page.php

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        $x = ($x1 + $x2)/2.;
        $y = ($y1 + $y2)/2.;

        $xC = new Zend_Pdf_Element_Numeric($x);
        $yC = new Zend_Pdf_Element_Numeric($y);

        if ($startAngle !== null) {
            if ($startAngle != 0) { $startAngle = fmod($startAngle, M_PI*2); }
            if ($endAngle   != 0) { $endAngle   = fmod($endAngle,   M_PI*2); }

            if ($startAngle > $endAngle) {
                $endAngle += M_PI*2;
            }

            $clipPath    = $xC->toString() . ' ' . $yC->toString() . " m\n";
            $clipSectors = (int)ceil(($endAngle - $startAngle)/M_PI_4);
            $clipRadius  = max($x2 - $x1, $y2 - $y1);

            for($count = 0; $count <= $clipSectors; $count++) {
                $pAngle = $startAngle + ($endAngle - $startAngle)*$count/(float)$clipSectors;

                $pX = new Zend_Pdf_Element_Numeric($x + cos($pAngle)*$clipRadius);
                $pY = new Zend_Pdf_Element_Numeric($y + sin($pAngle)*$clipRadius);
                $clipPath .= $pX->toString() . ' ' . $pY->toString() . " l\n";
            }

            $this->_contents .= "q\n" . $clipPath . "h\nW\nn\n";
        }

        $xLeft  = new Zend_Pdf_Element_Numeric($x1);
        $xRight = new Zend_Pdf_Element_Numeric($x2);
        $yUp    = new Zend_Pdf_Element_Numeric($y2);
        $yDown  = new Zend_Pdf_Element_Numeric($y1);

        $xDelta  = 2*(M_SQRT2 - 1)*($x2 - $x1)/3.;
        $yDelta  = 2*(M_SQRT2 - 1)*($y2 - $y1)/3.;
        $xr = new Zend_Pdf_Element_Numeric($x + $xDelta);
        $xl = new Zend_Pdf_Element_Numeric($x - $xDelta);
        $yu = new Zend_Pdf_Element_Numeric($y + $yDelta);
        $yd = new Zend_Pdf_Element_Numeric($y - $yDelta);

        $this->_contents .= $xC->toString() . ' ' . $yUp->toString() . " m\n"
                         .  $xr->toString() . ' ' . $yUp->toString() . ' '
                         .    $xRight->toString() . ' ' . $yu->toString() . ' '
                         .      $xRight->toString() . ' ' . $yC->toString() . " c\n"
                         .  $xRight->toString() . ' ' . $yd->toString() . ' '
                         .    $xr->toString() . ' ' . $yDown->toString() . ' '
                         .      $xC->toString() . ' ' . $yDown->toString() . " c\n"
                         .  $xl->toString() . ' ' . $yDown->toString() . ' '
                         .    $xLeft->toString() . ' ' . $yd->toString() . ' '
                         .      $xLeft->toString() . ' ' . $yC->toString() . " c\n"
                         .  $xLeft->toString() . ' ' . $yu->toString() . ' '
                         .    $xl->toString() . ' ' . $yUp->toString() . ' '
                         .      $xC->toString() . ' ' . $yUp->toString() . " c\n";

        switch ($fillType) {
            case Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE:
                $this->_contents .= " B*\n";
                break;
            case Zend_Pdf_Page::SHAPE_DRAW_FILL:
                $this->_contents .= " f*\n";
                break;
            case Zend_Pdf_Page::SHAPE_DRAW_STROKE:
                $this->_contents .= " S\n";
                break;
        }

        if ($startAngle !== null) {
            $this->_contents .= "Q\n";
        }
    }

    /**
     * Draw an image at the specified position on the page.
     *
     * @param Zend_Pdf_Image $image
     * @param float $x1
     * @param float $y1
     * @param float $x2
     * @param float $y2
     */
    public function drawImage(Zend_Pdf_Resource_Image $image, $x1, $y1, $x2, $y2)
    {
        $this->_addProcSet('PDF');

        $imageName    = $this->_attachResource('XObject', $image);
        $imageNameObj = new Zend_Pdf_Element_Name($imageName);

