<function name="AngleEx" parent="Vector" type="classfunc"> <description>Returns the angle of the vector, but instead of assuming that up is <page>Global.Vector</page>( 0, 0, 1 ) (Like <page>Vector:Angle</page> does) you can specify which direction is 'up' for the angle.</description> <realm>Shared</realm> <args> <arg name="up" type="Vector">The up direction vector</arg> </args> <rets> <ret name="" type="Angle">The angle</ret> </rets> </function> <example> <description>Shows usage of the function</description> <code>print( Vector( 0, 0, 100 ):AngleEx( Vector( 0, 0, 0 ) ) )</code> <output>Angle( -90.000, -0.000, 0.000 )</output> </example> <example> <description> Use forward and up vector to produce angle. These two lines below will return the same angle </description> <code> local e = ents.Create("prop_physics") print(e:GetAngles()) print(e:GetForward():AngleEx(e:GetUp())) local e = ents.Create("prop_physics") print(e:GetAngles()) print(e:GetForward():AngleEx(e:GetUp())) </code> </example>