View Full Version : silhouette of a cylinder

11-18-2009, 03:45 AM
hi everyone,

i have a solid cylinder and my task is to draw the silhouettes.

if i rotate the cylinder around the z-axis, it should still show the right silhouettes from my point of view.

has anybody an idea how to do this?

i am thankful for any kind of help.

11-18-2009, 11:44 PM
You need to check triangles sides and draw the ones that have normals almost perpendicular to the view direction.