function pSpring::firstPass in Visitors 7.2

Same name and namespace in other branches

1. 7 pChart/class/pSpring.class.php \pSpring::firstPass()

1 call to pSpring::firstPass()

pSpring::drawSpring in pChart/class/pSpring.class.php

File

pChart/class/pSpring.class.php, line 294

Class

pSpring

Code

function firstPass($Algorithm) {
  $CenterX = ($this->X2 - $this->X1) / 2 + $this->X1;
  $CenterY = ($this->Y2 - $this->Y1) / 2 + $this->Y1;

  /* Check connections reciprocity */
  foreach ($this->Data as $Key => $Settings) {
    if (isset($Settings["Connections"])) {
      foreach ($Settings["Connections"] as $ID => $ConnectionID) {
        $this
          ->checkConnection($ConnectionID, $Key);
      }
    }
  }
  if ($this->AutoComputeFreeZone) {
    $this
      ->autoFreeZone();
  }

  /* Get the max number of connections */
  $MaxConnections = 0;
  foreach ($this->Data as $Key => $Settings) {
    if (isset($Settings["Connections"])) {
      if ($MaxConnections < count($Settings["Connections"])) {
        $MaxConnections = count($Settings["Connections"]);
      }
    }
  }
  if ($Algorithm == ALGORITHM_WEIGHTED) {
    foreach ($this->Data as $Key => $Settings) {
      if ($Settings["Type"] == NODE_TYPE_CENTRAL) {
        $this->Data[$Key]["X"] = $CenterX;
        $this->Data[$Key]["Y"] = $CenterY;
      }
      if ($Settings["Type"] == NODE_TYPE_FREE) {
        if (isset($Settings["Connections"])) {
          $Connections = count($Settings["Connections"]);
        }
        else {
          $Connections = 0;
        }
        $Ring = $MaxConnections - $Connections;
        $Angle = rand(0, 360);
        $this->Data[$Key]["X"] = cos(deg2rad($Angle)) * ($Ring * $this->RingSize) + $CenterX;
        $this->Data[$Key]["Y"] = sin(deg2rad($Angle)) * ($Ring * $this->RingSize) + $CenterY;
      }
    }
  }
  elseif ($Algorithm == ALGORITHM_CENTRAL) {

    /* Put a weight on each nodes */
    foreach ($this->Data as $Key => $Settings) {
      if (isset($Settings["Connections"])) {
        $this->Data[$Key]["Weight"] = count($Settings["Connections"]);
      }
      else {
        $this->Data[$Key]["Weight"] = 0;
      }
    }
    $MaxConnections = $MaxConnections + 1;
    for ($i = $MaxConnections; $i >= 0; $i--) {
      foreach ($this->Data as $Key => $Settings) {
        if ($Settings["Type"] == NODE_TYPE_CENTRAL) {
          $this->Data[$Key]["X"] = $CenterX;
          $this->Data[$Key]["Y"] = $CenterY;
        }
        if ($Settings["Type"] == NODE_TYPE_FREE) {
          if (isset($Settings["Connections"])) {
            $Connections = count($Settings["Connections"]);
          }
          else {
            $Connections = 0;
          }
          if ($Connections == $i) {
            $BiggestPartner = $this
              ->getBiggestPartner($Key);
            if ($BiggestPartner != "") {
              $Ring = $this->Data[$BiggestPartner]["FreeZone"];
              $Weight = $this->Data[$BiggestPartner]["Weight"];
              $AngleDivision = 360 / $this->Data[$BiggestPartner]["Weight"];
              $Done = FALSE;
              $Tries = 0;
              while (!$Done && $Tries <= $Weight * 2) {
                $Tries++;
                $Angle = floor(rand(0, $Weight) * $AngleDivision);
                if (!isset($this->Data[$BiggestPartner]["Angular"][$Angle]) || !isset($this->Data[$BiggestPartner]["Angular"])) {
                  $this->Data[$BiggestPartner]["Angular"][$Angle] = $Angle;
                  $Done = TRUE;
                }
              }
              if (!$Done) {
                $Angle = rand(0, 360);
                $this->Data[$BiggestPartner]["Angular"][$Angle] = $Angle;
              }
              $X = cos(deg2rad($Angle)) * $Ring + $this->Data[$BiggestPartner]["X"];
              $Y = sin(deg2rad($Angle)) * $Ring + $this->Data[$BiggestPartner]["Y"];
              $this->Data[$Key]["X"] = $X;
              $this->Data[$Key]["Y"] = $Y;
            }
          }
        }
      }
    }
  }
  elseif ($Algorithm == ALGORITHM_CIRCULAR) {
    $MaxConnections = $MaxConnections + 1;
    for ($i = $MaxConnections; $i >= 0; $i--) {
      foreach ($this->Data as $Key => $Settings) {
        if ($Settings["Type"] == NODE_TYPE_CENTRAL) {
          $this->Data[$Key]["X"] = $CenterX;
          $this->Data[$Key]["Y"] = $CenterY;
        }
        if ($Settings["Type"] == NODE_TYPE_FREE) {
          if (isset($Settings["Connections"])) {
            $Connections = count($Settings["Connections"]);
          }
          else {
            $Connections = 0;
          }
          if ($Connections == $i) {
            $Ring = $MaxConnections - $Connections;
            $Angle = rand(0, 360);
            $X = cos(deg2rad($Angle)) * ($Ring * $this->RingSize) + $CenterX;
            $Y = sin(deg2rad($Angle)) * ($Ring * $this->RingSize) + $CenterY;
            $MedianOffset = $this
              ->getMedianOffset($Key, $X, $Y);
            $this->Data[$Key]["X"] = $MedianOffset["X"];
            $this->Data[$Key]["Y"] = $MedianOffset["Y"];
          }
        }
      }
    }
  }
  elseif ($Algorithm == ALGORITHM_RANDOM) {
    foreach ($this->Data as $Key => $Settings) {
      if ($Settings["Type"] == NODE_TYPE_FREE) {
        $this->Data[$Key]["X"] = $CenterX + rand(-20, 20);
        $this->Data[$Key]["Y"] = $CenterY + rand(-20, 20);
      }
      if ($Settings["Type"] == NODE_TYPE_CENTRAL) {
        $this->Data[$Key]["X"] = $CenterX;
        $this->Data[$Key]["Y"] = $CenterY;
      }
    }
  }
}