class pPie
 {
  var $pChartObject = array();
  var $pDataObject = array();
  var $LabelPos = "";

  /* Class creator */
  function pPie($Object, $pDataObject) 
   {
    /* Cache the pChart object reference */
    $this->pChartObject = $Object;

    /* Cache the pData object reference */
    $this->pDataObject = $pDataObject;
  }

  /* Draw a pie chart */
  function draw2DPie($X, $Y, $Format = "") 
   {
    $Radius = isset($Format ["Radius"]) ? $Format ["Radius"] : 60;
    $Precision = isset($Format ["Precision"]) ? $Format ["Precision"] : 0;
    $DataGapAngle = isset($Format ["DataGapAngle"]) ? $Format ["DataGapAngle"] : 0;
    $DataGapRadius = isset($Format ["DataGapRadius"]) ? $Format ["DataGapRadius"] : 0;
    $SecondPass = isset($Format ["SecondPass"]) ? $Format ["SecondPass"] : TRUE;
    $Border = isset($Format ["Border"]) ? $Format ["Border"] : FALSE;
    $BorderR = isset($Format ["BorderR"]) ? $Format ["BorderR"] : 255;
    $BorderG = isset($Format ["BorderG"]) ? $Format ["BorderG"] : 255;
    $BorderB = isset($Format ["BorderB"]) ? $Format ["BorderB"] : 255;
    $Shadow = isset($Format ["Shadow"]) ? $Format ["Shadow"] : FALSE;
    $DrawLabels = isset($Format ["DrawLabels"]) ? $Format ["DrawLabels"] : FALSE;
    $LabelStacked = isset($Format ["LabelStacked"]) ? $Format ["LabelStacked"] : FALSE;
    $LabelColor = isset($Format ["LabelColor"]) ? $Format ["LabelColor"] : PIE_LABEL_COLOR_MANUAL;
    $LabelR = isset($Format ["LabelR"]) ? $Format ["LabelR"] : 0;
    $LabelG = isset($Format ["LabelG"]) ? $Format ["LabelG"] : 0;
    $LabelB = isset($Format ["LabelB"]) ? $Format ["LabelB"] : 0;
    $LabelAlpha = isset($Format ["LabelAlpha"]) ? $Format ["LabelAlpha"] : 100;
    $WriteValues = isset($Format ["WriteValues"]) ? $Format ["WriteValues"] : NULL;
    $ValuePosition = isset($Format ["ValuePosition"]) ? $Format ["ValuePosition"] : PIE_VALUE_OUTSIDE;
    $ValuePadding = isset($Format ["ValuePadding"]) ? $Format ["ValuePadding"] : 15;
    $ValueSuffix = isset($Format ["ValueSuffix"]) ? $Format ["ValueSuffix"] : "";
    $ValueR = isset($Format ["ValueR"]) ? $Format ["ValueR"] : 255;
    $ValueG = isset($Format ["ValueG"]) ? $Format ["ValueG"] : 255;
    $ValueB = isset($Format ["ValueB"]) ? $Format ["ValueB"] : 255;
    $ValueAlpha = isset($Format ["ValueAlpha"]) ? $Format ["ValueAlpha"] : 100;
    $RecordImageMap = isset($Format ["RecordImageMap"]) ? $Format ["RecordImageMap"] : FALSE;

    /* Data Processing */
    $Data = $this->pDataObject->getData();
    $Palette = $this->pDataObject->getPalette();

    /* Do we have an abscissa serie defined? */
    if ($Data ["Abscissa"] == "") {
      return (PIE_NO_ABSCISSA);
    }

    /* Try to find the data serie */
    $DataSerie = "";
    foreach ($Data ["Series"] as $SerieName => $SerieData) 
     {
      if ($SerieName != $Data ["Abscissa"]) {
        $DataSerie = $SerieName;
      }
    }

    /* Do we have data to compute? */
    if ($DataSerie == "") {
      return (PIE_NO_DATASERIE);
    }

    /* Remove unused data */
    list($Data, $Palette) = $this->clean0Values($Data, $Palette, $DataSerie, $Data ["Abscissa"]);

    /* Compute the pie sum */
    $SerieSum = $this->pDataObject->getSum($DataSerie);

    /* Do we have data to draw? */
    if ($SerieSum == 0) {
      return (PIE_SUMISNULL);
    }

    /* Dump the real number of data to draw */
    $Values = array();
    foreach ($Data ["Series"][$DataSerie]["Data"] as $Key => $Value) 
     {
      if ($Value != 0) {
        $Values [] = $Value;
      }
    }

    /* Compute the wasted angular space between series */
    if (count($Values) == 1) {
      $WastedAngular = 0;
    }
    else {
      $WastedAngular = count($Values) * $DataGapAngle;
    }

    /* Compute the scale */
    $ScaleFactor = (360 - $WastedAngular) / $SerieSum;

    $RestoreShadow = $this->pChartObject->Shadow;
    if ($this->pChartObject->Shadow) 
     {
      $this->pChartObject->Shadow = FALSE;

      $ShadowFormat = $Format;
      $ShadowFormat ["Shadow"] = TRUE;
      $this->draw2DPie($X + $this->pChartObject->ShadowX, $Y + $this->pChartObject->ShadowY, $ShadowFormat);
    }

    /* Draw the polygon pie elements */
    $Step = 360 / (2 * PI * $Radius);
    $Offset = 0;
    $ID = 0;
    foreach ($Values as $Key => $Value) 
     {
      if ($Shadow) {
        $Settings = array("R" => $this->pChartObject->ShadowR, "G" => $this->pChartObject->ShadowG, "B" => $this->pChartObject->ShadowB, "Alpha" => $this->pChartObject->Shadowa);
      }
      else 
       {
        if (!isset($Palette [$ID]["R"])) {
          $Color = $this->pChartObject->getRandomColor();
          $Palette [$ID] = $Color;
          $this->pDataObject->savePalette($ID, $Color);
        }
        $Settings = array("R" => $Palette [$ID]["R"], "G" => $Palette [$ID]["G"], "B" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
      }

      if (!$SecondPass && !$Shadow) 
       {
        if (!$Border) {
          $Settings ["Surrounding"] = 10;
        }
        else 
         {
          $Settings ["BorderR"] = $BorderR;
          $Settings ["BorderG"] = $BorderG;
          $Settings ["BorderB"] = $BorderB;
        }
      }

      $Plots = array();
      $EndAngle = $Offset + ($Value * $ScaleFactor);
      if ($EndAngle > 360) {
        $EndAngle = 360;
      }

      $Angle = ($EndAngle - $Offset) / 2 + $Offset;
      if ($DataGapAngle == 0) 
       {
        $X0 = $X;
        $Y0 = $Y;
      }
      else 
       {
        $X0 = cos(($Angle -90) * PI / 180) * $DataGapRadius + $X;
        $Y0 = sin(($Angle -90) * PI / 180) * $DataGapRadius + $Y;
      }

      $Plots [] = $X0;
      $Plots [] = $Y0;


      for ($i = $Offset; $i <= $EndAngle; $i = $i + $Step) 
       {
        $Xc = cos(($i -90) * PI / 180) * $Radius + $X;
        $Yc = sin(($i -90) * PI / 180) * $Radius + $Y;

        if ($SecondPass && ($i < 90)) {
          $Yc++;
        }
        if ($SecondPass && ($i > 180 && $i < 270)) {
          $Xc++;
        }
        if ($SecondPass && ($i >= 270)) {
          $Xc++;
          $Yc++;
        }

        $Plots [] = $Xc;
        $Plots [] = $Yc;
      }

      $this->pChartObject->drawPolygon($Plots, $Settings);
      if ($RecordImageMap && !$Shadow) {
        $this->pChartObject->addToImageMap("POLY", $this->arraySerialize($Plots), $this->pChartObject->toHTMLColor($Palette [$ID]["R"], $Palette [$ID]["G"], $Palette [$ID]["B"]), $Data ["Series"][$Data ["Abscissa"]]["Data"][$Key], $Value);
      }

      if ($DrawLabels && !$Shadow && !$SecondPass) 
       {
        if ($LabelColor == PIE_LABEL_COLOR_AUTO) 
         {
          $Settings = array("FillR" => $Palette [$ID]["R"], "FillG" => $Palette [$ID]["G"], "FillB" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
        }
        else 
         {
          $Settings = array("FillR" => $LabelR, "FillG" => $LabelG, "FillB" => $LabelB, "Alpha" => $LabelAlpha);
        }

        $Angle = ($EndAngle - $Offset) / 2 + $Offset;
        $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
        $Yc = sin(($Angle -90) * PI / 180) * $Radius + $Y;

        $Label = $Data ["Series"][$Data ["Abscissa"]]["Data"][$Key];

        if ($LabelStacked) {
          $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, TRUE, $X, $Y, $Radius);
        }
        else {
          $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, FALSE);
        }
      }

      $Offset = $i + $DataGapAngle;
      $ID++;
    }

    /* Second pass to smooth the angles */
    if ($SecondPass) 
     {
      $Step = 360 / (2 * PI * $Radius);
      $Offset = 0;
      $ID = 0;
      foreach ($Values as $Key => $Value) 
       {
        $FirstPoint = TRUE;
        if ($Shadow) {
          $Settings = array("R" => $this->pChartObject->ShadowR, "G" => $this->pChartObject->ShadowG, "B" => $this->pChartObject->ShadowB, "Alpha" => $this->pChartObject->Shadowa);
        }
        else 
         {
          if ($Border) {
            $Settings = array("R" => $BorderR, "G" => $BorderG, "B" => $BorderB);
          }
          else {
            $Settings = array("R" => $Palette [$ID]["R"], "G" => $Palette [$ID]["G"], "B" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
          }
        }

        $EndAngle = $Offset + ($Value * $ScaleFactor);
        if ($EndAngle > 360) {
          $EndAngle = 360;
        }

        if ($DataGapAngle == 0) 
         {
          $X0 = $X;
          $Y0 = $Y;
        }
        else 
         {
          $Angle = ($EndAngle - $Offset) / 2 + $Offset;
          $X0 = cos(($Angle -90) * PI / 180) * $DataGapRadius + $X;
          $Y0 = sin(($Angle -90) * PI / 180) * $DataGapRadius + $Y;
        }
        $Plots [] = $X0;
        $Plots [] = $Y0;

        for ($i = $Offset; $i <= $EndAngle; $i = $i + $Step) 
         {
          $Xc = cos(($i -90) * PI / 180) * $Radius + $X;
          $Yc = sin(($i -90) * PI / 180) * $Radius + $Y;

          if ($FirstPoint) {
            $this->pChartObject->drawLine($Xc, $Yc, $X0, $Y0, $Settings);
          }
          {              $FirstPoint = FALSE;          }

