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Ames Room Illusion Explained (2D)

Interactive 2D Ames-room simulator: see the true trapezoidal floor plan from above and the deceptively rectangular view through the peephole, with live apparent-size and true-vs-assumed-distance readouts.

Perception & Optical Illusions2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion breaks the Ames-room "giant and dwarf" illusion into the two views that make it work: panel A is the true floor plan seen from above, showing the room is actually a trapezoid whose far corners sit at very different real distances from one fixed eye point; panel B is a straight perspective projection of that same room from the eye, which looks like an ordinary rectangular room because every distorted corner was built along a sight ray from that exact point. Drag the trapezoid-amount slider to see how strong the distortion can get while panel B still reads as normal, then drag the viewing-position slider away from the peephole to watch the illusion collapse as the true shape leaks into view — while the live readouts show the two identical 1.80 m figures' real distances pulling apart even though the room implies they are equidistant.

⚙ Under the hood

This 2D companion splits the Ames-room giant-and-dwarf illusion into a true top-down trapezoid floor plan and a live perspective projection through the fixed peephole, so you can see exactly why the distorted room reads as an ordinary rectangle from one point and falls apart from any other.

Optical IllusionsPerceptionForced PerspectiveAmes Room

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install