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charts.lines: update some names 

left-cut -> left-cut-x, min -> xmin; right-cut -> right-cut-x, max -> xmax.
char-rename
Alexander Iljin 2017-01-21 02:06:03 +03:00 committed by John Benediktsson
parent b0ec86be44
commit 6fee00014f
1 changed files with 7 additions and 7 deletions
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lines/lines.factor
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@ -68,9 +68,9 @@ ALIAS: y second
: last2 ( seq -- penultimate ultimate ) 2 tail* first2 ;
! Due to the way adjusted-tail-slice works, the first element of
! pairs is <= min, and if the first is < min, then the second is
! > min. Otherwise the first one would be = min.
: left-cut ( min pairs -- seq )
! pairs is <= xmin, and if the first is < xmin, then the second is
! > xmin. Otherwise the first one would be = xmin.
: left-cut-x ( xmin pairs -- seq )
2dup first x < [
[ dupd first2 y-at 2array ] keep rest-slice swap prefix
] [
@ -78,9 +78,9 @@ ALIAS: y second
] if ;
! Due to the way adjusted-head-slice works, the last element of
! pairs is >= max, and if the last is > max, then the second to
! last is < max. Otherwise the last one would be = max.
: right-cut ( max pairs -- seq )
! pairs is >= xmax, and if the last is > xmax, then the second to
! last is < xmax. Otherwise the last one would be = xmax.
: right-cut-x ( xmax pairs -- seq )
2dup last x < [
[ dupd last2 y-at 2array ] keep but-last-slice swap suffix
] [
@ -90,7 +90,7 @@ ALIAS: y second
! If the line spans beyond min or max, make sure there are points
! with x = min and x = max in seq.
: min-max-cut ( min,max pairs -- seq )
[ first2 ] dip right-cut left-cut ;
[ first2 ] dip right-cut-x left-cut-x ;
: clip-by-x ( min,max pairs -- pairs' )
2dup x-in-bounds? [