X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-studio%2Ftrunk%2Fsrc%2Fgtkmm%2Fduck.cpp;h=63bebe7099844e06e48f2c058ca71f00adf43c02;hb=75d9450af83a2fc392104c537aab2aed2f3d1142;hp=ec67e1650f715c8aaaf3a7d34211223442bb83d9;hpb=024303231c004a2c254bed75a078e01227cdedb7;p=synfig.git

diff --git a/synfig-studio/trunk/src/gtkmm/duck.cpp b/synfig-studio/trunk/src/gtkmm/duck.cpp
index ec67e16..63bebe7 100644
--- a/synfig-studio/trunk/src/gtkmm/duck.cpp
+++ b/synfig-studio/trunk/src/gtkmm/duck.cpp
@@ -32,6 +32,8 @@
 #include "duck.h"
 #include <ETL/misc>
 
+#include "general.h"
+
 #endif
 
 /* === U S I N G =========================================================== */
@@ -193,9 +195,11 @@ Duck::set_sub_trans_point(const synfig::Point &x)
 	{
 		Angle old_angle = get_point().angle();
 		set_point((x-get_sub_trans_origin())/get_scalar());
-		Angle new_angle = get_point().angle();
+		Angle change = get_point().angle() - old_angle;
+		while (change < Angle::deg(-180)) change += Angle::deg(360);
+		while (change > Angle::deg(180)) change -= Angle::deg(360);
 		int old_quarters = round_to_int(Angle::deg(rotations).get()/90);
-		rotations += new_angle.dist(old_angle);
+		rotations += change;
 		int new_quarters = round_to_int(Angle::deg(rotations).get()/90);
 		if (old_quarters != new_quarters)
 			synfig::info("rotation: %.2f turns", new_quarters/4.0);