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Topic: Random element from an array? (Read 533 times) |
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Phiil
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Random element from an array?
« on: Feb 23rd, 2005, 4:48am » |
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Hi folks,
Quite simply, how do you go about extracting a random element from an array?
I've set up an array,
int [] majorscale = {0,2,4,5,7,9,11,12};
and I'd like to be able to have an event which acts using mouseY plus a random value from the array majorscale.
My guess for the syntax was:
midiOut.setNoteOn(9,mouseY+random(majorscale),mouseX);
but I get this error message:
"Semantic Error: No applicable overload for the method named "random" was found in type "BApplet". Perhaps you wanted the overloaded version "float random(float $1);" instead?"
I'm putting this here as I'm pretty sure this is likely to be a basic syntactical error....
As you might have gathered, I'm playing around with the ProMIDI libraries.
Thanks,
Phil
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eskimoblood
 
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Re: Random element from an array?
« Reply #1 on: Feb 23rd, 2005, 10:14am » |
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Try this:
Code:
int [] majorscale = {0,2,4,5,7,9,11,12};
int mj=int(random(majorscale.length));
midiOut.setNoteOn(9,mouseY+majorscale[mj],mouseX);
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Phiil
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Re: Random element from an array?
« Reply #2 on: Feb 23rd, 2005, 1:47pm » |
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Thank you Eskimoblood 
I'll give that a try when I've finished my current experiment (I've just got the video libraries working - quite fun).
Phil
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