rule and Nonzero-rule.
I will be crawling under my 77 CJ7 this weekend to drain and fill transmission and differentials. With regards to the transmission, is there a better way other than dropping the cross member/ skid plate? I have heard people allude to this but haven't heard how. First post here, so take it easy...