function drawBasicPieGraph(&$Data, &$DataDescription, $XPos, $YPos, $Radius = 100, $DrawLabels = PIE_NOLABEL, $R = 255, $G = 255, $B = 255, $Decimals = 0)
{
/* Validate the Data and DataDescription array */
$this->validateDataDescription("drawBasicPieGraph", $DataDescription, FALSE);
$this->validateData("drawBasicPieGraph", $Data);
/* Determine pie sum */
$Series = 0;
$PieSum = 0;
foreach ($DataDescription["Values"] as $Key2 => $ColName) {
if ($ColName != $DataDescription["Position"]) {
$Series++;
foreach ($Data as $Key => $Values) {
if (isset($Data[$Key][$ColName])) {
$PieSum = $PieSum + $Data[$Key][$ColName];
}
$iValues[] = $Data[$Key][$ColName];
$iLabels[] = $Data[$Key][$DataDescription["Position"]];
}
}
}
/* Validate serie */
if ($Series != 1) {
RaiseFatal("Pie chart can only accept one serie of data.");
}
if ($PieSum == 0) {
$PieSum = 0.1;
}
$SpliceRatio = 360 / $PieSum;
$SplicePercent = 100 / $PieSum;
/* Calculate all polygons */
$Angle = 0;
$TopPlots = "";
foreach ($iValues as $Key => $Value) {
$TopPlots[$Key][] = $XPos;
$TopPlots[$Key][] = $YPos;
/* Process labels position & size */
if (!($DrawLabels == PIE_NOLABEL)) {
$TAngle = $Angle + $Value * $SpliceRatio / 2;
if ($DrawLabels == PIE_PERCENTAGE) {
$Caption = floor($Value * pow(10, $Decimals) * $SplicePercent) / pow(10, $Decimals) . "%";
} elseif ($DrawLabels == PIE_LABELS) {
$Caption = $iLabels[$Key];
}
$TX = cos($TAngle * 3.1418 / 180) * ($Radius + 10) + $XPos;
$TY = sin($TAngle * 3.1418 / 180) * ($Radius + 10) + $YPos + 4;
if ($TAngle > 90 && $TAngle < 270) {
$Position = imageftbbox($this->FontSize, 0, $this->FontName, $Caption);
$TextWidth = $Position[2] - $Position[0];
$TX = $TX - $TextWidth;
}
$C_TextColor = imagecolorallocate($this->Picture, 70, 70, 70);
imagettftext($this->Picture, $this->FontSize, 0, $TX, $TY, $C_TextColor, $this->FontName, $Caption);
}
/* Process pie slices */
for ($iAngle = $Angle; $iAngle <= $Angle + $Value * $SpliceRatio; $iAngle = $iAngle + 0.5) {
$TopX = cos($iAngle * 3.1418 / 180) * $Radius + $XPos;
$TopY = sin($iAngle * 3.1418 / 180) * $Radius + $YPos;
$TopPlots[$Key][] = $TopX;
$TopPlots[$Key][] = $TopY;
}
$TopPlots[$Key][] = $XPos;
$TopPlots[$Key][] = $YPos;
$Angle = $iAngle;
}
$PolyPlots = $TopPlots;
/* Set array values type to float --- PHP Bug with imagefilledpolygon casting to integer */
foreach ($TopPlots as $Key => $Value) {
foreach ($TopPlots[$Key] as $Key2 => $Value2) {
settype($TopPlots[$Key][$Key2], "float");
}
}
/* Draw Top polygons */
foreach ($PolyPlots as $Key => $Value) {
$C_GraphLo = imagecolorallocate($this->Picture, $this->Palette[$Key]["R"], $this->Palette[$Key]["G"], $this->Palette[$Key]["B"]);
imagefilledpolygon($this->Picture, $PolyPlots[$Key], (count($PolyPlots[$Key]) + 1) / 2, $C_GraphLo);
}
$this->drawCircle($XPos - 0.5, $YPos - 0.5, $Radius, $R, $G, $B);
$this->drawCircle($XPos - 0.5, $YPos - 0.5, $Radius + 0.5, $R, $G, $B);
/* Draw Top polygons */
foreach ($TopPlots as $Key => $Value) {
for ($j = 0; $j <= count($TopPlots[$Key]) - 4; $j = $j + 2) {
$this->drawLine($TopPlots[$Key][$j], $TopPlots[$Key][$j + 1], $TopPlots[$Key][$j + 2], $TopPlots[$Key][$j + 3], $R, $G, $B);
}
}
}
function drawPieGraph(&$Data, &$DataDescription, $XPos, $YPos, $Radius = 100, $DrawLabels = PIE_NOLABEL, $EnhanceColors = TRUE, $Skew = 60, $SpliceHeight = 20, $SpliceDistance = 0, $Decimals = 0)
{
