diagonale

def newLine(pic,x,y,c):
 #@param pic: picture
 #@param x , y: int
 #@param c: color
 axisX=x
 axisY=y
 if x>=getWidth(pic)-1 or x<0 or y>=getHeight(pic)-1 or y<0:
  print 'parameter error'
  return
 for param in range(x,getWidth(pic)):
  if axisX!=getWidth(pic)-1 and axisY!=getHeight(pic)-1:
   px=getPixel(pic,axisX,axisY)
   setColor(px,c)
   axisX+=1
   axisY+=1
  elif axisX==getWidth(pic)-1 or axisY==getHeight(pic)-1:
   show(pic)