Computational Steering is the ultimate goal of interactive simulation: researchers change parameters of their simulation and immediately receive feedback on the effect. We present a general and flexible graphics tool that is part of an environment for Computational Steering developed at CWI. It enables the researcher to interactively develop his own interface with the simulation. This interface...

This paper describes a simple low-cost 2D and 3D positioning system for mobile robots. The system makes use of both ultrasound and radio frequency signals to achieve positional accuracies better than 1% of the tracked volume. Furthermore, we have integrated the positioning system into the simulation tools Player/Stage, in order to combine simulated robots with real robots in a ‘hybrid’ embodied...

As the modeling of the architectural system is difficult and inaccurate, the 3D modeling of the light in the architectural system is studied by using Java3D technology. Using java3D perspective projection technique, the observation coordinate system is determined, and real-time viewpoint setting as well as roaming processing is realized. Through multiple view technique, we can observe the movem...

We present a technique for rendering animated 3D models in a Su-Muk painting style with user’s guide. First, a user can sketch directly over 3D models by varying ink and water values. And we simulate the behavior of ink-water directly on 3D model for consistent shade information over 3D models. After simulation, ink and water are spread over a 3D surface appropriately. Second, to achieve a real...

This paper presents the application of injection molding of wedge-shaped plates for lightguiding application. This paper discusses the influence of processing parameters on injection molding. The filling stages of lightguide plate for mold flow simulation (3D, midplane) are analyzed. The numerical simulation of mold filling process is based on the concept of control volume finite element method...