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Layering method for feather animation

  • US 20070270092A1
  • Filed: 04/21/2006
  • Published: 11/22/2007
  • Est. Priority Date: 04/21/2006
  • Status: Active Grant
First Claim
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1. A method of animating feather elements, comprising:

  • specifying initial positions for a skin surface;

    specifying initial positions for a plurality of feather elements, each feather element including a shaft having a root at a proximal end for attaching the feather element to the skin surface at a root-attachment point and a tip at a distal end away from the skin surface, and the feather element further including vane structures extending laterally from the shaft;

    specifying positions for the skin surface at an animated time;

    determining a feather-ordering sequence for placing the feather elements on the skin surface;

    determining positions for a plurality of skirt elements that provide spatial extensions for the skin surface at the animated time;

    determining positions for a plurality of feather-proxy elements that provide spatial extensions for the feather elements at the animated time, wherein the feather-proxy elements are determined from the skirt elements according to the feather-ordering sequence, and the feather-proxy elements satisfy a separation criterion for avoiding intersections between the feather-proxy elements; and

    determining positions for the feather elements at the animated time by extracting the feather elements from the feather-proxy elements.

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