<?php
//
// Copyright (C) 2004-2006 Autodesk, Inc.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of version 2.1 of the GNU Lesser
// General Public License as published by the Free Software Foundation.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
//
?>
<?php
require_once('layerinfo.php');
require_once('property.php');
require_once '../JSON.php';
class Theme
{
private $args = null;
private $site = null;
public $distNameArray = array("Individual", "Equal", "Standard Deviation", "Quantile", "Jenks (Natural Breaks)");
public $distValueArray = array("INDIV_DIST", "EQUAL_DIST", "STDEV_DIST", "QUANT_DIST", "JENK_DIST");
function __construct($args)
{
$this->args = $args;
$this->site = new MgSiteConnection();
$this->site->Open(new MgUserInformation($args['SESSION']));
}
function GetMapLayerNames()
{
$layerNames = array();
$map = new MgMap($this->site);
$map->Open($this->args['MAPNAME']);
$layers = $map->GetLayers();
for ($i = 0; $i < $layers->GetCount(); $i++)
{
$layer = $layers->GetItem($i);
if((substr($layer->GetName(), 0, 1) != "_") && (substr(strtoupper($layer->GetFeatureSourceId()), 0, 7) != "SESSION"))
{
$resId = new MgResourceIdentifier($layer->GetFeatureSourceId());
$schemaClass = explode(':', $layer->GetFeatureClassName());
$classDef = $layer->GetClassDefinition();
$clsProps = $classDef->GetProperties();
$propDef = $clsProps->GetItem($layer->GetFeatureGeometryName());
if($propDef->GetPropertyType() == MgFeaturePropertyType::GeometricProperty)
{
if ($propDef->GetGeometryTypes() == MgFeatureGeometricType::Surface)
{
$layerNames[$layer->GetName()] = $layer->GetLegendLabel();
}
}
}
}
asort($layerNames);
return $layerNames;
}
function GetLayerInfo()
{
$properties = array();
$scaleRanges = array();
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$map = new MgMap($this->site);
$map->Open($this->args['MAPNAME']);
$layers = $map->GetLayers();
$layer = $layers->GetItem($this->args['LAYERNAME']);
// First get a list of all of the Feature Class properties that can be used for theming.
$classDef = $layer->GetClassDefinition();
for ($i = 0; $i < $classDef->GetProperties()->GetCount(); $i++)
{
$propertyDef = $classDef->GetProperties()->GetItem($i);
if ($propertyDef->GetPropertyType() == MgFeaturePropertyType::DataProperty)
{
$dataType = $propertyDef->GetDataType();
$distroTypes = $this->GetDistributionsForDataType($dataType);
if (count($distroTypes) > 0)
{
array_push($properties, new Property($propertyDef->GetName(), $dataType, $distroTypes));
}
}
}
// Next get a list of all of the layers scale ranges.
$layerDefResId = $layer->GetLayerDefinition();
$byteReader = $resourceService->GetResourceContent($layerDefResId);
$doc = new DOMDocument();
$doc->loadXML($byteReader->ToString());
$nodeList = $doc->getElementsByTagName('VectorScaleRange');
foreach ($nodeList as $node)
{
$range = null;
$minNodeList = $node->getElementsByTagName('MinScale');
if ($minNodeList->length > 0)
$range = $minNodeList->item(0)->nodeValue;
else
$range = '0';
$maxNodeList = $node->getElementsByTagName('MaxScale');
if ($maxNodeList->length > 0)
$range .= ' - ' . $maxNodeList->item(0)->nodeValue;
else
$range .= ' - Infinity';
array_push($scaleRanges, $range);
}
return new LayerInfo($properties, $scaleRanges);
}
function GetPropertyMinMaxCount()
{
$map = new MgMap($this->site);
$map->Open($this->args['MAPNAME']);
$layer = $map->GetLayers()->GetItem($this->args['LAYERNAME']);
$featureService = $this->site->CreateService(MgServiceType::FeatureService);
$resId = new MgResourceIdentifier($layer->GetFeatureSourceId());
// Note: Should be able to do this:
//
// $minValue = 0;
// $maxValue = 0;
// $count = 0;
//
// $aggregateOptions = new MgFeatureAggregateOptions();
// $aggregateOptions->AddComputedProperty('min', 'Min(' . $this->args['PROPERTYNAME'] . ')');
// $aggregateOptions->AddComputedProperty('max', 'Max(' . $this->args['PROPERTYNAME'] . ')');
// $aggregateOptions->AddComputedProperty('count', 'Count(' . $this->args['PROPERTYNAME'] . ')');
//
// $dataReader = $featureService->SelectAggregate($resId, $layer->GetFeatureClassName(), $aggregateOptions);
//
// if ($dataReader->ReadNext())
// {
// $minValue = $this->GetFeaturePropertyValue($dataReader, 'min');
// $maxValue = $this->GetFeaturePropertyValue($dataReader, 'max');
// $count = $this->GetFeaturePropertyValue($dataReader, 'count');
// }
// $dataReader->Close();
//
