# Show how to visualise a 2D function using Python code
# @author Sergei Chekanov 

from jhplot import F2D,HJavaView
from java.awt import Color

f1 = F2D("3*(x*x+y*y)", -1.0, 1.0, -1.0, 1.0)

c1= HJavaView()

obj1=c1.add(f1)
obj1.setTransparency(0.2);
obj1.showTransparency(True);


f2 = F2D("(x+y)", -1.0, 1.0, -1.0, 1.0)
obj2=c1.add(f2)

# draw 2 functions 
c1.draw([obj1,obj2])

view=c1.getView()
disp=view.getDisplay()
disp.showAxes(True)

c1.visible()