"JRG" wrote: > #declare N = 400; > #declare L = 0.3+1; //max_radius + epsilon Oops, as I said that should be: #declare L = 2*max_radius+ delta; No real harm done here. It's like: #declare L = 2*0.3 + 0.7;// 2*max_radius + epsilon. -- Jonathan.
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