public Vec2i(Vec4i vec)
{
X = vec.X;
Y = vec.Y;
}
public Vec3i(Vec4i vec)
{
X = vec.X;
Y = vec.Y;
Z = vec.Z;
}
public static Vec4 ToVec(this Vec4i vec)
{
return(new Vec4(vec.X, vec.Y, vec.Z, vec.W));
}