Sets the given bit to true.
* * @param $x ; The horizontal component (i.e. which column) * @param $y ; The vertical component (i.e. which row) */ public function set($x, $y) { $offset = (int)($y * $this->rowSize + ($x / 32)); if (!isset($this->bits[$offset])) { $this->bits[$offset] = 0; } //$this->bits[$offset] = $this->bits[$offset]; // if($this->bits[$offset]>200748364){ //$this->bits= 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|= intval32bits(1 << ($x & 0x1f)); $bob = $this->bits[$offset]; $bob |= 1 << ($x & 0x1f); $this->bits[$offset] |= ($bob); //$this->bits[$offset] = intval32bits($this->bits[$offset]); //} //16777216 } public function _unset($x, $y) {//было unset, php не позволяет использовать unset $offset = (int)($y * $this->rowSize + ($x / 32)); $this->bits[$offset] &= ~(1 << ($x & 0x1f)); } /**1 << (249 & 0x1f) *Flips the given bit.
* * @param $x ; The horizontal component (i.e. which column) * @param $y ; The vertical component (i.e. which row) */ public function flip($x, $y) { $offset = $y * $this->rowSize + (int)($x / 32); $this->bits[$offset] = ($this->bits[$offset] ^ (1 << ($x & 0x1f))); } /** * Exclusive-or (XOR): Flip the bit in this {@code BitMatrix} if the corresponding * mask bit is set. * * @param $mask ; XOR mask */ public function _xor($mask) {//было xor, php не позволяет использовать xor if ($this->width != $mask->getWidth() || $this->height != $mask->getHeight() || $this->rowSize != $mask->getRowSize()) { throw new \InvalidArgumentException("input matrix dimensions do not match"); } $rowArray = new BitArray($this->width / 32 + 1); for ($y = 0; $y < $this->height; $y++) { $offset = $y * $this->rowSize; $row = $mask->getRow($y, $rowArray)->getBitArray(); for ($x = 0; $x < $this->rowSize; $x++) { $this->bits[$offset + $x] ^= $row[$x]; } } } /** * Clears all bits (sets to false). */ public function clear() { $max = count($this->bits); for ($i = 0; $i < $max; $i++) { $this->bits[$i] = 0; } } /** *Sets a square region of the bit matrix to true.
* * @param $left ; The horizontal position to begin at (inclusive) * @param $top ; The vertical position to begin at (inclusive) * @param $width ; The width of the region * @param $height ; The height of the region */ public function setRegion($left, $top, $width, $height) { if ($top < 0 || $left < 0) { throw new \InvalidArgumentException("Left and top must be nonnegative"); } if ($height < 1 || $width < 1) { throw new \InvalidArgumentException("Height and width must be at least 1"); } $right = $left + $width; $bottom = $top + $height; if ($bottom > $this->height || $right > $this->width) { //> this.height || right > this.width throw new \InvalidArgumentException("The region must fit inside the matrix"); } for ($y = $top; $y < $bottom; $y++) { $offset = $y * $this->rowSize; for ($x = $left; $x < $right; $x++) { $this->bits[$offset + (int)($x / 32)] = ($this->bits[$offset + (int)($x / 32)] |= 1 << ($x & 0x1f)); } } } /** * Modifies this {@code BitMatrix} to represent the same but rotated 180 degrees */ public function rotate180() { $width = $this->getWidth(); $height = $this->getHeight(); $topRow = new BitArray($width); $bottomRow = new BitArray($width); for ($i = 0; $i < ($height + 1) / 2; $i++) { $topRow = $this->getRow($i, $topRow); $bottomRow = $this->getRow($height - 1 - $i, $bottomRow); $topRow->reverse(); $bottomRow->reverse(); $this->setRow($i, $bottomRow); $this->setRow($height - 1 - $i, $topRow); } } /** * @return The width of the matrix */ public function getWidth() { return $this->width; } /** * A fast method to retrieve one row of data from the matrix as a BitArray. * * @param $y ; The row to retrieve * @param $row ; An optional caller-allocated BitArray, will be allocated if null or too small * * @return The resulting BitArray - this reference should always be used even when passing * your own row */ public function getRow($y, $row) { if ($row == null || $row->getSize() < $this->width) { $row = new BitArray($this->width); } else { $row->clear(); } $offset = $y * $this->rowSize; for ($x = 0; $x < $this->rowSize; $x++) { $row->setBulk($x * 32, $this->bits[$offset + $x]); } return $row; } /** * @param $y ; row to set * @param $row ; {@link BitArray} to