Interactive Geometric Modeling System Based on Practical Engineering Drawing

Interactive 2D Constraint-Based Geometric Construction System

This paper presents a 2D Constraint-Based Geometric Construction System where positioning and manipulating geometry is very precise. An unusually simple interface makes this system particularly interactive and easy to use. In our approach, the geometry types supported are: points, lines, circles, ellipses, circular arcs and b-spline curves. All the fundamental topologic constraints, i.e. tangen...

Engineering Drawing Based Database Rendering

Geometric Modeling for Engineering Applications

A geometric model of an object – in most cases being a subset of the three dimensional space – can be used to better understand the object’s structure or behavior. Therefore data such as the geometry, the topology and other application specific data have to be represented by the model. With the help of a computer it is possible to manipulate, process or display these data. We will discuss diffe...

An Interactive System for Drawing Graphs

In spite of great advances in the automatic drawing of medium and large graphs, the tools available for drawing small graphs exquisitely (that is, with the aesthetics commonly found in professional publications and presentations) are still very primitive. Commercial tools, e.g., Claris Draw, provide minimal support for aesthetic graph layout. At the other extreme, research prototypes based on c...

Subdivision Surface-Based Geometric Modeling System