Walkthrough simulation is effective for design and presentation of buildings or urban space.
Before they are physically constructed ,Simulating virtual buildings is useful for designers and clients. However,walkable area of the physical space is strictly limited according to the sensing range of the motion tracking sensor or wire harness of interface devices. Our Walkthrough simulator provides sense of walking while position of the walker is fixed in the physical world. The walker wears omni-directional sliding devices on the feet, and a hoop is set around the walker's waist by which the position of the walker is limited. We developed specialized roller skate equipped with four casters which enables two dimensional motion.