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  1. 12-11-2012, 07:30 PM #1
    liulca
    liulca is offline Member
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    Default polygon problem help

    hello
    I would like to draw 4 different polygons each polygon has its own "id" and its points in an arraylist I'm working on this code but I can not draw polygons asking for your help I thank you in advance


    import java.awt.Color;
    import java.awt.Container;
    import java.awt.Graphics;
    import java.awt.Polygon;
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    import java.util.ArrayList;
    import java.util.Collections;
    import java.util.LinkedHashMap;
    import java.util.LinkedHashSet;
    import java.util.List;
    import java.util.Map;
    import java.util.Set;
    import javax.swing.JFrame;
    import javax.swing.JPanel;

    public class Polygons2 extends JPanel {

    @Override
    public void paintComponent(Graphics g) {
    super.paintComponent(g);


    Set<POINTS> POLYGON = new LinkedHashSet<POINTS>();


    //polygon 1 point 3
    POLYGON.add(new POINTS(1, 50, 20));
    POLYGON.add(new POINTS(1, 70, 30));
    POLYGON.add(new POINTS(1, 50, 40));


    //polygon 2 point 4
    POLYGON.add(new POINTS(2, 100, 20));
    POLYGON.add(new POINTS(2, 130, 30));
    POLYGON.add(new POINTS(2, 100, 40));
    POLYGON.add(new POINTS(2, 120, 30));

    //polygon 3 point 6
    POLYGON.add(new POINTS(3, 250, 20));
    POLYGON.add(new POINTS(3, 280, 30));
    POLYGON.add(new POINTS(3, 250, 40));
    POLYGON.add(new POINTS(3, 230, 20));
    POLYGON.add(new POINTS(3, 280, 30));
    POLYGON.add(new POINTS(3, 250, 50));


    //polygon 4 point 12
    POLYGON.add(new POINTS(4, 350, 20));
    POLYGON.add(new POINTS(4, 380, 30));
    POLYGON.add(new POINTS(4, 350, 40));
    POLYGON.add(new POINTS(4, 330, 20));
    POLYGON.add(new POINTS(4, 380, 30));
    POLYGON.add(new POINTS(4, 350, 50));
    POLYGON.add(new POINTS(4, 350, 20));
    POLYGON.add(new POINTS(4, 380, 30));
    POLYGON.add(new POINTS(4, 330, 60));
    POLYGON.add(new POINTS(4, 340, 50));
    POLYGON.add(new POINTS(4, 340, 30));
    POLYGON.add(new POINTS(4, 320, 30));

    Map<Integer,List<POINTS>> PolygonsByID = new LinkedHashMap<Integer,List<POINTS>>();
    for (POINTS n : POLYGON) {
    List PolygonsForID = PolygonsByID.get(n.getID());
    if (PolygonsForID == null) {
    PolygonsForID = new ArrayList<POINTS>();
    PolygonsByID.put(n.getID(), PolygonsForID);
    Collections.sort(PolygonsForID);
    }
    PolygonsForID.add(n);
    }
    for(Map.Entry<Integer,List<POINTS>> count : PolygonsByID.entrySet()) {
    int np = count.getValue().size();
    System.out.println("polygon : " + count.getKey() + " points : " + np);

    int n = 25 ;
    int[] x = new int[n];
    int[] y = new int[n];
    int counter = 0;

    for (POINTS pnt : POLYGON) {
    x[counter] = pnt.getX();
    y[counter++] = pnt.getY();
    }
    Polygon[] polygons = new Polygon[4];
    for (int i = 0; i < polygons.length; i++) {
    polygons[i] = new Polygon();
    polygons[i] = new Polygon(x, y, np);
    g.setColor(Color.RED);
    g.drawPolygon(polygons[i]);
    }
    }
    }



    public class POINTS {

    private int ID;
    private int X;
    private int Y;

    public POINTS(
    int ID, int X, int Y) {
    this.ID = ID;
    this.X = X;
    this.Y = Y;
    }

    public int getX() {
    return X;
    }

    public int getY() {
    return Y;
    }

    public int getID() {
    return ID;
    }
    }

    public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setTitle("Polygons2");
    frame.setSize(550, 550);
    frame.addWindowListener(new WindowAdapter() {

