diff -r 7c3f38dff082 -r a5127346fbcd demos/render_nff.py
--- a/demos/render_nff.py	Sun Apr 20 16:48:24 2008 +0200
+++ b/demos/render_nff.py	Sun Apr 20 19:27:59 2008 +0200
@@ -2,7 +2,7 @@
 
 # read nff data from standart input and render image to render_nff.png
 # see http://tog.acm.org/resources/SPD/
-# only spheres and triangles are implemented
+# cylinders are not implemented
 
 from raytracer import Raytracer, Camera, Light, Material, Sphere, NormalVertex, Triangle
 from math import pi
@@ -72,6 +72,18 @@
 		rt.addshape(Triangle(vertices[0], vertices[1], vertices[2], mat))
 		for i in range(vertex_count)[3:]:
 			rt.addshape(Triangle(vertices[0], vertices[i-1], vertices[i], mat))
+	elif ln[0] == 'pp':	# Polygonal patch
+		mat.setSmooth(True)
+		vertex_count = int(ln[1])
+		vertices = []
+		for i in range(vertex_count):
+			ln = f.readline().split()
+			vertex = (float(ln[0]), float(ln[1]), float(ln[2]))
+			normal = (float(ln[3]), float(ln[4]), float(ln[5]))
+			vertices.append(NormalVertex(vertex, normal))
+		rt.addshape(Triangle(vertices[0], vertices[1], vertices[2], mat))
+		for i in range(vertex_count)[3:]:
+			rt.addshape(Triangle(vertices[0], vertices[i-1], vertices[i], mat))
 	else:
 		print "Not implemented:", line
 f.close()