Pat Hanrahan
ABSTRACT
This paper describes a 3D object-space paint program. This program allows the user to directly manipulate the parameters used to shade the surface of the 3D shape by applying pigment to its surface. The pigment has all the properties normally associated with material shading models. This includes, but is not limited to, the diffuse color, the specular color, and the surface roughness. The pigment also can have thickness, which is modeled by simultaneously creating a bump map attached to the shape. The output of the paint program is a 3D model with associated texture maps. This information can be used with any rendering program with texture mapping capabilities. Almost all traditional techniques of 2D computer image painting have analogues in 3D object painting, but there are also many new techniques unique to 3D. One example is the use of solid textures to pattern the surface.
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Index Terms
- Direct WYSIWYG painting and texturing on 3D shapes: (An error occurred during the printing of this article that reversed the print order of pages 118 and 119. While we have corrected the sort order of the 2 pages in the DL, the PDF did not allow us to repaginate the 2 pages.)
Recommendations
Direct WYSIWYG painting and texturing on 3D shapes: (An error occurred during the printing of this article that reversed the print order of pages 118 and 119. While we have corrected the sort order of the 2 pages in the DL, the PDF did not allow us to repaginate the 2 pages.)
This paper describes a 3D object-space paint program. This program allows the user to directly manipulate the parameters used to shade the surface of the 3D shape by applying pigment to its surface. The pigment has all the properties normally associated ...
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