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I want to create a ring of random width made of randomly spaced particles.
What I get is random particles within a square boundary. I've stared at
this for 45 minutes now. Where am I screwing up?
looprun, ringminrad1, ringwidth1, seed1-4, and deftex are all previously
declared.
#while (looprun < 4000)
#declare x1 = (ringminrad1 + (ringwidth1 * rand(seed1))) *
cos(radians(90*rand(seed2)));
#declare z1 = (ringminrad1 + (ringwidth1 * rand(seed1))) *
sin(radians(90*rand(seed2)));
#declare posnegx = rand(seed4);
#if (posnegx < 0.5)
#declare posnegx = -1;
#else
#declare posnegx = 1;
#end
#declare posnegz = rand(seed4);
#if (posnegz < 0.5)
#declare posnegz = -1;
#else
#declare posnegz = 1;
#end
sphere {
<0,0,0>,1
rotate <90*rand(seed3),90*rand(seed3),90*rand(seed3)>
scale <rand(seed3),rand(seed3),rand(seed3)>
translate <posnegx * x1,rand(seed3),posnegz * z1>
texture {deftex}
}
#declare looprun = looprun + 1;
#end
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