Merge pull request #6300 from nyalldawson/opts

Misc optimizations for everything

Author: nyalldawson

python/core/geometry/qgsabstractgeometry.sip.in

@@ -596,8 +596,6 @@ Returns Java-style iterator for traversal of vertices of the geometry
 .. versionadded:: 3.0
 %End
 
-  protected:
-
     virtual QgsAbstractGeometry *createEmptyWithSameType() const = 0 /Factory/;
 %Docstring
 Creates a new geometry with the same class and same WKB type as the original and transfers ownership.
@@ -612,6 +610,8 @@ To create it, the geometry is default constructed and then the WKB is changed.
    Not available in Python bindings
 %End
 
+  protected:
+
     virtual bool hasChildGeometries() const;
 %Docstring
 Returns whether the geometry has any child geometries (false for point / curve, true otherwise)

python/core/geometry/qgscircularstring.sip.in

@@ -127,9 +127,11 @@ Sets the circular string's points
     virtual double yAt( int index ) const;
 
 
-  protected:
     virtual QgsCircularString *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual QgsRectangle calculateBoundingBox() const;
 
 

python/core/geometry/qgscompoundcurve.sip.in

@@ -160,12 +160,13 @@ Appends first point if not already closed.
     virtual double yAt( int index ) const;
 
 
+    virtual QgsCompoundCurve *createEmptyWithSameType() const /Factory/;
+
+
   protected:
 
     virtual QgsRectangle calculateBoundingBox() const;
 
-    virtual QgsCompoundCurve *createEmptyWithSameType() const /Factory/;
-
 
 };
 

python/core/geometry/qgscurvepolygon.sip.in

@@ -198,9 +198,12 @@ Returns approximate rotation angle for a vertex. Usually average angle between a
 
     virtual QgsCurvePolygon *toCurveType() const /Factory/;
 
-  protected:
+
     virtual QgsCurvePolygon *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual int childCount() const;
 
     virtual QgsAbstractGeometry *childGeometry( int index ) const;

python/core/geometry/qgsgeometrycollection.sip.in

@@ -176,9 +176,10 @@ Returns a geometry without curves. Caller takes ownership
 
 
 
-  protected:
     virtual QgsGeometryCollection *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
     virtual int childCount() const;
 
     virtual QgsAbstractGeometry *childGeometry( int index ) const;

python/core/geometry/qgslinestring.sip.in

@@ -290,9 +290,12 @@ of the curve.
     virtual bool convertTo( QgsWkbTypes::Type type );
 
 
-  protected:
+
     virtual QgsLineString *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual QgsRectangle calculateBoundingBox() const;
 
 

python/core/geometry/qgsmulticurve.sip.in

@@ -53,11 +53,10 @@ Returns a copy of the multi curve, where each component curve has had its line d
 
 
 
-  protected:
-
     virtual QgsMultiCurve *createEmptyWithSameType() const /Factory/;
 
 
+
 };
 
 

python/core/geometry/qgsmultilinestring.sip.in

@@ -49,9 +49,12 @@ Returns the geometry converted to the more generic curve type :py:class:`QgsMult
 :return: the converted geometry. Caller takes ownership*
 %End
 
-  protected:
+
     virtual QgsMultiLineString *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual bool wktOmitChildType() const;
 
 };

python/core/geometry/qgsmultipoint.sip.in

@@ -51,9 +51,12 @@ class QgsMultiPoint: QgsGeometryCollection
     virtual double segmentLength( QgsVertexId startVertex ) const;
 
 
-  protected:
+
     virtual QgsMultiPoint *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual bool wktOmitChildType() const;
 
 

python/core/geometry/qgsmultipolygon.sip.in

@@ -51,9 +51,11 @@ Returns the geometry converted to the more generic curve type :py:class:`QgsMult
     virtual QgsAbstractGeometry *boundary() const /Factory/;
 
 
-  protected:
     virtual QgsMultiPolygon *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual bool wktOmitChildType() const;
 
 };

python/core/geometry/qgsmultisurface.sip.in

@@ -45,7 +45,6 @@ class QgsMultiSurface: QgsGeometryCollection
 
 
 
-  protected:
     virtual QgsMultiSurface *createEmptyWithSameType() const /Factory/;
 
