File "State.php"
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MIME-type: text/x-php
Charset: utf-8
<?php
class State {
var $map, $resX, $resY, $source;
var $average, $standardDeviation;
public function State($resX, $resY, $img = null) {
$this->resX = $resX;
$this->resY = $resY;
if ($img != null)
$this->fromImage($img);
}
public function fromImage($image) {
$width = $image->getWidth() / $this->resX;
$height = $image->getHeight() / $this->resY;
$this->map = array();
$img = $image->getImage();
for ($y = 0; $y < $this->resY; $y++) {
$this->map[$y] = array();
for ($x = 0; $x < $this->resX; $x++) {
$ga = array("r" => 0, "g" => 0, "b" => 0);
for ($yi = 0; $yi < $height; $yi++)
for ($xi = 0; $xi < $width; $xi++) {
$v = imagecolorat($img, ($x * $width) + $xi, ($y * $height) + $yi);
$ga["r"] += ($v >> 16) & 0xFF;
$ga["g"] += ($v >> 8) & 0xFF;
$ga["b"] += $v & 0xFF;
}
$ga["r"] /= ($width * $height);
$ga["g"] /= ($width * $height);
$ga["b"] /= ($width * $height);
$this->map[$y][$x] = $ga;
}
}
}
public function difference($state, $function = null) {
$map = array();
for ($y = 0; $y < $this->resY; $y++) {
$map[$y] = array();
for ($x = 0; $x < $this->resX; $x++) {
if (isset($function)) {
$map[$y][$x] = $function($this->map[$y][$x], $state->map[$y][$x]);
} else {
$map[$y][$x] = $this->map[$y][$x] - $state->map[$y][$x];
}
}
}
$i = new State($this->resX, $this->resY);
$i->map = $map;
return $i;
}
public function avg() {
if (empty($this->average)) {
$this->average = 0;
for ($y = 0; $y < $this->resY; $y++)
for ($x = 0; $x < $this->resX; $x++)
$this->average += $this->map[$y][$x];
$this->average /= ($this->resX * $this->resY);
}
return $this->average;
}
public function max() {
$this->maximum = 0;
for ($y = 0; $y < $this->resY; $y++)
for ($x = 0; $x < $this->resX; $x++)
if ($this->map[$y][$x] > $this->maximum)
$this->maximum = $this->map[$y][$x];
return $this->maximum;
}
public function stdDev() {
$this->standardDeviation = 0;
$avg = $this->avg();
for ($y = 0; $y < $this->resY; $y++) {
for ($x = 0; $x < $this->resX; $x++) {
$m = ($this->map[$y][$x] - $avg) * ($this->map[$y][$x] - $avg);
$this->standardDeviation += $m;
}
}
$this->standardDeviation /= (($this->resX * $this->resY)-1);
$this->standardDeviation = sqrt($this->standardDeviation);
return $this->standardDeviation;
}
public function denoiseStdDev() {
$dev = $this->stdDev();
for ($y = 0; $y < $this->resY; $y++)
for ($x = 0; $x < $this->resX; $x++)
if (abs($this->map[$y][$x]) < $dev)
$this->map[$y][$x] = 0;
return $this;
}
public function scale($top) {
$max = $this->max();
for ($y = 0; $y < $this->resY; $y++)
for ($x = 0; $x < $this->resX; $x++)
$this->map[$y][$x] = ($this->map[$y][$x] / $max) * $top;
return $this;
}
public function round($round) {
for ($y = 0; $y < $this->resY; $y++)
for ($x = 0; $x < $this->resX; $x++)
$this->map[$y][$x] = round($this->map[$y][$x], $round);
return $this;
}
public function abs() {
for ($y = 0; $y < $this->resY; $y++)
for ($x = 0; $x < $this->resX; $x++)
$this->map[$y][$x] = abs($this->map[$y][$x]);
return $this;
}
public function toString() {
$s = "";
for ($y = 0; $y < $this->resY; $y++) {
for ($x = 0; $x < $this->resX; $x++) {
$s .= $this->map[$y][$x]."\t";
}
$s .= "\n";
}
return $s;
}
public function drawImageIndicator($image) {
$max = $this->max();
$i = $image->getImage();
$width = $image->getWidth() / $this->resX;
$height = $image->getHeight() / $this->resY;
$black = imagecolorallocate($i, 0, 0, 0);
for ($y = 0; $y < $this->resY; $y++) {
for ($x = 0; $x < $this->resX; $x++) {
$v = ($this->map[$y][$x] / $max) * 255;
if ($v > 0) {
$color = imagecolorallocate($i, $v, $v, $v);
imagerectangle($i, $x * $width, $y * $height, $x * $width + $width - 1, $y * $height + $height - 1, $color);
imagestring($i, 2, $x * $width + 3, $y * $height + 1, $this->map[$y][$x], $black);
imagestring($i, 2, $x * $width + 1, $y * $height - 1, $this->map[$y][$x], $black);
imagestring($i, 2, $x * $width + 2, $y * $height, $this->map[$y][$x], $color);
}
}
}
return new SimpleImage($i);
}
public function getBoundingBox($w = null, $h = null) {
if (!isset($w)) $w = $this->resX;
if (!isset($h)) $h = $this->resY;
$ax = $this->resX;
$bx = 0;
$ay = $this->resX;
$by = 0;
for ($y = 0; $y < $this->resY; $y++) {
for ($x = 0; $x < $this->resX; $x++) {
if ($this->map[$y][$x] > 0) {
if ($x > $bx) $bx = $x;
if ($x < $ax) $ax = $x;
if ($y > $by) $by = $y;
if ($y < $ay) $ay = $y;
}
}
}
if ($ax > $bx) {
return null;
} else {
$ax = ($ax / $this->resX) * $w;
$bx = ((($bx+1) / $this->resX) * $w) - $ax;
$ay = ($ay / $this->resY) * $h;
$by = ((($by+1) / $this->resY) * $h) - $ay;
return array("x" => $ax, "y" => $ay, "w" => $bx, "h" => $by);
}
}
public function getCenterOfGravity($w = null, $h = null) {
if (!isset($w)) $w = $this->resX;
if (!isset($h)) $h = $this->resY;
$box = $this->getBoundingBox();
$tx = 0;
$ty = 0;
$m = 0;
for ($y = 0; $y < $this->resY; $y++) {
for ($x = 0; $x < $this->resX; $x++) {
if ($this->map[$y][$x] > 0) {
$m += $this->map[$y][$x];
$tx += $this->map[$y][$x] * (($x+1) - $box["x"]);
$ty += $this->map[$y][$x] * (($y+1) - $box["y"]);
}
}
}
$tx = (($tx / $m)-1) * ($w/$this->resX);
$ty = (($ty / $m)-1) * ($h/$this->resY);
$tx += ($w/$this->resX) * $box["x"] + (($w/$this->resX)/2);
$ty += ($h/$this->resY) * $box["y"] + (($h/$this->resY)/2);
return array("x" => $tx, "y" => $ty);
}
}
function rgbColorDistance ($x, $y) {
$r = $x["r"] - $y["r"];
$r *= $r;
$g = $x["g"] - $y["g"];
$g *= $g;
$b = $x["b"] - $y["b"];
$b *= $b;
$v = $r + $g + $b;
return sqrt($v);
}
?>