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242 Commits

Author SHA1 Message Date
Tyler Veness
20b5bed1cb [wpimath] Clean up Java Quaternion class (#4399) 
Vector.norm() and Vector.dot() were added to make the implementation
simpler and match the C++ version more closely.
 2022-09-04 09:45:02 -07:00
ohowe
b5a17f762c [wpimath] Add direction to slew rate limiter (#4377) 2022-09-01 14:46:46 -07:00
CarloWoolsey
97c15af238 [wpimath] LinearSystemId: Fix docs, move C++ impls out of header (#4388) 
- Fix inaccuracies and inconsistencies in Java & C++ LinearSystemId documentation.
- Move LinearSystemId function definitions to LinearSystemId.cpp
 2022-08-31 09:12:48 -07:00
Tyler Veness
fe4d12ce22 [wpimath] Add LTV controller derivations and make enums private (#4380) 
The LTV differential drive controller derivation wasn't included inline
because it's too long.
 2022-08-28 23:04:52 -07:00
Tyler Veness
3fdb2f767d [wpimath] Add comments with Ramsete equations (#4348) 2022-08-11 07:09:16 -07:00
Tyler Veness
3ccf806064 [wpimath] Remove redundant LinearFilter.finiteDifference() argument (#4335) 
The number of samples is already determined by the length of the stencil
list.
 2022-07-22 12:50:30 -05:00
Tyler Veness
6f1e01f8bd [wpimath] Document example of online filtering for LinearFilter.finiteDifference() (#4336) 2022-07-22 12:46:33 -05:00
Tyler Veness
add00a96ed [wpimath] Improve DifferentialDriveAccelerationLimiter docs (NFC) (#4323) 
Defined trackwidth, added skipped steps to the algorithm's internal
proof, and grouped the algorithm steps more logically with blank lines.
 2022-07-01 06:43:57 -07:00
Tyler Veness
82fac41244 [wpimath] Better document trackwidth parameters (NFC) (#4324) 2022-07-01 06:42:49 -07:00
Connor Worley
a99c11c14c [wpimath] Replace UKF implementation with square root form (#4168) 
Co-authored-by: Tyler Veness <calcmogul@gmail.com>
 2022-06-08 22:19:01 -07:00
Starlight220
f2d243fa68 [build] Change defaults for Java lints (#4300) 
Removes the need to individually suppress the "serial" warning.
 2022-06-06 17:06:43 -07:00
Prateek Machiraju
fc37265da5 [wpimath] Add angle measurement convention to ArmFeedforward docs (NFC) (#4285) 2022-06-02 21:22:47 -07:00
Prateek Machiraju
d9f9cd1140 [wpimath] Reset prev_time on pose estimator reset (#4283) 2022-06-02 21:21:42 -07:00
Tyler Veness
5aa67f56e6 [wpimath] Clean up math comments (#4252) 2022-05-20 15:16:56 -07:00
Tyler Veness
0d9956273c [wpimath] Add CoordinateSystem.convert() translation and rotation overloads (#4227) 2022-05-18 20:41:15 -07:00
Tyler Veness
5876b40f08 [wpimath] Memoize CoordinateSystem and CoordinateAxis statics (#4241) 2022-05-18 10:47:46 -07:00
Max Gordon
a3d44a1e69 [wpimath] Add Translation2d.getAngle() (#4217) 
Co-authored-by: Max Gordon <tonald.drump2.0@gamil.com>
Co-authored-by: Tyler Veness <calcmogul@gmail.com>
 2022-05-14 21:22:00 -07:00
Tyler Veness
f341e1b2be [wpimath] Document standard coordinate systems better (NFC) (#4228) 2022-05-14 15:31:06 -07:00
Tyler Veness
b33715db15 [wpimath] Add CoordinateSystem class (#4214) 2022-05-07 10:25:19 -07:00
Tommy Beadle
dc6f641fd2 [wpimath] PIDController: Reset position and velocity error when reset() is called. (#4064) 
In addition to m_prevError and m_totalError, m_positionError and
m_velocityError need to be reset to 0 when reset() is called.
Otherwise, the next time calculate() is called, the old values will be
