Method pointerup

script.js:1070–1073

(e)

    let base_x = 0;
    let base_y = 0;
    let pointerup = function(e) {
      dragging = false;
      e.preventDefault();
    }
    let get_ratio = (function(elem) {
      let c_ratio = elem.clientWidth / elem.clientHeight;
      let target_ratio = this.width / this.height;