          $this->pChartObject->drawAntialiasPixel($Xc, $Yc, $Settings);
        }
        $this->pChartObject->drawLine($Xc, $Yc, $X0, $Y0, $Settings);

        if ($DrawLabels && !$Shadow) 
         {
          if ($LabelColor == PIE_LABEL_COLOR_AUTO) 
           {
            $Settings = array("FillR" => $Palette [$ID]["R"], "FillG" => $Palette [$ID]["G"], "FillB" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
          }
          else 
           {
            $Settings = array("FillR" => $LabelR, "FillG" => $LabelG, "FillB" => $LabelB, "Alpha" => $LabelAlpha);
          }

          $Angle = ($EndAngle - $Offset) / 2 + $Offset;
          $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
          $Yc = sin(($Angle -90) * PI / 180) * $Radius + $Y;

          $Label = $Data ["Series"][$Data ["Abscissa"]]["Data"][$Key];

          if ($LabelStacked) {
            $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, TRUE, $X, $Y, $Radius);
          }
          else {
            $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, FALSE);
          }
        }

        $Offset = $i + $DataGapAngle;
        $ID++;
      }
    }

    if ($WriteValues != NULL && !$Shadow) 
     {
      $Step = 360 / (2 * PI * $Radius);
      $Offset = 0;
      $ID = count($Values) -1;
      $Settings = array("Align" => TEXT_ALIGN_MIDDLEMIDDLE, "R" => $ValueR, "G" => $ValueG, "B" => $ValueB, "Alpha" => $ValueAlpha);
      foreach ($Values as $Key => $Value) 
       {
        $EndAngle = ($Value * $ScaleFactor) + $Offset;
        if ((int) $EndAngle > 360) {
          $EndAngle = 0;
        }
        $Angle = ($EndAngle - $Offset) / 2 + $Offset;

        if ($ValuePosition == PIE_VALUE_OUTSIDE) 
         {
          $Xc = cos(($Angle -90) * PI / 180) * ($Radius + $ValuePadding) + $X;
          $Yc = sin(($Angle -90) * PI / 180) * ($Radius + $ValuePadding) + $Y;
        }
        else 
         {
          $Xc = cos(($Angle -90) * PI / 180) * ($Radius) / 2 + $X;
          $Yc = sin(($Angle -90) * PI / 180) * ($Radius) / 2 + $Y;
        }

        if ($WriteValues == PIE_VALUE_PERCENTAGE) {
          $Display = round((100 / $SerieSum) * $Value, $Precision) . "%";
        }
        elseif ($WriteValues == PIE_VALUE_NATURAL) {
          $Display = $Value . $ValueSuffix;
        }

        $this->pChartObject->drawText($Xc, $Yc, $Display, $Settings);

        $Offset = $EndAngle + $DataGapAngle;
        $ID--;
      }
    }

    if ($DrawLabels && $LabelStacked) {
      $this->writeShiftedLabels();
    }

    $this->pChartObject->Shadow = $RestoreShadow;

    return (PIE_RENDERED);
  }

  /* Draw a 3D pie chart */
  function draw3DPie($X, $Y, $Format = "") 
   {
    /* Rendering layout */
    $Radius = isset($Format ["Radius"]) ? $Format ["Radius"] : 80;
    $Precision = isset($Format ["Precision"]) ? $Format ["Precision"] : 0;
    $SkewFactor = isset($Format ["SkewFactor"]) ? $Format ["SkewFactor"] : .5;
    $SliceHeight = isset($Format ["SliceHeight"]) ? $Format ["SliceHeight"] : 20;
    $DataGapAngle = isset($Format ["DataGapAngle"]) ? $Format ["DataGapAngle"] : 0;
    $DataGapRadius = isset($Format ["DataGapRadius"]) ? $Format ["DataGapRadius"] : 0;
    $SecondPass = isset($Format ["SecondPass"]) ? $Format ["SecondPass"] : TRUE;
    $Border = isset($Format ["Border"]) ? $Format ["Border"] : FALSE;
    $Shadow = isset($Format ["Shadow"]) ? $Format ["Shadow"] : FALSE;
    $DrawLabels = isset($Format ["DrawLabels"]) ? $Format ["DrawLabels"] : FALSE;
    $LabelStacked = isset($Format ["LabelStacked"]) ? $Format ["LabelStacked"] : FALSE;
    $LabelColor = isset($Format ["LabelColor"]) ? $Format ["LabelColor"] : PIE_LABEL_COLOR_MANUAL;
    $LabelR = isset($Format ["LabelR"]) ? $Format ["LabelR"] : 0;
    $LabelG = isset($Format ["LabelG"]) ? $Format ["LabelG"] : 0;
    $LabelB = isset($Format ["LabelB"]) ? $Format ["LabelB"] : 0;
    $LabelAlpha = isset($Format ["LabelAlpha"]) ? $Format ["LabelAlpha"] : 100;
    $WriteValues = isset($Format ["WriteValues"]) ? $Format ["WriteValues"] : NULL; //PIE_VALUE_PERCENTAGE
    $ValuePosition = isset($Format ["ValuePosition"]) ? $Format ["ValuePosition"] : PIE_VALUE_INSIDE;
    $ValuePadding = isset($Format ["ValuePadding"]) ? $Format ["ValuePadding"] : 15;
    $ValueSuffix = isset($Format ["ValueSuffix"]) ? $Format ["ValueSuffix"] : "";
    $ValueR = isset($Format ["ValueR"]) ? $Format ["ValueR"] : 255;
    $ValueG = isset($Format ["ValueG"]) ? $Format ["ValueG"] : 255;
    $ValueB = isset($Format ["ValueB"]) ? $Format ["ValueB"] : 255;
    $ValueAlpha = isset($Format ["ValueAlpha"]) ? $Format ["ValueAlpha"] : 100;
    $RecordImageMap = isset($Format ["RecordImageMap"]) ? $Format ["RecordImageMap"] : FALSE;

    /* Error correction for overlaying rounded corners */
    if ($SkewFactor < .5) {
      $SkewFactor = .5;
    }

    /* Data Processing */
    $Data = $this->pDataObject->getData();
    $Palette = $this->pDataObject->getPalette();

    /* Do we have an abscissa serie defined? */
    if ($Data ["Abscissa"] == "") {
      return (PIE_NO_ABSCISSA);
    }

    /* Try to find the data serie */
    $DataSerie = "";
    foreach ($Data ["Series"] as $SerieName => $SerieData) 
     {
      if ($SerieName != $Data ["Abscissa"]) {
        $DataSerie = $SerieName;
      }
    }

    /* Do we have data to compute? */
    if ($DataSerie == "") {
      return (PIE_NO_DATASERIE);
    }

    /* Remove unused data */
    list($Data, $Palette) = $this->clean0Values($Data, $Palette, $DataSerie, $Data ["Abscissa"]);

    /* Compute the pie sum */
    $SerieSum = $this->pDataObject->getSum($DataSerie);

    /* Do we have data to draw? */
    if ($SerieSum == 0) {
      return (PIE_SUMISNULL);
    }

    /* Dump the real number of data to draw */
    $Values = array();
    foreach ($Data ["Series"][$DataSerie]["Data"] as $Key => $Value) 
     {
      if ($Value != 0) {
        $Values [] = $Value;
      }
    }

    /* Compute the wasted angular space between series */
    if (count($Values) == 1) {
      $WastedAngular = 0;
    }
    else {
      $WastedAngular = count($Values) * $DataGapAngle;
    }

    /* Compute the scale */
    $ScaleFactor = (360 - $WastedAngular) / $SerieSum;

    $RestoreShadow = $this->pChartObject->Shadow;
    if ($this->pChartObject->Shadow) {
      $this->pChartObject->Shadow = FALSE;
    }

    /* Draw the polygon pie elements */
    $Step = 360 / (2 * PI * $Radius);
    $Offset = 360;
    $ID = count($Values) -1;
    $Values = array_reverse($Values);
    $Slice = 0;
    $Slices = "";
    $SliceColors = "";
    $Visible = "";
    $SliceAngle = "";
    foreach ($Values as $Key => $Value) 
     {
      if (!isset($Palette [$ID]["R"])) {
        $Color = $this->pChartObject->getRandomColor();
        $Palette [$ID] = $Color;
        $this->pDataObject->savePalette($ID, $Color);
      }
      $Settings = array("R" => $Palette [$ID]["R"], "G" => $Palette [$ID]["G"], "B" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);

      $SliceColors [$Slice] = $Settings;

      $StartAngle = $Offset;
      $EndAngle = $Offset -($Value * $ScaleFactor);
      if ($EndAngle < 0) {
        $EndAngle = 0;
      }

      if ($StartAngle > 180) {
        $Visible [$Slice]["Start"] = TRUE;
      }
      else {
        $Visible [$Slice]["Start"] = TRUE;
      }
      if ($EndAngle < 180) {
        $Visible [$Slice]["End"] = FALSE;
      }
      else {
        $Visible [$Slice]["End"] = TRUE;
      }

      if ($DataGapAngle == 0) 
       {
        $X0 = $X;
        $Y0 = $Y;
      }
      else 
       {
        $Angle = ($EndAngle - $Offset) / 2 + $Offset;
        $X0 = cos(($Angle -90) * PI / 180) * $DataGapRadius + $X;
        $Y0 = sin(($Angle -90) * PI / 180) * $DataGapRadius * $SkewFactor + $Y;
      }
      $Slices [$Slice][] = $X0;
      $Slices [$Slice][] = $Y0;
      $SliceAngle [$Slice][] = 0;

      for ($i = $Offset; $i >= $EndAngle; $i = $i -$Step) 
       {
        $Xc = cos(($i -90) * PI / 180) * $Radius + $X;
        $Yc = sin(($i -90) * PI / 180) * $Radius * $SkewFactor + $Y;

        if (($SecondPass || $RestoreShadow) && ($i < 90)) {
          $Yc++;
        }
        if (($SecondPass || $RestoreShadow) && ($i > 90 && $i < 180)) {
          $Xc++;
        }
        if (($SecondPass || $RestoreShadow) && ($i > 180 && $i < 270)) {
          $Xc++;
        }
        if (($SecondPass || $RestoreShadow) && ($i >= 270)) {
          $Xc++;
          $Yc++;
        }

        $Slices [$Slice][] = $Xc;
        $Slices [$Slice][] = $Yc;
        $SliceAngle [$Slice][] = $i;
      }

