Ara es mostren els items 1-20 de 75

  • A Brief on constraint solving 

    Hoffmann, Christoph M.; Joan Arinyo, Robert (2004-10-08)
    Report de recerca
    Accés obert
    We survey the current state of the art in geometric constraint solving. Both 2D and 3D constraint solving is considered, and different approaches are characterized.
  • A Constraint-Based Dynamic Geometry System 

    Freixas Boleda, Marc; Joan Arinyo, Robert; Soto Riera, Antoni (ACM, 2008)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Dynamic geometry systems are tools for geometric visualization. They allow the user to define geometric elements, establish relationships between them and explore the dynamic behavior of the remaining geometric elements ...
  • A constraint-based dynamic geometry system 

    Freixas Boleda, Marc; Joan Arinyo, Robert; Soto Riera, Antoni (Elsevier, 2010-02)
    Article
    Accés restringit per política de l'editorial
    Dynamic geometry systems are tools for geometric visualization. They allow the user to define geometric elements, establish relationships between them and explore the dynamic behavior of the remaining geometric elements ...
  • A Data structure for solving geometric construction problems with interval parameters 

    Joan Arinyo, Robert; Mata Burgarolas, Nuria (2000-04)
    Report de recerca
    Accés obert
    In advanced computer-aided design systems, an object is defined by a finite collection of points, linear segments, and circular segments, and a finite set of geometric constraints relating these points and segments. Given ...
  • A Henneberg-based algorithm for generating tree-decomposable minimally rigid graphs 

    Hidalgo, Marta R.; Joan Arinyo, Robert (2017-03-01)
    Article
    Accés restringit per política de l'editorial
    In this work we describe an algorithm to generate tree-decomposable minimally rigid graphs on a given set of vertices V . The main idea is based on the well-known fact that all minimally rigid graphs, also known as Laman ...
  • A Hybrid client-server based technique for navigation in large terrains using mobile devices 

    Noguera, José María; Segura Sánchez, Rafael Jesús; Ogáyar, Carlos; Joan Arinyo, Robert (2010-01)
    Report de recerca
    Accés obert
    We describe a hybrid client-server technique for remote adaptive streaming and rendering of large terrains in resource-limited mobile devices. The technique has been designed to achieve an interactive rendering performance ...
  • A Hybrid Rendering Technique to Navigate in Large Terrains Using Mobile Devices 

    Noguera, José María; Segura, Rafael; Ogáyar, Carlos; Joan Arinyo, Robert (2010-09-08)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We describe a hybrid client-server technique for remote adaptive streaming and rendering of large terrains in resource-limited mobile devices. The technique has been designed to achieve an interactive rendering performance ...
  • Ajuste, optimización y representación del rendimiento de PBIL y CHC aplicados al problema de la selección de la solución deseada 

    Joan Arinyo, Robert; Luzón, M.V.; Yeguas, E. (2007-11)
    Report de recerca
    Accés obert
    La optimización del rendimiento de CHC y PBIL en su aplicación al problema de la selección de la solución deseada dentro de la resolución de restricciones geométricas es fundamental. Se hace necesario ajustar los factores ...
  • Algorismes paral·lels SIMD d'extracció de models de fronteres a partir d'arbres octals no exactes 

    Solé, Jaume; Joan Arinyo, Robert (1994-03)
    Report de recerca
    Accés obert
    A new SIMD parallel algorithm to extract a Boundary representation from Classical Octrees is presented. The algorithm makes use of a Geometrically Deformed Model (GDM) to smooth an initial naive polygonization. The GDM ...
  • Algorithms to mesh 2D CSG polygonal domains from previously meshed CSG primitives 

    Joan Arinyo, Robert; Solé Simó, Marc (1999-04)
    Report de recerca
    Accés obert
    In this work we report on two algorithms that mesh a 2D CSG poligonal domain built from previously meshed primitives. The resulting mesh is computed from the component meshes. Both algorithms first compute the set of ...
  • Algoritmos genéticos en el problema de la solución deseada. Optimización de parámetros 

