Add mapserver qgsspatialfilter

Author: rldhont

src/mapserver/qgsspatialfilter.cpp

@@ -0,0 +1,77 @@
+/***************************************************************************
+                              qgsspatialfilter.cpp
+                              -----------------------
+  begin                : Oct 19, 2012
+  copyright            : (C) 2012 by René-Luc D'Hont
+  email                : rldhont at 3liz dot com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgsspatialfilter.h"
+#include "qgsgeometry.h"
+#include <QDomElement>
+
+QgsSpatialFilter::QgsSpatialFilter(): QgsFilter(), mSpatialType( QgsSpatialFilter::UNKNOWN ), mGeom( 0 )
+{
+}
+
+QgsSpatialFilter::QgsSpatialFilter( SPATIAL_TYPE st, QgsGeometry* geom ): QgsFilter(), mSpatialType( st ), mGeom( geom )
+{
+}
+
+QgsSpatialFilter::~QgsSpatialFilter()
+{
+  delete mGeom;
+}
+
+bool QgsSpatialFilter::evaluate( const QgsFeature& f ) const
+{
+  if ( !mGeom )
+  {
+    return true;
+  }
+
+  QgsGeometry* geom = ( new QgsFeature( f ) )->geometry();
+  switch ( mSpatialType )
+  {
+    case BBOX:
+      return geom->intersects( mGeom->boundingBox() );
+      break;
+    case CONTAINS:
+      return geom->contains( mGeom );
+      break;
+    case CROSSES:
+      return geom->crosses( mGeom );
+      break;
+    case DISJOINT:
+      return geom->disjoint( mGeom );
+      break;
+    case EQUALS:
+      return geom->equals( mGeom );
+      break;
+    case INTERSECTS:
+      return geom->intersects( mGeom );
+      break;
+    case OVERLAPS:
+      return geom->overlaps( mGeom );
+      break;
+    case TOUCHES:
+      return geom->touches( mGeom );
+      break;
+    case WITHIN:
+      return geom->within( mGeom );
+      break;
+    case UNKNOWN:
+    default:
+      break;
+  }
+  return false;
+}

src/mapserver/qgsspatialfilter.h

@@ -0,0 +1,73 @@
+/***************************************************************************
+                              qgsspatialfilter.h
+                              ---------------------
+  begin                : Oct 19, 2012
+  copyright            : (C) 2012 by René-Luc D'Hont
+  email                : rldhont at 3liz dot com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSSPATIALFILTER_H
+#define QGSSPATIALFILTER_H
+
+#include <qgsfilter.h>
+#include <qgsgeometry.h>
+#include <QDomElement>
+
+/**A filter for spatial filter (bbox, intersects, within, disjoint)
+Sample xml fragment:
+<Filter xmlns="http://www.opengis.net/ogc">
+<BBOX>
+<gml:Box xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:4326">
+<gml:coordinates decimal="." cs="," ts=" ">135.45,-47.425 157.95,-36.175</gml:coordinates>
+</gml:Box>
+</BBOX>
+</Filter>
+*/
+class QgsSpatialFilter: public QgsFilter
+{
+  public:
+    enum SPATIAL_TYPE
+    {
+      BBOX,
+      CONTAINS,
+      CROSSES,
+      EQUALS,
+      DISJOINT,
+      INTERSECTS,
+      OVERLAPS,
+      TOUCHES,
+      WITHIN,
+      UNKNOWN
+    };
+    
+    QgsSpatialFilter();
+    QgsSpatialFilter( SPATIAL_TYPE st, QgsGeometry* geom );
+    ~QgsSpatialFilter();
+
+    /**Evaluates a feature against the filter.
+     @return true if the filter applies for the feature*/
+    bool evaluate( const QgsFeature& f ) const;
+
+    //setters and getters
+    SPATIAL_TYPE spatialType() const {return mSpatialType;}
+    void setSpatialType( SPATIAL_TYPE t ) {mSpatialType = t;}
+
+    //setters and getters
+    QgsGeometry* geometry() const {return mGeom;}
+    void setGeometry( QgsGeometry* g ) {mGeom = g;}
+
+  private:
+    SPATIAL_TYPE mSpatialType;
+    QgsGeometry* mGeom;
+};
+
+#endif //QGSSPATIALFILTER_H