pPie.class.php in Visitors 7

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pChart/class/pPie.class.php

<?php

/*
    pPie - class to draw pie charts

    Version     : 2.1.4
    Made by     : Jean-Damien POGOLOTTI
    Last Update : 19/01/2014

    This file can be distributed under the license you can find at :

                      http://www.pchart.net/license

    You can find the whole class documentation on the pChart web site.
*/

/* Class return codes */
define("PIE_NO_ABSCISSA", 140001);
define("PIE_NO_DATASERIE", 140002);
define("PIE_SUMISNULL", 140003);
define("PIE_RENDERED", 140000);
define("PIE_LABEL_COLOR_AUTO", 140010);
define("PIE_LABEL_COLOR_MANUAL", 140011);
define("PIE_VALUE_NATURAL", 140020);
define("PIE_VALUE_PERCENTAGE", 140021);
define("PIE_VALUE_INSIDE", 140030);
define("PIE_VALUE_OUTSIDE", 140031);

/* pPie class definition */
class pPie {
  var $pChartObject;
  var $pDataObject;
  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 */
    $Values = "";
    foreach ($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 = "";
      $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"] : 0.5;
    $SliceHeight = isset($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 < 0.5) {
      $SkewFactor = 0.5;
    }

    /* 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 */
    $Values = "";
    foreach ($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) {
        $ShadowPie = "";
        for ($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 = "";
        $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 = "";
        $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 = "";
          $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;
      $Top = "";
      for ($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 */
    $Values = "";
    foreach ($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 = "";
      $Boundaries = "";
      $AAPixels = "";
      $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"] : 0.6;
    $SliceHeight = isset($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 < 0.5) {
      $SkewFactor = 0.5;
    }

    /* 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 */
    $Values = "";
    foreach ($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 = "";
    $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 = "";
      $InnerPlotsB = "";
      foreach ($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 = "";
        $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 = "";
        $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 = "";
      $OuterPlotsB = "";
      $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) {
    $Result = "";
    for ($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 = "";
    $NewData = "";
    $NewAbscissa = "";

    /* 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,
    );
  }

}

Constants

Name	Description
PIE_LABEL_COLOR_AUTO
PIE_LABEL_COLOR_MANUAL
PIE_NO_ABSCISSA
PIE_NO_DATASERIE
PIE_RENDERED
PIE_SUMISNULL
PIE_VALUE_INSIDE
PIE_VALUE_NATURAL
PIE_VALUE_OUTSIDE
PIE_VALUE_PERCENTAGE

Classes

Name	Description
pPie