use G_PI instead of M_PI.

2002-12-20  Sven Neumann  <sven@gimp.org>

	* examples/gtkdial/gtkdial.c: use G_PI instead of M_PI.

diff --git a/examples/gtkdial/gtkdial.c b/examples/gtkdial/gtkdial.c
index 2ca738edb4e1ba87a77ea53e9486a1d7737e593d..f557800d014fbe989d952781eba2b0bab7a83059 100644 (file)
--- a/examples/gtkdial/gtkdial.c
+++ b/examples/gtkdial/gtkdial.c
@@ -353,7 +353,7 @@ gtk_dial_expose (GtkWidget      *widget,
   if ((upper - lower) == 0)
     return FALSE;
 
-  increment = (100*M_PI) / (dial->radius*dial->radius);
+  increment = (100*G_PI) / (dial->radius*dial->radius);
 
   inc = (upper - lower);
 
@@ -363,7 +363,7 @@ gtk_dial_expose (GtkWidget      *widget,
 
   for (i = 0; i <= inc; i++)
     {
-      theta = ((gfloat)i*M_PI / (18*inc/24.) - M_PI/6.);
+      theta = ((gfloat)i*G_PI / (18*inc/24.) - G_PI/6.);
 
       if ((theta - last) < (increment))
        continue;     
@@ -558,17 +558,17 @@ gtk_dial_update_mouse (GtkDial *dial, gint x, gint y)
   old_value = dial->adjustment->value;
   dial->angle = atan2(yc-y, x-xc);
 
-  if (dial->angle < -M_PI/2.)
-    dial->angle += 2*M_PI;
+  if (dial->angle < -G_PI/2.)
+    dial->angle += 2*G_PI;
 
-  if (dial->angle < -M_PI/6)
-    dial->angle = -M_PI/6;
+  if (dial->angle < -G_PI/6)
+    dial->angle = -G_PI/6;
 
-  if (dial->angle > 7.*M_PI/6.)
-    dial->angle = 7.*M_PI/6.;
+  if (dial->angle > 7.*G_PI/6.)
+    dial->angle = 7.*G_PI/6.;
 
-  dial->adjustment->value = dial->adjustment->lower + (7.*M_PI/6 - dial->angle) *
-    (dial->adjustment->upper - dial->adjustment->lower) / (4.*M_PI/3.);
+  dial->adjustment->value = dial->adjustment->lower + (7.*G_PI/6 - dial->angle) *
+    (dial->adjustment->upper - dial->adjustment->lower) / (4.*G_PI/3.);
 
   if (dial->adjustment->value != old_value)
     {
@@ -615,7 +615,7 @@ gtk_dial_update (GtkDial *dial)
       g_signal_emit_by_name (GTK_OBJECT (dial->adjustment), "value_changed");
     }
 
-  dial->angle = 7.*M_PI/6. - (new_value - dial->adjustment->lower) * 4.*M_PI/3. /
+  dial->angle = 7.*G_PI/6. - (new_value - dial->adjustment->lower) * 4.*G_PI/3. /
     (dial->adjustment->upper - dial->adjustment->lower);
 
   gtk_widget_queue_draw (GTK_WIDGET (dial));