Restructuring make, adding automatic "make dep" support.

[flightgear.git] / Main / GLmain.c

diff --git a/Main/GLmain.c b/Main/GLmain.c
index 23c5245a61d8400675cf41a9550216a0c427609f..02cbcb70850d654f503c8908dd120d3e4676e8e7 100644 (file)
--- a/Main/GLmain.c
+++ b/Main/GLmain.c
@@ -47,10 +47,19 @@
 #define DEG_TO_RAD       0.017453292
 #define RAD_TO_DEG       57.29577951
 
+#ifndef M_PI
+#define M_PI        3.14159265358979323846     /* pi */
+#endif
+
 #ifndef PI2                                     
 #define PI2  (M_PI + M_PI)
 #endif                                                           
 
+
+#ifndef M_PI_2
+#define M_PI_2      1.57079632679489661923     /* pi/2 */
+#endif
+
 /* This is a record containing all the info for the aircraft currently
    being operated */
 struct aircraft_params current_aircraft;
@@ -264,7 +273,11 @@ void fgUpdateTimeDepCalcs(int multi_loop) {
 
 void fgInitTimeDepCalcs() {
     /* initialize timer */
+
+#ifdef USE_ITIMER
     fgTimerInit( 1.0 / DEFAULT_TIMER_HZ, fgUpdateTimeDepCalcs );
+#endif USE_ITIMER
+
 }
 
 
@@ -407,6 +420,8 @@ int main( int argc, char *argv[] ) {
 
     f = &current_aircraft.flight;
 
+    printf("Flight Gear:  prototype code to test OpenGL, LaRCsim, and VRML\n\n");
+
     #ifdef GLUT
       /* initialize GLUT */
       glutInit(&argc, argv);
@@ -544,9 +559,15 @@ int main( int argc, char *argv[] ) {
 
 
 /* $Log$
-/* Revision 1.21  1997/06/22 21:44:41  curt
-/* Working on intergrating the VRML (subset) parser.
+/* Revision 1.23  1997/06/26 19:08:33  curt
+/* Restructuring make, adding automatic "make dep" support.
 /*
+ * Revision 1.22  1997/06/25 15:39:47  curt
+ * Minor changes to compile with rsxnt/win32.
+ *
+ * Revision 1.21  1997/06/22 21:44:41  curt
+ * Working on intergrating the VRML (subset) parser.
+ *
  * Revision 1.20  1997/06/21 17:12:53  curt
  * Capitalized subdirectory names.
  *