Implementation of an Efficient Constraint Solver for the Layout of Graphs in Delaunay
Delaunay  is a visualization system to display and query object-oriented databases. It supports DOODLE , a visual and declarative meta-language, with which users can specify the display of quantitative information (such as bar charts and pie charts) and of qualitative information (such as graphs). The visual vocabulary available to the user comprises only simple visual primitives such as box, circle, and line. It also supports constraints as a means of specifying distances between objects (length constraints) and occlusion between objects (overlap constraints).
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