Maneuverable Nurbs Models within a Haptic Virtual Environment
نویسندگان
چکیده
Haptic rendering should not be limited to immobile polygonal models. This paper presents a system that performs Direct Parametric Tracing (DPT) on maneuverable Non-Uniform Rational B-Splines (NURBS) models without the use of an intermediate representation. The system distributes computation between an advanced CAD modeling system and a microprocessor controller for a Sarcos forcere ecting exo-skeleton arm. Methods ranging from model manipulation to simulation of the dynamics of simple assemblies are discussed. Solutions to synchronicity issues that arise in such a distributed system are also described.
منابع مشابه
MANEUVERABLE NURBS MODELS WITHIN A HAPTIC VIRTUAL ENVIRONMENTThomas
Haptic rendering should not be limited to immobile polygonal models. This paper presents a system that performs Direct Parametric Tracing (DPT) on maneuverable Non-Uniform Rational B-Splines (NURBS) models without the use of an intermediate representation. The system distributes computation between an advanced CAD modeling system and a microprocessor controller for a Sarcos force-reeecting exo-...
متن کاملProceedings of Symposium on Haptic Interfaces ASME International ME'99 Congress and Exposition November 14-19, 1999, Nashville, Tennessee DIRECT HAPTIC RENDERING OF COMPLEX TRIMMED NURBS MODELS
The most accurate haptic rendition of a virtual model is produced when the haptic algorithm acts directly on the actual model and not an intermediate representation. In the modeling and design communities the de facto model representation standard is NURBS. Further, more powerful systems provide trimming and adjacency information within the models representation. This additional information per...
متن کاملA novel haptics-based interface and sculpting system for physics-based geometric design
Standard free-form splines such as B-splines and NURBS are widely employed in a wide range of CAD/CAM systems. Conventional geometric modeling and design techniques using these popular splines often requires tedious control-point manipulation and/or painstaking constraint specification (for functional requirements) via unnatural mouse-based computer interfaces. In this paper, we propose a novel...
متن کاملMinimum Distance Queries for Haptic Rendering
Finding the closest points between two modeled objects is a fundamental operation in robotics, computer graphics, and computational geometry. This dissertation is motivated by the use of distance functions in haptic interfaces for virtual prototyping, where distance measures provide the basis for forces that are applied to a human user. The requirements for haptic interfaces mean that these dis...
متن کاملAdvanced Maintenance Simulation by Means of Hand-Based Haptic Interfaces
Aerospace industry has been involved in virtual simulation for design and testing since the birth of virtual reality. Today this industry is showing a growing interest in the development of haptic-based maintenance training applications, which represent the most advanced way to simulate maintenance and repair tasks within a virtual environment by means of a visual-haptic approach. The goal is t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1997