Thanks for your explanation. I am not familiar with the algorithm.. but just curious, would there be any difference if the Depth takes in negative integer (currently only positive accepted) ? Can you comment on this ? If the bumpmap can be improved, many other scripts/plugins which calls this will benefit from it.. re, lasm gallery-> http://gug.sunsite.dk/gallery.php?artist=41 --- Federico Mena Quintero <federico@xxxxxxxxxx> wrote: > > The Bumpmap plug-in works by taking the intensity values to be height > values and computing the surface normal at each point. Then it does > simple Gouraud-like shading on the destination image. Inverting the > bumpmap source is exactly the same as using the "invert" button on > the > plug-in's dialog box; the intensity values are inverted and the > surface normals will point in the opposite direction. > > I.e. it is essentially a cheap embossing effect. > > Photoshop's Lighting Effects produces much better results because it > actually does Phong shading of the image, and it general it has > better > lighting models that you can choose. You can do this in the GIMP > with > Tom Bech's plug-in of the same name. > > Federico ===== ============================ Master's New Millennium Lecture Tour in Asia 2000 !!! see http://www.godsimmediatecontact.com visit these great web sites at http://www.GodsImmediateContact.com/INTRODUCTION_video.html http://members.xoom.com/meditations/ __________________________________________________ Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/
