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| public class FloodFill {
public static final int SLOW = 10; // utilisé pour ralentir le remplissage, pour le voir progresser
public static final Color FILL_COLOR = Color.RED;
public static void main(String[] args) {
FloodFill test = new FloodFill();
AbsractShape testShape1 = new ShapeTest1();
AbsractShape testShape2 = new ShapeTest2();
AbsractShape testShape3 = new ShapeTest3();
AbsractShape testShape4 = new ShapeTest4();
AbsractShape[] shapes = { testShape1, testShape2, testShape3, testShape4 };
JFrame frame = new JFrame("Démo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BorderLayout());
JPanel panel = new JPanel() {
protected void paintComponent(java.awt.Graphics g) {
super.paintComponent(g);
testShape1.draw(g.create(10,10, testShape1.getWidth(), testShape1.getHeight()));
testShape2.draw(g.create(120,10, testShape2.getWidth(), testShape2.getHeight()));
testShape3.draw(g.create(10,120, testShape3.getWidth(), testShape3.getHeight()));
testShape4.draw(g.create(120,120, testShape4.getWidth(), testShape4.getHeight()));
}
};
mainPanel.add( panel, BorderLayout.CENTER);
JPanel buttonPanel = new JPanel();
JCheckBox speed = new JCheckBox("Ralentir");
speed.addChangeListener((e)-> test.setSpeed( speed.isSelected()?SLOW:0 ));
JButton buttonFillIn = new JButton("Remplir (in)");
JButton buttonFillOut = new JButton("Remplir (out)");
buttonPanel.add( speed );
buttonPanel.add( buttonFillIn );
buttonPanel.add( buttonFillOut );
mainPanel.add( buttonPanel, BorderLayout.SOUTH);
buttonFillIn.addActionListener( e -> fill(test, shapes, buttonFillIn, buttonFillOut, panel, true) );
buttonFillOut.addActionListener( e -> fill(test, shapes, buttonFillIn, buttonFillOut, panel, false) );
frame.getContentPane().add(mainPanel);
frame.setSize(400, 300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void fill(FloodFill floodFill, AbsractShape[] shapes, JButton buttonFillIn,
JButton buttonFillOut, Component panel, boolean paintIn) {
buttonFillIn.setEnabled(false);
buttonFillOut.setEnabled(false);
new Thread() {
@Override
public void run() {
for(AbsractShape shape : shapes) {
shape.clear();
}
panel.repaint();
for(AbsractShape shape : shapes) {
floodFill.fill( panel, shape.getGrid(), paintIn?shape.getInPoint():shape.getOutPoint(), FILL_COLOR);
}
SwingUtilities.invokeLater(() -> { buttonFillIn.setEnabled(true); buttonFillOut.setEnabled(true); });
}
}.start();
}
private long speed;
public void setSpeed(long speed) {
this.speed=speed;
}
public void fill(Component component, int[][] grid, Point fillPoint, Color fill) {
final int startx = fillPoint.x;
final int starty = fillPoint.y;
final int height = grid.length;
final int width;
int maxwidth = 0;
for (int y = 0; y < height; y++) {
int currentWidth = grid[y].length;
if (currentWidth > maxwidth) {
maxwidth = currentWidth;
}
}
width = maxwidth;
final int originalColor = grid[starty][startx];
final int fillColor = fill.getRGB();
int minx=width;
int maxx=0;
int miny=height;
int maxy=0;
for(int x=0; x<width; x++) {
for( int y=0; y<height; y++) {
if ( grid[y][x]!=originalColor ) {
if ( x<minx) minx=x;
if ( x>maxx) maxx=x;
if ( y<miny) miny=y;
if ( y>maxy) maxy=y;
}
}
}
if ( minx==maxx ) {
// cas particulier : ligne verticale
if ( startx==minx ) {
// draw in
for(int y=miny; y<=maxy; y++) {
fill(component, grid, startx, y, fillColor);
}
}
else {
// draw out
for(int y=0; y<height; y++) {
for(int x=0; x<width; x++) {
if ( x!=minx || y<miny || y>maxy ) {