      $Offset = $i - $DataGapAngle;
      $ID--;
      $Slice++;
    }

    /* Draw the bottom shadow if needed */
    if ($RestoreShadow && ($this->pChartObject->ShadowX != 0 || $this->pChartObject->ShadowY != 0)) 
     {
      foreach ($Slices as $SliceID => $Plots) 
       {
        $ShadowPie = array();
        for ($i = 0; $i < count($Plots); $i = $i + 2) 
         {
          $ShadowPie [] = $Plots [$i] + $this->pChartObject->ShadowX;
          $ShadowPie [] = $Plots [$i + 1] + $this->pChartObject->ShadowY;
        }

        $Settings = array("R" => $this->pChartObject->ShadowR, "G" => $this->pChartObject->ShadowG, "B" => $this->pChartObject->ShadowB, "Alpha" => $this->pChartObject->Shadowa, "NoBorder" => TRUE);
        $this->pChartObject->drawPolygon($ShadowPie, $Settings);
      }

      $Step = 360 / (2 * PI * $Radius);
      $Offset = 360;
      foreach ($Values as $Key => $Value) 
       {
        $EndAngle = $Offset -($Value * $ScaleFactor);
        if ($EndAngle < 0) {
          $EndAngle = 0;
        }

        for ($i = $Offset; $i >= $EndAngle; $i = $i -$Step) 
         {
          $Xc = cos(($i -90) * PI / 180) * $Radius + $X + $this->pChartObject->ShadowX;
          $Yc = sin(($i -90) * PI / 180) * $Radius * $SkewFactor + $Y + $this->pChartObject->ShadowY;

          $this->pChartObject->drawAntialiasPixel($Xc, $Yc, $Settings);
        }

        $Offset = $i - $DataGapAngle;
        $ID--;
      }
    }

    /* Draw the bottom pie splice */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $this->pChartObject->drawPolygon($Plots, $Settings);

      if ($SecondPass) 
       {
        $Settings = $SliceColors [$SliceID];
        if ($Border) 
         {
          $Settings ["R"] += 30;
          $Settings ["G"] += 30;
          $Settings ["B"] += 30;
        }

        if (isset($SliceAngle [$SliceID][1])) /* Empty error handling */
         {
          $Angle = $SliceAngle [$SliceID][1];
          $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
          $Yc = sin(($Angle -90) * PI / 180) * $Radius * $SkewFactor + $Y;
          $this->pChartObject->drawLine($Plots [0], $Plots [1], $Xc, $Yc, $Settings);

          $Angle = $SliceAngle [$SliceID][count($SliceAngle [$SliceID]) -1];
          $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
          $Yc = sin(($Angle -90) * PI / 180) * $Radius * $SkewFactor + $Y;
          $this->pChartObject->drawLine($Plots [0], $Plots [1], $Xc, $Yc, $Settings);
        }
      }
    }

    /* Draw the two vertical edges */
    $Slices = array_reverse($Slices);
    $SliceColors = array_reverse($SliceColors);
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["R"] += 10;
      $Settings ["G"] += 10;
      $Settings ["B"] += 10;
      $Settings ["NoBorder"] = TRUE;

      if ($Visible [$SliceID]["Start"] && isset($Plots [2])) /* Empty error handling */
       {
        $this->pChartObject->drawLine($Plots [2], $Plots [3], $Plots [2], $Plots [3] - $SliceHeight, array("R" => $Settings ["R"], "G" => $Settings ["G"], "B" => $Settings ["B"]));
        $Border = array();
        $Border [] = $Plots [0];
        $Border [] = $Plots [1];
        $Border [] = $Plots [0];
        $Border [] = $Plots [1] - $SliceHeight;
        $Border [] = $Plots [2];
        $Border [] = $Plots [3] - $SliceHeight;
        $Border [] = $Plots [2];
        $Border [] = $Plots [3];
        $this->pChartObject->drawPolygon($Border, $Settings);
      }
    }

    $Slices = array_reverse($Slices);
    $SliceColors = array_reverse($SliceColors);
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["R"] += 10;
      $Settings ["G"] += 10;
      $Settings ["B"] += 10;
      $Settings ["NoBorder"] = TRUE;
      if ($Visible [$SliceID]["End"]) 
       {
        $this->pChartObject->drawLine($Plots [count($Plots) -2], $Plots [count($Plots) -1], $Plots [count($Plots) -2], $Plots [count($Plots) -1] - $SliceHeight, array("R" => $Settings ["R"], "G" => $Settings ["G"], "B" => $Settings ["B"]));

        $Border = array();
        $Border [] = $Plots [0];
        $Border [] = $Plots [1];
        $Border [] = $Plots [0];
        $Border [] = $Plots [1] - $SliceHeight;
        $Border [] = $Plots [count($Plots) -2];
        $Border [] = $Plots [count($Plots) -1] - $SliceHeight;
        $Border [] = $Plots [count($Plots) -2];
        $Border [] = $Plots [count($Plots) -1];
        $this->pChartObject->drawPolygon($Border, $Settings);
      }
    }

    /* Draw the rounded edges */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["R"] += 10;
      $Settings ["G"] += 10;
      $Settings ["B"] += 10;
      $Settings ["NoBorder"] = TRUE;

      for ($j = 2; $j < count($Plots) -2; $j = $j + 2) 
       {
        $Angle = $SliceAngle [$SliceID][$j / 2];
        if ($Angle < 270 && $Angle > 90) 
         {
          $Border = array();
          $Border [] = $Plots [$j];
          $Border [] = $Plots [$j + 1];
          $Border [] = $Plots [$j + 2];
          $Border [] = $Plots [$j + 3];
          $Border [] = $Plots [$j + 2];
          $Border [] = $Plots [$j + 3] - $SliceHeight;
          $Border [] = $Plots [$j];
          $Border [] = $Plots [$j + 1] - $SliceHeight;
          $this->pChartObject->drawPolygon($Border, $Settings);
        }
      }

      if ($SecondPass) 
       {
        $Settings = $SliceColors [$SliceID];
        if ($Border) 
         {
          $Settings ["R"] += 30;
          $Settings ["G"] += 30;
          $Settings ["B"] += 30;
        }

        if (isset($SliceAngle [$SliceID][1])) /* Empty error handling */
         {
          $Angle = $SliceAngle [$SliceID][1];
          if ($Angle < 270 && $Angle > 90) 
           {
            $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
            $Yc = sin(($Angle -90) * PI / 180) * $Radius * $SkewFactor + $Y;
            $this->pChartObject->drawLine($Xc, $Yc, $Xc, $Yc -$SliceHeight, $Settings);
          }
        }

        $Angle = $SliceAngle [$SliceID][count($SliceAngle [$SliceID]) -1];
        if ($Angle < 270 && $Angle > 90) 
         {
          $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
          $Yc = sin(($Angle -90) * PI / 180) * $Radius * $SkewFactor + $Y;
          $this->pChartObject->drawLine($Xc, $Yc, $Xc, $Yc -$SliceHeight, $Settings);
        }

        if (isset($SliceAngle [$SliceID][1]) && $SliceAngle [$SliceID][1] > 270 && $SliceAngle [$SliceID][count($SliceAngle [$SliceID]) -1] < 270) 
         {
          $Xc = cos((270 -90) * PI / 180) * $Radius + $X;
          $Yc = sin((270 -90) * PI / 180) * $Radius * $SkewFactor + $Y;
          $this->pChartObject->drawLine($Xc, $Yc, $Xc, $Yc -$SliceHeight, $Settings);
        }

        if (isset($SliceAngle [$SliceID][1]) && $SliceAngle [$SliceID][1] > 90 && $SliceAngle [$SliceID][count($SliceAngle [$SliceID]) -1] < 90) 
         {
          $Xc = cos((0) * PI / 180) * $Radius + $X;
          $Yc = sin((0) * PI / 180) * $Radius * $SkewFactor + $Y;
          $this->pChartObject->drawLine($Xc, $Yc, $Xc, $Yc -$SliceHeight, $Settings);
        }

      }
    }

    /* Draw the top splice */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["R"] += 20;
      $Settings ["G"] += 20;
      $Settings ["B"] += 20;

      $Top = array();
      for ($j = 0; $j < count($Plots); $j = $j + 2) {
        $Top [] = $Plots [$j];
        $Top [] = $Plots [$j + 1] - $SliceHeight;
      }
      $this->pChartObject->drawPolygon($Top, $Settings);

      if ($RecordImageMap && !$Shadow) {
        $this->pChartObject->addToImageMap("POLY", $this->arraySerialize($Top), $this->pChartObject->toHTMLColor($Settings ["R"], $Settings ["G"], $Settings ["B"]), $Data ["Series"][$Data ["Abscissa"]]["Data"][count($Slices) -$SliceID -1], $Values [$SliceID]);
      }
    }


    /* Second pass to smooth the angles */
    if ($SecondPass) 
     {
      $Step = 360 / (2 * PI * $Radius);
      $Offset = 360;
      $ID = count($Values) -1;
      foreach ($Values as $Key => $Value) 
       {
        $FirstPoint = TRUE;
        if ($Shadow) {
          $Settings = array("R" => $this->pChartObject->ShadowR, "G" => $this->pChartObject->ShadowG, "B" => $this->pChartObject->ShadowB, "Alpha" => $this->pChartObject->Shadowa);
        }
        else 
         {
          if ($Border) 
           {
            $Settings = array("R" => $Palette [$ID]["R"] + 30, "G" => $Palette [$ID]["G"] + 30, "B" => $Palette [$ID]["B"] + 30, "Alpha" => $Palette [$ID]["Alpha"]);
          }
          else {
            $Settings = array("R" => $Palette [$ID]["R"], "G" => $Palette [$ID]["G"], "B" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
          }
        }

        $EndAngle = $Offset -($Value * $ScaleFactor);
        if ($EndAngle < 0) {
          $EndAngle = 0;
        }

        if ($DataGapAngle == 0) 
         {
          $X0 = $X;
          $Y0 = $Y - $SliceHeight;
        }
        else 
         {
          $Angle = ($EndAngle - $Offset) / 2 + $Offset;
          $X0 = cos(($Angle -90) * PI / 180) * $DataGapRadius + $X;
          $Y0 = sin(($Angle -90) * PI / 180) * $DataGapRadius * $SkewFactor + $Y - $SliceHeight;
        }
        $Plots [] = $X0;
        $Plots [] = $Y0;

        for ($i = $Offset; $i >= $EndAngle; $i = $i -$Step) 
         {
          $Xc = cos(($i -90) * PI / 180) * $Radius + $X;
          $Yc = sin(($i -90) * PI / 180) * $Radius * $SkewFactor + $Y - $SliceHeight;

          if ($FirstPoint) {
            $this->pChartObject->drawLine($Xc, $Yc, $X0, $Y0, $Settings);
          }
          {              $FirstPoint = FALSE;          }

