X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCockpit%2Fhud_ladr.cxx;h=2e9524ac380205e879d2eeea612e711ec2d9e08c;hb=29275ce1ecf9c4ea302aacca8c5ae5d4d3319a17;hp=081cb7c787f6938fb82b2dab78ecefdb212bce47;hpb=af80c2080b0049560cd250bef4f093abc200db94;p=flightgear.git

diff --git a/src/Cockpit/hud_ladr.cxx b/src/Cockpit/hud_ladr.cxx
index 081cb7c78..2e9524ac3 100644
--- a/src/Cockpit/hud_ladr.cxx
+++ b/src/Cockpit/hud_ladr.cxx
@@ -276,8 +276,8 @@ void HudLadder :: draw( void )
 	//  velocity vector
 	glBegin(GL_LINE_LOOP);  // Use polygon to approximate a circle 
         for(count=0; count<50; count++) {             
-	    cosine = 6 * cos(count * 2 * M_PI/50.0); 
-            sine =   6 * sin(count * 2 * M_PI/50.0); 
+	    cosine = 6 * cos(count * 2 * FG_PI/50.0); 
+            sine =   6 * sin(count * 2 * FG_PI/50.0); 
             glVertex2f(cosine+vel_x, sine+vel_y);
 	}     
 	glEnd();