fill(component, grid, x, y, fillColor);
}
}
}
}
}
else if ( miny==maxy ) {
// cas particulier : ligne horizontal
if ( starty==miny ) {
// draw in
for(int x=minx; x<=maxx; x++) {
fill(component, grid, x, starty, fillColor);
}
}
else {
// draw out
for(int y=0; y<height; y++) {
for(int x=0; x<width; x++) {
if ( y!=miny || x<minx || x>maxx ) {
fill(component, grid, x, y, fillColor);
}
}
}
}
}
else {
// + 2 pour ajouter des bordures afin de simuler un rectangle autour (pour le remplissage à l'extérieur de la forme)
int[][] nbgrid = new int[height+2][width+2];
for(int y=0; y<nbgrid.length; y++) {
for(int x=0; x<nbgrid[y].length; x++) {
if ( x==0 || y==0 || x==nbgrid[y].length-1 || y==nbgrid.length-1 ) {
nbgrid[y][x]=1;
}
else if ( x>0 && x-1<width && y>0 && y-1<height ) {
if ( grid[y-1][x-1]!=originalColor ) { // on copie les points de la bordure
nbgrid[y][x]=1;
}
}
}
}
Point p = new Point(startx+1, starty+1);
int color = -1;
while (color < 0)
{
if ( checkBounds(p.x,p.y,nbgrid) ) {
nbgrid[p.y][p.x] = color--;
}
if (!search(nbgrid, p, 0))
{
if ( checkBounds(p.x, p.y, nbgrid) ) {
nbgrid[p.y][p.x] = 1;
if ( nbgrid[p.y][p.x]==1 ) {
fill(component, nbgrid, grid, p, fillColor);
}
}
color += 2;
search(nbgrid, p, color);
}
}
}
}
private void fill(Component component, int[][] nbgrid, int[][] grid, Point p, int fillColor) {
if ( nbgrid[p.y][p.x]==1 ) {
fill(component, grid, p.x-1, p.y-1, fillColor);
}
}
private boolean search(int[][] nbgrid, Point p, int color) {
if ( checkBounds(p.x-1, p.y, nbgrid) ) {
if (nbgrid[p.y][p.x-1] == color) {
p.x--;
return true;
}
}
else {
return false;
}
if ( checkBounds(p.x+1, p.y, nbgrid) ) {
if (nbgrid[p.y][p.x+1] == color) {
p.x++;
return true;
}
}
else {
return false;
}
if ( checkBounds(p.x, p.y-1, nbgrid) ) {
if (nbgrid[p.y-1][p.x] == color) {
p.y--;
return true;
}
}
else {
return false;
}
if ( checkBounds(p.x, p.y+1, nbgrid) ) {
if (nbgrid[p.y+1][p.x] == color) {
p.y++;
return true;
}
}
else {
return false;
}
return false;
}
private boolean checkBounds(int x, int y, int[][] grid) {
return checkBounds(y, 0, grid.length) && checkBounds(x, 0, grid[y].length);
}
private boolean checkBoundsIncluded(int x, int min, int max) {
return x>=min && x<=max;
}
private boolean checkBounds(int x, int min, int max) {
return x>=min && x<max;
}
private void fill(Component component, int[][] grid, int x, int y, int fillColor) {
grid[y][x]=fillColor;
component.repaint();
slowDown();
}
private void slowDown() {
if ( speed>0 ) {
try {
Thread.sleep(speed);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
private static abstract class AbsractShape {
private final static int BORDER_COLOR = Color.BLACK.getRGB(); // La couleur de bordure
private final int width;
private final int height;
private final int[][] grid;
private final int[][] clearGrid;
public AbsractShape() {
grid = createGrid();
height = grid.length;
clearGrid = new int[height][];
int maxwidth = 0;
for (int y = 0; y < height; y++) {
int currentWidth = grid[y].length;
clearGrid[y] = Arrays.copyOf(grid[y], currentWidth);
if (currentWidth > maxwidth) {
maxwidth = currentWidth;
}
}
width = maxwidth;
}
public final int[][] getGrid() {
return grid;
}
/**
* Le point de départ du remplissage à l'intérieur de la forme
* @return
*/
public abstract Point getInPoint();
/**
* Le point de départ du remplissage à l'extérieur de la forme
* @return
*/
public abstract Point getOutPoint();
public void clear() {
for (int y = 0; y < height; y++) {