    @Override
    public void windowClosing(WindowEvent e) {
    System.exit(0);
    }
    });
    Container contentPane = frame.getContentPane();
    contentPane.add(new Polygons2());

    frame.show();
    }
    }
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  2. 12-11-2012, 07:31 PM #2
    Sierra
    Sierra is offline AN21XX
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    Default Re: polygon problem help

    "but I can not draw polygons " is a little too short as problem description, what do you expect, what happens exactly (output?)
    Please use the forum code tags around your code.
    I like likes!
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  3. 12-11-2012, 07:38 PM #3
    liulca
    liulca is offline Member
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    Default Re: polygon problem help

    Please use the forum tags around your code code.
    I do not understand
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  4. 12-11-2012, 07:52 PM #4
    liulca
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    Default Re: polygon problem help

    Java Code:

    import java.awt.Color;
    import java.awt.Container;
    import java.awt.Graphics;
    import java.awt.Polygon;
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    import java.util.ArrayList;
    import java.util.Collections;
    import java.util.LinkedHashMap;
    import java.util.LinkedHashSet;
    import java.util.List;
    import java.util.Map;
    import java.util.Set;
    import javax.swing.JFrame;
    import javax.swing.JPanel;

    public class Polygons2 extends JPanel {

    @Override
    public void paintComponent(Graphics g) {
    super.paintComponent(g);


    Set<POINTS> POLYGON = new LinkedHashSet<POINTS>();


    //polygon 1 point 3
    POLYGON.add(new POINTS(1, 50, 20));
    POLYGON.add(new POINTS(1, 70, 30));
    POLYGON.add(new POINTS(1, 50, 40));


    //polygon 2 point 4
    POLYGON.add(new POINTS(2, 100, 20));
    POLYGON.add(new POINTS(2, 130, 30));
    POLYGON.add(new POINTS(2, 100, 40));
    POLYGON.add(new POINTS(2, 120, 30));

    //polygon 3 point 6
    POLYGON.add(new POINTS(3, 250, 20));
    POLYGON.add(new POINTS(3, 280, 30));
    POLYGON.add(new POINTS(3, 250, 40));
    POLYGON.add(new POINTS(3, 230, 20));
    POLYGON.add(new POINTS(3, 280, 30));
    POLYGON.add(new POINTS(3, 250, 50));


    //polygon 4 point 12
    POLYGON.add(new POINTS(4, 350, 20));
    POLYGON.add(new POINTS(4, 380, 30));
    POLYGON.add(new POINTS(4, 350, 40));
    POLYGON.add(new POINTS(4, 330, 20));
    POLYGON.add(new POINTS(4, 380, 30));
    POLYGON.add(new POINTS(4, 350, 50));
    POLYGON.add(new POINTS(4, 350, 20));
    POLYGON.add(new POINTS(4, 380, 30));
    POLYGON.add(new POINTS(4, 330, 60));
    POLYGON.add(new POINTS(4, 340, 50));
    POLYGON.add(new POINTS(4, 340, 30));
    POLYGON.add(new POINTS(4, 320, 30));

    Map<Integer,List<POINTS>> PolygonsByID = new LinkedHashMap<Integer,List<POINTS>>();
    for (POINTS n : POLYGON) {
    List PolygonsForID = PolygonsByID.get(n.getID());
    if (PolygonsForID == null) {
    PolygonsForID = new ArrayList<POINTS>();
    PolygonsByID.put(n.getID(), PolygonsForID);
    Collections.sort(PolygonsForID);
    }
    PolygonsForID.add(n);
    }
    for(Map.Entry<Integer,List<POINTS>> count : PolygonsByID.entrySet()) {
    int np = count.getValue().size();
    System.out.println("polygon : " + count.getKey() + " points : " + np);

    int n = 25 ;
    int[] x = new int[n];
    int[] y = new int[n];
    int counter = 0;

    for (POINTS pnt : POLYGON) {
    x[counter] = pnt.getX();
    y[counter++] = pnt.getY();
    }
    Polygon[] polygons = new Polygon[4];
    for (int i = 0; i < polygons.length; i++) {
    polygons[i] = new Polygon();
    polygons[i] = new Polygon(x, y, np);
    g.setColor(Color.RED);
    g.drawPolygon(polygons[i]);
    }
    }
    }



    public class POINTS {

    private int ID;
    private int X;
    private int Y;

    public POINTS(
    int ID, int X, int Y) {
    this.ID = ID;
    this.X = X;
    this.Y = Y;
    }

    public int getX() {
    return X;
    }

    public int getY() {
    return Y;
    }

    public int getID() {
    return ID;
    }
    }

    public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setTitle("Polygons2");
    frame.setSize(550, 550);
    frame.addWindowListener(new WindowAdapter() {