          $this->pChartObject->drawAntialiasPixel($Xc, $Yc, $Settings);
          if ($i < 270 && $i > 90) {
            $this->pChartObject->drawAntialiasPixel($Xc, $Yc + $SliceHeight, $Settings);
          }
        }
        $this->pChartObject->drawLine($Xc, $Yc, $X0, $Y0, $Settings);

        $Offset = $i - $DataGapAngle;
        $ID--;
      }
    }

    if ($WriteValues != NULL) 
     {
      $Step = 360 / (2 * PI * $Radius);
      $Offset = 360;
      $ID = count($Values) -1;
      $Settings = array("Align" => TEXT_ALIGN_MIDDLEMIDDLE, "R" => $ValueR, "G" => $ValueG, "B" => $ValueB, "Alpha" => $ValueAlpha);
      foreach ($Values as $Key => $Value) 
       {
        $EndAngle = $Offset -($Value * $ScaleFactor);
        if ($EndAngle < 0) {
          $EndAngle = 0;
        }

        $Angle = ($EndAngle - $Offset) / 2 + $Offset;

        if ($ValuePosition == PIE_VALUE_OUTSIDE) 
         {
          $Xc = cos(($Angle -90) * PI / 180) * ($Radius + $ValuePadding) + $X;
          $Yc = sin(($Angle -90) * PI / 180) * (($Radius * $SkewFactor) + $ValuePadding) + $Y - $SliceHeight;
        }
        else 
         {
          $Xc = cos(($Angle -90) * PI / 180) * ($Radius) / 2 + $X;
          $Yc = sin(($Angle -90) * PI / 180) * ($Radius * $SkewFactor) / 2 + $Y - $SliceHeight;
        }

        if ($WriteValues == PIE_VALUE_PERCENTAGE) {
          $Display = round((100 / $SerieSum) * $Value, $Precision) . "%";
        }
        elseif ($WriteValues == PIE_VALUE_NATURAL) {
          $Display = $Value . $ValueSuffix;
        }

        $this->pChartObject->drawText($Xc, $Yc, $Display, $Settings);

        $Offset = $EndAngle - $DataGapAngle;
        $ID--;
      }
    }

    if ($DrawLabels) 
     {
      $Step = 360 / (2 * PI * $Radius);
      $Offset = 360;
      $ID = count($Values) -1;
      foreach ($Values as $Key => $Value) 
       {
        if ($LabelColor == PIE_LABEL_COLOR_AUTO) 
         {
          $Settings = array("FillR" => $Palette [$ID]["R"], "FillG" => $Palette [$ID]["G"], "FillB" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
        }
        else 
         {
          $Settings = array("FillR" => $LabelR, "FillG" => $LabelG, "FillB" => $LabelB, "Alpha" => $LabelAlpha);
        }

        $EndAngle = $Offset -($Value * $ScaleFactor);
        if ($EndAngle < 0) {
          $EndAngle = 0;
        }

        $Angle = ($EndAngle - $Offset) / 2 + $Offset;
        $Xc = cos(($Angle -90) * PI / 180) * $Radius + $X;
        $Yc = sin(($Angle -90) * PI / 180) * $Radius * $SkewFactor + $Y - $SliceHeight;

        if (isset($Data ["Series"][$Data ["Abscissa"]]["Data"][$ID])) 
         {
          $Label = $Data ["Series"][$Data ["Abscissa"]]["Data"][$ID];

          if ($LabelStacked) {
            $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, TRUE, $X, $Y, $Radius, TRUE);
          }
          else {
            $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, FALSE);
          }
        }

        $Offset = $EndAngle - $DataGapAngle;
        $ID--;
      }
    }

    if ($DrawLabels && $LabelStacked) {
      $this->writeShiftedLabels();
    }

    $this->pChartObject->Shadow = $RestoreShadow;

    return (PIE_RENDERED);
  }

  /* Draw the legend of pie chart */
  function drawPieLegend($X, $Y, $Format = "") 
   {
    $FontName = isset($Format ["FontName"]) ? $Format ["FontName"] : $this->pChartObject->FontName;
    $FontSize = isset($Format ["FontSize"]) ? $Format ["FontSize"] : $this->pChartObject->FontSize;
    $FontR = isset($Format ["FontR"]) ? $Format ["FontR"] : $this->pChartObject->FontColorR;
    $FontG = isset($Format ["FontG"]) ? $Format ["FontG"] : $this->pChartObject->FontColorG;
    $FontB = isset($Format ["FontB"]) ? $Format ["FontB"] : $this->pChartObject->FontColorB;
    $BoxSize = isset($Format ["BoxSize"]) ? $Format ["BoxSize"] : 5;
    $Margin = isset($Format ["Margin"]) ? $Format ["Margin"] : 5;
    $R = isset($Format ["R"]) ? $Format ["R"] : 200;
    $G = isset($Format ["G"]) ? $Format ["G"] : 200;
    $B = isset($Format ["B"]) ? $Format ["B"] : 200;
    $Alpha = isset($Format ["Alpha"]) ? $Format ["Alpha"] : 100;
    $BorderR = isset($Format ["BorderR"]) ? $Format ["BorderR"] : 255;
    $BorderG = isset($Format ["BorderG"]) ? $Format ["BorderG"] : 255;
    $BorderB = isset($Format ["BorderB"]) ? $Format ["BorderB"] : 255;
    $Surrounding = isset($Format ["Surrounding"]) ? $Format ["Surrounding"] : NULL;
    $Style = isset($Format ["Style"]) ? $Format ["Style"] : LEGEND_ROUND;
    $Mode = isset($Format ["Mode"]) ? $Format ["Mode"] : LEGEND_VERTICAL;

    if ($Surrounding != NULL) {
      $BorderR = $R + $Surrounding;
      $BorderG = $G + $Surrounding;
      $BorderB = $B + $Surrounding;
    }

    $YStep = max($this->pChartObject->FontSize, $BoxSize) + 5;
    $XStep = $BoxSize + 5;

    /* Data Processing */
    $Data = $this->pDataObject->getData();
    $Palette = $this->pDataObject->getPalette();

    /* Do we have an abscissa serie defined? */
    if ($Data ["Abscissa"] == "") {
      return (PIE_NO_ABSCISSA);
    }

    $Boundaries = "";
    $Boundaries ["L"] = $X;
    $Boundaries ["T"] = $Y;
    $Boundaries ["R"] = 0;
    $Boundaries ["B"] = 0;
    $vY = $Y;
    $vX = $X;
    foreach ($Data ["Series"][$Data ["Abscissa"]]["Data"] as $Key => $Value) 
     {
      $BoxArray = $this->pChartObject->getTextBox($vX + $BoxSize + 4, $vY + $BoxSize / 2, $FontName, $FontSize, 0, $Value);

      if ($Mode == LEGEND_VERTICAL) 
       {
        if ($Boundaries ["T"] > $BoxArray [2]["Y"] + $BoxSize / 2) {
          $Boundaries ["T"] = $BoxArray [2]["Y"] + $BoxSize / 2;
        }
        if ($Boundaries ["R"] < $BoxArray [1]["X"] + 2) {
          $Boundaries ["R"] = $BoxArray [1]["X"] + 2;
        }
        if ($Boundaries ["B"] < $BoxArray [1]["Y"] + 2 + $BoxSize / 2) {
          $Boundaries ["B"] = $BoxArray [1]["Y"] + 2 + $BoxSize / 2;
        }
        $vY = $vY + $YStep;
      }
      elseif ($Mode == LEGEND_HORIZONTAL) 
       {
        if ($Boundaries ["T"] > $BoxArray [2]["Y"] + $BoxSize / 2) {
          $Boundaries ["T"] = $BoxArray [2]["Y"] + $BoxSize / 2;
        }
        if ($Boundaries ["R"] < $BoxArray [1]["X"] + 2) {
          $Boundaries ["R"] = $BoxArray [1]["X"] + 2;
        }
        if ($Boundaries ["B"] < $BoxArray [1]["Y"] + 2 + $BoxSize / 2) {
          $Boundaries ["B"] = $BoxArray [1]["Y"] + 2 + $BoxSize / 2;
        }
        $vX = $Boundaries ["R"] + $XStep;
      }
    }
    $vY = $vY -$YStep;
    $vX = $vX -$XStep;

    $TopOffset = $Y - $Boundaries ["T"];
    if ($Boundaries ["B"] -($vY + $BoxSize) < $TopOffset) {
      $Boundaries ["B"] = $vY + $BoxSize + $TopOffset;
    }

    if ($Style == LEGEND_ROUND) {
      $this->pChartObject->drawRoundedFilledRectangle($Boundaries ["L"] -$Margin, $Boundaries ["T"] -$Margin, $Boundaries ["R"] + $Margin, $Boundaries ["B"] + $Margin, $Margin, array("R" => $R, "G" => $G, "B" => $B, "Alpha" => $Alpha, "BorderR" => $BorderR, "BorderG" => $BorderG, "BorderB" => $BorderB));
    }
    elseif ($Style == LEGEND_BOX) {
      $this->pChartObject->drawFilledRectangle($Boundaries ["L"] -$Margin, $Boundaries ["T"] -$Margin, $Boundaries ["R"] + $Margin, $Boundaries ["B"] + $Margin, array("R" => $R, "G" => $G, "B" => $B, "Alpha" => $Alpha, "BorderR" => $BorderR, "BorderG" => $BorderG, "BorderB" => $BorderB));
    }

    $RestoreShadow = $this->pChartObject->Shadow;
    $this->pChartObject->Shadow = FALSE;
    foreach ($Data ["Series"][$Data ["Abscissa"]]["Data"] as $Key => $Value) 
     {
      $R = $Palette [$Key]["R"];
      $G = $Palette [$Key]["G"];
      $B = $Palette [$Key]["B"];

      $this->pChartObject->drawFilledRectangle($X + 1, $Y + 1, $X + $BoxSize + 1, $Y + $BoxSize + 1, array("R" => 0, "G" => 0, "B" => 0, "Alpha" => 20));
      $this->pChartObject->drawFilledRectangle($X, $Y, $X + $BoxSize, $Y + $BoxSize, array("R" => $R, "G" => $G, "B" => $B, "Surrounding" => 20));
      if ($Mode == LEGEND_VERTICAL) 
       {
        $this->pChartObject->drawText($X + $BoxSize + 4, $Y + $BoxSize / 2, $Value, array("R" => $FontR, "G" => $FontG, "B" => $FontB, "Align" => TEXT_ALIGN_MIDDLELEFT, "FontName" => $FontName, "FontSize" => $FontSize));
        $Y = $Y + $YStep;
      }
      elseif ($Mode == LEGEND_HORIZONTAL) 
       {
        $BoxArray = $this->pChartObject->drawText($X + $BoxSize + 4, $Y + $BoxSize / 2, $Value, array("R" => $FontR, "G" => $FontG, "B" => $FontB, "Align" => TEXT_ALIGN_MIDDLELEFT, "FontName" => $FontName, "FontSize" => $FontSize));
        $X = $BoxArray [1]["X"] + 2 + $XStep;
      }
    }

