What is a VR panorama anyway - Tutorial zero
What is a spherical perspective anyway, and how does it relate to a VR panorama? Figure 1 below is an example of a spherical perspective: Fig 1. Spherical perspective drawing. Graphite on A4 tracing paper. I did it from an observation sketch ("urban sketching") on an A4 sheet of tracing paper, at the ISEL engineering school in Lisbon, Portugal (careful shading was later finished at home). You see the drawing is somehow "deformed". You can sort of guess that all these curved lines represent straight lines in space, and that the scene represents a corridor going from left to right. You can see things that are to your left, right, front, back, above and below. In fact, what you get in exchange for the deformation of the lines is that you can fit in this drawing the complete visual information of the scene, as seen by an observer that is in a fixed point in space, but can rotate his gaze freely. The proof that this is so, is that a computer can read this dra