If mapping_2d::LocalTrajectoryBuilder::AddHorizontalRangeData is called
twice in a row with the same `time`, the `velocity_estimate_` becomes
`inf` which led to `inf`s in the optimization problem, which led to
failures inside Ceres.
Fixes#233.
This is done by replacing CMAKE_*_DIR variables with PROJECT_*_ variables so
that CMake uses correct paths when libcartographer is a subproject
Move AllFiles.cmake into the project binary dir instead of the root CMake binary dir,
use a project-dependent detect_changes target name
This makes overriding it from an upper level CMakeLists.txt possible, which is required
when doing a super-build which doesn't require installing libcartographer.
Ceres can be built without linking against a sparse linear algebra library
such as SuiteSparse or Eigen-sparse. This can happen if the user does not
have all the dependencies, which normally get installed when following
the Cartographer installation guide. In this case, Cartographer will
work, but without loop closures, because Ceres is not working fast enough
(the loop closure optimization without a sparse linear algebra library
is a few orders of magnitude slower). Another bad side effect of this is
that Cartographer will hang when finalizing the trajectory or on exit,
because all loop closing optimizations will be waiting in a queue which
can take hours to process.
When Ceres is regularly built against a sparse linear algebra library, as it
is supposed to be, it declares a component named SparseLinearAlgebraLibrary.
Because normal functioning of Cartographer seemingly depends on this being
present, it is introduced here in Cartographer as a required Ceres component
dependency.
Colorless points are considered to be black. Creating assets with
intensities will give now brighter X-Rays. I plan to fix this by adding
intensities besides colors into PointBatch and having a PointsProcessor
that converts intensities into colors.
Removes the loss function for intra-submap constraints in 3D SLAM,
as it is already done in 2D. Also removes a duplicate call to the
solver in 2D, and code cleanup.
The Boost include directory was not correctly added, and the
headers of the project where always looked up at the source or
build directory, not where they are installed.
Currently, on xenial/kinetic the transitive dependencies on
libcartographer and its dependencies are not duplicated after
each library that depends on it in the linker command.
Add dependencies via target_link_libraries as PUBLIC.
It seems the new behavior which defaults to PRIVATE was
used implicitly causing transitive dependencies to be
omitted.
When processing offline data determining which trajectory needs more
data before processing can continue is surprisingly tricky. We thus
expose this information at the map builder to avoid duplicating this
logic.
Holger Rapp
Wolfgang Hess
catskul
Mac Mason
Juraj Oršulić
William Woodall
William Woodall
Damon Kohler