Phong Tessellation and PN Polygons for Polygonal Models
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We extend Phong tessellation and point normal (PN) triangles from the original triangular setting to arbitrary polygons by use of generalised barycentric coordinates and S-patches. In addition, a generalisation of the associated quadratic normal field is given as well as a simple algorithm for evaluating the polygonal extensions for a polygon with vertex normals on the GPU.
BibTeX
@inproceedings {egsh.20171012,
booktitle = {EG 2017 - Short Papers},
editor = {Adrien Peytavie and Carles Bosch},
title = {{Phong Tessellation and PN Polygons for Polygonal Models}},
author = {Hettinga, Gerben J. and Kosinka, Jiri},
year = {2017},
publisher = {The Eurographics Association},
ISSN = {1017-4656},
DOI = {10.2312/egsh.20171012}
}
booktitle = {EG 2017 - Short Papers},
editor = {Adrien Peytavie and Carles Bosch},
title = {{Phong Tessellation and PN Polygons for Polygonal Models}},
author = {Hettinga, Gerben J. and Kosinka, Jiri},
year = {2017},
publisher = {The Eurographics Association},
ISSN = {1017-4656},
DOI = {10.2312/egsh.20171012}
}