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   * Subject: 33300 lines of drivvel from Scott...
   * Date: Tue, 1 Feb 1994 09:45:54 -0600 (CST) [46]
   * From:

I've worked on some Wrinkle textures (they will probably be released with V3.0), but haven't been to impressed with how they look. I've had the best luck actually modeling the draped/wrinkle look by actually pushing points around. Let's see if I can explain the process I use to do a draped table cloth.... Start out with the flat object (like a flat piece of fabric for a table cloth). Set up the part of the fabric that is touching the table with enough faces around the table edge to get the phong shading to look correct after you bend the cloth. The parts of the table cloth that hang down the sides of the tabel have to be built so that every other triangle that hangs down has one edge alligned to the edge of the table and that edge's opposite point on the outside edge of the cloth (every other triangle points out like teeth from the table to the edge of the cloth). The remaining triangles around the edge are inverted to those just mentioned (like teeth pointing from the cloth's edge in towards the table). (Sorry, this isn't really that difficult, it's just tough to explain in text.) Now pick all the points that make up the edge of the cloth and using move and scale, drag them down and under the table like they would be if hanging from the table top. Use Hide points to make all the table top points go away (you should only have the points that make up the edge of the cloth after this). Using Drag Points, just randomly push the points that make up the bottom edge of the table cloth around to make folds and wrinkles. That's it - render it. Should give you some ideas for doing more detailed wrinkles and for animating them (using states - states now has spline interpolated morphing - looks great, REALLY great!).

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