    @Override
    public void windowClosing(WindowEvent e) {
    System.exit(0);
    }
    });
    Container contentPane = frame.getContentPane();
    contentPane.add(new Polygons2());

    frame.show();
    }
    }
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  5. 12-11-2012, 07:54 PM #5
    liulca
    liulca is offline Member
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    Default Re: polygon problem help

    Java Code: 
    <
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Polygon;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Polygons2 extends JPanel {

@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);


Set<POINTS> POLYGON = new LinkedHashSet<POINTS>();


//polygon 1 point 3
POLYGON.add(new POINTS(1, 50, 20));
POLYGON.add(new POINTS(1, 70, 30));
POLYGON.add(new POINTS(1, 50, 40));


//polygon 2 point 4
POLYGON.add(new POINTS(2, 100, 20));
POLYGON.add(new POINTS(2, 130, 30));
POLYGON.add(new POINTS(2, 100, 40));
POLYGON.add(new POINTS(2, 120, 30));

//polygon 3 point 6
POLYGON.add(new POINTS(3, 250, 20));
POLYGON.add(new POINTS(3, 280, 30));
POLYGON.add(new POINTS(3, 250, 40));
POLYGON.add(new POINTS(3, 230, 20));
POLYGON.add(new POINTS(3, 280, 30));
POLYGON.add(new POINTS(3, 250, 50));


//polygon 4 point 12
POLYGON.add(new POINTS(4, 350, 20));
POLYGON.add(new POINTS(4, 380, 30));
POLYGON.add(new POINTS(4, 350, 40));
POLYGON.add(new POINTS(4, 330, 20));
POLYGON.add(new POINTS(4, 380, 30));
POLYGON.add(new POINTS(4, 350, 50));
POLYGON.add(new POINTS(4, 350, 20));
POLYGON.add(new POINTS(4, 380, 30));
POLYGON.add(new POINTS(4, 330, 60));
POLYGON.add(new POINTS(4, 340, 50));
POLYGON.add(new POINTS(4, 340, 30));
POLYGON.add(new POINTS(4, 320, 30));

Map<Integer,List<POINTS>> PolygonsByID = new LinkedHashMap<Integer,List<POINTS>>();
for (POINTS n : POLYGON) {
List PolygonsForID = PolygonsByID.get(n.getID());
if (PolygonsForID == null) {
PolygonsForID = new ArrayList<POINTS>();
PolygonsByID.put(n.getID(), PolygonsForID);
Collections.sort(PolygonsForID);
}
PolygonsForID.add(n);
}
for(Map.Entry<Integer,List<POINTS>> count : PolygonsByID.entrySet()) {
int np = count.getValue().size();
System.out.println("polygon : " + count.getKey() + " points : " + np);

int n = 25 ;
int[] x = new int[n];
int[] y = new int[n];
int counter = 0;

for (POINTS pnt : POLYGON) {
x[counter] = pnt.getX();
y[counter++] = pnt.getY();
}
Polygon[] polygons = new Polygon[4];
for (int i = 0; i < polygons.length; i++) {
polygons[i] = new Polygon();
polygons[i] = new Polygon(x, y, np);
g.setColor(Color.RED);
g.drawPolygon(polygons[i]);
}
}
}



public class POINTS {

private int ID;
private int X;
private int Y;

public POINTS(
int ID, int X, int Y) {
this.ID = ID;
this.X = X;
this.Y = Y;
}

public int getX() {
return X;
}

public int getY() {
return Y;
}

public int getID() {
return ID;
}
}

public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setTitle("Polygons2");
frame.setSize(550, 550);
frame.addWindowListener(new WindowAdapter() {

