The speaker describes feeling constantly watched. The poem opens with a wide, empty space with no shelter, an image that makes privacy seem impossible. Nothing blocks the view, so everything a person does can be seen. Even the "corner," which we usually think of as a hiding spot, turns into a place where actions are "analyzed," as if someone is always studying and judging.
The speaker seems tired and uneasy. The second stanza makes this clearer: there is never a moment alone, and nowhere to escape other people's attention. The plain, blunt wording adds to that feeling, since there are no comforting images or softening touches to break the pressure.
The mood is exposed and claustrophobic, which is an odd mix given the open space described. That contrast is the poem's main idea: being surrounded by openness can feel more trapped than being in a small room, if everyone can see you. The title, "Viewpoint," suggests the poem is about how it feels to be looked at, and perhaps how others' judgments shape a person's sense of self.