from java.awt import Color
from jhplot import *

c1 = HPlot3D('Canvas',600,600)
c1.setNameX('X')
c1.setNameY('Y')
c1.setContour()
c1.visible()
c1.setAutoRange()
f1=F2D('(0.5*x)^2+y^2', -2.0, 2.0, -2.0, 2.0)
c1.draw(f1)