@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Container contentPane = frame.getContentPane();
contentPane.add(new Polygons2());

frame.show();
}
} 
>
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  6. 12-11-2012, 09:12 PM #6
    DarrylBurke's Avatar
    DarrylBurke
    DarrylBurke is offline Moderator
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    Default Re: polygon problem help

    Code Conventions for the Java Programming Language: Contents -- especially the part about indenting code.

    db
    Why do they call it rush hour when nothing moves? - Robin Williams
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  7. 12-11-2012, 10:06 PM #7
    liulca
    liulca is offline Member
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    Default Re: polygon problem help

    hello
    excuse me where am I wrong


    Java Code: 
    <
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Polygon;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Polygons2 extends JPanel {

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);


        Set<POINTS> POLYGON = new LinkedHashSet<POINTS>();


//polygon 1 point 3
        POLYGON.add(new POINTS(1, 50, 20));
        POLYGON.add(new POINTS(1, 70, 30));
        POLYGON.add(new POINTS(1, 50, 40));


//polygon 2 point 4
        POLYGON.add(new POINTS(2, 100, 20));
        POLYGON.add(new POINTS(2, 130, 30));
        POLYGON.add(new POINTS(2, 100, 40));
        POLYGON.add(new POINTS(2, 120, 30));

//polygon 3 point 6
        POLYGON.add(new POINTS(3, 250, 20));
        POLYGON.add(new POINTS(3, 280, 30));
        POLYGON.add(new POINTS(3, 250, 40));
        POLYGON.add(new POINTS(3, 230, 20));
        POLYGON.add(new POINTS(3, 280, 30));
        POLYGON.add(new POINTS(3, 250, 50));


//polygon 4 point 12
        POLYGON.add(new POINTS(4, 350, 20));
        POLYGON.add(new POINTS(4, 380, 30));
        POLYGON.add(new POINTS(4, 350, 40));
        POLYGON.add(new POINTS(4, 330, 20));
        POLYGON.add(new POINTS(4, 380, 30));
        POLYGON.add(new POINTS(4, 350, 50));
        POLYGON.add(new POINTS(4, 350, 20));
        POLYGON.add(new POINTS(4, 380, 30));
        POLYGON.add(new POINTS(4, 330, 60));
        POLYGON.add(new POINTS(4, 340, 50));
        POLYGON.add(new POINTS(4, 340, 30));
        POLYGON.add(new POINTS(4, 320, 30));

        Map<Integer, List<POINTS>> PolygonsByID = new LinkedHashMap<Integer, List<POINTS>>();
        for (POINTS n : POLYGON) {
            List PolygonsForID = PolygonsByID.get(n.getID());
            if (PolygonsForID == null) {
                PolygonsForID = new ArrayList<POINTS>();
                PolygonsByID.put(n.getID(), PolygonsForID);
                Collections.sort(PolygonsForID);
            }
            PolygonsForID.add(n);
        }
        for (Map.Entry<Integer, List<POINTS>> count : PolygonsByID.entrySet()) {
            int np = count.getValue().size();
            System.out.println("polygon : " + count.getKey() + " points : " + np);


            int n = 25;
            int[] x = new int[n];
            int[] y = new int[n];
            int counter = 0;

            for (POINTS pnt : POLYGON) {
                x[counter] = pnt.getX();
                y[counter++] = pnt.getY();
            }
            Polygon[] polygons = new Polygon[1];
            for (int i = 0; i < polygons.length; i++) {
                polygons[i] = new Polygon();
                polygons[i] = new Polygon(x, y, np);
                g.setColor(Color.RED);
                g.drawPolygon(polygons[i]);

            }

        }

    }

    public class POINTS {

        private int ID;
        private int X;
        private int Y;

        public POINTS(
                int ID, int X, int Y) {
            this.ID = ID;
            this.X = X;
            this.Y = Y;
        }

        public int getX() {
            return X;
        }

        public int getY() {
            return Y;
        }

        public int getID() {
            return ID;
        }
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setTitle("Polygons2");
        frame.setSize(550, 550);
        frame.addWindowListener(new WindowAdapter() {

            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        Container contentPane = frame.getContentPane();
        contentPane.add(new Polygons2());

        frame.show();
    }
}


>
    Last edited by liulca; 12-11-2012 at 10:12 PM.
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