static void toBlack(PixelGrid captcha) {
for (int x = 0; x < captcha.getWidth(); x++) {
for (int y = 0; y < captcha.getHeight(); y++) {
if (captcha.grid[x][y] != 0xffffff && captcha.grid[x][y] != 0xff0000) {
captcha.grid[x][y] = 0x000000;
} else captcha.grid[x][y] = 0xffffff;
}
}
}
static void follow(int x0, int y0, PixelGrid px, PixelGrid captcha, double dmin, double dmax) {
px.grid[x0][y0] = 0x000000;
int x = Math.max(0, x0 - 1);
int y = Math.max(0, y0 - 1);
for (x0 = x; x0 < Math.min(x + 2, captcha.getWidth()); x0++) {
for (y0 = y; y0 < Math.min(y + 2, captcha.getHeight()); y0++) {
if (px.grid[x0][y0] == 0xffffff) {
px.grid[x0][y0] = 0x000000;
// follow(x0, y0, px, captcha, dmin, dmax);
}
}
}
}
static void fill(PixelGrid captcha, double dmin, double dmax) {
PixelGrid px = new PixelGrid(captcha.getWidth(), captcha.getHeight());
px.grid = new int[captcha.getWidth()][captcha.getHeight()];
for (int x = 0; x < captcha.getWidth(); x++) {
for (int y = 0; y < captcha.getHeight(); y++) {
px.grid[x][y] = 0xffffff;
}
}
for (int x = 0; x < captcha.getWidth(); x++) {
for (int y = 0; y < captcha.getHeight(); y++) {
if (px.grid[x][y] == 0xffffff && captcha.grid[x][y] != 0xffffff) {
for (int x1 = x; x1 < Math.min(x + dmax, captcha.getWidth()); x1++) {
for (int y1 = y; y1 < Math.min(y + dmax, captcha.getHeight()); y1++) {
if (px.grid[x1][y1] == 0xffffff && captcha.grid[x1][y1] != 0xffffff) {
double xd = (x1 - x);
double yd = (y1 - y);
double diff = Math.sqrt(xd * xd + yd * yd);
if (diff > dmin && diff < dmax) {
if (checkLine(x, x1, y, y1, captcha, 0xffffff)) {
int xadd;
int yadd;
int x1add;
int y1add;
int di = 3;
if (xd == 0) {
xadd = 0;
yadd = di;
x1add = 0;
y1add = di - 1;
} else if (yd == 0) {
xadd = di;
x1add = di - 1;
y1add = 0;
yadd = 0;
} else {
double m = yd / xd;
xadd = (int) Math.floor((1 - m) * di);
yadd = (int) Math.floor(m * di);
x1add = (int) Math.ceil((1 - m) * (di - 1));
y1add = (int) Math.floor(m * (di - 1));
}
// follow((x1-x)/2+x,(y1-y)/2+y, px,
// captcha, dmin, dmax);
int f = y - yadd;
int fx = x - xadd;
if (f > 0
&& fx > 0
&& f < captcha.getHeight()
&& fx < captcha.getWidth()
&& captcha.grid[fx][f] != 0xffffff) {
try {
if (checkLine(x, x - x1add, y, y - y1add, captcha, 0x000000)) {
f = y1 + yadd;
fx = x1 + xadd;
if (f > 0
&& fx > 0
&& f < captcha.getHeight()
&& fx < captcha.getWidth()
&& captcha.grid[fx][f] != 0xffffff
&& checkLine(x1, x1 + x1add, y1, y1 + y1add, captcha, 0x000000)) {
follow(x, y, px, captcha, dmin, dmax);
follow(x1, y1, px, captcha, dmin, dmax);
}
}
} catch (Exception e) {
px.grid[x][y] = captcha.grid[x][y];
}
}
}
}
}
}
}
}
}
}
for (int x = 0; x < captcha.getWidth(); x++) {
for (int y = 0; y < captcha.getHeight(); y++) {
if (captcha.grid[x][y] == 0xffffff) {
px.grid[x][y] = 0xffffff;
}
}
}
captcha.grid = px.grid;
}