    $this->Shadow = $RestoreShadow;
  }

  /* Set the color of the specified slice */
  function setSliceColor($SliceID, $Format = "") 
   {
    $R = isset($Format ["R"]) ? $Format ["R"] : 0;
    $G = isset($Format ["G"]) ? $Format ["G"] : 0;
    $B = isset($Format ["B"]) ? $Format ["B"] : 0;
    $Alpha = isset($Format ["Alpha"]) ? $Format ["Alpha"] : 100;

    $this->pDataObject->Palette [$SliceID]["R"] = $R;
    $this->pDataObject->Palette [$SliceID]["G"] = $G;
    $this->pDataObject->Palette [$SliceID]["B"] = $B;
    $this->pDataObject->Palette [$SliceID]["Alpha"] = $Alpha;
  }

  /* Internally used compute the label positions */
  function writePieLabel($X, $Y, $Label, $Angle, $Settings, $Stacked, $Xc = 0, $Yc = 0, $Radius = 0, $Reversed = FALSE) 
   {
    $LabelOffset = 30;
    $FontName = $this->pChartObject->FontName;
    $FontSize = $this->pChartObject->FontSize;

    if (!$Stacked) 
     {
      $Settings ["Angle"] = 360 -$Angle;
      $Settings ["Length"] = 25;
      $Settings ["Size"] = 8;

      $this->pChartObject->drawArrowLabel($X, $Y, " " . $Label . " ", $Settings);
    }
    else 
     {
      $X2 = cos(deg2rad($Angle -90)) * 20 + $X;
      $Y2 = sin(deg2rad($Angle -90)) * 20 + $Y;

      $TxtPos = $this->pChartObject->getTextBox($X, $Y, $FontName, $FontSize, 0, $Label);
      $Height = $TxtPos [0]["Y"] - $TxtPos [2]["Y"];
      $YTop = $Y2 - $Height / 2 - 2;
      $YBottom = $Y2 + $Height / 2 + 2;

      if ($this->LabelPos != "") 
       {
        $Done = FALSE;
        foreach ($this->LabelPos as $Key => $Settings) 
         {
          if (!$Done) 
           {
            if ($Angle <= 90 && (($YTop >= $Settings ["YTop"] && $YTop <= $Settings ["YBottom"]) || ($YBottom >= $Settings ["YTop"] && $YBottom <= $Settings ["YBottom"]))) 
             {
              $this->shift(0, 180, -($Height + 2), $Reversed);
              $Done = TRUE;
            }
            if ($Angle > 90 && $Angle <= 180 && (($YTop >= $Settings ["YTop"] && $YTop <= $Settings ["YBottom"]) || ($YBottom >= $Settings ["YTop"] && $YBottom <= $Settings ["YBottom"]))) 
             {
              $this->shift(0, 180, -($Height + 2), $Reversed);
              $Done = TRUE;
            }
            if ($Angle > 180 && $Angle <= 270 && (($YTop >= $Settings ["YTop"] && $YTop <= $Settings ["YBottom"]) || ($YBottom >= $Settings ["YTop"] && $YBottom <= $Settings ["YBottom"]))) 
             {
              $this->shift(180, 360, ($Height + 2), $Reversed);
              $Done = TRUE;
            }
            if ($Angle > 270 && $Angle <= 360 && (($YTop >= $Settings ["YTop"] && $YTop <= $Settings ["YBottom"]) || ($YBottom >= $Settings ["YTop"] && $YBottom <= $Settings ["YBottom"]))) 
             {
              $this->shift(180, 360, ($Height + 2), $Reversed);
              $Done = TRUE;
            }
          }
        }
      }

      $LabelSettings = array("YTop" => $YTop, "YBottom" => $YBottom, "Label" => $Label, "Angle" => $Angle, "X1" => $X, "Y1" => $Y, "X2" => $X2, "Y2" => $Y2);
      if ($Angle <= 180) {
        $LabelSettings ["X3"] = $Xc + $Radius + $LabelOffset;
      }
      if ($Angle > 180) {
        $LabelSettings ["X3"] = $Xc -$Radius -$LabelOffset;
      }
      $this->LabelPos [] = $LabelSettings;
    }
  }

  /* Internally used to shift label positions */
  function shift($StartAngle, $EndAngle, $Offset, $Reversed) 
   {
    if ($Reversed) {
      $Offset = -$Offset;
    }
    foreach ($this->LabelPos as $Key => $Settings) 
     {
      if ($Settings ["Angle"] > $StartAngle && $Settings ["Angle"] <= $EndAngle) {
        $this->LabelPos [$Key]["YTop"] = $Settings ["YTop"] + $Offset;
        $this->LabelPos [$Key]["YBottom"] = $Settings ["YBottom"] + $Offset;
        $this->LabelPos [$Key]["Y2"] = $Settings ["Y2"] + $Offset;
      }
    }
  }

  /* Internally used to write the re-computed labels */
  function writeShiftedLabels() 
   {
    if ($this->LabelPos == "") {
      return (0);
    }
    foreach ($this->LabelPos as $Key => $Settings) 
     {
      $X1 = $Settings ["X1"];
      $Y1 = $Settings ["Y1"];
      $X2 = $Settings ["X2"];
      $Y2 = $Settings ["Y2"];
      $X3 = $Settings ["X3"];
      $Angle = $Settings ["Angle"];
      $Label = $Settings ["Label"];

      $this->pChartObject->drawArrow($X2, $Y2, $X1, $Y1, array("Size" => 8));
      if ($Angle <= 180) 
       {
        $this->pChartObject->drawLine($X2, $Y2, $X3, $Y2);
        $this->pChartObject->drawText($X3 + 2, $Y2, $Label, array("Align" => TEXT_ALIGN_MIDDLELEFT));
      }
      else 
       {
        $this->pChartObject->drawLine($X2, $Y2, $X3, $Y2);
        $this->pChartObject->drawText($X3 -2, $Y2, $Label, array("Align" => TEXT_ALIGN_MIDDLERIGHT));
      }
    }
  }

  /* Draw a ring chart */
  function draw2DRing($X, $Y, $Format = "") 
   {
    $OuterRadius = isset($Format ["Radius"]) ? $Format ["Radius"] : 60;
    $Precision = isset($Format ["Precision"]) ? $Format ["Precision"] : 0;
    $InnerRadius = isset($Format ["Radius"]) ? $Format ["Radius"] : 30;
    $Border = isset($Format ["Border"]) ? $Format ["Border"] : FALSE;
    $BorderR = isset($Format ["BorderR"]) ? $Format ["BorderR"] : 255;
    $BorderG = isset($Format ["BorderG"]) ? $Format ["BorderG"] : 255;
    $BorderB = isset($Format ["BorderB"]) ? $Format ["BorderB"] : 255;
    $BorderAlpha = isset($Format ["BorderAlpha"]) ? $Format ["BorderAlpha"] : 100;
    $Shadow = isset($Format ["Shadow"]) ? $Format ["Shadow"] : FALSE;
    $DrawLabels = isset($Format ["DrawLabels"]) ? $Format ["DrawLabels"] : FALSE;
    $LabelStacked = isset($Format ["LabelStacked"]) ? $Format ["LabelStacked"] : FALSE;
    $LabelColor = isset($Format ["LabelColor"]) ? $Format ["LabelColor"] : PIE_LABEL_COLOR_MANUAL;
    $LabelR = isset($Format ["LabelR"]) ? $Format ["LabelR"] : 0;
    $LabelG = isset($Format ["LabelG"]) ? $Format ["LabelG"] : 0;
    $LabelB = isset($Format ["LabelB"]) ? $Format ["LabelB"] : 0;
    $LabelAlpha = isset($Format ["LabelAlpha"]) ? $Format ["LabelAlpha"] : 100;
    $WriteValues = isset($Format ["WriteValues"]) ? $Format ["WriteValues"] : NULL; //PIE_VALUE_PERCENTAGE
    $ValuePadding = isset($Format ["ValuePadding"]) ? $Format ["ValuePadding"] : 5;
    $ValuePosition = isset($Format ["ValuePosition"]) ? $Format ["ValuePosition"] : PIE_VALUE_OUTSIDE;
    $ValueSuffix = isset($Format ["ValueSuffix"]) ? $Format ["ValueSuffix"] : "";
    $ValueR = isset($Format ["ValueR"]) ? $Format ["ValueR"] : 255;
    $ValueG = isset($Format ["ValueG"]) ? $Format ["ValueG"] : 255;
    $ValueB = isset($Format ["ValueB"]) ? $Format ["ValueB"] : 255;
    $ValueAlpha = isset($Format ["ValueAlpha"]) ? $Format ["ValueAlpha"] : 100;
    $RecordImageMap = isset($Format ["RecordImageMap"]) ? $Format ["RecordImageMap"] : FALSE;

    /* Data Processing */
    $Data = $this->pDataObject->getData();
    $Palette = $this->pDataObject->getPalette();

    /* Do we have an abscissa serie defined? */
    if ($Data ["Abscissa"] == "") {
      return (PIE_NO_ABSCISSA);
    }

    /* Try to find the data serie */
    $DataSerie = "";
    foreach ($Data ["Series"] as $SerieName => $SerieData) 
     {
      if ($SerieName != $Data ["Abscissa"]) {
        $DataSerie = $SerieName;
      }
    }

    /* Do we have data to compute? */
    if ($DataSerie == "") {
      return (PIE_NO_DATASERIE);
    }

    /* Remove unused data */
    list($Data, $Palette) = $this->clean0Values($Data, $Palette, $DataSerie, $Data ["Abscissa"]);

    /* Compute the pie sum */
    $SerieSum = $this->pDataObject->getSum($DataSerie);

    /* Do we have data to draw? */
    if ($SerieSum == 0) {
      return (PIE_SUMISNULL);
    }

    /* Dump the real number of data to draw */
    $Values = array();
    foreach ($Data ["Series"][$DataSerie]["Data"] as $Key => $Value) 
     {
      if ($Value != 0) {
        $Values [] = $Value;
      }
    }

