@Override
  public int hashCode() {
    return ID.hashCode() + (int) (radius * 1000) + (int) (angle * 10) + center.hashCode();
  }
@param radius from 0.0 to 1.0, default 0.5
@param angle  minimum 0.0, default 1.0
@param center default (0.5, 0.5)
transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/SwirlFilterTransformation.java