// However due to a bug, Min/Max do not work on string types, so we have to do this:
unset($minValue);
unset($maxValue);
$count = 0;
$queryOptions = new MgFeatureQueryOptions();
$queryOptions->AddFeatureProperty($this->args['PROPERTYNAME']);
$featureReader = $layer->SelectFeatures($queryOptions);
while($featureReader->ReadNext())
{
$value = $this->GetFeaturePropertyValue($featureReader, $this->args['PROPERTYNAME']);
if ($value != null)
{
if(!isset($maxValue) && !isset($minValue))
{
$maxValue = $value;
$minValue = $value;
}
if($value > $maxValue)
$maxValue = $value;
if($value < $minValue)
$minValue = $value;
}
$count++;
}
$featureReader->Close();
if(!isset($maxValue) && !isset($minValue))
{
$maxValue="";
$minValue="";
}
return array($minValue, $maxValue, $count);
}
function ApplyTheme()
{
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$map = new MgMap($this->site);
$map->Open($this->args['MAPNAME']);
$layers = $map->GetLayers();
$layer = $layers->GetItem($this->args['LAYERNAME']);
$layerDefResId = $layer->GetLayerDefinition();
$byteReader = $resourceService->GetResourceContent($layerDefResId);
// Load the Layer Definition and Navigate to the specified <VectorScaleRange>
$doc = new DOMDocument();
$doc->loadXML($byteReader->ToString());
$nodeList = $doc->getElementsByTagName('VectorScaleRange');
$vectorScaleRangecElement = $nodeList->item($this->args['SCALERANGEINDEX']);
$areaTypeStyle = $vectorScaleRangecElement->getElementsByTagName('AreaTypeStyle')->item(0);
// Remove any existing <AreaRule> elements.
$areaRuleList = $areaTypeStyle->getElementsByTagName('AreaRule');
$ruleCount = $areaRuleList->length;
for($index = 0; $index < $ruleCount; $index++)
{
$areaTypeStyle->removeChild($areaRuleList->item(0));
}
// Now create the new <AreaRule> elements.
$areaRuleTemplate = file_get_contents("templates/arearuletemplate.xml");
$aggregateOptions = new MgFeatureAggregateOptions();
$portion = 0.0;
$increment = ($this->args['NUMRULES'] > 1) ? $increment = 1.0 / ($this->args['NUMRULES'] - 1) : 1.0;
if ($this->args['DISTRO'] == 'INDIV_DIST')
{
$aggregateOptions->AddFeatureProperty($this->args['PROPERTYNAME']);
$aggregateOptions->SelectDistinct(true);
$dataReader = $layer->SelectAggregate($aggregateOptions);
while ($dataReader->ReadNext())
{
$value = $this->GetFeaturePropertyValue($dataReader, $this->args['PROPERTYNAME']);
$filterText = '"' . $this->args['PROPERTYNAME'] . '" = ';
if ($this->args['DATATYPE'] == MgPropertyType::String)
$filterText .= "'" . $value . "'";
else
$filterText .= $value;
$areaRuleXML = sprintf($areaRuleTemplate,
$this->args['PROPERTYNAME'] . ': ' . $value,
$filterText,
$this->InterpolateColor($portion, $this->args['FILLFROM'], $this->args['FILLTO'], $this->args['FILLTRANS']),
$this->InterpolateColor($portion, $this->args['LINEFROM'], $this->args['LINETO'], 0));
$areaDoc = new DOMDocument();
$areaDoc->loadXML($areaRuleXML);
$areaNode = $doc->importNode($areaDoc->documentElement, true);
$areaTypeStyle->appendChild($areaNode);
$portion += $increment;
}
$dataReader->Close();
}
else
{
$values = array();
$aggregateOptions->AddComputedProperty('THEME_VALUE',
$this->args['DISTRO'] . '("' . $this->args['PROPERTYNAME'] . '",' . $this->args['NUMRULES'] . ',' . $this->args['MINVALUE'] . ',' . $this->args['MAXVALUE'] . ')');
$dataReader = $layer->SelectAggregate($aggregateOptions);
while ($dataReader->ReadNext())
{
$value = $this->GetFeaturePropertyValue($dataReader, 'THEME_VALUE');
array_push($values, $value);
}
$dataReader->Close();
for ($i = 0; $i < count($values) - 1; $i++)
{
$filterText = '"' . $this->args['PROPERTYNAME'] . '" >= ' . $values[$i] . ' AND "' . $this->args['PROPERTYNAME'];
if ($i == count($values) - 1)
$filterText .= '" <= ' . $values[$i + 1];
else
$filterText .= '" < ' . $values[$i + 1];
$areaRuleXML = sprintf($areaRuleTemplate,
$this->args['PROPERTYNAME'] . ': ' . $values[$i] . ' - ' . $values[$i + 1],
$filterText,
$this->InterpolateColor($portion, $this->args['FILLFROM'], $this->args['FILLTO'], $this->args['FILLTRANS']),
$this->InterpolateColor($portion, $this->args['LINEFROM'], $this->args['LINETO'], 0));
$areaDoc = new DOMDocument();
$areaDoc->loadXML($areaRuleXML);
$areaNode = $doc->importNode($areaDoc->documentElement, true);
$areaTypeStyle->appendChild($areaNode);
$portion += $increment;
}
}
// Now save our new layer definition to the session and add it to the map.
