Method beginContour

core/src/processing/core/PShape.java:628–645

@webref shape:vertex @brief Starts a new contour @see PShape#endContour()

()

   * @see PShape#endContour()
   */
  public void beginContour() {
    if (!openShape) {
      PGraphics.showWarning(OUTSIDE_BEGIN_END_ERROR, "beginContour()");
      return;
    }

    if (family == GROUP) {
      PGraphics.showWarning("Cannot begin contour in GROUP shapes");
      return;
    }

    if (openContour) {
      PGraphics.showWarning("Already called beginContour().");
      return;
    }
    openContour = true;
    beginContourImpl();
  }


  protected void beginContourImpl() {