from java.awt import* 
from jhplot  import * 
from jhplot.math.exp4j import *
from jhplot.math.exp4j.function import * 


class cf2d(Function):
  def  apply(self,val):
    if (val[0]<50 or val[1]<50):  
                return val[1]*val[0] 
    if (val[0]>=50 and val[1]>=50): 
                return  val[0]*val[0]+val[1]*val[1] 

e=ExpressionBuilder("cf2d(x,y)")
func=cf2d("cf2d",2);
e.function(func)
e.variables("x")
e.variables("y")
fff=e.build()
#fff.setVariable("x", 10);
#print fff.evaluate()

c1 = HPlot3D()
c1.visible(1)
c1.setAutoRange()
f=F2D(e.build(), 0,200, 0,200)
c1.draw(f)