From: dooglus <dooglus@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Wed, 14 Nov 2007 22:58:47 +0000 (+0000)
Subject: Fix the angle-duck rotation counter code.
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=4b5a2035f115d9f4624d968a9b9733d06422701f;p=synfig.git

Fix the angle-duck rotation counter code.


git-svn-id: http://svn.voria.com/code@1152 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-studio/trunk/src/gtkmm/duck.cpp b/synfig-studio/trunk/src/gtkmm/duck.cpp
index 8500b89..63bebe7 100644
--- a/synfig-studio/trunk/src/gtkmm/duck.cpp
+++ b/synfig-studio/trunk/src/gtkmm/duck.cpp
@@ -195,9 +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);