I want to thank Paul, Peter, Dunbar, Jacques and Scott for helping me with this problem. I now have enough to keep me out of your hair for months!!
Thanks and cheers, Roger On Mar 3, 2013, at 7:27 PM, Paul D. DeRocco <pdero...@ix.netcom.com> wrote: >> From: Roger Guay >> >> Thanks, Scott. I'm not sure I follow what you're saying, so >> let me expand on what I'm trying to do: I want a number (25 >> to 200) of objects randomly positioned on the stack/window >> but favoring the center of the stack/window. Would your >> described method do this for me? Sorry for being slow... > > You need to devise a simple mathematical function that translates the range > of the basic random number generator into the appropriate range, with a > curve that has a greater slope at the extremes than in the middle. > > First, generate a random number with a reasonably big range, subtract the > midpoint of the range to get a bipolar value, and then compute a third-order > polynomial. The zeroth-order coefficient should be the middle pixel value of > the screen, the second-order coefficient should be zero to make it > symmetric, the first-order should be small enough that by itself you'd get a > range that covers only a small portion of the screen, then the third-order > should be sufficient to cover the full width of the screen. You can fiddle > the first- and third-order coefficients to adjust the weighting. > > -- > > Ciao, Paul D. DeRocco > Paul mailto:pdero...@ix.netcom.com > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
