EZ-Components

2026-07-24 10:22:18 +00:00 · 2009-02-17 15:27:43 +00:00
parent 359c3c55c9
commit 0a8e90a8b3
572 changed files with 64490 additions and 0 deletions
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+<?php
+/**
+ * File containing the ezcGraphRotation class
+ *
+ * @package Graph
+ * @version 1.3
+ * @copyright Copyright (C) 2005-2008 eZ systems as. All rights reserved.
+ * @license http://ez.no/licenses/new_bsd New BSD License
+ * @access private
+ */
+/**
+ * Class to create rotation matrices from given rotation and center point
+ *
+ * @version 1.3
+ * @package Graph
+ * @access private
+ */
+class ezcGraphRotation extends ezcGraphTransformation
+{
+    /**
+     * Rotation in degrees
+     * 
+     * @var float
+     */
+    protected $rotation;
+
+    /**
+     * Center point 
+     * 
+     * @var ezcGraphCoordinate
+     */
+    protected $center;
+
+    /**
+     * Construct rotation matrix from rotation (in degrees) and optional 
+     * center point.
+     * 
+     * @param int $rotation 
+     * @param ezcGraphCoordinate $center 
+     * @return ezcGraphTransformation
+     */
+    public function __construct( $rotation = 0, ezcGraphCoordinate $center = null )
+    {
+        $this->rotation = (float) $rotation;
+
+        if ( $center === null )
+        {
+            $this->center = new ezcGraphCoordinate( 0, 0 );
+
+            $clockwiseRotation = deg2rad( $rotation );
+            $rotationMatrixArray = array( 
+                array( cos( $clockwiseRotation ), -sin( $clockwiseRotation ), 0 ),
+                array( sin( $clockwiseRotation ), cos( $clockwiseRotation ), 0 ),
+                array( 0, 0, 1 ),
+            );
+
+            return parent::__construct( $rotationMatrixArray );
+        }
+
+        parent::__construct();
+
+        $this->center = $center;
+
+        $this->multiply( new ezcGraphTranslation( $center->x, $center->y ) );
+        $this->multiply( new ezcGraphRotation( $rotation ) );
+        $this->multiply( new ezcGraphTranslation( -$center->x, -$center->y ) );
+    }
+
+    /**
+     * Return rotaion angle in degrees
+     * 
+     * @return float
+     */
+    public function getRotation()
+    {
+        return $this->rotation;
+    }
+
+    /**
+     * Return the center point of the current rotation
+     * 
+     * @return ezcGraphCoordinate
+     */
+    public function getCenter()
+    {
+        return $this->center;
+    }
+}
+
+?>