Sciweavers

CCCG
2008
13 years 5 months ago
Computational Balloon Twisting: The Theory of Balloon Polyhedra
This paper builds a general mathematical and algorithmic theory for balloon-twisting structures, from balloon animals to balloon polyhedra, by modeling their underlying graphs (ed...
Erik D. Demaine, Martin L. Demaine, Vi Hart
CCCG
2008
13 years 5 months ago
Data Structures for Restricted Triangular Range Searching
We present data structures for triangular emptiness and reporting queries for a planar point set, where the query triangle contains the origin. The data structures use near-linear...
Mashhood Ishaque, Diane L. Souvaine, Nadia Benbern...
CCCG
2008
13 years 5 months ago
The Embroidery Problem
We consider the problem of embroidering a design pattern, given by a graph G, using a single minimum length thread. We give an exact polynomial-time algorithm for the case that G ...
Esther M. Arkin, George Hart, Joondong Kim, Irina ...
CCCG
2008
13 years 5 months ago
The Steiner Ratio for Obstacle-Avoiding Rectilinear Steiner Trees
We consider the problem of finding a shortest rectilinear Steiner tree for a given set of points in the plane in the presence of rectilinear obstacles that must be avoided. We ext...
Mina Razaghpour, Anna Lubiw
CCCG
2008
13 years 5 months ago
Polar Diagram of Moving Objects
Many important problems in Computational Geometry needs to perform some kind of angle processing. The Polar Diagram [4] is a locus approach for problems processing angles. Using t...
Mojtaba Nouri Bygi, Mohammad Ghodsi