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- Abel J. P. Gomes, Sérgio Dias, José F. M. Morgado
- IEEE Congress on Evolutionary Computation
- 2010

- José F. M. Morgado, Abel J. P. Gomes
- International Conference on Computational Science
- 2004

Graphics systems usually have primitives for rendering straight-line segments, circles, Bézier curves and surfaces. However, they do not have generalized primitives for implicit curves and surfaces. This is so because current algorithms have serious difficulties in dealing with differential singularities (e.g. self-intersections). This paper is about a… (More)

- Vahid Mokhtari, Luis Seabra Lopes, +37 authors Pablo Bustos
- ICARSC
- 2015

- Abel J. P. Gomes, José F. M. Morgado, Edgar S. Pereira
- ACM Trans. Graph.
- 2009

Mathematical systems (e.g., Mathematica, Maple, Matlab, and DPGraph) easily plot planar algebraic curves implicitly defined by polynomial functions. However, these systems, and most algorithms found in the literature, cannot draw many implicit curves correctly; in particular, those with singularities (self-intersections, cusps, and isolated points). They do… (More)

- Rui S. V. Rodrigues, José F. M. Morgado, Abel J. P. Gomes
- Computers & Graphics
- 2015

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