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<?php |
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namespace Alpha\Util\Graph; |
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use Alpha\Exception\IllegalArguementException; |
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/** |
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* Maintains the geometry for a tree node. |
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* |
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* @since 1.0 |
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* |
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* @author John Collins <[email protected]> |
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* @license http://www.opensource.org/licenses/bsd-license.php The BSD License |
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* @copyright Copyright (c) 2019, John Collins (founder of Alpha Framework). |
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* All rights reserved. |
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* |
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* <pre> |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the |
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* following conditions are met: |
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* |
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* * Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the |
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* following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the |
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* following disclaimer in the documentation and/or other |
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* materials provided with the distribution. |
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* * Neither the name of the Alpha Framework nor the names |
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* of its contributors may be used to endorse or promote |
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* products derived from this software without specific |
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* prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* </pre> |
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*/ |
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class GraphNode |
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{ |
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/** |
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* The id of the node. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $id = 0; |
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/** |
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* The height of the node. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $height = 0; |
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/** |
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* The width of the node. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $width = 0; |
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/** |
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* The x position of the node. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $x = 0; |
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/** |
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* The y position of the node. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $y = 0; |
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/** |
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* The node to the left of this one. |
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* |
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* @var Alpha\Util\Graph\GraphNode |
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* |
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* @since 1.0 |
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*/ |
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private $leftNode; |
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/** |
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* The node to the right of this one. |
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* |
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* @var Alpha\Util\Graph\GraphNode |
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* |
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* @since 1.0 |
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*/ |
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private $rightNode; |
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/** |
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* An array of child nodes of this node. |
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* |
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* @var array |
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* |
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* @since 1.0 |
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*/ |
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private $children = array(); |
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/** |
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* The margin offset of the current node. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $offset = 0; |
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/** |
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* Optional positional modifier. |
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* |
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* @var int |
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* |
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* @since 1.0 |
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*/ |
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private $modifier = 0; |
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/** |
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* Parent node of this node (if any). |
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* |
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* @var Alpha\Util\Graph\GraphNode |
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* |
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* @since 1.0 |
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*/ |
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private $parentNode; |
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/** |
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* The text message to display on the node. |
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* |
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* @var string |
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* |
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* @since 1.0 |
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*/ |
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private $message; |
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/** |
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* A 2D array of the coordinates of the endpoints for connectots on this node. |
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* |
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* @var array |
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* |
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* @since 1.0 |
