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[symfont] Shuffle

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This commit is contained in:
Behdad Esfahbod 2017-02-20 14:25:08 -06:00
parent 03e8f2e461
commit f13fbdae63
1 changed files with 42 additions and 33 deletions
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75
Snippets/symfont.py
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@ -53,37 +53,6 @@ def green(f, curveXY, optimize=True):
f = sp.gcd_terms(f.collect(sum(P,())))
return f
class BezierFuncs(object):
def __init__(self, symfunc):
self._symfunc = symfunc
self._bezfuncs = {}
def __getitem__(self, i):
if i not in self._bezfuncs:
args = []
for d in range(i+1):
args.append('x%d' % d)
args.append('y%d' % d)
self._bezfuncs[i] = sp.lambdify(args, green(self._symfunc, BezierCurve[i]))
return self._bezfuncs[i]
_BezierFuncs = {}
def getGreenBezierFuncs(func):
funcstr = str(func)
global _BezierFuncs
if not funcstr in _BezierFuncs:
_BezierFuncs[funcstr] = BezierFuncs(func)
return _BezierFuncs[funcstr]
def printCache(func, file=sys.stdout):
funcstr = str(func)
print("_BezierFuncs['%s'] = [" % funcstr, file=file)
for i in range(n+1):
print(' lambda P:', green(func, BezierCurve[i]), ',')
print(']', file=file)
def printPen(name, funcs, file=sys.stdout):
print(
'''from __future__ import print_function, division, absolute_import
@ -147,11 +116,44 @@ class {name}(BasePen):
# ('momentXY', x*y),
# ('momentYY', y*y)])
class BezierFuncs(object):
def __init__(self, symfunc):
self._symfunc = symfunc
self._bezfuncs = {}
def __getitem__(self, i):
if i not in self._bezfuncs:
args = []
for d in range(i+1):
args.append('x%d' % d)
args.append('y%d' % d)
self._bezfuncs[i] = sp.lambdify(args, green(self._symfunc, BezierCurve[i]))
return self._bezfuncs[i]
def printCache(func, file=sys.stdout):
funcstr = str(func)
print("GreenPen._BezierFuncs['%s'] = [" % funcstr, file=file)
for i in range(n+1):
print(' lambda P:', green(func, BezierCurve[i]), ',')
print(']', file=file)
class GreenPen(BasePen):
_BezierFuncs = {}
@classmethod
def _getGreenBezierFuncs(celf, func):
funcstr = str(func)
if not funcstr in celf._BezierFuncs:
celf._BezierFuncs[funcstr] = BezierFuncs(func)
return celf._BezierFuncs[funcstr]
def __init__(self, func, glyphset=None):
BasePen.__init__(self, glyphset)
self._funcs = getGreenBezierFuncs(func)
self._funcs = self._getGreenBezierFuncs(func)
self.value = 0
def _moveTo(self, p0):
@ -183,4 +185,11 @@ MomentYYPen = partial(GreenPen, func=y*y)
MomentXYPen = partial(GreenPen, func=x*y)
if __name__ == '__main__':
pen = AreaPen()
pen.moveTo((100,100))
pen.lineTo((100,200))
pen.lineTo((200,200))
pen.lineTo((200,100))
pen.closePath()
print(pen.value)