/* Validate the Data and DataDescription array */
$this->validateDataDescription("drawPieGraph", $DataDescription, FALSE);
$this->validateData("drawPieGraph", $Data);
/* Determine pie sum */
$Series = 0;
$PieSum = 0;
$rPieSum = 0;
foreach ($DataDescription["Values"] as $Key2 => $ColName) {
if ($ColName != $DataDescription["Position"]) {
$Series++;
foreach ($Data as $Key => $Values) {
if (isset($Data[$Key][$ColName])) {
if ($Data[$Key][$ColName] == 0) {
$PieSum++;
$iValues[] = 1;
$rValues[] = 0;
} else {
$PieSum += $Data[$Key][$ColName];
$iValues[] = $Data[$Key][$ColName];
$iLabels[] = $Data[$Key][$DataDescription["Position"]];
$rValues[] = $Data[$Key][$ColName];
$rPieSum += $Data[$Key][$ColName];
}
}
}
}
}
/* Validate serie */
if ($Series != 1) {
RaiseFatal("Pie chart can only accept one serie of data.");
}
$SpliceDistanceRatio = $SpliceDistance;
$SkewHeight = $Radius * $Skew / 100;
$SpliceRatio = (360 - $SpliceDistanceRatio * count($iValues)) / $PieSum;
$SplicePercent = 100 / $PieSum;
$rSplicePercent = 100 / $rPieSum;
/* Calculate all polygons */
$Angle = 0;
$TopPlots = "";
$BotPlots = "";
$CDev = 5;
foreach ($iValues as $Key => $Value) {
$XCenterPos = cos(($Angle - $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $XPos;
$YCenterPos = sin(($Angle - $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $YPos;
$XCenterPos2 = cos(($Angle + $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $XPos;
$YCenterPos2 = sin(($Angle + $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $YPos;
$TopPlots[$Key][] = $XCenterPos;
$BotPlots[$Key][] = $XCenterPos;
$TopPlots[$Key][] = $YCenterPos;
$BotPlots[$Key][] = $YCenterPos + $SpliceHeight;
/* Process labels position & size */
if (!($DrawLabels == PIE_NOLABEL)) {
$TAngle = $Angle + $Value * $SpliceRatio / 2;
if ($DrawLabels == PIE_PERCENTAGE) {
$Caption = floor($rValues[$Key] * pow(10, $Decimals) * $rSplicePercent) / pow(10, $Decimals) . "%";
} elseif ($DrawLabels == PIE_LABELS) {
$Caption = $iLabels[$Key];
}
$TX = cos($TAngle * 3.1418 / 180) * ($Radius + 10) + $XPos;
if ($TAngle > 0 && $TAngle < 180) {
$TY = sin($TAngle * 3.1418 / 180) * ($SkewHeight + 10) + $YPos + $SpliceHeight + 4;
} else {
$TY = sin($TAngle * 3.1418 / 180) * ($SkewHeight + 10) + $YPos + 4;
}
if ($TAngle > 90 && $TAngle < 270) {
$Position = imageftbbox($this->FontSize, 0, $this->FontName, $Caption);
$TextWidth = $Position[2] - $Position[0];
$TX = $TX - $TextWidth;
}
$C_TextColor = imagecolorallocate($this->Picture, 70, 70, 70);
imagettftext($this->Picture, $this->FontSize, 0, $TX, $TY, $C_TextColor, $this->FontName, $Caption);
}
/* Process pie slices */
for ($iAngle = $Angle; $iAngle <= $Angle + $Value * $SpliceRatio; $iAngle = $iAngle + 0.5) {
$TopX = cos($iAngle * 3.1418 / 180) * $Radius + $XPos;
$TopY = sin($iAngle * 3.1418 / 180) * $SkewHeight + $YPos;
$TopPlots[$Key][] = $TopX;
$BotPlots[$Key][] = $TopX;
$TopPlots[$Key][] = $TopY;
$BotPlots[$Key][] = $TopY + $SpliceHeight;
}
$TopPlots[$Key][] = $XCenterPos2;
$BotPlots[$Key][] = $XCenterPos2;
$TopPlots[$Key][] = $YCenterPos2;
$BotPlots[$Key][] = $YCenterPos2 + $SpliceHeight;
$Angle = $iAngle + $SpliceDistanceRatio;
}
/* Draw Bottom polygons */
foreach ($iValues as $Key => $Value) {
$C_GraphLo = $this->AllocateColor($this->Picture, $this->Palette[$Key]["R"], $this->Palette[$Key]["G"], $this->Palette[$Key]["B"], -20);