copy from */ public function setRow($y, $row) { $this->bits = arraycopy($row->getBitArray(), 0, $this->bits, $y * $this->rowSize, $this->rowSize); } /** * This is useful in detecting the enclosing rectangle of a 'pure' barcode. * * @return {@code left,top,width,height} enclosing rectangle of all 1 bits, or null if it is all white */ public function getEnclosingRectangle() { $left = $this->width; $top = $this->height; $right = -1; $bottom = -1; for ($y = 0; $y < $this->height; $y++) { for ($x32 = 0; $x32 < $this->rowSize; $x32++) { $theBits = $this->bits[$y * $this->rowSize + $x32]; if ($theBits != 0) { if ($y < $top) { $top = $y; } if ($y > $bottom) { $bottom = $y; } if ($x32 * 32 < $left) { $bit = 0; while (($theBits << (31 - $bit)) == 0) { $bit++; } if (($x32 * 32 + $bit) < $left) { $left = $x32 * 32 + $bit; } } if ($x32 * 32 + 31 > $right) { $bit = 31; while ((sdvig3($theBits, $bit)) == 0) {//>>> $bit--; } if (($x32 * 32 + $bit) > $right) { $right = $x32 * 32 + $bit; } } } } } $width = $right - $left; $height = $bottom - $top; if ($width < 0 || $height < 0) { return null; } return [$left, $top, $width, $height]; } /** * This is useful in detecting a corner of a 'pure' barcode. * * @return {@code x,y} coordinate of top-left-most 1 bit, or null if it is all white */ public function getTopLeftOnBit() { $bitsOffset = 0; while ($bitsOffset < count($this->bits) && $this->bits[$bitsOffset] == 0) { $bitsOffset++; } if ($bitsOffset == count($this->bits)) { return null; } $y = $bitsOffset / $this->rowSize; $x = ($bitsOffset % $this->rowSize) * 32; $theBits = $this->bits[$bitsOffset]; $bit = 0; while (($theBits << (31 - $bit)) == 0) { $bit++; } $x += $bit; return [$x, $y]; } public function getBottomRightOnBit() { $bitsOffset = count($this->bits) - 1; while ($bitsOffset >= 0 && $this->bits[$bitsOffset] == 0) { $bitsOffset--; } if ($bitsOffset < 0) { return null; } $y = $bitsOffset / $this->rowSize; $x = ($bitsOffset % $this->rowSize) * 32; $theBits = $this->bits[$bitsOffset]; $bit = 31; while ((sdvig3($theBits, $bit)) == 0) {//>>> $bit--; } $x += $bit; return [$x, $y]; } /** * @return The height of the matrix */ public function getHeight() { return $this->height; } /** * @return The row size of the matrix */ public function getRowSize() { return $this->rowSize; } public function equals($o) { if (!($o instanceof BitMatrix)) { return false; } $other = $o; return $this->width == $other->width && $this->height == $other->height && $this->rowSize == $other->rowSize && $this->bits === $other->bits; } //@Override public function hashCode() { $hash = $this->width; $hash = 31 * $hash + $this->width; $hash = 31 * $hash + $this->height; $hash = 31 * $hash + $this->rowSize; $hash = 31 * $hash + hashCode($this->bits); return $hash; } //@Override public function toString($setString = '', $unsetString = '', $lineSeparator = '') { if (!$setString || !$unsetString) { return (string)'X ' . ' '; } if ($lineSeparator && $lineSeparator !== "\n") { return $this->toString_($setString, $unsetString, $lineSeparator); } return (string)($setString . $unsetString . "\n"); } public function toString_($setString, $unsetString, $lineSeparator) { //$result = new StringBuilder(height * (width + 1)); $result = ''; for ($y = 0; $y < $this->height; $y++) { for ($x = 0; $x < $this->width; $x++) { $result .= ($this->get($x, $y) ? $setString : $unsetString); } $result .= ($lineSeparator); } return (string)$result; } /** * @deprecated call {@link #toString(String,String)} only, which uses \n line separator always */ // @Deprecated /** *Gets the requested bit, where true means black.
* * @param $x ; The horizontal component (i.e. which column) * @param $y ; The vertical component (i.e. which row) * * @return value of given bit in matrix */ public function get($x, $y) { $offset = (int)($y * $this->rowSize + ($x / 32)); if (!isset($this->bits[$offset])) { $this->bits[$offset] = 0; } // return (($this->bits[$offset] >> ($x & 0x1f)) & 1) != 0; return (uRShift($this->bits[$offset], ($x & 0x1f)) & 1) != 0;//было >>> вместо >>, не знаю как эмулировать беззнаковый сдвиг } // @Override public function _clone() { return new BitMatrix($this->width, $this->height, $this->rowSize, $this->bits); } }