math.h/PI integration

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30990 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dc.h

@@ -31,6 +31,7 @@
 #include "wx/palette.h"
 #include "wx/list.h"            // we use wxList in inline functions
 #include "wx/dynarray.h"
+#include "wx/math.h"
 
 class WXDLLEXPORT wxDC;
 class WXDLLEXPORT wxDCBase;

include/wx/geometry.h

@@ -18,15 +18,11 @@
 
 #include "wx/defs.h"
 
-#ifndef wxUSE_GEOMETRY
-    #define wxUSE_GEOMETRY 0
-#endif
-
 #if wxUSE_GEOMETRY
 
 #include "wx/utils.h"
 #include "wx/gdicmn.h"
-#include <math.h>
+#include "wx/math.h"
 
 #ifdef __WXMSW__
     #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )

include/wx/math.h

@@ -18,6 +18,12 @@
 
 #include "wx/defs.h"
 
+#include <math.h>
+
+#ifndef M_PI
+    #define M_PI 3.1415926535897932384626433832795
+#endif
+
 // unknown __VISAGECC__, __SYMANTECCC__
 
 #if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__WATCOMC__)