#title: Sheet I-Cord Cast-On (python with knitout module)
# Casts on a sheet by knitting a small tube, leaving one stitch on the bed each time; slow but fancy.

import knitout
K = knitout.Writer('1 2 3 4 5 6 7 8 9 10');
K.addHeader('Machine', 'SWGN2');

#Parameters:
min = 1 #needle number of left edge
max = 20 #needle number of right edge
carrier = "3" #carrier name
cordWidth = 4 #cord width

#Bring in carrier:
K.inhook(carrier)
#Set stitch table entry for cast-on:
K.stitchNumber(101)

#On SWGN2 machines, carriers start on the right,
#so will start by making a closed tube bind-off for the cord on the right.

#All-needle closed-tube cast-on, with carrier ending on the left:
K.rack(-0.75)
for n in range(max, max - cordWidth-1, -1):
	K.tuck("-", 'f' + str(n), carrier)
	K.tuck("-", 'b' + str(n), carrier)
K.rack(0)

#Set stitch table entry for knitting:
K.stitchNumber(105)

#Knit a small tube, leaving an extra stitch to the right and moving the stitches every course:
#Start first course of the tube:
for n in range(max - cordWidth, max+1, 1):
	K.knit("+", 'f' + str(n), carrier)
#send out yarn inserting hook; it is no longer needed to hold the yarn in place:
K.releasehook(carrier)
#Middle of tube:
for tubeMax in range(max, min-1, -1):
	for n in range(tubeMax, tubeMax - cordWidth-1, -1):
		K.knit("-", 'b' + str(n), carrier)
	K.miss("-", 'b' + str(tubeMax-cordWidth-1), carrier)
	for n in range(tubeMax - cordWidth, tubeMax+1, 1):
		K.xfer('f' + str(n), 'bs' + str(n))
	K.rack(-1)
	for n in range(tubeMax - cordWidth, tubeMax+1, 1):
		K.xfer('bs' + str(n), 'f' + str(n-1))
	K.rack(0)
	for n in range(tubeMax - cordWidth, tubeMax+1, 1):
		K.knit("+", 'f' + str(n-1), carrier)
	K.tuck("+", 'f' + str(tubeMax), carrier)
	for n in range(tubeMax - cordWidth, tubeMax+1, 1):
		K.xfer('b' + str(n), 'fs' + str(n))
	K.rack(1)
	for n in range(tubeMax - cordWidth, tubeMax+1, 1):
		K.xfer('fs' + str(n), 'b' + str(n-1))
	K.rack(0)
#Finish last course of tube (and get carrier to the left):
for n in range(min - 1, min - cordWidth - 1-1, -1):
	K.knit("-", 'b' + str(n), carrier)

#Closed bind-off on the tube:
for n in range(min - cordWidth - 1, min - 1+1, 1):
	K.xfer('b' + str(n), 'f' + str(n))
	K.knit("+", 'f' + str(n), carrier)
	K.rack(-1)
	K.xfer('f' + str(n), 'b' + str(n+1))
	K.knit("+", 'b' + str(n+1), carrier)
	K.rack(0)
K.xfer('b' + str(min), 'f' + str(min))

#Knit regular course to get carrier to the right:
for n in range(min, max+1, 1):
	K.knit("+", 'f' + str(n), carrier)

#...now can knit on [min,max].

K.write('sheet-i-cord-cast-on.swgn2.k')