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*/ |
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private $links = array(); |
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/** |
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* An array containing the R,G,B values for the colour of this node. |
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* |
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* @var array |
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* |
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* @since 1.0 |
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*/ |
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private $nodeColour = array(); |
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/** |
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* If the node is clickable in an image map, use this property to hold the target URL. |
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* |
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* @var string |
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* |
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* @since 1.0 |
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*/ |
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private $URL; |
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/** |
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* Constructor. |
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* |
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* @param int $id |
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* @param int $width |
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* @param int $height |
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* @param string $message |
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* @param array $nodeColour |
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* @param string $URL |
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*/ |
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public function __construct($id, $width, $height, $message = '', $nodeColour = array(), $URL = null) |
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{ |
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$this->id = $id; |
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$this->width = $width; |
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$this->height = $height; |
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$this->message = $message; |
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$this->nodeColour = $nodeColour; |
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$this->URL = $URL; |
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} |
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/** |
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* Get the node colour array. |
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* |
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* @return array |
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* |
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* @since 1.0 |
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*/ |
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public function getNodeColour() |
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{ |
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return $this->nodeColour; |
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} |
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/** |
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* Set the node colour array. |
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* |
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* @param array $nodeColour |
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* |
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* @throws Alpha\Exception\IllegalArguementException |
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* |
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* @since 1.0 |
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*/ |
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public function setNodeColour($nodeColour) |
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{ |
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if (is_array($nodeColour) && count($nodeColour) == 3) { |
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$this->nodeColour = $nodeColour; |
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} else { |
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throw new IllegalArguementException('The nodeColour value passed ['.$nodeColour.'] is not a valid array!'); |
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} |
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} |
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/** |
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* Get the node URL. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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*/ |
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public function getURL() |
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{ |
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return $this->URL; |
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} |
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/** |
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* Set the node URL. |
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* |
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* @param string $URL |
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* |
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* @since 1.0 |
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*/ |
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public function setURL($URL) |
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{ |
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$this->URL = $URL; |
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} |
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/** |
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* Get the node text message. |
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* |
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* @return string |
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* |
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* @since 1.0 |
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*/ |
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public function getMessage() |
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{ |
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return $this->message; |
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} |
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/** |
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* Set the node text message. |
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* |
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* @param string $message |
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* |
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* @since 1.0 |
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*/ |
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public function setMessage($message) |
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{ |
