function pChart::drawRadar in Visitors 7.0

Same name and namespace in other branches

1. 8 pchart/pChart.inc \pChart::drawRadar()

File

pchart/pChart.inc, line 1613

Class

pChart

Code

function drawRadar(&$Data, &$DataDescription, $BorderOffset = 10, $MaxValue = -1) {

  /* Validate the Data and DataDescription array */
  $this
    ->validateDataDescription("drawRadar", $DataDescription);
  $this
    ->validateData("drawRadar", $Data);
  $Points = count($Data);
  $Radius = ($this->GArea_Y2 - $this->GArea_Y1) / 2 - $BorderOffset;
  $XCenter = ($this->GArea_X2 - $this->GArea_X1) / 2 + $this->GArea_X1;
  $YCenter = ($this->GArea_Y2 - $this->GArea_Y1) / 2 + $this->GArea_Y1;

  /* Search for the max value */
  if ($MaxValue == -1) {
    foreach ($DataDescription["Values"] as $Key2 => $ColName) {
      foreach ($Data as $Key => $Values) {
        if (isset($Data[$Key][$ColName])) {
          if ($Data[$Key][$ColName] > $MaxValue) {
            $MaxValue = $Data[$Key][$ColName];
          }
        }
      }
    }
  }
  $GraphID = 0;
  foreach ($DataDescription["Values"] as $Key2 => $ColName) {
    $ID = 0;
    foreach ($DataDescription["Description"] as $keyI => $ValueI) {
      if ($keyI == $ColName) {
        $ColorID = $ID;
      }
      $ID++;
    }
    $Angle = -90;
    $XLast = -1;
    foreach ($Data as $Key => $Values) {
      if (isset($Data[$Key][$ColName])) {
        $Value = $Data[$Key][$ColName];
        $Strength = $Radius / $MaxValue * $Value;
        $XPos = cos($Angle * 3.1418 / 180) * $Strength + $XCenter;
        $YPos = sin($Angle * 3.1418 / 180) * $Strength + $YCenter;
        if ($XLast != -1) {
          $this
            ->drawLine($XLast, $YLast, $XPos, $YPos, $this->Palette[$ColorID]["R"], $this->Palette[$ColorID]["G"], $this->Palette[$ColorID]["B"]);
        }
        if ($XLast == -1) {
          $FirstX = $XPos;
          $FirstY = $YPos;
        }
        $Angle = $Angle + 360 / $Points;
        $XLast = $XPos;
        $YLast = $YPos;
      }
    }
    $this
      ->drawLine($XPos, $YPos, $FirstX, $FirstY, $this->Palette[$ColorID]["R"], $this->Palette[$ColorID]["G"], $this->Palette[$ColorID]["B"]);
    $GraphID++;
  }
}