def cookieExample():
# construct a christmas cookie with the help of the shapes
star = Star(radius=2.0, center=(1.0, 3.0), beams=5, iradius=1.4)
circle = Circle(radius=1.0, center=(1.0, 3.0), points=64)
cookie = star - circle
# shift star and circle to the right to plot all polygons
# on one page
star.shift(5.0, 0.0)
circle.shift(10.0, 0.0)
# plot all three to an svg file
writeSVG('Cookie.svg', (cookie, star, circle))
# break a polygon object into a list of polygons by arranging
# it on tiles
# tile into 3x3 parts
plist = tileEqual(cookie, 3, 3)
writeSVG('CookieTiled1.svg', plist)
# test tile at x = 0.3, 0.5 and y = 2.7, 3.1
plist = tile(cookie, [0.3, 0.5], [2.7, 3.1])
writeSVG('CookieTiled2.svg', plist)
# let's simulate an explosion, move all parts away
# from the cookie's center, small parts are faster
xc, yc = cookie.center()
for p in plist:
if p:
# speed/distance
dval = 0.1 / p.area()
x, y = p.center()
# move the part a little bit
p.shift(dval * (x - xc), dval * (y - yc))
# and rotate it slightly ;-)
p.rotate(0.2 * math.pi * (random.random() - 0.5))
writeSVG('CookieExploded.svg', plist)
def cookieExample():
# construct a christmas cookie with the help of the shapes
star = Star(radius=2.0, center=(1.0, 3.0), beams=5, iradius=1.4)
circle = Circle(radius=1.0, center=(1.0, 3.0), points=64)
cookie = star-circle
# shift star and circle to the right to plot all polygons
# on one page
star.shift(5.0, 0.0)
circle.shift(10.0, 0.0)
# plot all three to an svg file
writeSVG('Cookie.svg', (cookie, star, circle))
# break a polygon object into a list of polygons by arranging
# it on tiles
# tile into 3x3 parts
plist = tileEqual(cookie, 3, 3)
writeSVG('CookieTiled1.svg', plist)
# test tile at x = 0.3, 0.5 and y = 2.7, 3.1
plist = tile(cookie, [0.3, 0.5], [2.7, 3.1])
writeSVG('CookieTiled2.svg', plist)
# let's simulate an explosion, move all parts away
# from the cookie's center, small parts are faster
xc, yc = cookie.center()
for p in plist:
if p:
# speed/distance
dval = 0.1 / p.area()
x, y = p.center()
# move the part a little bit
p.shift(dval*(x-xc), dval*(y-yc))
# and rotate it slightly ;-)
p.rotate(0.2*math.pi*(random.random()-0.5))
writeSVG('CookieExploded.svg', plist)
def gridExample():
starGrid = cloneGrid(Star(beams=5), 0, 20, 20, 4, 4)
starGrid.shift(-50, -50)
cookie = Star(radius=30.0, beams=5, iradius=20.0) - Circle(radius=15.0)
starCookie = cookie - starGrid
writeSVG('StarCookie.svg', (starCookie,))
if hasPDFExport:
writePDF('StarCookie.pdf', (starCookie,))
def moonExample():
# a high-resolution, softly flickering moon,
# constructed by the difference of two stars ...
moon = Star(radius=3, center=(1.0, 2.0), beams=140, iradius=2.90) \
- Star(radius=3, center=(-0.3, 2.0), beams=140, iradius=2.90)
# plot the moon and its convex hull
writeSVG('MoonAndHull.svg', (moon, convexHull(moon)), height=400, fill_opacity=(1.0, 0.3))
# test point containment
d = ['outside', 'inside']
c = moon.center()
print 'Did you know that the center of gravitation of my moon is %s?' % d[moon.isInside(c[0], c[1])]
def moonExample():
# a high-resolution, softly flickering moon,
# constructed by the difference of two stars ...
moon = Star(radius=3, center=(1.0, 2.0), beams=140, iradius=2.90) \
- Star(radius=3, center=(-0.3, 2.0), beams=140, iradius=2.90)
# plot the moon and its convex hull
writeSVG('MoonAndHull.svg', (moon, convexHull(moon)), height=400, fill_opacity=(1.0, 0.3))
# test point containment
d = ['outside', 'inside']
c = moon.center()
print 'Did you know that the center of gravitation of my moon is %s?' % d[moon.isInside(c[0], c[1])]
def testCoverOverlap(self):
p1 = Star(radius=1.0, beams=6)
p2 = Polygon.Polygon(p1)
p2.scale(0.9, 0.9)
self.assertEqual(p1.covers(p2), 1)
self.assertEqual(p1.overlaps(p2), 1)
p2.shift(0.2, 0.2)
self.assertEqual(p1.covers(p2), 0)
self.assertEqual(p1.overlaps(p2), 1)
p2.shift(5.0, 0.0)
self.assertEqual(p1.covers(p2), 0)
self.assertEqual(p1.overlaps(p2), 0)
def star(pos=(0,0), radius=1.0, n=5, iradius=None, rotate=0.0, thickness=0.0,
roundness=0.0, invert=False, scale=1.0, xscale=1.0, yscale=1.0):
if iradius == None: iradius = radius*0.5
if thickness == 0.0:
pstar = Star(radius=radius, center=pos, beams=n, iradius=iradius)
cp = pstar[0]
cp.append(cp[0])
cp.reverse() # Polygon Star goes around clockwise, so reverse to go CCW
cp = rotatecp(cp, pos, rotate)
if scale != 1.0: xscale = yscale = scale
pp = Polygon(cp)
if xscale != 1.0 or yscale != 1.0: pp.scale(xscale,yscale)
if roundness > 0:
cp = roundc(pp.contour(0), roundness=roundness, invert=invert)
return Polygon(cp)
else: return pp
else:
pp = sframe(pos=pos, radius=radius, iradius=iradius, rotate=rotate,
thickness=thickness, roundness=roundness, invert=invert,
scale=scale, xscale=xscale, yscale=yscale, n=n)
return pp
def setUp(self):
star = Star(radius=2.0, center=(1.0, 3.0), beams=5, iradius=1.4)
circle = Circle(radius=1.0, center=(1.0, 3.0), points=64)
self.cookie = star-circle
self.cont = [(0.0, 0.0), (2.0, 1.0), (1.0, 0.0), (-2.0, 1.0), (0.0, 0.0)]
def gnuplotExample():
cookie = Star(radius=2.0, center=(1.0, 3.0), beams=5, iradius=1.4) \
- Circle(radius=1.0, center=(1.0, 3.0))
writeGnuplot('cookie.gp', (cookie,))
writeGnuplotTriangles('cookieTri.gp', (cookie,))
def xmlExample():
cookie = Star(radius=2.0, center=(1.0, 3.0), beams=5, iradius=1.4) \
- Circle(radius=1.0, center=(1.0, 3.0))
writeXML('cookie.xml', (cookie,), withHeader=True)
p = readXML('cookie.xml')
from Polygon import *
from Polygon.Shapes import Circle, Star, Rectangle
from Polygon.IO import writeSVG
p = Circle(5.5, points=128)
p -= Circle(4.4, points=128)
p += Circle(3.3, points=128)
p -= Circle(2.2, points=128)
p += Star(1.1)
l = Rectangle(4, 14)
l.shift(-4.3, -10.5)
r = p ^ l
writeSVG('logo.svg', [r], width=800)
