use vdt
use tan for limitex angle less of 0.15
not to loose sollya poly
try to keep traj equivalent to worse
speed up bound check
minor recoding
try to reduce code
try to avoid to recompute mag-field
clean a bit
restore heap if some left
use intermedeate logic: always sort,  kill all exceeding
devirtualize, inline
refactor barrel layers
inline
fix DiskSectorBounds, no effect
add a test
ok
Merged TrackGeom from repository VinInn
test and assert
forgot new files