import fontforge
import psMat
import math
import sys

source = sys.argv[1]
font = fontforge.open(source)
# Replace accented characters into references
font.selection.select("braille1237")
font.replaceWithReference()
font.selection.select("braille123", "braille127", "braille137")
font.replaceWithReference()
font.selection.select("braille13", "braille12")
font.replaceWithReference()
font.selection.select("braille1")
font.replaceWithReference()
font.selection.select(("ranges", "unicode", None), 0x1FCD, 0x1FCF, 0x1FDD, 0x1FDF)
font.replaceWithReference()
font.selection.all()
font.selection.select(("less", None), "I.straight", "dotlessi.straight", "l.straight", "ltailBR", "rtailBR")
font.selection.select(("less", "ranges", "unicode"), 0x207A, 0x207E, 0x208A, 0x208E)

hasLigation = True
try:
	font['lighy.fr']
	hasLigation = True
except TypeError:
	hasLigation = False

if hasLigation:
	font.selection.select(("less", "ranges"), "lighy.fr", "lighy.cc", "ligeq.fr", "ligeq.cc")
font.selection.select(("less", "ranges"), "braille1", "braille12345678")
font.replaceWithReference()

font.selection.select("braille1", "braille13", "braille12", "braille123", "braille127", "braille137", "braille1237")
for i in font.selection:
	glyph = font[i]
	glyph.unlinkRef()

# Remove overlapped area
font.selection.all()
font.removeOverlap()
for i in font:
	glyph = font[i]
	if len(glyph.references) > 0 and len(glyph.layers["Fore"]) > 0: # a mixed glyph
		glyph.unlinkRef()
		glyph.removeOverlap()

font.selection.all()
font.simplify(0.05, ("smoothcurves", "choosehv"), 0.1)

#font.em = 2000
font.selection.all()
font.layers["Fore"].is_quadratic = True
font.transform(psMat.skew(float(sys.argv[3]) / 180 * math.pi))
font.em = 1000

font.selection.all()
font.round()
font.removeOverlap()
font.simplify(0.01)
font.selection.all()
font.removeOverlap()

font.canonicalContours()
font.canonicalStart()
font.generate(sys.argv[2], flags = ("opentype"))