Improved rotation

richardgroves · Jul 31, 2014 · 32697f7 · 32697f7
1 parent 85cc194
commit 32697f7
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/Extensions/CCSpriteMultiTouch/CCSpriteMultiTouch.m b/Extensions/CCSpriteMultiTouch/CCSpriteMultiTouch.m
@@ -195,8 +195,12 @@ - (void)touchRotate
 {
     _rotationCentre = [self centre];
     float rotation = [self rotation:_rotationCentre];
-    self.rotation = self.rotation - 180.0f / M_PI * (rotation - _rotationLast);
+    float delta = rotation - _rotationLast;
     _rotationLast = rotation;
+    // make sure the rotation is smooth
+    if (delta < -M_PI_2) delta = M_PI + delta;
+    if (delta > M_PI_2) delta = M_PI - delta;
+    self.rotation = self.rotation - (180.0f / M_PI * delta);
 }
 
 //----------------------------------------------------------------------

diff --git a/...eproj/project.xcworkspace/xcuserdata/Birkemose.xcuserdatad/UserInterfaceState.xcuserstate b/...eproj/project.xcworkspace/xcuserdata/Birkemose.xcuserdatad/UserInterfaceState.xcuserstate