I am trying to understand the relationship between camera and renderer.
When I call
renderer.setSize() to, say, half the previous size, the resolution of the image changes, but the size of the objects does not increase. My interpretation of that is that the camera renders to some intermediate units and those units are then mapped onto pixels by the renderer.
However, if I call
renderer.setSize() and only reduce the x size for example, without updating
camera.aspect, the aspect ratio of the objects changes.
This doesn’t make sense to me: Why would the aspect ratio change, but the actual size not?