Abstract
A system to generate pictures of plants requires a model for plant growth, that includes size and shape influences, and a renderer to produce images from the model output. The model of this two step process is examined, from a basis in botanical research. An enhancement of graph grammars to three dimensions is presented for the model of plant growth. A discussion of the use of these grammars to model plant growth examines the three botanical elements of phyllotaxis, branch orientation, and phototropism. Prototype rules are given for the first two of these elements, and a technique is discussed for the last.CR Categories and Subject Descriptors: F.4.2 [Mathematical Logic and Formal Languages]: Grammars and Other Rewriting Systems - Parallel rewriting systems; I.3.5 /Computer Graphics]: Computational Geometry and Object Modeling.
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