Method isCCW

core/src/processing/opengl/LineStroker.java:233–239

(int x0, int y0, int x1, int y1, int x2, int y2)

  }

  private boolean isCCW(int x0, int y0, int x1, int y1, int x2, int y2) {
    int dx0 = x1 - x0;
    int dy0 = y1 - y0;
    int dx1 = x2 - x1;
    int dy1 = y2 - y1;
    return (long) dx0 * dy1 < (long) dy0 * dx1;
  }

  private boolean side(int x, int y, int x0, int y0, int x1, int y1) {
    long lx = x;