Adding base value to XYAreaRenderer

[belkacsa]

is it possible to add a base for XYAreaRenderer same like in XYBarRenderer

XYBarRenderer barRenderer = new XYBarRenderer();

int base = 100;
barRenderer.setBase(base);

when specifying the base the shading should start from the base line y = base in case of vertical direction
and start from x = base in case of horizontal direction

XYAreaRenderer is using a hard coded value of 0.0 as a base