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<?php |
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namespace PatchFind\Graph; |
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class Generate implements GenerateInterface{ |
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/** |
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* width of graph |
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* @var int |
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*/ |
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private $x_w; |
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/** |
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* height of graph |
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* @var int |
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*/ |
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private $y_h; |
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/** |
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* create final graph |
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* |
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* @param int $width |
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* @param int $height |
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* @return array |
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*/ |
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public function createGraph($width, $height){ |
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$this->x_w = $width; |
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$this->y_h = $height; |
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$modX = ceil($width/2); |
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$modY = ceil($height/2); |
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$relations = array(); |
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for($y = 0; $y <= $height; $y++){ |
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for($x = 0; $x <= $width; $x++){ |
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$k = $x; $k2 = $y; |
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if($x<$modX) $k = $width-$x; |
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if($y<$modY) $k2 = $height-$y; |
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$k3 = $k; |
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if($k2>$k) $k3 = $k2; |
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$tmpX = $x-1; $tmpY = $y; |
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if($this->checkParams($tmpX, $tmpY)) $relations["($tmpX,$tmpY)"]["($x,$y)"] = $k3; |
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$tmpX2 = $x+1; $tmpY2 = $y; |
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if($this->checkParams($tmpX2, $tmpY2)) $relations["($tmpX2,$tmpY2)"]["($x,$y)"] = $k3; |
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$tmpX3 = $x; $tmpY3 = $y-1; |
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if($this->checkParams($tmpX3, $tmpY3)) $relations["($tmpX3,$tmpY3)"]["($x,$y)"] = $k3; |
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$tmpX4 = $x; $tmpY4 = $y+1; |
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if($this->checkParams($tmpX4, $tmpY4)) $relations["($tmpX4,$tmpY4)"]["($x,$y)"] = $k3; |
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} |
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} |
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return $relations; |
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} |
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/** |
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* load graph from .jpg file |
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* |
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* @param string $file |
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* @return array |
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*/ |
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public function loadFromFile($file){ |
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$res = @imagecreatefromjpeg($file); |
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$relations = array(); |
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if(!$res){ |
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$width = imagesx($res); |
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$height = imagesy($res); |
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$new_tab = array(); |
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for($y = 0; $y <= $height; $y++){ |
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for($x = 0; $x <= $width; $x++){ |
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if($y==$height || $x==$width){ |
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$color = 10; |
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}else{ |
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$color = imagecolorat($res, $x, $y); |
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if(!$color) $color = 255; |
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} |
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$new_tab[$x][$y] = $color; |
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} |
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} |
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$this->x_w = $width; |
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$this->y_h = $height; |
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$modX = ceil($width/2); |
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$modY = ceil($height/2); |
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for($y = 0; $y <= $height; $y++){ |
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for($x = 0; $x <= $width; $x++){ |
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if($new_tab[$x][$y]<=100){ |
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$k3 = 9999; |
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}else{ |
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$k = $x; $k2 = $y; |
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if($x<$modX) $k = $width-$x; |
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if($y<$modY) $k2 = $height-$y; |
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$k3 = $k; |
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if($k2>$k) $k3 = $k2; |
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} |
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$tmpX = $x-1; $tmpY = $y; |
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if($this->checkParams($tmpX, $tmpY)) $relations["($tmpX,$tmpY)"]["($x,$y)"] = $k3; |
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$tmpX2 = $x+1; $tmpY2 = $y; |
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if($this->checkParams($tmpX2, $tmpY2)) $relations["($tmpX2,$tmpY2)"]["($x,$y)"] = $k3; |
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$tmpX3 = $x; $tmpY3 = $y-1; |
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if($this->checkParams($tmpX3, $tmpY3)) $relations["($tmpX3,$tmpY3)"]["($x,$y)"] = $k3; |
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$tmpX4 = $x; $tmpY4 = $y+1; |
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if($this->checkParams($tmpX4, $tmpY4)) $relations["($tmpX4,$tmpY4)"]["($x,$y)"] = $k3; |
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} |
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} |
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} |
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return $relations; |
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} |
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/** |
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* check input params |
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* |
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* @param int $width |
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* @param int $height |
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* @param int $tmpX |
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* @param int $tmpY |
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* @return bool |
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*/ |
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private function checkParams($tmpX, $tmpY){ |
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if($tmpX >= 0 && $tmpY >= 0 && $tmpX <= $this->x_w && $tmpY <= $this->y_h){ |
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$output = true; |
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}else{ |
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$output = false; |
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} |
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return $output; |
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} |
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} |
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mscpatrykkosiba /
dijkstra-patchfind-algorithm
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