js/util.js


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if (window.$) {
  $.fn.int = function(){ return parseInt($(this).val(),10) }
  $.fn.float = function(){ return parseFloat($(this).val()) }
}

function clamp(n,a,b){ return n<a?a:n<b?n:b }

function loadImage(imageURL, callback) {
  var imageURL = proxify( imageURL );

  window.gif = window.img = null

  if (imageURL.substr(-3) === "gif") {
    window.gif = GIF(imageURL);
    // gif.on("error", tryToLoadNextImage);
    // gif.on("rendered", trackLoadTime);
    gif.on("rendered", callback);
    return gif.render();
  } else {
    window.img = new Image();
    // img.addEventListener("error", tryToLoadNextImage);
    img.addEventListener("load", callback);
    img.crossOrigin = "anonymous";
    return img.src = imageURL;
  }
}

function giveImage() {
  if (window.gif) {
    return gif.frames[gif.currentFrame()].ctx.canvas;
  } else {
    return img;
  }
}

function proxify (url) {
  if (url.indexOf("http") == 0)
    return "/cgi-bin/proxy?" + url // .replace(/^https?:\/\//, "");
  else
    return url
};