Method insertFrame

core/src/processing/core/PApplet.java:4006–4017

Check a string for #### signs to see if the frame number should be inserted. Used for functions like saveFrame() and beginRecord() to replace the # marks with the frame number. If only one # is used, it will be ignored, under the assumption that it's probably not intended to be the frame number.

(String what)

   * intended to be the frame number.
   */
  public String insertFrame(String what) {
    int first = what.indexOf('#');
    int last = what.lastIndexOf('#');

    if ((first != -1) && (last - first > 0)) {
      String prefix = what.substring(0, first);
      int count = last - first + 1;
      String suffix = what.substring(last + 1);
      return prefix + nf(frameCount, count) + suffix;
    }
    return what;  // no change
  }