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$this->message = $message; |
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} |
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/** |
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* Get the node offset. |
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* |
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* @return integer |
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* |
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* @since 1.0 |
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*/ |
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public function getOffset() |
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{ |
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return $this->offset; |
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} |
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/** |
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* Set the node offset. |
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* |
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* @param int $offset |
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* |
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* @since 1.0 |
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*/ |
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public function setOffset($offset) |
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{ |
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$this->offset = $offset; |
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} |
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/** |
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* Get the node modifier. |
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* |
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* @return int |
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* |
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* @since 1.0 |
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*/ |
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public function getModifier() |
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{ |
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return $this->modifier; |
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} |
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/** |
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* Set the node modifier. |
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* |
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* @param int $modifier |
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* |
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* @since 1.0 |
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*/ |
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public function setModifier($modifier) |
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{ |
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$this->modifier = $modifier; |
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} |
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/** |
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* Get the number of child nodes attached to this node. |
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* |
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* @return int |
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* |
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* @since 1.0 |
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*/ |
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public function childCount() |
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{ |
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return count($this->children); |
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} |
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/** |
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* Get the parent node of this node (if any). |
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* |
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* @return Alpha\Util\Graph\GraphNode |
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* |
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* @since 1.0 |
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*/ |
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public function getParentNode() |
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{ |
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return $this->parentNode; |
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} |
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/** |
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* Set the parent node. |
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* |
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* @param Alpha\Util\Graph\GraphNode $node |
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* |
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* @throws Alpha\Exception\IllegalArguementException |
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* |
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* @since 1.0 |
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*/ |
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public function setParentNode($node) |
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{ |
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if ($node instanceof self) { |
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$this->parentNode = $node; |
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} else { |
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throw new IllegalArguementException('The node object passed to setParentNode is not a valid GraphNode instance!'); |
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} |
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} |
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/** |
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* Get the node to the left of this one (if any). |
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* |
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* @return Alpha\Util\Graph\GraphNode |
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* |
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* @since 1.0 |
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*/ |
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public function getLeftSibling() |
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{ |
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if ($this->leftNode) { |
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return $this->leftNode; |
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} else { |
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return; |
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} |
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} |
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|
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/** |
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* Sets the node to the left of this node. |
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* |
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* @param Alpha\Util\Graph\GraphNode $node |
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* |
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* @throws Alpha\Exception\IllegalArguementException |
