Linear

Changing a variable to create a moving line. When the line moves off the edge of the window, the variable is set to 0, which places the line back at the bottom of the screen.

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let a;
function setup() {
  createCanvas(720, 400);
  stroke(255);
  a = height / 2;
}
function draw() {
  background(51);
  line(0, a, width, a);
  a = a - 0.5;
  if (a < 0) {
    a = height;
  }
}
 
 
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Language Settings

Linear