diff -r ca7d4c665531 -r 9eb71e76c7fd demos/spheres_glass.py
--- a/demos/spheres_glass.py	Sat May 10 14:29:37 2008 +0200
+++ b/demos/spheres_glass.py	Thu May 15 00:07:25 2008 +0200
@@ -23,12 +23,12 @@
 
 mat1 = Material(colour=(1.0, 0.2, 0.1))
 mat1.setReflectivity(0.7)
-bigsphere = Sphere(centre=(12.0, 4.0, 6.0), radius=2.5, material=mat1)
+bigsphere = Sphere(center=(12.0, 4.0, 6.0), radius=2.5, material=mat1)
 rt.addShape(bigsphere)
 
 mat2 = Material(colour=(0.1, 0.4, 0.2))
 mat2.setReflectivity(0.6)
-smallsphere = Sphere(centre=(6.5, 3.5, 8.0), radius=2.0, material=mat2)
+smallsphere = Sphere(center=(6.5, 3.5, 8.0), radius=2.0, material=mat2)
 rt.addShape(smallsphere)
 
 mat3 = Material(colour=(0.9, 0.9, 1.0))
@@ -36,12 +36,13 @@
 mat3.setTransmissivity(0.88)
 mat3.setReflectivity(0.1)
 for i in range(10):
-	sph = Sphere(centre=(5.0+i, 1.5, 4.0), radius=0.5, material=mat3)
+	sph = Sphere(center=(5.0+i, 1.5, 4.0), radius=0.5, material=mat3)
 	rt.addShape(sph)
 
 top.optimize()
 
 sampler = DefaultSampler(800, 600)
+sampler.setOversample(1)
 rt.setSampler(sampler)
 rt.render()
 sampler.getPixmap().writePNG('spheres_glass.png')