imagefilledpolygon($this->Picture, $BotPlots[$Key], (count($BotPlots[$Key]) + 1) / 2, $C_GraphLo);
for ($j = 0; $j <= count($BotPlots[$Key]) - 4; $j = $j + 2) {
$this->drawLine($BotPlots[$Key][$j], $BotPlots[$Key][$j + 1], $BotPlots[$Key][$j + 2], $BotPlots[$Key][$j + 3], $this->Palette[$Key]["R"] - 20, $this->Palette[$Key]["G"] - 20, $this->Palette[$Key]["B"] - 20);
}
}
/* Draw pie layers */
if ($EnhanceColors) {
$ColorRatio = 30 / $SpliceHeight;
} else {
$ColorRatio = 25 / $SpliceHeight;
}
for ($i = $SpliceHeight - 1; $i >= 1; $i--) {
foreach ($iValues as $Key => $Value) {
$C_GraphLo = $this->AllocateColor($this->Picture, $this->Palette[$Key]["R"], $this->Palette[$Key]["G"], $this->Palette[$Key]["B"], -10);
$Plots = "";
$Plot = 0;
foreach ($TopPlots[$Key] as $Key2 => $Value2) {
$Plot++;
if ($Plot % 2 == 1) {
$Plots[] = $Value2;
} else {
$Plots[] = $Value2 + $i;
}
}
imagefilledpolygon($this->Picture, $Plots, (count($Plots) + 1) / 2, $C_GraphLo);
$Index = count($Plots);
$ColorFactor = -20 + ($SpliceHeight - $i) * $ColorRatio;
$this->drawAntialiasPixel($Plots[0], $Plots[1], $this->Palette[$Key]["R"] + $ColorFactor, $this->Palette[$Key]["G"] + $ColorFactor, $this->Palette[$Key]["B"] + $ColorFactor);
$this->drawAntialiasPixel($Plots[2], $Plots[3], $this->Palette[$Key]["R"] + $ColorFactor, $this->Palette[$Key]["G"] + $ColorFactor, $this->Palette[$Key]["B"] + $ColorFactor);
$this->drawAntialiasPixel($Plots[$Index - 4], $Plots[$Index - 3], $this->Palette[$Key]["R"] + $ColorFactor, $this->Palette[$Key]["G"] + $ColorFactor, $this->Palette[$Key]["B"] + $ColorFactor);
}
}
/* Draw Top polygons */
for ($Key = count($iValues) - 1; $Key >= 0; $Key--) {
$C_GraphLo = $this->AllocateColor($this->Picture, $this->Palette[$Key]["R"], $this->Palette[$Key]["G"], $this->Palette[$Key]["B"]);
imagefilledpolygon($this->Picture, $TopPlots[$Key], (count($TopPlots[$Key]) + 1) / 2, $C_GraphLo);
if ($EnhanceColors) {
$En = 10;
} else {
$En = 5;
}
for ($j = 0; $j <= count($TopPlots[$Key]) - 4; $j = $j + 2) {
$this->drawLine($TopPlots[$Key][$j], $TopPlots[$Key][$j + 1], $TopPlots[$Key][$j + 2], $TopPlots[$Key][$j + 3], $this->Palette[$Key]["R"] + $En, $this->Palette[$Key]["G"] + $En, $this->Palette[$Key]["B"] + $En);
}
}
}
/**
* This function draw a pseudo-3D pie chart
*/
function drawPieGraph($Data, $DataDescription, $XPos, $YPos, $Radius = 100, $DrawLabels = PIE_NOLABEL, $EnhanceColors = TRUE, $Skew = 60, $SpliceHeight = 20, $SpliceDistance = 0, $Decimals = 0)
{
/* Validate the Data and DataDescription array */
$this->validateDataDescription("drawPieGraph", $DataDescription, FALSE);
$this->validateData("drawPieGraph", $Data);
/* Determine pie sum */
$Series = 0;
$PieSum = 0;
$rPieSum = 0;
foreach ($DataDescription["Values"] as $Key2 => $ColName) {
if ($ColName != $DataDescription["Position"]) {
$Series++;
foreach ($Data as $Key => $Values) {
if (isset($Data[$Key][$ColName])) {
if ($Data[$Key][$ColName] == 0) {
$iValues[] = 0;
$rValues[] = 0;
$iLabels[] = $Data[$Key][$DataDescription["Position"]];
} else {
$PieSum += $Data[$Key][$ColName];
$iValues[] = $Data[$Key][$ColName];
$iLabels[] = $Data[$Key][$DataDescription["Position"]];
$rValues[] = $Data[$Key][$ColName];
$rPieSum += $Data[$Key][$ColName];
}
}
}
}
}
/* Validate serie */
if ($Series != 1) {
RaiseFatal("Pie chart can only accept one serie of data.");
}
$SpliceDistanceRatio = $SpliceDistance;
$SkewHeight = $Radius * $Skew / 100;