        $x1Obj     = new Zend_Pdf_Element_Numeric($x1);
        $y1Obj     = new Zend_Pdf_Element_Numeric($y1);
        $widthObj  = new Zend_Pdf_Element_Numeric($x2 - $x1);
        $heightObj = new Zend_Pdf_Element_Numeric($y2 - $y1);

        $this->_contents .= "q\n"
                         .  '1 0 0 1 ' . $x1Obj->toString() . ' ' . $y1Obj->toString() . " cm\n"
                         .  $widthObj->toString() . ' 0 0 ' . $heightObj->toString() . " 0 0 cm\n"
                         .  $imageNameObj->toString() . " Do\n"
                         .  "Q\n";
    }

    /**
     * Draw a LayoutBox at the specified position on the page.
     *
     * @param Zend_Pdf_Element_LayoutBox $box
     * @param float $x
     * @param float $y
     */
    public function drawLayoutBox($box, $x, $y)
    {
    }

    /**
     * Draw a line from x1,y1 to x2,y2.
     *
     * @param float $x1
     * @param float $y1
     * @param float $x2
     * @param float $y2
     */
    public function drawLine($x1, $y1, $x2, $y2)
    {
        $this->_addProcSet('PDF');

        $x1Obj = new Zend_Pdf_Element_Numeric($x1);
        $y1Obj = new Zend_Pdf_Element_Numeric($y1);
        $x2Obj = new Zend_Pdf_Element_Numeric($x2);
        $y2Obj = new Zend_Pdf_Element_Numeric($y2);

        $this->_contents .= $x1Obj->toString() . ' ' . $y1Obj->toString() . " m\n"
                         .  $x2Obj->toString() . ' ' . $y2Obj->toString() . " l\n S\n";
    }

    /**
     * Draw a polygon.
     *
     * If $fillType is Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE or
     * Zend_Pdf_Page::SHAPE_DRAW_FILL, then polygon is automatically closed.
     * See detailed description of these methods in a PDF documentation
     * (section 4.4.2 Path painting Operators, Filling)
     *
     * @param array $x  - array of float (the X co-ordinates of the vertices)
     * @param array $y  - array of float (the Y co-ordinates of the vertices)
     * @param integer $fillType
     * @param integer $fillMethod
     */
    public function drawPolygon($x, $y,
                                $fillType = Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE,
                                $fillMethod = Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING)
    {
        $this->_addProcSet('PDF');

        $firstPoint = true;
        foreach ($x as $id => $xVal) {
            $xObj = new Zend_Pdf_Element_Numeric($xVal);
            $yObj = new Zend_Pdf_Element_Numeric($y[$id]);

            if ($firstPoint) {
                $path = $xObj->toString() . ' ' . $yObj->toString() . " m\n";
                $firstPoint = false;
            } else {
                $path .= $xObj->toString() . ' ' . $yObj->toString() . " l\n";
            }
        }

        $this->_contents .= $path;

        switch ($fillType) {
            case Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE:
                if ($fillMethod == Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING) {
                    $this->_contents .= " b\n";
                } else {
                    // Even-Odd fill method.
                    $this->_contents .= " b*\n";
                }
                break;
            case Zend_Pdf_Page::SHAPE_DRAW_FILL:
                if ($fillMethod == Zend_Pdf_Page::FILL_METHOD_NON_ZERO_WINDING) {
                    $this->_contents .= " h\n f\n";
                } else {
                    // Even-Odd fill method.
                    $this->_contents .= " h\n f*\n";
                }
                break;
            case Zend_Pdf_Page::SHAPE_DRAW_STROKE:
                $this->_contents .= " S\n";
                break;
        }
    }

    /**
     * Draw a rectangle.
     *
     * Fill types:
     * Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE - fill rectangle and stroke (default)
     * Zend_Pdf_Page::SHAPE_DRAW_STROKE      - stroke rectangle
     * Zend_Pdf_Page::SHAPE_DRAW_FILL        - fill rectangle
     *
     * @param float $x1
     * @param float $y1
     * @param float $x2
     * @param float $y2
     * @param integer $fillType
     */
    public function drawRectangle($x1, $y1, $x2, $y2, $fillType = Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE)
    {
        $this->_addProcSet('PDF');