 

python/core/geometry/qgspoint.sip.in

@@ -419,9 +419,11 @@ Angle undefined. Always returns 0.0
 
 
 
-  protected:
     virtual QgsPoint *createEmptyWithSameType() const /Factory/;
 
+
+  protected:
+
     virtual int childCount() const;
 
     virtual QgsPoint childPoint( int index ) const;

python/core/geometry/qgspolygon.sip.in

@@ -62,11 +62,11 @@ negative if the point lies outside the polygon.
 %End
 
 
-  protected:
-
     virtual QgsPolygon *createEmptyWithSameType() const /Factory/;
 
 
+  protected:
+
 
 };
 /************************************************************************

python/core/geometry/qgsrectangle.sip.in

@@ -26,7 +26,10 @@ Examples are storing a layer extent or the current view extent of a map
 #include "qgsrectangle.h"
 %End
   public:
-    QgsRectangle( double xMin = 0, double yMin = 0, double xMax = 0, double yMax = 0 );
+
+    QgsRectangle(); // optimised constructor for null rectangle - no need to call normalize here
+
+    explicit QgsRectangle( double xMin, double yMin = 0, double xMax = 0, double yMax = 0 );
 %Docstring
 Constructor
 %End

python/core/geometry/qgstriangle.sip.in

@@ -425,11 +425,10 @@ Example:
 %End
 
 
-  protected:
-
     virtual QgsTriangle *createEmptyWithSameType() const /Factory/;
 
 
+
 };
 /************************************************************************
  * This file has been generated automatically from                      *

src/core/geometry/qgsabstractgeometry.h

@@ -617,8 +617,6 @@ class CORE_EXPORT QgsAbstractGeometry
      */
     QgsVertexIterator vertices() const;
 
-  protected:
-
     /**
      * Creates a new geometry with the same class and same WKB type as the original and transfers ownership.
      * To create it, the geometry is default constructed and then the WKB is changed.
@@ -628,6 +626,8 @@ class CORE_EXPORT QgsAbstractGeometry
      */
     virtual QgsAbstractGeometry *createEmptyWithSameType() const = 0 SIP_FACTORY;
 
+  protected:
+
     /**
      * Returns whether the geometry has any child geometries (false for point / curve, true otherwise)
      * \note used for vertex_iterator implementation

src/core/geometry/qgscircularstring.h

@@ -113,8 +113,10 @@ class CORE_EXPORT QgsCircularString: public QgsCurve
     }
 #endif
 
-  protected:
     QgsCircularString *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
+
     QgsRectangle calculateBoundingBox() const override;
 
   private:

src/core/geometry/qgscompoundcurve.h

@@ -142,10 +142,11 @@ class CORE_EXPORT QgsCompoundCurve: public QgsCurve
     }
 #endif
 
+    QgsCompoundCurve *createEmptyWithSameType() const override SIP_FACTORY;
+
   protected:
 
     QgsRectangle calculateBoundingBox() const override;
-    QgsCompoundCurve *createEmptyWithSameType() const override SIP_FACTORY;
 
   private:
     QVector< QgsCurve * > mCurves;

src/core/geometry/qgscurvepolygon.h

@@ -175,8 +175,11 @@ class CORE_EXPORT QgsCurvePolygon: public QgsSurface
       return nullptr;
     }
 #endif
-  protected:
+
     QgsCurvePolygon *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
+
     int childCount() const override;
     QgsAbstractGeometry *childGeometry( int index ) const override;
 

src/core/geometry/qgsgeometry.cpp

@@ -223,17 +223,20 @@ QgsGeometry QgsGeometry::fromMultiPolygonXY( const QgsMultiPolygonXY &multipoly
 
