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 testLargeOperations(self):
sheet = Rectangle(1000, 500)
perf = cloneGrid(Circle(0.5, points=32), 0, 200, 100, 5, 5)
perfSheet = sheet - perf
#print 'perfSheet has %d points in %d contours' % (perfSheet.nPoints(), len(perfSheet))
circle = Circle(400, points=512)
circle.scale(1.0, 0.5)
circle.shift(500, 250)
perfCircle = circle & perfSheet
#print 'perfCircle has %d points in %d contours' % (perfCircle.nPoints(), len(perfCircle))
perfCircle.write('perfcircle.gpf')
def testLargeOperations(self):
sheet = Rectangle(1000, 500)
perf = cloneGrid(Circle(0.5, points=32), 0, 200, 100, 5, 5)
perfSheet = sheet - perf
circle = Circle(400, points=512)
circle.scale(1.0, 0.5)
circle.shift(500, 250)
perfCircle = circle & perfSheet
perfCircle.write('perfcircle.gpf', )
c, h, p, hf = gpfInfo('perfcircle.gpf')
self.assertEqual(c, len(perfCircle))
self.assertEqual(p, perfCircle.nPoints())
self.assertEqual(hf, True)
