Blender Git Loki

Improved naming of cameras/views

The recent change that distinguished "multicamera reconstruction" from "multiview reconstruction" led to some confusing naming. A EuclideanReconstruction would store EuclideanCameras, which are the position and orientation of a physical camera for a specific image. That is, a EuclideanCamera is a camera at an instance, rather than representing the physical camera itself. This meant that EuclideanCameras had associated cameras, which is clearly confusing. This commit attempts to unify the terminology:

- View - a specific instance of a camera at some orientation and point in space (giving an image of the scene)
- Multiview reconstruction - reconstruction of a scene from multiple views
- Camera - a physical video camera
- Multicamera reconstruction - a form of multiview reconstruction, where the views are associated with some number of video cameras

To this end, EuclideanCamera and ProjectiveCamera have been renamed to EuclideanView and ProjectiveView, as they represent a camera at a specific instance.

Some functions continue to have variables named "camera" where "view" would be more appropriate.