Checking the point(x,y) whehter it is in the octagonal shape for selecting

Question

hi!
I have drawn the octagonal shapes below by using the paint method
how can i check if the int(x.y) is in the octagonal shape??
can someone help me, please?
thanks in advance
public class [octagonal] extends [RectangularShape] {
     public [octagonal](int x, int y) {
          super(x,y);
          /*     Return whether the point (x,y) is in the octagonal - for selecting it
public boolean contains(int x, int y) {
               If selected, paint 4 handles.
     public void paintShape(Graphics g) {
          g.setColor(Color.black);
     int x1,y1,x2,y2,j,k;
               int n=8;
          for (j=0;j<=n-2;j++) {
               x1=(int) ( ((getLeft()+getRight() ) /2)+getWidth()*Math.cos(j*360/n*3.14159/180));
               y1=(int)( ((getTop()+getBottom() )/2)+getHeight()*Math.sin(j*360/n*3.14159/180));
               for (k=j+1;k<=n-1;k++) {
                    x2=(int) (((getLeft()+getRight())/2)+getWidth()*Math.cos(k*360/n*3.14159/180));
                    y2=(int)(((getTop()+getBottom())/2)+getHeight()*Math.sin(k*360/n*3.14159/180));
                    g.drawLine(x1,y1,x2,y2);

Answer 1

I've done it like this. but, it still doesn't fit into octagonal
shape how can i fix this?
public boolean contains(int x, int y) {
          Polygon poly = polyShape();
          return poly.contains(x,y);
public void paintShape(Graphics g) {
          Polygon poly = polyShape();
          if (filled) {
               g.setColor(getTranspColor());
               g.fillPolygon(poly);
          g.setColor(Color.black);
               int x1,y1,x2,y2,j,k;
               int n=8;
          for (j=0;j<=n-2;j++) {
               x1=(int) ( ((getLeft()+getRight() ) /2)+getWidth()*Math.cos(j*360/n*3.14159/180));
               y1=(int)( ((getTop()+getBottom() )/2)+getHeight()*Math.sin(j*360/n*3.14159/180));
               for (k=j+1;k<=n-1;k++) {
                    x2=(int) (((getLeft()+getRight())/2)+getWidth()*Math.cos(k*360/n*3.14159/180));
                    y2=(int)(((getTop()+getBottom())/2)+getHeight()*Math.sin(k*360/n*3.14159/180));
                    g.drawLine(x1,y1,x2,y2);
     private int hcentre(){ return ( getLeft() + getRight() ) /2;};
     private int hcentre1(){ return ( getLeft() + getRight() ) /4; };
     private int hcentre2(){ return ( hcentre1() * 3 ) ;};
     private int hcentre3(){ return ( getLeft() + getRight()); };
     private int vcentre(){ return ( getTop() + getBottom() ) /2; };
     private int vcentre1(){return ( getTop() + getBottom() ) /4;};
     private int vcentre2(){return ( vcentre1() * 3) ;};
     private int vcentre3(){ return ( getTop() + getBottom() ); };
     private Polygon polyShape() {
          int[] xs = {hcentre(), hcentre2(), hcentre3(), hcentre2(), hcentre(),
                              hcentre1(), getLeft(), hcentre1(), hcentre()};
          int[] ys = {getTop(), vcentre1(), vcentre2(), vcentre3(), getBottom(),
                              vcentre3(), vcentre2(), vcentre1(), getTop()};
          Polygon poly = new Polygon(xs,ys,9);
          return poly;
     }