1.gif

/**
* @description: 心形
* @param {number} ax 宽度
* @param {number} ay 高度
* @param {number} len 点数量
*/
function love(ax: number, ay: number, len: number) {
    len = len < 80 ? 80 : len
    const arr = []
    for (let i = 0; i < len; i++) {
      const step = (i / len) * (Math.PI * 2) //递增的θ
      const vector = {
        x: ax * (18 * Math.pow(Math.sin(step), 3)),
        y:
          -ay *
          (13 * Math.cos(step) -
            5 * Math.cos(2 * step) -
            2 * Math.cos(3 * step) -
            Math.cos(4 * step))
      }
      arr.push(vector)
    }
    return arr
}

调用

love(width / 36, (height + height * 0.22) / 36, width * 20)