/// <summary>
/// Transforms a direction vector.
/// </summary>
public static V2f TransformDir(Rot2f rot, V2f v)
{
return((M22f)rot * v);
}
/// <summary>
/// Inverse transforms a direction vector.
/// </summary>
public static V2f InvTransformDir(Rot2f rot, V2f v)
{
return((M22f)Rot2f.Negate(rot) * v);
}
/// <summary>
/// Negates rotation.
/// </summary>
public static Rot2f Negate(Rot2f rot)
{
return(new Rot2f(-rot.Angle));
}
/// <summary>
/// Divides scalar by a rotation.
/// </summary>
public static Rot2f Divide(Rot2f rot, float val)
{
return(new Rot2f(rot.Angle / val));
}
/// <summary>
/// Multiplies 2 rotations.
/// </summary>
public static Rot2f Multiply(Rot2f r0, Rot2f r2)
{
return(new Rot2f(r0.Angle * r2.Angle));
}
public static M33f Multiply(Rot2f rot2, Rot3f rot3)
{
return(Rot2f.Multiply(rot2, (M33f)rot3));
}
public static M22f Multiply(Rot2f rot, M22f mat)
{
return((M22f)rot * mat);
}