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[symfont] Move code around

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This commit is contained in:
Behdad Esfahbod 2017-02-20 17:48:09 -06:00
parent ba4d63ea1c
commit 08755ea1a4
1 changed files with 7 additions and 5 deletions
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12
Snippets/symfont.py
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@ -40,12 +40,10 @@ BezierCurveC = tuple(
sum(C[i]*bernstein for i,bernstein in enumerate(bernsteins))
for n,bernsteins in enumerate(BernsteinPolynomial))
def green(f, curveXY, optimize=True):
def green(f, curveXY):
f = -sp.integrate(sp.sympify(f), y)
f = f.subs({x:curveXY[0], y:curveXY[1]})
f = sp.integrate(f * sp.diff(curveXY[0], t), (t, 0, 1))
if optimize:
f = sp.gcd_terms(f.collect(sum(P,())))
return f
def printPen(penName, funcs, file=sys.stdout):
@ -101,7 +99,9 @@ class %s(BasePen):
x3,y3 = p3
''', file=file)
subs = {P[i][j]: [X, Y][j][i] for i in range(n+1) for j in range(2)}
greens = [green(f, BezierCurve[n]).subs(subs) for name,f in funcs]
greens = [green(f, BezierCurve[n]) for name,f in funcs]
greens = [sp.gcd_terms(f.collect(sum(P,()))) for f in greens] # Optimize
greens = [f.subs(subs) for f in greens] # Convert to p to x/y
defs, exprs = sp.cse(greens,
optimizations='basic',
symbols=(sp.Symbol('r%d'%i) for i in count()))
@ -128,7 +128,9 @@ class BezierFuncs(dict):
def __missing__(self, i):
args = ['p%d'%d for d in range(i+1)]
return sp.lambdify(args, green(self._symfunc, BezierCurve[i]))
f = green(self._symfunc, BezierCurve[i])
f = sp.gcd_terms(f.collect(sum(P,()))) # Optimize
return sp.lambdify(args, f)
class GreenPen(BasePen):