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semanticer/Christmas Tree Core Functions

Created January 2, 2015 12:39
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Christmas Tree Core Functions
-- creates tree in list structure
tree bc gf fbs = [block rows (treeMaxSp bc gf fbs) | rows <- take bc [fbs,(fbs+gf)..]]
-- counts maximal number of spaces for given tree
treeMaxSp bc gf fbs = ((bc-1)*gf)+(fbs-1)
-- creates one block with specified number of rows and maximal space
block rowCount maxSp = [row st sp | (st,sp) <- take rowCount (zip [1,3..] [maxSp,maxSp-1..0])]
-- creates one row with specified number of stars and spaces
row st sp = take sp (repeat ' ') ++ take st (repeat '*')
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