Const correctness for QgsPoint::azimuth

Author: nyalldawson

python/core/qgspoint.sip

@@ -148,7 +148,7 @@ class QgsPoint
     double sqrDistToSegment( double x1, double y1, double x2, double y2, QgsPoint& minDistPoint /Out/, double epsilon = DEFAULT_SEGMENT_EPSILON ) const;
 
     /** Calculates azimuth between this point and other one (clockwise in degree, starting from north) */
-    double azimuth( const QgsPoint& other );
+    double azimuth( const QgsPoint& other ) const;
 
     /** Compares this point with another point with a fuzzy tolerance
      * @param other point to compare with

src/core/qgspoint.cpp

@@ -352,7 +352,7 @@ double QgsPoint::sqrDist( const QgsPoint& other ) const
   return sqrDist( other.x(), other.y() );
 }
 
-double QgsPoint::azimuth( const QgsPoint& other )
+double QgsPoint::azimuth( const QgsPoint& other ) const
 {
   double dx = other.x() - m_x;
   double dy = other.y() - m_y;

src/core/qgspoint.h

@@ -189,7 +189,7 @@ class CORE_EXPORT QgsPoint
     double sqrDistToSegment( double x1, double y1, double x2, double y2, QgsPoint& minDistPoint, double epsilon = DEFAULT_SEGMENT_EPSILON ) const;
 
     /** Calculates azimuth between this point and other one (clockwise in degree, starting from north) */
-    double azimuth( const QgsPoint& other );
+    double azimuth( const QgsPoint& other ) const;
 
     /** Compares this point with another point with a fuzzy tolerance
      * @param other point to compare with