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The ClayGraphics clay.canvas package consists of 1 Java Interfaces and 1 Java Class which implement the interface. Additionally, 1 Java Main Class is crafted to test the Java Class.
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/*
* ClayCanvasADT.java
*
* Created on June 6, 2006, 2:22 PM
*/
package clay.canvas;
import clay.math.ClayPoint;
import clay.shapes.ClayCircle;
import clay.shapes.ClayRectangle;
import clay.shapes.ClaySquare;
import java.awt.Color;
/**
*
* @author blue
*/
public interface ClayCanvasADT {
public int height();
public int width();
public ClayPoint center();
public void paint(Color c);
public void paint(ClayPoint point, ClayCircle circle, Color color);
public void paint(ClayPoint point, ClaySquare square, Color color);
public void paint(ClayPoint point, ClayRectangle rectangle, Color color);
public void setStrokeSize(int s);
public void draw(ClayPoint point, ClayCircle circle, Color color);
public void draw(ClayPoint point, ClaySquare square, Color color);
public void draw(ClayPoint point, ClayRectangle rectangle, Color color);
public void draw(String s, ClayPoint p, Color c);
}
/*
* ClayCanvas.java
*
* Created on June 5, 2006, 8:05 PM
*/
package clay.canvas;
/**
*
* @author blue
*/
import clay.math.ClayPoint;
import clay.shapes.ClayCircle;
import clay.shapes.ClaySquare;
import clay.shapes.ClayRectangle;
import java.awt.BasicStroke;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
public class ClayCanvas extends Canvas implements ClayCanvasADT
{
BufferedImage image = null;
Graphics2D gir = null;
int xCenter;
int yCenter;
int strokeSize = 1;
public ClayCanvas()
{
super();
}
public int width()
{
return this.getWidth();
}
public int height()
{
return this.getHeight();
}
public ClayPoint center()
{
return new ClayPoint(xCenter,yCenter);
}
public void initializeImage()
{
establishCenterPoint();
establishImage();
paint(Color.white);
}
public void validateImage()
{
establishCenterPoint();
establishImage();
}
private void establishCenterPoint()
{
int w = this.getWidth();
int h = this.getHeight();
xCenter = w / 2;
yCenter = h / 2;
}
private void establishImage()
{
int w = this.getWidth();
int h = this.getHeight();
image = new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB);
gir = image.createGraphics();
}
public void update(Graphics g)
{
paint(g);
}
public void paint(Graphics g)
{
Graphics2D g2 = (Graphics2D)g;
if ( image == null ) { initializeImage(); };
g2.drawImage(image,0,0,this);
}
private void setPaint(Color c)
{
gir.setPaint(c);
}
public void paint(Color c)
{
validateImage();
Point p = new Point(0,0);
Dimension d = new Dimension(this.getWidth(),this.getHeight());
Rectangle r = new Rectangle(p,d);
gir.setPaint(c);
gir.fill(r);
repaint();
}
public void paint(ClayPoint p, ClayCircle circle, Color c)
{
double x = p.x()-circle.radius();
double y = p.y()-circle.radius();
double w = circle.radius()*2;
double h = circle.radius()*2;
gir.setPaint(c);
gir.setStroke(new BasicStroke((int)circle.radius()));
gir.fillOval((int)x,(int)y,(int)w,(int)h);
Graphics pg = getGraphics();
update(pg);
}
public void paint(ClayPoint p, ClaySquare s, Color c)
{
double x = p.x()-(s.side()/2.0);
double y = p.y()-(s.side()/2.0);
double w = s.side();
double h = s.side();
Dimension d = new Dimension((int)s.side(),(int)s.side());
Point pt = new Point((int)x,(int)y);
Rectangle r = new Rectangle(pt,d);
gir.setPaint(c);
gir.setStroke(new BasicStroke(strokeSize));
gir.fill(r);
Graphics pg = getGraphics();
update(pg);
}
public void paint(ClayPoint p, ClayRectangle r, Color c)
{
double x = p.x()-(r.width()/2.0);
double y = p.y()-(r.height()/2.0);
double w = r.width();
double h = r.height();
Dimension d = new Dimension((int)r.width(),(int)r.height());
Point pt = new Point((int)x,(int)y);
Rectangle re = new Rectangle(pt,d);
gir.setPaint(c);
gir.setStroke(new BasicStroke(strokeSize));
gir.fill(re);
Graphics pg = getGraphics();
update(pg);
