emotion ret mouse

let sizeSlider;

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function setup() {

  createCanvas(windowWidth, windowHeight);

  sizeSlider = createSlider(0,200,100);

  sizeSlider.position(width/2-200, windowHeight*7/8);

  sizeSlider.style ("width","400px");

}

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function draw() {

  background(255);

  fill(0);

  noStroke();

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//let r ;

    //r = map(mouseX, 0, width, 0, 200, true);

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  rectMode(CENTER);

  rect(width / 2, height / 2, 400, 400, sizeSlider.value() );

}

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