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processing4/java/examples/Basics/Math/RandomGaussian/RandomGaussian.pde
2013-03-06 16:52:08 -05:00

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/**
* Random Gaussian.
*
* This sketch draws ellipses with x and y locations tied to a gaussian distribution of random numbers.
*/
void setup() {
size(640, 360);
background(0);
}
void draw() {
// Get a gaussian random number w/ mean of 0 and standard deviation of 1.0
float val = randomGaussian();
float sd = 60; // Define a standard deviation
float mean = width/2; // Define a mean value (middle of the screen along the x-axis)
float x = ( val * sd ) + mean; // Scale the gaussian random number by standard deviation and mean
noStroke();
fill(255, 10);
noStroke();
ellipse(x, height/2, 32, 32); // Draw an ellipse at our "normal" random location
}