Anamorphosis is a kind of distorted image that only looks right from one particular angle, and the poem uses that idea to talk about how people see one another. The speaker says we are mirrors: we learn who we are through other people's eyes, but what we get back is only an impression, an idea shaped by someone else's guesswork.
The tone is thoughtful and a little wistful. The speaker believes we need each other to find the "hidden centre" of a person, yet admits that real understanding means constantly changing our position, and we rarely bother. Usually we settle for the first thing we notice. The ending is quietly sad: the final impression we form turns into strange, swirling shapes that "shyly mock" our vision. The mockery is gentle rather than cruel, as if the truth about someone is politely slipping away from us. The short, broken lines mirror that sense of shifting viewpoints.