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--- simulating_photosynthesis [2008-10-06 09:49] – davegriffiths
+++ simulating_photosynthesis [2008-10-06 09:54] – davegriffiths
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+Plants are given a "fitness" based on their leaves -
+* How much do they face the light?
+* Are they too close to other leaves?
+* Are they in shadow from another leaf?
+* Are they below the ground?
+* Also - the fitness drops as the plant description (a linenmayer system string) gets too long.
+Using this measurement, a genetic algorithm can create populations of individual plants, score each one and iteratively create new populations by combining fit individuals.
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+Each frame is the fittest of a new population - the simplest strategy is to "cheat" :)
 {{http://www.pawfal.org/dave/images/patab-long.png}}
+The result of a long run with many thousands of generations.
 {{http://www.pawfal.org/dave/images/patab-helped.png}}
+You can also evolve from a starting point - in this case a simple tree is modified to create a bigger and more suitable one for the environment.