for( int x=0; x<width; x++) {
grid[y][x]=clearGrid[y][x];
}
}
}
public final int getWidth() {
return width;
}
public final int getHeight() {
return height;
}
public Dimension getSize() {
return new Dimension(width, height);
}
protected int[][] createGrid() {
BufferedImage image = createImage();
return grabArray(image);
}
private int[][] grabArray(BufferedImage image) {
final int[][] array = new int[image.getHeight()][image.getWidth()];
for(int y=0; y<array.length; y++) {
for(int x=0; x<array[y].length; x++) {
int pixel = image.getRGB(x, y);
array[y][x] = pixel<0?BORDER_COLOR:0;
}
}
return array;
}
/*Doit être une image ARGB, ou les lignes sont en Color.WHITE */
protected abstract BufferedImage createImage();
public final void draw(Graphics graphics) {
final BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
final int[] pixels = ((DataBufferInt) image.getRaster().getDataBuffer())
.getData();
for (int y = 0; y < grid.length; y++) {
for (int x = 0; x < grid[y].length; x++) {
pixels[y * width + x] = grid[y][x];
}
}
graphics.drawImage(image, 0, 0, null);
}
}
public static class ShapeTest1 extends AbsractShape {
@Override
protected BufferedImage createImage() {
BufferedImage image = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
Graphics graphics = image.createGraphics();
try {
graphics.setColor(Color.WHITE);
final int[] px = new int[]{20, 30, 40, 50, 60, 60, 50, 60, 50, 40, 30, 20, 10,};
final int[] py = new int[]{10, 10, 20, 10, 20, 30, 40, 50, 60, 60, 50, 99, 99};
graphics.drawPolygon(
px,
py,
px.length);
return image;
}
finally {
graphics.dispose();
}
}
@Override
public Point getInPoint() {
return new Point(50,50);
}
@Override
public Point getOutPoint() {
return new Point(5,5);
}
}
public static class ShapeTest2 extends AbsractShape {
@Override
protected BufferedImage createImage() {
BufferedImage image = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
Graphics graphics = image.createGraphics();
try {
graphics.setColor(Color.WHITE);
graphics.drawRect(10, 10, 80, 80);
graphics.drawRect(30, 30, 20, 20);
return image;
}
finally {
graphics.dispose();
}
}
@Override
public Point getInPoint() {
return new Point(20,20);
}
@Override
public Point getOutPoint() {
return new Point(40,40);
}
}
public static class ShapeTest3 extends AbsractShape {
@Override
protected BufferedImage createImage() {
BufferedImage image = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
Graphics graphics = image.createGraphics();
try {
graphics.setColor(Color.WHITE);
graphics.drawLine(10,10,
70,
10);
return image;
}
finally {
graphics.dispose();
}
}
@Override
public Point getInPoint() {
return new Point(20,10);
}
@Override
public Point getOutPoint() {
return new Point(60,60);
}
}
public static class ShapeTest4 extends AbsractShape {
@Override
protected BufferedImage createImage() {
BufferedImage image = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
Graphics graphics = image.createGraphics();
try {
graphics.setColor(Color.WHITE);
Area area = new Area(new Ellipse2D.Double(10,10,80,80));
area.subtract(new Area(new Ellipse2D.Double(30,30,40,40)));
area.subtract(new Area(new Rectangle2D.Double(45,0,10,60)));
((Graphics2D)graphics).draw(area);
return image;
}
finally {
graphics.dispose();
}
}
@Override
public Point getInPoint() {
return new Point(30,30);
}
@Override
public Point getOutPoint() {
return new Point(50,50);
}
}
} |
Remplir en "pot de peinture" un morceau de grille
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