    /* Compute the wasted angular space between series */
    if (count($Values) == 1) {
      $WastedAngular = 0;
    }
    else {
      $WastedAngular = 0;
    } // count($Values)

    /* Compute the scale */
    $ScaleFactor = (360 - $WastedAngular) / $SerieSum;

    $RestoreShadow = $this->pChartObject->Shadow;
    if ($this->pChartObject->Shadow) 
     {
      $this->pChartObject->Shadow = FALSE;

      $ShadowFormat = $Format;
      $ShadowFormat ["Shadow"] = TRUE;
      $this->draw2DRing($X + $this->pChartObject->ShadowX, $Y + $this->pChartObject->ShadowY, $ShadowFormat);
    }

    /* Draw the polygon pie elements */
    $Step = 360 / (2 * PI * $OuterRadius);
    $Offset = 0;
    $ID = 0;
    foreach ($Values as $Key => $Value) 
     {
      if ($Shadow) 
       {
        $Settings = array("R" => $this->pChartObject->ShadowR, "G" => $this->pChartObject->ShadowG, "B" => $this->pChartObject->ShadowB, "Alpha" => $this->pChartObject->Shadowa);
        $BorderColor = $Settings;
      }
      else 
       {
        if (!isset($Palette [$ID]["R"])) {
          $Color = $this->pChartObject->getRandomColor();
          $Palette [$ID] = $Color;
          $this->pDataObject->savePalette($ID, $Color);
        }
        $Settings = array("R" => $Palette [$ID]["R"], "G" => $Palette [$ID]["G"], "B" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);

        if ($Border) {
          $BorderColor = array("R" => $BorderR, "G" => $BorderG, "B" => $BorderB, "Alpha" => $BorderAlpha);
        }
        else {
          $BorderColor = $Settings;
        }
      }

      $Plots = array();
      $Boundaries = array();
      $AAPixels = array();
      $EndAngle = $Offset + ($Value * $ScaleFactor);
      if ($EndAngle > 360) {
        $EndAngle = 360;
      }
      for ($i = $Offset; $i <= $EndAngle; $i = $i + $Step) 
       {
        $Xc = cos(($i -90) * PI / 180) * $OuterRadius + $X;
        $Yc = sin(($i -90) * PI / 180) * $OuterRadius + $Y;

        if (!isset($Boundaries [0]["X1"])) {
          $Boundaries [0]["X1"] = $Xc;
          $Boundaries [0]["Y1"] = $Yc;
        }
        $AAPixels [] = array($Xc, $Yc);

        if ($i < 90) {
          $Yc++;
        }
        if ($i > 180 && $i < 270) {
          $Xc++;
        }
        if ($i >= 270) {
          $Xc++;
          $Yc++;
        }

        $Plots [] = $Xc;
        $Plots [] = $Yc;
      }
      $Boundaries [1]["X1"] = $Xc;
      $Boundaries [1]["Y1"] = $Yc;
      $Lasti = $EndAngle;

      for ($i = $EndAngle; $i >= $Offset; $i = $i -$Step) 
       {
        $Xc = cos(($i -90) * PI / 180) * ($InnerRadius -1) + $X;
        $Yc = sin(($i -90) * PI / 180) * ($InnerRadius -1) + $Y;

        if (!isset($Boundaries [1]["X2"])) {
          $Boundaries [1]["X2"] = $Xc;
          $Boundaries [1]["Y2"] = $Yc;
        }
        $AAPixels [] = array($Xc, $Yc);

        $Xc = cos(($i -90) * PI / 180) * $InnerRadius + $X;
        $Yc = sin(($i -90) * PI / 180) * $InnerRadius + $Y;

        if ($i < 90) {
          $Yc++;
        }
        if ($i > 180 && $i < 270) {
          $Xc++;
        }
        if ($i >= 270) {
          $Xc++;
          $Yc++;
        }

        $Plots [] = $Xc;
        $Plots [] = $Yc;
      }
      $Boundaries [0]["X2"] = $Xc;
      $Boundaries [0]["Y2"] = $Yc;

      /* Draw the polygon */
      $this->pChartObject->drawPolygon($Plots, $Settings);
      if ($RecordImageMap && !$Shadow) {
        $this->pChartObject->addToImageMap("POLY", $this->arraySerialize($Plots), $this->pChartObject->toHTMLColor($Palette [$ID]["R"], $Palette [$ID]["G"], $Palette [$ID]["B"]), $Data ["Series"][$Data ["Abscissa"]]["Data"][$Key], $Value);
      }

      /* Smooth the edges using AA */
      foreach ($AAPixels as $iKey => $Pos) {
        $this->pChartObject->drawAntialiasPixel($Pos [0], $Pos [1], $BorderColor);
      }
      $this->pChartObject->drawLine($Boundaries [0]["X1"], $Boundaries [0]["Y1"], $Boundaries [0]["X2"], $Boundaries [0]["Y2"], $BorderColor);
      $this->pChartObject->drawLine($Boundaries [1]["X1"], $Boundaries [1]["Y1"], $Boundaries [1]["X2"], $Boundaries [1]["Y2"], $BorderColor);

      if ($DrawLabels && !$Shadow) 
       {
        if ($LabelColor == PIE_LABEL_COLOR_AUTO) 
         {
          $Settings = array("FillR" => $Palette [$ID]["R"], "FillG" => $Palette [$ID]["G"], "FillB" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
        }
        else 
         {
          $Settings = array("FillR" => $LabelR, "FillG" => $LabelG, "FillB" => $LabelB, "Alpha" => $LabelAlpha);
        }

        $Angle = ($EndAngle - $Offset) / 2 + $Offset;
        $Xc = cos(($Angle -90) * PI / 180) * $OuterRadius + $X;
        $Yc = sin(($Angle -90) * PI / 180) * $OuterRadius + $Y;

        $Label = $Data ["Series"][$Data ["Abscissa"]]["Data"][$Key];

        if ($LabelStacked) {
          $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, TRUE, $X, $Y, $OuterRadius);
        }
        else {
          $this->writePieLabel($Xc, $Yc, $Label, $Angle, $Settings, FALSE);
        }
      }

      $Offset = $Lasti;
      $ID++;
    }

    if ($DrawLabels && $LabelStacked) {
      $this->writeShiftedLabels();
    }

    if ($WriteValues && !$Shadow) 
     {
      $Step = 360 / (2 * PI * $OuterRadius);
      $Offset = 0;
      foreach ($Values as $Key => $Value) 
       {
        $EndAngle = $Offset + ($Value * $ScaleFactor);
        if ($EndAngle > 360) {
          $EndAngle = 360;
        }

        $Angle = $Offset + ($Value * $ScaleFactor) / 2;
        if ($ValuePosition == PIE_VALUE_OUTSIDE) 
         {
          $Xc = cos(($Angle -90) * PI / 180) * ($OuterRadius + $ValuePadding) + $X;
          $Yc = sin(($Angle -90) * PI / 180) * ($OuterRadius + $ValuePadding) + $Y;
          if ($Angle >= 0 && $Angle <= 90) {
            $Align = TEXT_ALIGN_BOTTOMLEFT;
          }
          if ($Angle > 90 && $Angle <= 180) {
            $Align = TEXT_ALIGN_TOPLEFT;
          }
          if ($Angle > 180 && $Angle <= 270) {
            $Align = TEXT_ALIGN_TOPRIGHT;
          }
          if ($Angle > 270) {
            $Align = TEXT_ALIGN_BOTTOMRIGHT;
          }
        }
        else 
         {
          $Xc = cos(($Angle -90) * PI / 180) * (($OuterRadius -$InnerRadius) / 2 + $InnerRadius) + $X;
          $Yc = sin(($Angle -90) * PI / 180) * (($OuterRadius -$InnerRadius) / 2 + $InnerRadius) + $Y;
          $Align = TEXT_ALIGN_MIDDLEMIDDLE;
        }

        if ($WriteValues == PIE_VALUE_PERCENTAGE) {
          $Display = round((100 / $SerieSum) * $Value, $Precision) . "%";
        }
        elseif ($WriteValues == PIE_VALUE_NATURAL) {
          $Display = $Value . $ValueSuffix;
        }
        else {
          $Label = "";
        }

        $this->pChartObject->drawText($Xc, $Yc, $Display, array("Align" => $Align, "R" => $ValueR, "G" => $ValueG, "B" => $ValueB));
        $Offset = $EndAngle;
      }
    }

    $this->pChartObject->Shadow = $RestoreShadow;

    return (PIE_RENDERED);
  }

  /* Draw a 3D ring chart */
  function draw3DRing($X, $Y, $Format = "") 
   {
    $OuterRadius = isset($Format ["OuterRadius"]) ? $Format ["OuterRadius"] : 100;
    $Precision = isset($Format ["Precision"]) ? $Format ["Precision"] : 0;
    $InnerRadius = isset($Format ["InnerRadius"]) ? $Format ["InnerRadius"] : 30;
    $SkewFactor = isset($Format ["SkewFactor"]) ? $Format ["SkewFactor"] : .6;
    $SliceHeight = isset($Format ["SliceHeight"]) ? $Format ["SliceHeight"] : 10;
    $DataGapAngle = isset($Format ["DataGapAngle"]) ? $Format ["DataGapAngle"] : 10;
    $DataGapRadius = isset($Format ["DataGapRadius"]) ? $Format ["DataGapRadius"] : 10;
    $Border = isset($Format ["Border"]) ? $Format ["Border"] : FALSE;
    $Shadow = isset($Format ["Shadow"]) ? $Format ["Shadow"] : FALSE;
    $DrawLabels = isset($Format ["DrawLabels"]) ? $Format ["DrawLabels"] : FALSE;
    $LabelStacked = isset($Format ["LabelStacked"]) ? $Format ["LabelStacked"] : FALSE;
    $LabelColor = isset($Format ["LabelColor"]) ? $Format ["LabelColor"] : PIE_LABEL_COLOR_MANUAL;
    $LabelR = isset($Format ["LabelR"]) ? $Format ["LabelR"] : 0;
    $LabelG = isset($Format ["LabelG"]) ? $Format ["LabelG"] : 0;
    $LabelB = isset($Format ["LabelB"]) ? $Format ["LabelB"] : 0;
    $LabelAlpha = isset($Format ["LabelAlpha"]) ? $Format ["LabelAlpha"] : 100;
    $Cf = isset($Format ["Cf"]) ? $Format ["Cf"] : 20;
    $WriteValues = isset($Format ["WriteValues"]) ? $Format ["WriteValues"] : PIE_VALUE_NATURAL;
    $ValuePadding = isset($Format ["ValuePadding"]) ? $Format ["ValuePadding"] : $SliceHeight + 15;
    $ValuePosition = isset($Format ["ValuePosition"]) ? $Format ["ValuePosition"] : PIE_VALUE_OUTSIDE;
    $ValueSuffix = isset($Format ["ValueSuffix"]) ? $Format ["ValueSuffix"] : "";
    $ValueR = isset($Format ["ValueR"]) ? $Format ["ValueR"] : 255;
    $ValueG = isset($Format ["ValueG"]) ? $Format ["ValueG"] : 255;
    $ValueB = isset($Format ["ValueB"]) ? $Format ["ValueB"] : 255;
    $ValueAlpha = isset($Format ["ValueAlpha"]) ? $Format ["ValueAlpha"] : 100;
    $RecordImageMap = isset($Format ["RecordImageMap"]) ? $Format ["RecordImageMap"] : FALSE;

