#title: Cast-On Sampler (python with knitout module)
# Creates several sheets, all with different cast-ons.

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

#Parameters:
carrier = "3" #carrier name
min = 1 #needle number of left edge
max = 20 #needle number of right edge
rows = 20 #rows of knitting in each sample
cordWidth = 4 #cord width (for I-cord cast-on)

# === Alternating Tucks === 
#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 tucking onto needles right-to-left,
#and will be sure to tuck the rightmost needle in the first pass:
for n in range(max, min-1, -1):
	#tuck alternating needles, making sure to do the right edge:
	if (max - n) % 2 == 0:
		K.tuck("-", 'f' + str(n), carrier)
#now, moving left-to-right, tuck the needles that were not tucked on the first pass:
for n in range(min, max+1, 1):
	if (max - n) % 2 != 0:
		K.tuck("+", 'f' + str(n), carrier)
#Set stitch table entry for knitting:
K.stitchNumber(105)
#knit two plain rows to allow cast-on stitches to relax:
# two isn't set in stone here -- it's just convenient
# for this example code to have the carrier end up on the right.
for n in range(max, min-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)
for n in range(min, max+1, 1):
	K.knit("+", 'f' + str(n), carrier)
# ---- single jersey sheet ----
for r in range(0, rows+1, 1):
	if r % 2 == 0:
		#left-going row:
		for n in range(max, min-1, -1):
			K.knit("-", 'f' + str(n), carrier)
	else:
		#right-going row:
		for n in range(min, max+1, 1):
			K.knit("+", 'f' + str(n), carrier)

# ---- take carrier out and drop remaining loops ----
#Take carrier out with yarn inserting hook:
K.outhook(carrier)

#drop loops:
for n in range(min, max+1, 1):
	K.drop('f' + str(n))

# === All-Needle Welt === 
#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 tucking all needles right-to-left,
#and will be sure to tuck the leftmost back-bed needle last.

#Need to use quarter-pitch racking to tuck all needles in one pass:
K.rack(-0.75)

for n in range(max, min-1, -1):
	K.tuck("-", 'f' + str(n), carrier)
	K.tuck("-", 'b' + str(n), carrier)

#Return to aligned racking:
K.rack(0)

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

#Do a rows of plain knitting on the front and back:
for n in range(min, max+1, 1):
	K.knit("+", 'f' + str(n), carrier)
for n in range(max, min-1, -1):
	K.knit("-", 'b' + str(n), carrier)
#One can knit more on the front or back beds here to make a larger "welt" at the edge.

#Stack back-bed stitches with front-bed stitches:
for n in range(max, min-1, -1):
	K.xfer('b' + str(n), 'f' + str(n))

#knit a plain row through the stacked stitches and return carrier to the right edge:
for n in range(min, 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)
# ---- single jersey sheet ----
for r in range(0, rows+1, 1):
	if r % 2 == 0:
		#left-going row:
		for n in range(max, min-1, -1):
			K.knit("-", 'f' + str(n), carrier)
	else:
		#right-going row:
		for n in range(min, max+1, 1):
			K.knit("+", 'f' + str(n), carrier)

# ---- take carrier out and drop remaining loops ----
#Take carrier out with yarn inserting hook:
K.outhook(carrier)

#drop loops:
for n in range(min, max+1, 1):
	K.drop('f' + str(n))

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

#Use a twisted tuck to cast on every stitch.
#Note: this requires a new pass for every stitch, so is pretty slow!
#There are both faster and fancier cast-ons.
#On SWGN2 machines, carriers start on the right, so will start with rightmost needle.
#Miss the rightmost needle to ensure yarn inserting hook is parked to its right instead of left:
K.miss("-", 'f' + str(max), carrier)
for n in range(max, min-1, -1):
	K.tuck("+", 'f' + str(n), carrier)
#Set stitch table entry for knitting:
K.stitchNumber(105)
#knit a plain row to bring the carrier back to the right:
for n in range(min, 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)
# ---- single jersey sheet ----
for r in range(0, rows+1, 1):
	if r % 2 == 0:
		#left-going row:
		for n in range(max, min-1, -1):
			K.knit("-", 'f' + str(n), carrier)
	else:
		#right-going row:
		for n in range(min, max+1, 1):
			K.knit("+", 'f' + str(n), carrier)

# ---- take carrier out and drop remaining loops ----
#Take carrier out with yarn inserting hook:
K.outhook(carrier)

#drop loops:
for n in range(min, max+1, 1):
	K.drop('f' + str(n))

# === I-Cord === 
#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)
# ---- single jersey sheet ----
for r in range(0, rows+1, 1):
	if r % 2 == 0:
		#left-going row:
		for n in range(max, min-1, -1):
			K.knit("-", 'f' + str(n), carrier)
	else:
		#right-going row:
		for n in range(min, max+1, 1):
			K.knit("+", 'f' + str(n), carrier)

# ---- take carrier out and drop remaining loops ----
#Take carrier out with yarn inserting hook:
K.outhook(carrier)

#drop loops:
for n in range(min, max+1, 1):
	K.drop('f' + str(n))


K.write('cast-on-sampler.swgn2.k')