}
public void setStrokeSize(int s)
{
strokeSize = s;
}
public void draw(ClayPoint p, ClayCircle circle, Color c)
{
double x = p.x()-circle.radius();
double y = p.y()-circle.radius();
double w = circle.radius()*2;
double h = circle.radius()*2;
gir.setStroke(new BasicStroke(strokeSize));
gir.setPaint(c);
gir.drawOval((int)x,(int)y,(int)w,(int)h);
Graphics pg = getGraphics();
update(pg);
}
public void draw(ClayPoint p, ClaySquare square, Color c)
{
double x = p.x()-square.side()/2.0;
double y = p.y()-square.side()/2.0;
double w = square.side()*2;
double h = square.side()*2;
Dimension d = new Dimension((int)square.side(),(int)square.side());
Point pt = new Point((int)x,(int)y);
Rectangle re = new Rectangle(pt,d);
gir.setPaint(c);
gir.setStroke(new BasicStroke(strokeSize));
gir.draw(re);
Graphics pg = getGraphics();
update(pg);
}
public void draw(ClayPoint point, ClayRectangle rectangle, Color color) {
double x = point.x()-(rectangle.width()/2.0);
double y = point.y()-(rectangle.height()/2.0);
double w = rectangle.width();
double h = rectangle.height();
Dimension d = new Dimension((int)rectangle.width(),(int)rectangle.height());
Point pt = new Point((int)x,(int)y);
Rectangle re = new Rectangle(pt,d);
gir.setPaint(color);
gir.setStroke(new BasicStroke(strokeSize));
gir.draw(re);
Graphics pg = getGraphics();
update(pg);
}
public void draw(String s, ClayPoint p, Color c)
{
double x = p.x();
double y = p.y();
FontRenderContext frc = gir.getFontRenderContext();
Rectangle2D bounds = gir.getFont().getStringBounds(s,frc);
double width = (double)bounds.getWidth();
gir.setPaint(c);
gir.drawString(s,(int)(x - (width/2)), (int)y);
Graphics pg = getGraphics();
update(pg);
}
}
/*
* ClayCanvasTest.java
*
* Created on June 6, 2006, 2:33 PM
*/
package testers;
import clay.canvas.ClayCanvas;
import clay.math.ClayPoint;
import clay.shapes.ClayCircle;
import clay.shapes.ClayRectangle;
import clay.shapes.ClaySquare;
import java.awt.Color;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
/**
*
* @author blue
*/
public class ClayCanvasTest {
public ClayCanvasTest() {
}
public static void main(String[] args) {
ClayCanvasTestFrame cc = new ClayCanvasTestFrame("ClayCanvas Test");
cc.setVisible(true);
cc.canvas().initializeImage();
cc.canvas().paint(new ClayPoint(cc.width()/4,cc.height()/4),new ClayCircle(30),Color.red);
cc.canvas().paint(new ClayPoint(cc.width()/4*2,cc.height()/4),new ClaySquare(30),Color.blue);
cc.canvas().paint(new ClayPoint(cc.width()/4*3,cc.height()/4),new ClayRectangle(100,30),Color.cyan);
cc.canvas().setStrokeSize(5);
ClayCircle circle = new ClayCircle(30);
cc.canvas().draw(new ClayPoint(cc.width()/4,cc.height()/4*2),circle,Color.red);
circle.expand(10);
cc.canvas().draw(new ClayPoint(cc.width()/4,cc.height()/4*2),circle,Color.red);
cc.canvas().setStrokeSize(3);
ClaySquare square = new ClaySquare(30);
cc.canvas().draw(new ClayPoint(cc.width()/4*2,cc.height()/4*2),square,Color.blue);
square.shrink(10);
cc.canvas().draw(new ClayPoint(cc.width()/4*2,cc.height()/4*2),square,Color.blue);
cc.canvas().setStrokeSize(1);
ClayPoint cp = new ClayPoint(cc.width()/4*3,cc.height()/4*2);
cc.canvas().draw(cp,new ClayRectangle(100,30),Color.cyan);
cp.moveTo(cp.x()+10,cp.y()+10);
cc.canvas().draw(cp,new ClayRectangle(100,30),Color.cyan);
cc.canvas().draw("THIS IS A TEST!", new ClayPoint(cc.width()/4*2,cc.height()/4*3),Color.black);
}
}
class ClayCanvasTestFrame extends Frame {
private ClayCanvas canvas = new ClayCanvas();
public ClayCanvas canvas()
{
return canvas;
}
public int width() {
return canvas.width();
}
public int height() {
return canvas.height();
}
public ClayCanvasTestFrame(String title)
{
super(title);
setSize(500,500);
setLayout(new GridLayout(1,1));
add(canvas);
addWindowListener(new CloseWindow());
}
class CloseWindow extends WindowAdapter {
public CloseWindow() {
}
public void windowClosing(WindowEvent event) {
System.exit(0);
}
}
}
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