        $x1Obj      = new Zend_Pdf_Element_Numeric($x1);
        $y1Obj      = new Zend_Pdf_Element_Numeric($y1);
        $widthObj   = new Zend_Pdf_Element_Numeric($x2 - $x1);
        $height2Obj = new Zend_Pdf_Element_Numeric($y2 - $y1);

        $this->_contents .= $x1Obj->toString() . ' ' . $y1Obj->toString() . ' '
                             .  $widthObj->toString() . ' ' . $height2Obj->toString() . " re\n";

        switch ($fillType) {
            case Zend_Pdf_Page::SHAPE_DRAW_FILL_AND_STROKE:
                $this->_contents .= " B*\n";
                break;
            case Zend_Pdf_Page::SHAPE_DRAW_FILL:
                $this->_contents .= " f*\n";
                break;
            case Zend_Pdf_Page::SHAPE_DRAW_STROKE:
                $this->_contents .= " S\n";
                break;
        }
    }

    /**
     * Draw a line of text at the specified position.
     *
     * @param string $text
     * @param float $x
     * @param float $y
     * @param string $charEncoding (optional) Character encoding of source text.
     *   Defaults to current locale.
     * @throws Zend_Pdf_Exception
     */
    public function drawText($text, $x, $y, $charEncoding = '')
    {
        if ($this->_font === null) {
            throw new Zend_Pdf_Exception('Font has not been set');
        }

        $this->_addProcSet('Text');

        $textObj = new Zend_Pdf_Element_String($this->_font->encodeString($text, $charEncoding));
        $xObj    = new Zend_Pdf_Element_Numeric($x);
        $yObj    = new Zend_Pdf_Element_Numeric($y);

        $this->_contents .= "BT\n"
                         .  $xObj->toString() . ' ' . $yObj->toString() . " Td\n"
                         .  $textObj->toString() . " Tj\n"
                         .  "ET\n";
    }

    /**
     * Return the height of this page in points.
     *
     * @return float
     */
    public function getHeight()
    {
        return $this->_pageDictionary->MediaBox->items[3]->value -
               $this->_pageDictionary->MediaBox->items[1]->value;
    }

    /**
     * Return the width of this page in points.
     *
     * @return float
     */
    public function getWidth()
    {
        return $this->_pageDictionary->MediaBox->items[2]->value -
               $this->_pageDictionary->MediaBox->items[0]->value;
    }

     /**
     * Close the path by drawing a straight line back to it's beginning.
     *
     * @throws Zend_Pdf_Exception    - if a path hasn't been started with pathMove()
     */
    public function pathClose()
    {
    }

    /**
     * Continue the open path in a straight line to the specified position.
     *
     * @param float $x  - the X co-ordinate to move to
     * @param float $y  - the Y co-ordinate to move to
     */
    public function pathLine($x, $y)
    {
    }

    /**
     * Start a new path at the specified position. If a path has already been started,
     * move the cursor without drawing a line.
     *
     * @param float $x  - the X co-ordinate to move to
     * @param float $y  - the Y co-ordinate to move to
     */
    public function pathMove($x, $y)
    {
    }

    /**
     * Write raw PDF commands to the page.
     *
     * @param string $data
     */
    public function rawWrite($data)
    {
    }

    /**
     * Rotate the page.
     *
     * @param float $angle
     */
    public function rotate($x, $y, $angle)
    {
        $cos  = new Zend_Pdf_Element_Numeric(cos($angle));
        $sin  = new Zend_Pdf_Element_Numeric(sin($angle));
        $mSin = new Zend_Pdf_Element_Numeric(-$sin->value);

        $xObj = new Zend_Pdf_Element_Numeric($x);
        $yObj = new Zend_Pdf_Element_Numeric($y);

        $mXObj = new Zend_Pdf_Element_Numeric(-$x);
        $mYObj = new Zend_Pdf_Element_Numeric(-$y);


        $this->_addProcSet('PDF');
        $this->_contents .= '1 0 0 1 ' . $xObj->toString() . ' ' . $yObj->toString() . " cm\n"
                         . $cos->toString() . ' ' . $sin->toString()
                         . ' ' . $mSin->toString() . ' ' . $cos->toString() . " 0 0 cm\n"
                         .'1 0 0 1 ' . $mXObj->toString() . ' ' . $mYObj->toString() . " cm\n";
    }


}