diff -r ffe83ca074f3 -r 574c34441a1c demos/bunny.py
--- a/demos/bunny.py	Sat Dec 08 12:37:45 2007 +0100
+++ b/demos/bunny.py	Sat Dec 08 14:07:42 2007 +0100
@@ -7,63 +7,13 @@
 sys.path.append(open('ModulePath').read().strip())
 
 from raytracer import Raytracer, Light, Sphere, Triangle, NormalVertex, Material
+from plyreader import LoadStanfordPlyFile
 import Image
 
-def LoadStanfordPlyFile(rt, mat, filename, scale):
-	vertices = []
-	normals = []
-	vertex_face_num = []
-	fp = file(filename)
-	# read header
-	tokens = (0,)
-	while (tokens[0] != "end_header"):
-		tokens = fp.readline().split()
-		if (tokens[0] == "element"):
-			if (tokens[1] == "vertex"):
-				vertex_num = int(tokens[2])
-			if (tokens[1] == "face"):
-				face_num = int(tokens[2])
-
-	# read vertices
-	num = vertex_num
-	while (num):
-		tokens = fp.readline().split()
-		v = [scale*float(x) for x in tokens[0:3]]
-		v[0] = -v[0]-1
-		v[1] = v[1]-3
-		vertices.append(NormalVertex(tuple(v)))
-		normals.append([0.,0.,0.])
-		vertex_face_num.append(0)
-		num -= 1
-
-	# read faces
-	while (face_num):
-		tokens = fp.readline().split()
-		if (tokens[0] != "3"):
-			print "ply warning: faces of %d vertices not supported" % tokens[0]
-		v = [vertices[int(x)] for x in tokens[1:4]]
-		face = Triangle(v[0], v[2], v[1], mat)
-		n = face.getNormal()
-		for x in tokens[1:4]:
-			for i in range(3):
-				normals[int(x)][i] += n[i]
-			vertex_face_num[int(x)] += 1
-		face.setSmooth()
-		rt.addshape(face)
-		face_num -= 1
-
-	# interpolate normals at vertices
-	num = 0
-	while (num < vertex_num):
-		if (vertex_face_num[num] > 0):
-			for i in range(3):
-				normals[num][i] /= vertex_face_num[num]
-		vertices[num].setNormal(tuple(normals[num]))
-		num += 1
-
 rt = Raytracer()
 mat = Material(colour=(0.9, 0.9, 0.9))
-LoadStanfordPlyFile(rt, mat, "../models/bunny/bun_zipper.ply", 29.0)
+LoadStanfordPlyFile(rt, "../models/bunny/bun_zipper.ply",
+	mat, smooth=True, scale=(-29.0, 29.0, 29.0), trans=(-1,-3,-3))
 
 light = Light(position=(-5.0, 2.0, 10.0), colour=(0.9, 0.3, 0.6))
 rt.addlight(light)