After a change of the tracks, once the mouse is let go, the joints check looks at the joints of the tracks changed and of
the tracks they join, with the limits of the Joints panel: ends almost meeting, steps, kinks, jumps of the cant and of the
grade get a marker with the value in the view while the panel is closed, and go away once a later change or an undo puts
them right. The check of a track is shared with the panel (joints_check takes the list and the pairs seen), the pairs
already looked at are kept by the tool instead of a global. Self-test command jointslive.
editor_services was growing into one interface every tool depended on
whole. It splits into the roles the editor plays for its tools: the
selection, the view, the undo history, the templates by the track, the
ground with the terrain model, the track design and the guide of the
first steps. Each tool is handed only the roles it uses, so what it
depends on can be read from its constructor; editor_services stays as
the sum of the roles the editor implements.
The third tool out of editor_mode. It reaches the terrain model and the
places of the tracks on it through the services, the place of a track
for the terrain model is a type of its own now, and the laying and the
switches ask the tool for the kink it allows. A self-test command can
ask to be run again in the next frame, as the check against the terrain
model does while the model comes in.
