do{do{draw_point_color(x,y,x*x*cos(degtorad(x+y))*y*y*sin(degtorad(x+y)));x+=1}until x>90;y+=1;x=0}until y>90;x=0
do{do{draw_point_color(x,y,x*x*cos(degtorad(x+y))+y*y*sin(degtorad(x+y)));x+=1}until x>90;y+=1;x=0}until y>180