35 lines
688 B
Plaintext
35 lines
688 B
Plaintext
// The Nature of Code
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// Daniel Shiffman
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// http://natureofcode.com
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int x,y;
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void setup() {
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size(200,200);
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background(0);
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smooth();
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}
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void draw() {
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//create an alpha blended background
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fill(0,1);
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rect(0,0,width,height);
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//calculate a probability between 0 and 100% based on mouseX position
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float prob = (mouseX / (float) width);
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//get a random floating point value between 0 and 1
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float r = random(1);
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//test the random value against the probability and trigger an event
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if (r < prob) {
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noStroke();
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fill(255);
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ellipse(x,y,10,10);
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}
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// X and Y walk through a grid
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x = (x + 10) % width;
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if (x == 0) y = (y + 10) % width;
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}
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