    /* Error correction for overlaying rounded corners */
    if ($SkewFactor < .5) {
      $SkewFactor = .5;
    }

    /* Data Processing */
    $Data = $this->pDataObject->getData();
    $Palette = $this->pDataObject->getPalette();

    /* Do we have an abscissa serie defined? */
    if ($Data ["Abscissa"] == "") {
      return (PIE_NO_ABSCISSA);
    }

    /* Try to find the data serie */
    $DataSerie = "";
    foreach ($Data ["Series"] as $SerieName => $SerieData) 
     {
      if ($SerieName != $Data ["Abscissa"]) {
        $DataSerie = $SerieName;
      }
    }

    /* Do we have data to compute? */
    if ($DataSerie == "") {
      return (PIE_NO_DATASERIE);
    }

    /* Remove unused data */
    list($Data, $Palette) = $this->clean0Values($Data, $Palette, $DataSerie, $Data ["Abscissa"]);

    /* Compute the pie sum */
    $SerieSum = $this->pDataObject->getSum($DataSerie);

    /* Do we have data to draw? */
    if ($SerieSum == 0) {
      return (PIE_SUMISNULL);
    }

    /* Dump the real number of data to draw */
    $Values = array();
    foreach ($Data ["Series"][$DataSerie]["Data"] as $Key => $Value) 
     {
      if ($Value != 0) {
        $Values [] = $Value;
      }
    }

    /* Compute the wasted angular space between series */
    if (count($Values) == 1) {
      $WastedAngular = 0;
    }
    else {
      $WastedAngular = count($Values) * $DataGapAngle;
    }

    /* Compute the scale */
    $ScaleFactor = (360 - $WastedAngular) / $SerieSum;

    $RestoreShadow = $this->pChartObject->Shadow;
    if ($this->pChartObject->Shadow) {
      $this->pChartObject->Shadow = FALSE;
    }

    /* Draw the polygon ring elements */
    $Offset = 360;
    $ID = count($Values) -1;
    $Values = array_reverse($Values);
    $Slice = 0;
    $Slices = array();
    $SliceColors = "";
    $Visible = "";
    $SliceAngle = "";
    foreach ($Values as $Key => $Value) 
     {
      if (!isset($Palette [$ID]["R"])) {
        $Color = $this->pChartObject->getRandomColor();
        $Palette [$ID] = $Color;
        $this->pDataObject->savePalette($ID, $Color);
      }
      $Settings = array("R" => $Palette [$ID]["R"], "G" => $Palette [$ID]["G"], "B" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);

      $SliceColors [$Slice] = $Settings;

      $StartAngle = $Offset;
      $EndAngle = $Offset -($Value * $ScaleFactor);
      if ($EndAngle < 0) {
        $EndAngle = 0;
      }

      if ($StartAngle > 180) {
        $Visible [$Slice]["Start"] = TRUE;
      }
      else {
        $Visible [$Slice]["Start"] = TRUE;
      }
      if ($EndAngle < 180) {
        $Visible [$Slice]["End"] = FALSE;
      }
      else {
        $Visible [$Slice]["End"] = TRUE;
      }

      $Step = (360 / (2 * PI * $OuterRadius)) / 2;
      $OutX1 = VOID;
      $OutY1 = VOID;
      for ($i = $Offset; $i >= $EndAngle; $i = $i -$Step) 
       {
        $Xc = cos(($i -90) * PI / 180) * ($OuterRadius + $DataGapRadius -2) + $X;
        $Yc = sin(($i -90) * PI / 180) * ($OuterRadius + $DataGapRadius -2) * $SkewFactor + $Y;
        $Slices [$Slice]["AA"][] = array($Xc, $Yc);

        $Xc = cos(($i -90) * PI / 180) * ($OuterRadius + $DataGapRadius -1) + $X;
        $Yc = sin(($i -90) * PI / 180) * ($OuterRadius + $DataGapRadius -1) * $SkewFactor + $Y;
        $Slices [$Slice]["AA"][] = array($Xc, $Yc);

        $Xc = cos(($i -90) * PI / 180) * ($OuterRadius + $DataGapRadius) + $X;
        $Yc = sin(($i -90) * PI / 180) * ($OuterRadius + $DataGapRadius) * $SkewFactor + $Y;
        $this->pChartObject->drawAntialiasPixel($Xc, $Yc, $Settings);

        if ($OutX1 == VOID) {
          $OutX1 = $Xc;
          $OutY1 = $Yc;
        }

        if ($i < 90) {
          $Yc++;
        }
        if ($i > 90 && $i < 180) {
          $Xc++;
        }
        if ($i > 180 && $i < 270) {
          $Xc++;
        }
        if ($i >= 270) {
          $Xc++;
          $Yc++;
        }

        $Slices [$Slice]["BottomPoly"][] = floor($Xc);
        $Slices [$Slice]["BottomPoly"][] = floor($Yc);
        $Slices [$Slice]["TopPoly"][] = floor($Xc);
        $Slices [$Slice]["TopPoly"][] = floor($Yc) -$SliceHeight;
        $Slices [$Slice]["Angle"][] = $i;
      }
      $OutX2 = $Xc;
      $OutY2 = $Yc;

      $Slices [$Slice]["Angle"][] = VOID;
      $Lasti = $i;

      $Step = (360 / (2 * PI * $InnerRadius)) / 2;
      $InX1 = VOID;
      $InY1 = VOID;
      for ($i = $EndAngle; $i <= $Offset; $i = $i + $Step) 
       {
        $Xc = cos(($i -90) * PI / 180) * ($InnerRadius + $DataGapRadius -1) + $X;
        $Yc = sin(($i -90) * PI / 180) * ($InnerRadius + $DataGapRadius -1) * $SkewFactor + $Y;
        $Slices [$Slice]["AA"][] = array($Xc, $Yc);

        $Xc = cos(($i -90) * PI / 180) * ($InnerRadius + $DataGapRadius) + $X;
        $Yc = sin(($i -90) * PI / 180) * ($InnerRadius + $DataGapRadius) * $SkewFactor + $Y;
        $Slices [$Slice]["AA"][] = array($Xc, $Yc);

        if ($InX1 == VOID) {
          $InX1 = $Xc;
          $InY1 = $Yc;
        }

        if ($i < 90) {
          $Yc++;
        }
        if ($i > 90 && $i < 180) {
          $Xc++;
        }
        if ($i > 180 && $i < 270) {
          $Xc++;
        }
        if ($i >= 270) {
          $Xc++;
          $Yc++;
        }

        $Slices [$Slice]["BottomPoly"][] = floor($Xc);
        $Slices [$Slice]["BottomPoly"][] = floor($Yc);
        $Slices [$Slice]["TopPoly"][] = floor($Xc);
        $Slices [$Slice]["TopPoly"][] = floor($Yc) -$SliceHeight;
        $Slices [$Slice]["Angle"][] = $i;
      }
      $InX2 = $Xc;
      $InY2 = $Yc;

      $Slices [$Slice]["InX1"] = $InX1;
      $Slices [$Slice]["InY1"] = $InY1;
      $Slices [$Slice]["InX2"] = $InX2;
      $Slices [$Slice]["InY2"] = $InY2;
      $Slices [$Slice]["OutX1"] = $OutX1;
      $Slices [$Slice]["OutY1"] = $OutY1;
      $Slices [$Slice]["OutX2"] = $OutX2;
      $Slices [$Slice]["OutY2"] = $OutY2;

      $Offset = $Lasti - $DataGapAngle;
      $ID--;
      $Slice++;
    }

    /* Draw the bottom pie splice */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $this->pChartObject->drawPolygon($Plots ["BottomPoly"], $Settings);

      foreach ($Plots ["AA"] as $Key => $Pos) {
        $this->pChartObject->drawAntialiasPixel($Pos [0], $Pos [1], $Settings);
      };

      $this->pChartObject->drawLine($Plots ["InX1"], $Plots ["InY1"], $Plots ["OutX2"], $Plots ["OutY2"], $Settings);
      $this->pChartObject->drawLine($Plots ["InX2"], $Plots ["InY2"], $Plots ["OutX1"], $Plots ["OutY1"], $Settings);
    }

    $Slices = array_reverse($Slices);
    $SliceColors = array_reverse($SliceColors);

    /* Draw the vertical edges (semi-visible) */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $Settings ["R"] = $Settings ["R"] + $Cf;
      $Settings ["G"] = $Settings ["G"] + $Cf;
      $Settings ["B"] = $Settings ["B"] + $Cf;

      $StartAngle = $Plots ["Angle"][0];
      foreach ($Plots ["Angle"] as $Key => $Angle) {
        if ($Angle == VOID) {
          $EndAngle = $Plots ["Angle"][$Key -1];
        }
      }

      if ($StartAngle >= 270 || $StartAngle <= 90) {
        $this->pChartObject->drawLine($Plots ["OutX1"], $Plots ["OutY1"], $Plots ["OutX1"], $Plots ["OutY1"] -$SliceHeight, $Settings);
      }
      if ($StartAngle >= 270 || $StartAngle <= 90) {
        $this->pChartObject->drawLine($Plots ["OutX2"], $Plots ["OutY2"], $Plots ["OutX2"], $Plots ["OutY2"] -$SliceHeight, $Settings);
      }

      $this->pChartObject->drawLine($Plots ["InX1"], $Plots ["InY1"], $Plots ["InX1"], $Plots ["InY1"] -$SliceHeight, $Settings);
      $this->pChartObject->drawLine($Plots ["InX2"], $Plots ["InY2"], $Plots ["InX2"], $Plots ["InY2"] -$SliceHeight, $Settings);
    }

    /* Draw the inner vertical slices */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $Settings ["R"] = $Settings ["R"] + $Cf;
      $Settings ["G"] = $Settings ["G"] + $Cf;
      $Settings ["B"] = $Settings ["B"] + $Cf;

