This function is mostly useful for generating the reference-value based pattern analysis plots. It draws a curved line from a start to an end point.
elaborator_draw_curved_line(x1, y1, x2, y2, ...)
No return value; this function is called to draw curved lines of the reference-value based pattern plot.
x-coordinate of the starting point
y-coordinate of the starting point
x-coordinate of the end point
y-coordinate of the end point
further parameters