import fontforge
import psMat
import math
import sys

source = sys.argv[1]
font = fontforge.open(source)

# Replace accented characters into references
print "Reference finding: ", font.fontname
font.selection.select(("ranges", "unicode", None), 0x1FCD, 0x1FCF, 0x1FDD, 0x1FDF)
font.replaceWithReference(4)
font.selection.none()
font.selection.select(("ranges", "unicode", None), 0x0300, 0x036F)
font.replaceWithReference(4)
font.selection.none()
font.selection.select(("ranges", "unicode", None), 0x0000, 0xFFFF)
font.replaceWithReference(4)
font.selection.none()

# Remove overlapped area
print "Overlap Removal: ", font.fontname
font.selection.all()
font.removeOverlap()
font.round()
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()

# Outline simplify
print "Simplify, pass 1: ", font.fontname
font.simplify(1)
font.layers["Fore"].is_quadratic = False
font.selection.all()
font.simplify(font.em / 1000.0 * 0.5, ("smoothcurves", "choosehv"), 0.1);

print "Simplify, pass 2: ", font.fontname
oldem = font.em
font.em = 1000
font.round()
font.simplify(0.25)
font.transform(psMat.skew(-font.italicangle / 180 * math.pi))
for i in font:
	font[i].addExtrema(("all"))
font.simplify(1, ("smoothcurves"), 0.05)
font.layers["Fore"].is_quadratic = True

print "Finalize: ", font.fontname
font.em = oldem
font.mergeFeature(sys.argv[2])

font.canonicalContours()
font.canonicalStart()
font.generate(sys.argv[3], flags = ("short-post", "opentype"))