using MessagingToolkit.QRCode.Geom; namespace MessagingToolkit.QRCode.Codec.Util; public interface DebugCanvas { void println(string str); void drawPoint(Point point, int color); void drawCross(Point point, int color); void drawPoints(Point[] points, int color); void drawLine(Line line, int color); void drawLines(Line[] lines, int color); void drawPolygon(Point[] points, int color); void drawMatrix(bool[][] matrix); }