 QgsGeometry QgsGeometry::fromRect( const QgsRectangle &rect )
 {
-  QgsPolylineXY ring;
-  ring.append( QgsPointXY( rect.xMinimum(), rect.yMinimum() ) );
-  ring.append( QgsPointXY( rect.xMaximum(), rect.yMinimum() ) );
-  ring.append( QgsPointXY( rect.xMaximum(), rect.yMaximum() ) );
-  ring.append( QgsPointXY( rect.xMinimum(), rect.yMaximum() ) );
-  ring.append( QgsPointXY( rect.xMinimum(), rect.yMinimum() ) );
-
-  QgsPolygonXY polygon;
-  polygon.append( ring );
-
-  return fromPolygonXY( polygon );
+  std::unique_ptr< QgsLineString > ext = qgis::make_unique< QgsLineString >(
+      QVector< double >() << rect.xMinimum()
+      << rect.xMaximum()
+      << rect.xMaximum()
+      << rect.xMinimum()
+      << rect.xMinimum(),
+      QVector< double >() << rect.yMinimum()
+      << rect.yMinimum()
+      << rect.yMaximum()
+      << rect.yMaximum()
+      << rect.yMinimum() );
+  std::unique_ptr< QgsPolygon > polygon = qgis::make_unique< QgsPolygon >();
+  polygon->setExteriorRing( ext.release() );
+  return QgsGeometry( std::move( polygon ) );
 }
 
 QgsGeometry QgsGeometry::collectGeometry( const QVector< QgsGeometry > &geometries )
@@ -1258,8 +1261,16 @@ bool QgsGeometry::convertToMultiType()
     return false;
   }
 
-  multiGeom->addGeometry( d->geometry->clone() );
-  reset( std::move( geom ) );
+  //try to avoid cloning existing geometry whenever we can
+
+  //want to see a magic trick?... gather round kiddies...
+  detach(); // maybe a clone, hopefully not if we're the only ref to the private data
+  // now we cheat a bit and steal the private geometry and add it direct to the multigeom
+  // we can do this because we're the only ref to this geometry, guaranteed by the detach call above
+  multiGeom->addGeometry( d->geometry.release() );
+  // and replace it with the multi geometry.
+  // TADA! a clone free conversion in some cases
+  d->geometry = std::move( geom );
   return true;
 }
 

src/core/geometry/qgsgeometrycollection.h

@@ -159,8 +159,9 @@ class CORE_EXPORT QgsGeometryCollection: public QgsAbstractGeometry
     }
 #endif
 
-  protected:
     QgsGeometryCollection *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
     int childCount() const override;
     QgsAbstractGeometry *childGeometry( int index ) const override;
 

src/core/geometry/qgslinestring.h

@@ -253,8 +253,11 @@ class CORE_EXPORT QgsLineString: public QgsCurve
       return nullptr;
     }
 #endif
-  protected:
+
     QgsLineString *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
+
     QgsRectangle calculateBoundingBox() const override;
 
   private:

src/core/geometry/qgsmulticurve.h

@@ -71,10 +71,9 @@ class CORE_EXPORT QgsMultiCurve: public QgsGeometryCollection
     }
 #endif
 
-  protected:
-
     QgsMultiCurve *createEmptyWithSameType() const override SIP_FACTORY;
 
+
 };
 
 // clazy:excludeall=qstring-allocations

src/core/geometry/qgsmultilinestring.h

@@ -62,8 +62,11 @@ class CORE_EXPORT QgsMultiLineString: public QgsMultiCurve
       return nullptr;
     }
 #endif
-  protected:
+
     QgsMultiLineString *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
+
     bool wktOmitChildType() const override;
 };
 

src/core/geometry/qgsmultipoint.h

@@ -62,8 +62,11 @@ class CORE_EXPORT QgsMultiPoint: public QgsGeometryCollection
       return nullptr;
     }
 #endif
-  protected:
+
     QgsMultiPoint *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
+
     bool wktOmitChildType() const override;
 
 };

src/core/geometry/qgsmultipolygon.h

@@ -63,8 +63,10 @@ class CORE_EXPORT QgsMultiPolygon: public QgsMultiSurface
     }
 #endif
 
-  protected:
     QgsMultiPolygon *createEmptyWithSameType() const override SIP_FACTORY;
+
+  protected:
+
     bool wktOmitChildType() const override;
 };
 

src/core/geometry/qgsmultisurface.h

@@ -65,7 +65,6 @@ class CORE_EXPORT QgsMultiSurface: public QgsGeometryCollection
     }
 #endif
 
-  protected:
     QgsMultiSurface *createEmptyWithSameType() const override SIP_FACTORY;
 
 };