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/*goals: create methods to
generate a random image
convert an image to grayscale
generate a fractal art
Dominic Matarese
COP3503 */
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
public class main {
public static void main(String[] args) throws IOException {
generateRandom(720, 480);
generateFractal(2000, 10);
convertGrayscale();
System.out.println("Done!");
}
public static void generateFractal(int size, int level) throws IOException
{
BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = image.createGraphics();
Point p1 = new Point(0,0);
Point p2 = new Point(0,size);
Point p3 = new Point(size,0);
Point p4 = new Point(size,size);
drawImage(level, g2d, p1, p2, p3, p4);
g2d.dispose();
ImageIO.write(image, "png", new File("fractalSquare.png"));
}
public static void drawImage(int level, Graphics2D g2d, Point p1, Point p2, Point p3, Point p4)
{
if (level == 1) { //base case, do nothing
return;
}
else {
Point p5 = midpoint(p1, p3);
Point p6 = midpoint(p3, p4);
Point p7 = midpoint(p2, p4);
Point p8 = midpoint(p1, p2);
Point p9 = midpoint(p1, p4);
//generate random colors
int r = (int)(Math.random()*256);
int g = (int)(Math.random()*256);
int b = (int)(Math.random()*256);
Color color = new Color(r, g, b);
g2d.setColor(color);
//g2d.setColor(new Color(p4.x)); // This will set the color to blue, mostly
Polygon square = new Polygon();
square.addPoint(p8.x, p8.y);
square.addPoint(p2.x, p2.y);
square.addPoint(p7.x, p7.y);
square.addPoint(p9.x, p9.y);
Polygon triangle = new Polygon();
triangle.addPoint(p1.x, p1.y);
triangle.addPoint(p9.x, p9.y);
triangle.addPoint(p3.x, p3.y);
//uncomment the square polygon and comment the triangle for a square fractal
//the triangle looks slightly more interesting
//g2d.fillPolygon(square);
g2d.fillPolygon(triangle);
//begin recursion
drawImage(level-1, g2d, p1, p8, p5, p9);
drawImage(level-1, g2d, p8, p2, p9, p7);
drawImage(level-1, g2d, p9, p7, p6, p4);
drawImage(level-1, g2d, p5, p9, p3, p6);
}
}
public static Point midpoint(Point p1, Point p2) {
Point midpoint = new Point((p1.x + p2.x) / 2, (p1.y + p2.y) / 2);
return midpoint;
}
public static void generateRandom(int width, int height)
{
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
//generate random RGB values for each pixel
for(int x = 0; x < width; x++) {
for(int y = 0; y < height; y++) {
int r = (int)(Math.random()*256);
int g = (int)(Math.random()*256);
int b = (int)(Math.random()*256);
Color color = new Color(r, g, b);
image.setRGB(x, y, color.getRGB());
}
}
try {
File random = new File("Random.png");
ImageIO.write(image, "png", random);
}
catch (IOException e){
return; //does nothing if exception occurs
}
}
public static void convertGrayscale() {
File f = new File("input.jpg");
BufferedImage image = null;
try {
image = ImageIO.read(f);
int width = image.getWidth();
int height = image.getHeight();
for(int y = 0; y < height; y++){
for(int x = 0; x < width; x++){
int p = image.getRGB(x,y);
int a = (p>>24)&0xff;
int r = (p>>16)&0xff;
int g = (p>>8)&0xff;
int b = p&0xff;
int avg = (r+g+b)/3;
//setting the value of each RGB to the average
p = (a<<24) | (avg<<16) | (avg<<8) | avg;
image.setRGB(x, y, p);
}
}
}
catch (IOException e) {
e.printStackTrace(); //Eclipse default catch operation
}
try {
File fOutput = new File("output.jpg");
ImageIO.write(image, "jpg", fOutput);
}
catch(IOException e) {
e.printStackTrace();
}
}
}
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