$SpliceRatio = (360 - $SpliceDistanceRatio * count($iValues)) / $PieSum;
$SplicePercent = 100 / $PieSum;
$rSplicePercent = 100 / $rPieSum;
/* Calculate all polygons */
$Angle = 0;
$CDev = 5;
$TopPlots = "";
$BotPlots = "";
$aTopPlots = "";
$aBotPlots = "";
foreach ($iValues as $Key => $Value) {
$XCenterPos = cos(($Angle - $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $XPos;
$YCenterPos = sin(($Angle - $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $YPos;
$XCenterPos2 = cos(($Angle + $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $XPos;
$YCenterPos2 = sin(($Angle + $CDev + ($Value * $SpliceRatio + $SpliceDistanceRatio) / 2) * 3.1418 / 180) * $SpliceDistance + $YPos;
$TopPlots[$Key][] = round($XCenterPos);
$BotPlots[$Key][] = round($XCenterPos);
$TopPlots[$Key][] = round($YCenterPos);
$BotPlots[$Key][] = round($YCenterPos + $SpliceHeight);
$aTopPlots[$Key][] = $XCenterPos;
$aBotPlots[$Key][] = $XCenterPos;
$aTopPlots[$Key][] = $YCenterPos;
$aBotPlots[$Key][] = $YCenterPos + $SpliceHeight;
/* Process labels position & size */
$Caption = "";
if (!($DrawLabels == PIE_NOLABEL)) {
$TAngle = $Angle + $Value * $SpliceRatio / 2;
if ($DrawLabels == PIE_PERCENTAGE) {
$Caption = round($rValues[$Key] * pow(10, $Decimals) * $rSplicePercent) / pow(10, $Decimals) . "%";
} elseif ($DrawLabels == PIE_LABELS) {
$Caption = $iLabels[$Key];
} elseif ($DrawLabels == PIE_PERCENTAGE_LABEL) {
$Caption = $iLabels[$Key] . "\r\n" . round($Value * pow(10, $Decimals) * $SplicePercent) / pow(10, $Decimals) . "%";
}
$Position = imageftbbox($this->FontSize, 0, $this->FontName, $Caption);
$TextWidth = $Position[2] - $Position[0];
$TextHeight = abs($Position[1]) + abs($Position[3]);
$TX = cos($TAngle * 3.1418 / 180) * ($Radius + 10) + $XPos;
if ($TAngle > 0 && $TAngle < 180) {
$TY = sin($TAngle * 3.1418 / 180) * ($SkewHeight + 10) + $YPos + $SpliceHeight + 4;
} else {
$TY = sin($TAngle * 3.1418 / 180) * ($SkewHeight + 4) + $YPos - $TextHeight / 2;
}
if ($TAngle > 90 && $TAngle < 270) {
$TX = $TX - $TextWidth;
}
$C_TextColor = $this->AllocateColor($this->Picture, 70, 70, 70);
imagettftext($this->Picture, $this->FontSize, 0, $TX, $TY, $C_TextColor, $this->FontName, $Caption);
}
/* Process pie slices */
for ($iAngle = $Angle; $iAngle <= $Angle + $Value * $SpliceRatio; $iAngle = $iAngle + 0.5) {
$TopX = cos($iAngle * 3.1418 / 180) * $Radius + $XPos;
$TopY = sin($iAngle * 3.1418 / 180) * $SkewHeight + $YPos;
$TopPlots[$Key][] = round($TopX);
$BotPlots[$Key][] = round($TopX);
$TopPlots[$Key][] = round($TopY);
$BotPlots[$Key][] = round($TopY + $SpliceHeight);
$aTopPlots[$Key][] = $TopX;
$aBotPlots[$Key][] = $TopX;
$aTopPlots[$Key][] = $TopY;
$aBotPlots[$Key][] = $TopY + $SpliceHeight;
}
$TopPlots[$Key][] = round($XCenterPos2);
$BotPlots[$Key][] = round($XCenterPos2);
$TopPlots[$Key][] = round($YCenterPos2);
$BotPlots[$Key][] = round($YCenterPos2 + $SpliceHeight);
$aTopPlots[$Key][] = $XCenterPos2;
$aBotPlots[$Key][] = $XCenterPos2;
$aTopPlots[$Key][] = $YCenterPos2;
$aBotPlots[$Key][] = $YCenterPos2 + $SpliceHeight;
$Angle = $iAngle + $SpliceDistanceRatio;
}
$this->drawPieGraphBottomPolygons($iValues, $BotPlots, $EnhanceColors, $aBotPlots);
$this->drawPieGraphLayers($iValues, $TopPlots, $EnhanceColors, $SpliceHeight, $this->Palette);
$this->drawPieGraphTopPolygons($iValues, $TopPlots, $EnhanceColors, $aTopPlots);
}