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Thread: Java Graphics: Drawing one object into another

  1. #1
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    Default Java Graphics: Drawing one object into another

    I'm a beginner in java programming and I would appreciate if someone can guide me as to how I've to proceed to obtain the wanted solution I am looking for. Ive attached screenshots of the outputs that I obtain from running the code. the threebythree.java code creates a 3x3 square grid and the rhombus.java creates a rhombus. What I'm trying to attain is to take the whole rhombus drawing and paste it into each square present in the grid. I have attached an image showing the required rough output that Im looking for. I will be really greatful if someone could guide me in the right direction.

    result expected.JPG

    threebythree.JPG

    rhombus.JPG





    threebythree.java

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
     
    public class threebythree extends JPanel {
     
    	int s = 150;
     
    	public threebythree(){
     
    		setPreferredSize(new Dimension(450, 450));
    		setBackground(Color.WHITE);
     
    	}
     
    	public void paintComponent(Graphics g){
    		super.paintComponent(g);
    		Graphics2D g2d=(Graphics2D)g;
    		g2d.translate(60, 50);
     
     
    		this.setBackground(Color.WHITE);
     
    		for(int x=0; x<3; x++ ){
    			for(int y=0; y<3; y++){
    				g2d.drawRect(x*s, y*s, s, s);
     
    			}			
    		}		
    	}	
    }


    rhombus.java

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
     
    	public class rhombus extends JPanel {
     
    		public rhombus(){
    			JPanel jp2 = new JPanel();
    			setPreferredSize(new Dimension(450, 450));
    			setBackground(Color.WHITE);
     
    		}
     
     
     
    		public void paintComponent(Graphics g){
    			super.paintComponent(g);
     
     
    			Graphics2D g2d=(Graphics2D)g;
    			int s = 100;
     
    			this.setBackground(Color.WHITE);
    			g2d.translate(275, 75);
    			g2d.rotate(Math.toRadians(45));
    			for(int x=0; x<3; x++ ){
    				for(int y=0; y<3; y++){
    					g2d.drawRect(x*s, y*s, s, s);	
     
    				}			
    			}		
    		}	
    	}



    testing.java

    import java.awt.*;
     
    import javax.swing.*;
     
    public class zaax {
    	public static void main(String[] args){
     
    		JFrame f = new JFrame("Testing");
    		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     
     
    		f.getContentPane().add(new rhombus());
    		f.setSize(600, 600);
    		f.setVisible(true);
     
     
     
     
    	}
    }


  2. #2
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    Default Re: Java Graphics: Drawing one object into another

    Well, how would you do this by hand? Get a piece of graph paper, and do the drawing, keeping track of the coordinates where you're drawing. Do you see a pattern?
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  3. The Following User Says Thank You to KevinWorkman For This Useful Post:

    zaxahmed (August 19th, 2011)

  4. #3
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    Default Re: Java Graphics: Drawing one object into another

    I can manually draw the rhombus into the 3x3 square grid, that is definitely one solution but what I want do is to call the drawing of rhombus into the 3x3 square grid that I have created in another class. I hope you get what I mean.

  5. #4
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Java Graphics: Drawing one object into another

    Quote Originally Posted by zaxahmed View Post
    I can manually draw the rhombus into the 3x3 square grid, that is definitely one solution but what I want do is to call the drawing of rhombus into the 3x3 square grid that I have created in another class. I hope you get what I mean.
    Hmm, I'm not sure. What I'd do if I were you is create a method that draws a single square/rhombus at a specified coordinate, something like:

    public void drawSquare(int x, int y, Graphics){
    //draw a single square with a rhombus inside it
    }

    Then just call that with whatever x and y value you want, in your loop. You could also add parameters for the width and height of the square.
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  6. #5
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    Default Re: Java Graphics: Drawing one object into another

    Thank you very much!

  7. #6
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Java Graphics: Drawing one object into another

    Quote Originally Posted by zaxahmed View Post
    Thank you very much!
    No problem. Did you get it sorted out then?
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