Certainly for the storm and fire sequence, a digital model was animated to get the perspective correct in the finished images. If I read correctly, they traced the outlines of the animated wireframe to create the more traditional animated cels. However, the "Great Mouse Detective" was the first Disney production to use digital wireframes for perspective reference. However, the concept itself was not new even then. For "Cinderella", a physical model of the pumpkin coach was sculpted. They painted it white with distinctive black lines for all the details they wanted to show in the final product. The model was photographed one frame at a time, changing the position and angle of the model (just like "King Kong") and they projected the images onto the rough sheets for penciling. Earlier productions may have used this technique. It's just that with the advent of digital animation, a physical model was no longer required. The concept is the same. Sincerely, Bill

Tempt the Hand of Fate and it'll give you the "finger"!