import?java.awt.*;
import?java.applet.*;
import?java.awt.image.*;

class?Point
{
public?int?x;
public?int?y;
public?Point（int?cxint?cy）
{
x=cx;
y=cy;
}
}
public??class?draw?extends?applet?
{
??int?red=Color.blue.getRGB（）;
??int??yymaxyminw=200h=200;
??Image?image1;
??Image?image2;
??int??pixels1[]=new?int[w*h];
??int??pixels2[]=new?int[w*h];
??double?x;
??double?dydx;
??Point?[]p=new?Point[10];
??public?void?init（）
??{
??????for（int?m=0;m??????{
??????????pixels1[m]=Color.black.getRGB（）;
??????}
??????for（int?m=0;m??????{
??????????pixels2[m]=Color.black.getRGB（）;
??????}
??????p[0]=new?Point（2050）;
??????p[1]=new?Point（20100）;
??????p[2]=new?Point（9060）;
??????p[3]=new?Point（16090）;
??????p[4]=new?Point（16040）;
??????p[5]=new?Point（12020）;
??????p[6]=new?Point（7020）;
??????p[7]=p[0];?
???}
?public?Image?boundary（）
???{
????for（int?i=0;i<7;i++）
????{
?????dy=p[i+1].y-p[i].y;?????
?????if（dy!=0）
?????{
???????dx=（p[i+1].x-p[i].x）/dy;
???????if（dy>0）?x=p[i].x;
???????else??x=p[i+1].x;
???????ymax=（Math.max（p[i].yp[i+1].y））;
???????ymin=（Math.min（p[i].yp[i+1].y））;
???????for（y=ymin+1;y<=ymax;y++）
?