Thanks to the feedback from my earlier post, I noticed that I was ONLY 
dithering the individual blades of the reeds and not the whole cattail. Just 
before I place each cattail I used a while loop until the product of rand 
and a scaling factor produced a number within a specified range, then used 
another while loop to produce a random tilt factor used to make it look like 
a slight on shore breeze was pushing the reeds. It's given the scene a less 
sterile appearance .... I keep falling into the trap of having everything 
lined up just so. Also .... I thought the "Vee" of Canadian Geese added a 
nice finish to the scene.

Jim

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