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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Procedural Natural Phenomena from Least-Cost Paths in a Weighted Graph
verfasst von : Ling Xu, David Mould
Erschienen in: Computer Vision and Computer Graphics. Theory and Applications
Verlag: Springer Berlin Heidelberg
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We present a method for creating geometric models of dendritic forms. Dendritic shapes are commonplace in the natural world; some examples of objects exhibiting dendritic shape include lichens, coral, trees, lightning, rivers, crystals, and venation patterns. Our method first generates a regular lattice with randomly weighted edges, then finds least-cost paths through the lattice. Multiple paths from a single starting location (or generator) are connected into a single dendritic shape. Alternatively, path costs can be used to segment volumes into irregular shapes. The pathfinding process is inexpensive, and allows user control through specification of endpoint placement, distribution of generators, and arrangement of nodes in the graph.