      $Outer = TRUE;
      $Inner = FALSE;
      $InnerPlotsA = array();
      $InnerPlotsB = array();
      foreach ($Plots ["Angle"] as $ID => $Angle) 
       {
        if ($Angle == VOID) 
         {
          $Outer = FALSE;
          $Inner = TRUE;
        }
        elseif ($Inner) 
         {
          if (($Angle < 90 || $Angle > 270) && isset($Plots ["BottomPoly"][$ID * 2])) 
           {
            $Xo = $Plots ["BottomPoly"][$ID * 2];
            $Yo = $Plots ["BottomPoly"][$ID * 2 + 1];

            $InnerPlotsA [] = $Xo;
            $InnerPlotsA [] = $Yo;
            $InnerPlotsB [] = $Xo;
            $InnerPlotsB [] = $Yo -$SliceHeight;
          }
        }
      }

      if ($InnerPlotsA != "") 
       {
        $InnerPlots = array_merge($InnerPlotsA, $this->arrayReverse($InnerPlotsB));
        $this->pChartObject->drawPolygon($InnerPlots, $Settings);
      }
    }

    /* Draw the splice top and left poly */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $Settings ["R"] = $Settings ["R"] + $Cf * 1.5;
      $Settings ["G"] = $Settings ["G"] + $Cf * 1.5;
      $Settings ["B"] = $Settings ["B"] + $Cf * 1.5;

      $StartAngle = $Plots ["Angle"][0];
      foreach ($Plots ["Angle"] as $Key => $Angle) {
        if ($Angle == VOID) {
          $EndAngle = $Plots ["Angle"][$Key -1];
        }
      }

      if ($StartAngle < 180) 
       {
        $Points = array();
        $Points [] = $Plots ["InX2"];
        $Points [] = $Plots ["InY2"];
        $Points [] = $Plots ["InX2"];
        $Points [] = $Plots ["InY2"] -$SliceHeight;
        $Points [] = $Plots ["OutX1"];
        $Points [] = $Plots ["OutY1"] -$SliceHeight;
        $Points [] = $Plots ["OutX1"];
        $Points [] = $Plots ["OutY1"];

        $this->pChartObject->drawPolygon($Points, $Settings);
      }

      if ($EndAngle > 180) 
       {
        $Points = array();
        $Points [] = $Plots ["InX1"];
        $Points [] = $Plots ["InY1"];
        $Points [] = $Plots ["InX1"];
        $Points [] = $Plots ["InY1"] -$SliceHeight;
        $Points [] = $Plots ["OutX2"];
        $Points [] = $Plots ["OutY2"] -$SliceHeight;
        $Points [] = $Plots ["OutX2"];
        $Points [] = $Plots ["OutY2"];

        $this->pChartObject->drawPolygon($Points, $Settings);
      }
    }


    /* Draw the vertical edges (visible) */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $Settings ["R"] = $Settings ["R"] + $Cf;
      $Settings ["G"] = $Settings ["G"] + $Cf;
      $Settings ["B"] = $Settings ["B"] + $Cf;

      $StartAngle = $Plots ["Angle"][0];
      foreach ($Plots ["Angle"] as $Key => $Angle) {
        if ($Angle == VOID) {
          $EndAngle = $Plots ["Angle"][$Key -1];
        }
      }

      if ($StartAngle <= 270 && $StartAngle >= 90) {
        $this->pChartObject->drawLine($Plots ["OutX1"], $Plots ["OutY1"], $Plots ["OutX1"], $Plots ["OutY1"] -$SliceHeight, $Settings);
      }
      if ($EndAngle <= 270 && $EndAngle >= 90) {
        $this->pChartObject->drawLine($Plots ["OutX2"], $Plots ["OutY2"], $Plots ["OutX2"], $Plots ["OutY2"] -$SliceHeight, $Settings);
      }
    }


    /* Draw the outer vertical slices */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $Settings ["R"] = $Settings ["R"] + $Cf;
      $Settings ["G"] = $Settings ["G"] + $Cf;
      $Settings ["B"] = $Settings ["B"] + $Cf;

      $Outer = TRUE;
      $Inner = FALSE;
      $OuterPlotsA = array();
      $OuterPlotsB = array();
      $InnerPlotsA = "";
      $InnerPlotsB = "";
      foreach ($Plots ["Angle"] as $ID => $Angle) 
       {
        if ($Angle == VOID) 
         {
          $Outer = FALSE;
          $Inner = TRUE;
        }
        elseif ($Outer) 
         {
          if (($Angle > 90 && $Angle < 270) && isset($Plots ["BottomPoly"][$ID * 2])) 
           {
            $Xo = $Plots ["BottomPoly"][$ID * 2];
            $Yo = $Plots ["BottomPoly"][$ID * 2 + 1];

            $OuterPlotsA [] = $Xo;
            $OuterPlotsA [] = $Yo;
            $OuterPlotsB [] = $Xo;
            $OuterPlotsB [] = $Yo -$SliceHeight;
          }
        }
      }
      if ($OuterPlotsA != "") 
       {
        $OuterPlots = array_merge($OuterPlotsA, $this->arrayReverse($OuterPlotsB));
        $this->pChartObject->drawPolygon($OuterPlots, $Settings);
      }
    }

    $Slices = array_reverse($Slices);
    $SliceColors = array_reverse($SliceColors);


    /* Draw the top pie splice */
    foreach ($Slices as $SliceID => $Plots) 
     {
      $Settings = $SliceColors [$SliceID];
      $Settings ["NoBorder"] = TRUE;
      $Settings ["R"] = $Settings ["R"] + $Cf * 2;
      $Settings ["G"] = $Settings ["G"] + $Cf * 2;
      $Settings ["B"] = $Settings ["B"] + $Cf * 2;

      $this->pChartObject->drawPolygon($Plots ["TopPoly"], $Settings);

      if ($RecordImageMap) {
        $this->pChartObject->addToImageMap("POLY", $this->arraySerialize($Plots ["TopPoly"]), $this->pChartObject->toHTMLColor($Settings ["R"], $Settings ["G"], $Settings ["B"]), $Data ["Series"][$Data ["Abscissa"]]["Data"][$SliceID], $Data ["Series"][$DataSerie]["Data"][count($Slices) -$SliceID -1]);
      }

      foreach ($Plots ["AA"] as $Key => $Pos) {
        $this->pChartObject->drawAntialiasPixel($Pos [0], $Pos [1] -$SliceHeight, $Settings);
      };

      $this->pChartObject->drawLine($Plots ["InX1"], $Plots ["InY1"] -$SliceHeight, $Plots ["OutX2"], $Plots ["OutY2"] -$SliceHeight, $Settings);
      $this->pChartObject->drawLine($Plots ["InX2"], $Plots ["InY2"] -$SliceHeight, $Plots ["OutX1"], $Plots ["OutY1"] -$SliceHeight, $Settings);
    }

    if ($DrawLabels) 
     {
      $Offset = 360;
      foreach ($Values as $Key => $Value) 
       {
        $StartAngle = $Offset;
        $EndAngle = $Offset -($Value * $ScaleFactor);
        if ($EndAngle < 0) {
          $EndAngle = 0;
        }

        if ($LabelColor == PIE_LABEL_COLOR_AUTO) 
         {
          $Settings = array("FillR" => $Palette [$ID]["R"], "FillG" => $Palette [$ID]["G"], "FillB" => $Palette [$ID]["B"], "Alpha" => $Palette [$ID]["Alpha"]);
        }
        else 
         {
          $Settings = array("FillR" => $LabelR, "FillG" => $LabelG, "FillB" => $LabelB, "Alpha" => $LabelAlpha);
        }

        $Angle = ($EndAngle - $Offset) / 2 + $Offset;
        $Xc = cos(($Angle -90) * PI / 180) * ($OuterRadius + $DataGapRadius) + $X;
        $Yc = sin(($Angle -90) * PI / 180) * ($OuterRadius + $DataGapRadius) * $SkewFactor + $Y;

        if ($WriteValues == PIE_VALUE_PERCENTAGE) {
          $Label = $Display = round((100 / $SerieSum) * $Value, $Precision) . "%";
        }
        elseif ($WriteValues == PIE_VALUE_NATURAL) {
          $Label = $Data ["Series"][$Data ["Abscissa"]]["Data"][$Key];
        }
        else {
          $Label = "";
        }

        if ($LabelStacked) {
          $this->writePieLabel($Xc, $Yc -$SliceHeight, $Label, $Angle, $Settings, TRUE, $X, $Y, $OuterRadius);
        }
        else {
          $this->writePieLabel($Xc, $Yc -$SliceHeight, $Label, $Angle, $Settings, FALSE);
        }

        $Offset = $EndAngle - $DataGapAngle;
        $ID--;
        $Slice++;
      }
    }
    if ($DrawLabels && $LabelStacked) {
      $this->writeShiftedLabels();
    }

    $this->pChartObject->Shadow = $RestoreShadow;

    return (PIE_RENDERED);
  }

  /* Serialize an array */
  function arraySerialize($Data) 
   {
    $Result = "";
    foreach ($Data as $Key => $Value) 
     {
      if ($Result == "") {
        $Result = floor($Value);
      }
      else {
        $Result = $Result . "," . floor($Value);
      }
    }

    return ($Result);
  }

  /* Reverse an array */
  function arrayReverse($Plots) 
   {
    $Result = array();

    for ($i = count($Plots) -1; $i >= 0; $i = $i -2) 
     {
      $Result [] = $Plots [$i -1];
      $Result [] = $Plots [$i];
    }

    return ($Result);
  }

  /* Remove unused series & values */
  function clean0Values($Data, $Palette, $DataSerie, $AbscissaSerie) 
   {
    $NewPalette = array();
    $NewData = array();
    $NewAbscissa = array();

    /* Remove unused series */
    foreach ($Data ["Series"] as $SerieName => $SerieSettings) 
     {
      if ($SerieName != $DataSerie && $SerieName != $AbscissaSerie) {
        unset($Data ["Series"][$SerieName]);
      }
    }

    /* Remove NULL values */
    foreach ($Data ["Series"][$DataSerie]["Data"] as $Key => $Value) 
     {
      if ($Value != 0) 
       {
        $NewData [] = $Value;
        $NewAbscissa [] = $Data ["Series"][$AbscissaSerie]["Data"][$Key];
        if (isset($Palette [$Key])) {
          $NewPalette [] = $Palette [$Key];
        }
      }
    }
    $Data ["Series"][$DataSerie]["Data"] = $NewData;
    $Data ["Series"][$AbscissaSerie]["Data"] = $NewAbscissa;

    return (array($Data, $NewPalette));
  }
}