How to draw a star in p5.js?

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by dana , in category: Javascript , 19 days ago

How to draw a star in p5.js?

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1 answer

by filiberto , 18 days ago

@dana 

Here is an example of how you can draw a star in p5.js:

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function setup() {
  createCanvas(400, 400);
}

function draw() {
  background(220);

  translate(width / 2, height / 2);

  noFill();
  stroke(0);
  strokeWeight(2);

  // Number of points in the star
  let numPoints = 5;
  // Size of the star
  let outerRadius = 100;
  let innerRadius = 50;

  // Calculate angle between two points
  let angle = TWO_PI / numPoints;

  beginShape();
  for (let i = 0; i < TWO_PI; i += angle) {
    let x1 = cos(i) * outerRadius;
    let y1 = sin(i) * outerRadius;
    let x2 = cos(i + angle / 2) * innerRadius;
    let y2 = sin(i + angle / 2) * innerRadius;
    vertex(x1, y1);
    vertex(x2, y2);
  }
  endShape(CLOSE);
}


This code will create a canvas and draw a 5-pointed star in the center. You can adjust the numPoints, outerRadius, and innerRadius variables to change the appearance of the star.