$layerDefinition = $doc->saveXML();
$uniqueName = $this->MakeUniqueLayerName($map, $this->args['LAYERNAME'], $this->args['THEMENAME']);
$legendLabel = $layer->GetLegendLabel();
if (strlen(trim($this->args['THEMENAME'])) > 0 )
$legendLabel .= ' (' . $this->args['THEMENAME'] . ')';
$layerResId = new MgResourceIdentifier('Session:' . $this->args['SESSION'] . '//' . $uniqueName . '.LayerDefinition');
$byteSource = new MgByteSource($layerDefinition, strlen($layerDefinition));
$resourceService->SetResource($layerResId, $byteSource->GetReader(), null);
$newLayer = new MgLayer($layerResId, $resourceService);
$newLayer->SetName($uniqueName);
$newLayer->SetLegendLabel($legendLabel);
$newLayer->SetDisplayInLegend($layer->GetDisplayInLegend());
$newLayer->SetVisible(true);
$newLayer->SetSelectable($layer->GetLegendLabel());
$layers->Insert($layers->IndexOf($layer), $newLayer);
$map->Save();
return $uniqueName;
}
private function InterpolateColor($portion, $startColor, $endColor, $percentTransparent)
{
$result = sprintf("%02x", 255 * (100 - $percentTransparent) / 100);
if ($startColor == $endColor)
return $result . $startColor;
$red = $this->CalculateRGB($portion, substr($startColor, 0, 2), substr($endColor, 0, 2));
$result = (strlen(dechex($red)) == 1) ? $result . "0" . dechex($red) : $result . dechex($red);
$green = $this->CalculateRGB($portion, substr($startColor, 2, 2), substr($endColor, 2, 2));
$result = (strlen(dechex($green)) == 1) ? $result . "0" . dechex($green) : $result . dechex($green);
$blue = $this->CalculateRGB($portion, substr($startColor, 4, 2), substr($endColor, 4, 2));
$result = (strlen(dechex($blue)) == 1) ? $result . "0" . dechex($blue) : $result . dechex($blue);
return $result;
}
private function CalculateRGB($portion, $startRGB, $endRGB)
{
return (hexdec($startRGB) + ($portion * (hexdec($endRGB) - hexdec($startRGB))));
}
private function GetFeaturePropertyValue($featureReader, $name)
{
$value = '';
$propertyType = $featureReader->GetPropertyType($name);
switch($propertyType)
{
case MgPropertyType::Boolean :
$value = $featureReader->GetBoolean($name);
break;
case MgPropertyType::Byte :
$value = $featureReader->GetByte($name);
break;
case MgPropertyType::Single :
$value = $featureReader->GetSingle($name);
break;
case MgPropertyType::Double :
$value = $featureReader->GetDouble($name);
break;
case MgPropertyType::Int16 :
$value = $featureReader->GetInt16($name);
break;
case MgPropertyType::Int32 :
$value = $featureReader->GetInt32($name);
break;
case MgPropertyType::Int64 :
$value = $featureReader->GetInt64($name);
break;
case MgPropertyType::String :
$value = $featureReader->GetString($name);
break;
case MgPropertyType::DateTime :
case MgPropertyType::Null :
case MgPropertyType::Blob :
case MgPropertyType::Clob :
case MgPropertyType::Feature :
case MgPropertyType::Geometry :
case MgPropertyType::Raster :
$value = '[unsupported data type]';
break;
}
return $value;
}
private function GetDistributionsForDataType($type)
{
$distros = array();
switch($type)
{
case MgPropertyType::String:
array_push($distros, 0);
break;
case MgPropertyType::Byte :
case MgPropertyType::Int16 :
case MgPropertyType::Int32 :
case MgPropertyType::Int64 :
array_push($distros, 0, 1, 2, 3, 4);
break;
case MgPropertyType::Single :
case MgPropertyType::Double :
array_push($distros, 1, 2, 3, 4);
break;
case MgPropertyType::Boolean:
case MgPropertyType::DateTime:
case MgPropertyType::Blob:
case MgPropertyType::Clob:
case MgPropertyType::Byte:
case MgPropertyType::Feature:
case MgPropertyType::Geometry:
case MgPropertyType::Null:
break;
}
return $distros;
}
private function MakeUniqueLayerName($map, $layerName, $themeName)
{
$desiredName = "_" . $layerName . $themeName;
$uniqueName = $desiredName;
$index = 1;
while ($map->GetLayers()->Contains($uniqueName))
{
$uniqueName = $desiredName . $index;
$index++;
}
return $uniqueName;
}
}
?>