[build] Use pi constant from boost, switch back to -std=c++0x

CMakeLists.txt

@@ -64,7 +64,7 @@ ENDIF(EXISTS "${PROJECT_SOURCE_DIR}/gmock" AND IS_DIRECTORY "${PROJECT_SOURCE_DI
 
 include_directories(include ${Boost_INCLUDE_DIRS} ${LOG4CPP_INCLUDE_DIRS} ${SigC++_INCLUDE_DIRS} ${Freetype_INCLUDE_DIRS} ${Cairomm_INCLUDE_DIRS})
 
-ADD_DEFINITIONS("-std=gnu++0x") # gnu is required for e.g. M_PI to be defined
+ADD_DEFINITIONS("-std=c++0x")
 ADD_DEFINITIONS(-DBOOST_TEST_DYN_LINK)
 ADD_DEFINITIONS(${LOG4CPP_DEFINITIONS})
 ADD_DEFINITIONS(-DStatistic_Activated)

src/server/renderer/node_renderer.cpp

@@ -30,6 +30,7 @@
  */
 
 #include <boost/unordered_map.hpp>
+#include <boost/math/constants/constants.hpp>
 
 #include "general/geodata.hpp"
 #include "general/node.hpp"
@@ -62,7 +63,7 @@ void NodeRenderer::casing(const Cairo::RefPtr<Cairo::Context>& cr)
 
 	cr->save();
 
-	cr->arc(location.x, location.y, s->width/2.0 + s->casing_width, 0, 2*M_PI);
+	cr->arc(location.x, location.y, s->width/2.0 + s->casing_width, 0, 2*boost::math::constants::pi<double>());
 
 	cr->set_source_color(s->casing_color);
 
@@ -78,7 +79,7 @@ void NodeRenderer::stroke(const Cairo::RefPtr<Cairo::Context>& cr)
 
 	cr->save();
 
-	cr->arc(location.x, location.y, s->width/2.0, 0, 2*M_PI);
+	cr->arc(location.x, location.y, s->width/2.0, 0, 2*boost::math::constants::pi<double>());
 
 	cr->set_source_color(s->color);
 

src/server/renderer/renderer.cpp

@@ -30,6 +30,7 @@
  */
 #include "config.hpp"
 #include <boost/unordered_map.hpp>
+#include <boost/math/constants/constants.hpp>
 #include <sigc++/bind.h>
 
 #include "utils/transform.hpp"
@@ -431,9 +432,9 @@ void Renderer::renderShields(const Cairo::RefPtr<Cairo::Context>& cr,
 		}
 		if (s->shield_shape == Style::ShieldShape::ROUNDED) {
 			cr->arc(x0 + height/2.0, y0 + height/2.0,
-					height/2.0, M_PI/2.0, 3.0*M_PI/2.0);
+					height/2.0, boost::math::constants::pi<double>()/2.0, 3.0*boost::math::constants::pi<double>()/2.0);
 			cr->arc(x0 + width - height/2.0, y0 + height/2.0,
-					height/2.0, 3.0*M_PI/2.0, M_PI/2.0);
+					height/2.0, 3.0*boost::math::constants::pi<double>()/2.0, boost::math::constants::pi<double>()/2.0);
 			cr->close_path();
 		} else
 			cr->rectangle(x0, y0, width, height);

src/server/renderer/way_renderer.cpp

@@ -21,6 +21,7 @@
 
 
 #include <boost/unordered_map.hpp>
+#include <boost/math/constants/constants.hpp>
 
 #include "general/geodata.hpp"
 #include "general/way.hpp"
@@ -83,7 +84,7 @@ bool WayRenderer::getTextPosition(Cairo::Path* transformedPath, int width, Float
 					if (abs(dx) > 0)
 						angle = atan(dy/dx);
 					else
-						angle = -M_PI/2.0;
+						angle = -boost::math::constants::pi<double>()/2.0;
 					best.x = current.point.x - dx * 0.5;
 					best.y = current.point.y - dy * 0.5;
 					bestDiff = diff;

src/utils/transform.cpp

@@ -29,6 +29,7 @@
  * =====================================================================================
  */
 
+#include <boost/math/constants/constants.hpp>
 #include <cmath>
 
 #include "settings.hpp"
@@ -85,10 +86,10 @@ void mercatorToTile(coord_t x, coord_t y, int zoom, int& tx, int& ty)
  */
 void projectMercator(const FloatPoint& p, coord_t& x, coord_t& y)
 {
-	double lon = p.lon / 180.0 * M_PI;
-	double lat = p.lat / 180.0 * M_PI;
-	x = lon / M_PI * NORM;
-	y = log(tan(M_PI / 4.0 + lat / 2.0)) / M_PI * NORM;
+	double lon = p.lon / 180.0 * boost::math::constants::pi<double>();
+	double lat = p.lat / 180.0 * boost::math::constants::pi<double>();
+	x = lon / boost::math::constants::pi<double>() * NORM;
+	y = log(tan(boost::math::constants::pi<double>() / 4.0 + lat / 2.0)) / boost::math::constants::pi<double>() * NORM;
 }
 
 /**
@@ -101,6 +102,6 @@ void projectMercator(const FloatPoint& p, coord_t& x, coord_t& y)
 void inverseMercator(const FixedPoint& p, double& lat, double& lon)
 {
 	lon = p.x / NORM * 180.0;
-	lat = atan(sinh(p.y / NORM * M_PI)) / M_PI * 180.0;
+	lat = atan(sinh(p.y / NORM * boost::math::constants::pi<double>())) / boost::math::constants::pi<double>() * 180.0;
 }