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function setup() { createCanvas(300, 300);}function draw() { background("white"); if (mouseX < 100) { fill("red"); rect(0, 0, 100, height); fill("white"); rect(100, 0, 100, height); fill("white"); rect(100, 0, 100, height); } else if (mouseX < 200) { fill("white"); rect(0, 0, 100, height); fill("red"); rect(100, 0, 100, height); fill("white"); rect(200, 0, 100, height); } else if (mouseX < 300) { fill("white"); rect(0, 0, 100, height); fill("white"); rect(100, 0, 100, height); fill("red"); rect(200, 0, 100, height); }}