Fix Collada (dae) export for objects with rotations around more than 1 axis.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5107 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 --------------------------
 Changes in 1.9 (not yet released)
 
+- Fix collada export for objects with rotations around more than 1 axis.
 - Add ISceneNodeAnimatorCameraMaya::setTargetMinDistance and getTargetMinDistance.
 - Add override font to IGUITreeView
 - CGUIComboBox now updates selection-list when font changes while it's open (thx @ rubixcuber for bugreport)

source/Irrlicht/CColladaMeshWriter.cpp

@@ -763,11 +763,15 @@ void CColladaMeshWriter::writeSceneNode(irr::scene::ISceneNode * node )
 	}
 	else
 	{
-		irr::core::vector3df rot(node->getRotation());
 		writeTranslateElement( node->getPosition() );
-		writeRotateElement( irr::core::vector3df(1.f, 0.f, 0.f), rot.X );
-		writeRotateElement( irr::core::vector3df(0.f, 1.f, 0.f), rot.Y );
-		writeRotateElement( irr::core::vector3df(0.f, 0.f, 1.f), rot.Z );
+
+		irr::core::vector3df rot(node->getRotation());
+		core::quaternion quat(rot*core::DEGTORAD);
+		f32 angle;
+		core::vector3df axis;
+		quat.toAngleAxis(angle, axis);
+		writeRotateElement( axis, angle*core::RADTODEG );
+
 		writeScaleElement( node->getScale() );
 	}