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* |
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* @since 1.0 |
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*/ |
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public function setLeftSibling($node) |
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{ |
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if ($node instanceof self) { |
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$this->leftNode = $node; |
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} else { |
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throw new IllegalArguementException('The node object passed to setLeftSibling is not a valid GraphNode instance!'); |
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} |
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} |
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|
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/** |
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* Get the node to the right of this one (if any). |
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* |
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* @return Alpha\Util\Graph\GraphNode |
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* |
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* @since 1.0 |
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*/ |
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public function getRightSibling() |
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{ |
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if ($this->rightNode) { |
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return $this->rightNode; |
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} else { |
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return; |
421
|
|
|
} |
422
|
|
|
} |
423
|
|
|
|
424
|
|
|
/** |
425
|
|
|
* Sets the node to the right of this node. |
426
|
|
|
* |
427
|
|
|
* @param Alpha\Util\Graph\GraphNode $node |
428
|
|
|
* |
429
|
|
|
* @throws Alpha\Exception\IllegalArguementException |
430
|
|
|
* |
431
|
|
|
* @since 1.0 |
432
|
|
|
*/ |
433
|
|
|
public function setRightSibling($node) |
434
|
|
|
{ |
435
|
|
|
if ($node instanceof self) { |
436
|
|
|
$this->rightNode = $node; |
437
|
|
|
} else { |
438
|
|
|
throw new IllegalArguementException('The node object passed to setRightSibling is not a valid GraphNode instance!'); |
439
|
|
|
} |
440
|
|
|
} |
441
|
|
|
|
442
|
|
|
/** |
443
|
|
|
* Gets the child node at the index provided, or returns false if none is found. |
444
|
|
|
* |
445
|
|
|
* @param int $i |
446
|
|
|
* |
447
|
|
|
* @return mixed |
448
|
|
|
* |
449
|
|
|
* @since 1.0 |
450
|
|
|
*/ |
451
|
|
|
public function getChildAt($i) |
452
|
|
|
{ |
453
|
|
|
if (isset($this->children[$i])) { |
454
|
|
|
return $this->children[$i]; |
455
|
|
|
} else { |
456
|
|
|
return false; |
457
|
|
|
} |
458
|
|
|
} |
459
|
|
|
|
460
|
|
|
/** |
461
|
|
|
* Calculates and returns the midpoint X coordinate of the children of this node. |
462
|
|
|
* |
463
|
|
|
* @return double |
464
|
|
|
* |
465
|
|
|
* @since 1.0 |
466
|
|
|
*/ |
467
|
|
|
public function getChildrenCenter() |
468
|
|
|
{ |
469
|
|
|
$node = $this->getChildAt(0); |
470
|
|
|
$node1 = $this->getChildAt(count($this->children)-1); |
471
|
|
|
|
472
|
|
|
return $node->getOffset()+(($node1->getOffset()-$node->getOffset())+$node1->getWidth())/2; |
473
|
|
|
} |
474
|
|
|
|
475
|
|
|
/** |
476
|
|
|
* Returns the array of child GraphNode objects. |
477
|
|
|
* |
478
|
|
|
* @return array |
479
|
|
|
* |
480
|
|
|
* @since 1.0 |
481
|
|
|
*/ |
482
|
|
|
public function getChildren() |
483
|
|
|
{ |
484
|
|
|
return $this->children; |
485
|
|
|
} |
486
|
|
|
|
487
|
|
|
/** |
488
|
|
|
* Add a new node to the children array of this node. |
489
|
|
|
* |
490
|
|
|
* @param GraphNode $node |
491
|
|
|
* |
492
|
|
|
* @throws ALpha\Exception\IllegalArguementException |
493
|
|
|
* |
494
|
|
|
* @since 1.0 |
495
|
|
|
*/ |
496
|
|
|
public function addChild($node) |
497
|
|
|
{ |
498
|
|
|
if ($node instanceof self) { |
499
|
|
|
array_push($this->children, $node); |
500
|
|
|
} else { |
501
|
|
|
throw new IllegalArguementException('The node object passed to addChild is not a valid GraphNode instance!'); |
502
|
|
|
} |
503
|
|
|
} |
504
|
|
|
|
505
|
|
|
/** |
506
|
|
|
* Returns the links array. |
507
|
|
|
* |
508
|
|
|
* @return array |
509
|
|
|
* |
510
|
|
|
* @since 1.0 |
511
|
|
|
*/ |
512
|
|
|
public function getLinks() |
513
|
|
|
{ |
514
|
|
|
return $this->links; |
515
|
|
|
} |
516
|
|
|
|
517
|
|
|
/** |
518
|
|
|
* Sets up the array of connector endpoints. |
519
|
|
|
* |
520
|
|
|
* @since 1.0 |
521
|
|
|
*/ |
522
|
|
|
public function setUpLinks() |
523
|
|
|
{ |
524
|
|
|
$xa = $this->x+($this->width/2); |
525
|
|
|
$ya = $this->y+$this->height; |
526
|
|
|
|
527
|
|
|
foreach ($this->children as $child) { |
528
|
|
|
$xd = $xc = $child->getX()+($child->getWidth()/2); |
529
|
|
|
$yd = $child->getY(); |
530
|
|
|
$xb = $xa; |
531
|
|
|
$yb = $yc = $ya+($yd-$ya)/2; |
532
|
|
|
$this->links[$child->id]['xa'] = $xa; |
533
|
|
|
$this->links[$child->id]['ya'] = $ya; |
534
|
|
|
$this->links[$child->id]['xb'] = $xb; |
535
|
|
|
$this->links[$child->id]['yb'] = $yb; |
536
|
|
|
$this->links[$child->id]['xc'] = $xc; |
537
|
|
|
$this->links[$child->id]['yc'] = $yc; |
538
|
|
|
$this->links[$child->id]['xd'] = $xd; |
539
|
|
|
$this->links[$child->id]['yd'] = $yd; |
540
|
|
|
} |
541
|
|
|
} |
542
|
|
|
|
543
|
|
|
/** |
544
|
|
|
* Returns the node height. |
545
|
|
|
* |
546
|
|
|
* @return int |
547
|
|
|
* |
548
|
|
|
* @since 1.0 |
549
|
|
|
*/ |
550
|
|
|
public function getHeight() |
551
|
|
|
{ |
552
|
|
|
return $this->height; |
553
|
|
|
} |
554
|
|
|
|
555
|
|
|
/** |
556
|
|
|
* Returns the node width. |
557
|
|
|
* |
558
|
|
|
* @return int |
559
|
|
|
* |
560
|
|
|
* @since 1.0 |
561
|
|
|
*/ |
562
|
|
|
public function getWidth() |
563
|
|
|
{ |
564
|
|
|
return $this->width; |
565
|
|
|
} |
566
|
|
|
|
567
|
|
|
/** |
568
|
|
|
* Returns the node X-coordinate. |
569
|
|
|
* |
570
|
|
|
* @return int |
571
|
|
|
* |
572
|
|
|
* @since 1.0 |
573
|
|
|
*/ |
574
|
|
|
public function getX() |
575
|
|
|
{ |
576
|
|
|
return $this->x; |
577
|
|
|
} |
578
|
|
|
|
579
|
|
|
/** |
580
|
|
|
* Returns the node Y-coordinate. |
581
|
|
|
* |
582
|
|
|
* @return int |
583
|
|
|
* |
584
|
|
|
* @since 1.0 |
585
|
|
|
*/ |
586
|
|
|
public function getY() |
587
|
|
|
{ |
588
|
|
|
return $this->y; |
589
|
|
|
} |
590
|
|
|
|
591
|
|
|
/** |
592
|
|
|
* Sets the node X-coordinate. |
593
|
|
|
* |
594
|
|
|
* @param int $x |
595
|
|
|
* |
596
|
|
|
* @since 1.0 |
597
|
|
|
*/ |
598
|
|
|
public function setX($x) |
599
|
|
|
{ |
600
|
|
|
$this->x = $x; |
601
|
|
|
} |
602
|
|
|
|
603
|
|
|
/** |
604
|
|
|
* Sets the node Y-coordinate. |
605
|
|
|
* |
606
|
|
|
* @param int $y |
607
|
|
|
* |
608
|
|
|
* @since 1.0 |
609
|
|
|
*/ |
610
|
|
|
public function setY($y) |
611
|
|
|
{ |
612
|
|
|
$this->y = $y; |
613
|
|
|
} |
614
|
|
|
|
615
|
|
|
/** |
616
|
|
|
* Returns the node ID. |
617
|
|
|
* |
618
|
|
|
* @return int |
619
|
|
|
* |
620
|
|
|
* @since 3.1 |
621
|
|
|
*/ |
622
|
|
|
public function getID() |
623
|
|
|
{ |
624
|
|
|
return $this->id; |
625
|
|
|
} |
626
|
|
|
} |
627
|
|
|
|