    Barreiro, E.; Joan Arinyo, Robert; Luzón, M.V. (2004-06)
    Report de recerca
    Accés obert
    En [Luzon01] se demuestra la viabilidad de aplicar un algoritmo genético básico al problema de la búsqueda de la solución deseada en los problemas de resolución de restricciones geométricas. En los experimentos ...
  • A model to measure the performance of evolutionary algorithms applied to solve the root identification problem 

    Joan Arinyo, Robert; Luzón, M.V.; Yeguas, E. (2009-01)
    Report de recerca
    Accés obert
    The existence of a model for representing the performance of metaheuristics applied to solve problems with high computational requirements is paramount to determine the solution quality given a certain avaliable run-time ...
  • A Multi-client architecture for hybrid terrain rendering on mobile devices 

    Noguera, José María; Segura Sánchez, Rafael Jesús; Ogáyar, Carlos; Joan Arinyo, Robert (2010-06)
    Report de recerca
    Accés obert
    Mobile devices such as Personal Digital Assistants (PDAs) or smart phones are rapidly increasing their graphics and networking capabilities. However, real-time rendering of large terrains is still a challenging task to ...
  • An Adaptive algorithm to compute the medial axis transform of 2-D polygonal domains 

    Joan Arinyo, Robert; Pérez Vidal, Lluís; Gargallo Monllau, Elies (1995-10)
    Report de recerca
    Accés obert
    An adaptive algorithm to compute the medial axis transform of 2D polygonal domains with arbitrary genus is presented. The algorithm is based on the refinement of a coarse medial axis transform by subdividing the domain ...
  • A rule-constructive geometric constraint solver 

    Joan Arinyo, Robert; Soto Riera, Antoni (1995-01-01)
    Report de recerca
    Accés obert
    This work reports on the implementation of a two-dimensional, variational geometric constraint solver based on a constructive approach. The solver computes a solution in two phases. First, using rewrite rules, the solver ...
  • A scalable architecture for 3D map navigation on mobile devices 

    Noguera, José María; Segura, Rafael; Ogáyar, Carlos; Joan Arinyo, Robert (2012)
    Article
    Accés restringit per política de l'editorial
    Mobile devices such as smart phones or tablets are rapidly increasing their graphics and networking capabilities. However, real-time visualization of 3D maps is still a challenging task to accomplish on such limited devices. ...
  • A Set of rules for a constructive geometric constraint solver 

    Joan Arinyo, Robert; Soto Riera, Antoni (1995-04)
    Report de recerca
    Accés obert
    This work presents the set of constructive rules used by a two-dimensional, variational geometric constraint solver based on a constructive approach. The main goal in defining the rules has been to keep the set of rules ...
  • Automatic generation of multiresolution boundary representations 

    Andújar Gran, Carlos Antonio; Ayala Vallespí, M. Dolors; Brunet Crosa, Pere; Joan Arinyo, Robert; Solé Bosquet, Jaume (1996-01)
    Report de recerca
    Accés obert
    The paper focuses on automatic simplification algorithms for the generation of a multiresolution family of solid models from an initial boundary representation of a polyhedral solid. An algorithm for general polyhedra ...
  • Back-to-front orderings of triangles in triangulated terrains over regular grids 

    Alonso Alonso, Jesús; Joan Arinyo, Robert (2013)
    Report de recerca
    Accés obert
    In this work we report on a complete and correct set of configurations to realistically rendering triangulated heightfields dedined over regular grids by visiting triangles in a back-to-front order. The experiments conducted ...
  • Basic geometric operations in ruler-and-compass constraint solvers using interval arithmetic 

    Joan Arinyo, Robert; Mata Burgarolas, Nuria (1998-03)
    Report de recerca
    Accés obert
    In this paper we report on a successful application of interval arithmetic to extend the basic geometric operations underlying the ruler-and-compass geometric constraint solving technique to deal with problems where ...