Bob, If the tutorial you are referring to is the one freely distributed by SUN, you read a little more into the material than is there, or there is a mistake. If you feel there is a mistake in the tutorial, or even if you think it is misleading, please tell me which section/page/paragraph ... . I will strive to improve it. As far as material properties go, you can only provide one Material Object per visual object. You can provide diffuse and ambient colors for a visual object on a per-vertex basis. But this is not face dependent. There is no way to color one side of a polygon differently that another. The tutorial talks about having both sides shaded (but not differently) by turning off back face culling and flipping the normals. By the way... A new version of the tutorial has been released. I saw it on the Java 3D Collateral page this morning. (see my sig) The newest chapter, Lights, has a section (6.4.2) on how you can specify colors for visual objects. The information in this section is not available in any other documentation. Dennis Bob wrote: > > Hello : > > Does anybody know how to attach a different material to the front and > back side of a polygon? > > What I am trying to achieve is that the front side of the polygon is lit > > differently than the back side. I was reading a tutorial which said that > > its possible to do it and you have to disable the culling and use the > method "setBackFaceNormalFlip(true)" so that the normals of the back > facing polygons should be flipped prior to lighting. It never explained > how to actually apply different material on both sides of the polygon? > Is it possible? > -- ----- Dennis J Bouvier [EMAIL PROTECTED] Find the Java 3D Tutorial "Getting Started with the Java 3D API" at http://sun.com/desktop/java3d/collateral ===================================================================== To subscribe/unsubscribe, send mail to [EMAIL PROTECTED] Java 3D Home Page: http://java.sun.com/products/java-media/3D/