used as the previous error, but this is inaccurate since the caller
wanted to reset the state of the PID controller.
 2022-05-06 08:44:08 -07:00
Tyler Veness
f20a20f3f1 [wpimath] Add 3D geometry classes (#4175) 
Also clean up 2D geometry documentation.
 2022-05-06 08:41:23 -07:00
Kaitlyn Kenwell
708a4bc3bc [wpimath] Conserve previously calculated swerve module angles when updating states for stationary ChassisSpeeds (#4208) 
* Calculated swerve module states now stored in a member variable
* If ChassisSpeeds(0, 0, 0) is converted to module speeds, the
previously calculated module angle will be conserved, with forward speed
set to 0
* New tests added
 2022-05-06 08:38:20 -07:00
chen perach
ef7ed21a9d [wpimath] Improve accuracy of ComputerVisionUtil.calculateDistanceToTarget() (#4215) 2022-05-06 08:36:58 -07:00
Tyler Veness
b1abf455c1 [wpimath] LTVUnicycleController: Use LUT, provide default hyperparameters (#4213) 2022-05-04 22:04:08 -07:00
Tyler Veness
d5456cf278 [wpimath] LTVDifferentialDriveController: Remove unused variable (#4212) 2022-05-04 22:03:15 -07:00
Tyler Veness
ee03a7ad3b Remove most 2022 deprecations (#4205) 
Excludes "old" commands and SimDevice functions.
 2022-05-04 20:37:27 -07:00
Tyler Veness
ce1a7d698a [wpimath] Refactor WheelVoltages inner class to a separate file (#4203) 2022-05-01 11:01:20 -07:00
Tyler Veness
87bf70fa8e [wpimath] Add LTV controllers (#4094) 
This adds a unicycle controller that's a drop-in replacement for Ramsete
and a differential drive controller that controls the full pose and
outputs voltages. The main benefit is LQR-like tuning knobs using a
system model.
 2022-04-30 22:54:22 -07:00
Oblarg
09cf6eeecb [wpimath] ApplyDeadband: add a scale param (#3865) 
Also templates it in C++ so it can work with both doubles and units.
 2022-04-30 20:29:48 -07:00
Starlight220
18ff694f02 [wpimath] Add Rotation2d.fromRadians factory (#4178) 2022-04-30 00:19:29 -07:00
Tyler Veness
d926dd1610 [wpimath] Fix pose estimator performance (#4111) 
Fixes #4087.
 2022-04-26 18:43:59 -07:00
Tyler Veness
5ebe911933 [wpimath] Add DifferentialDriveAccelerationLimiter (#4091) 2022-04-24 07:21:40 -07:00
Tyler Veness
355a11a414 Update Java linters and fix new PMD errors (#4157) 
PMD requires that variables only initialized in the constructor be
final. The compiler errors if those final variables aren't guaranteed to
be initialized, so extra else branches were added to ensure that.

PMD also requires that classes with only private constructors be final.
The equivalent C++ classes were finalized as well, except for
TimeInterpolatableBuffer because it doesn't expose factory functions.
 2022-04-24 07:18:05 -07:00
camaj
922d50079a [wpimath] Units: fix comment in degreesToRotations (NFC) (#4159) 2022-04-13 22:32:55 -07:00
Jonah Snider
dd163b62ae [wpimath] Rotation2d: Add factory method that uses rotations (#4166) 
Rotation2d.fromRotations(1).equals(new Rotation2d(2 * Math.PI)); // true

Also adds a member method to get the value of the Rotation2d in rotations.
 2022-04-13 22:31:43 -07:00
Tyler Veness
5bf46a9093 [wpimath] Add ComputerVisionUtil (#4124) 
Closes #4108.
 2022-04-08 21:20:53 -07:00
Tyler Veness
c8905ec29a [wpimath] Remove ImplicitModelFollower dt argument (#4119) 
The math works just fine without model discretization.
 2022-03-29 11:29:06 -07:00
Tyler Veness
b4620f01f9 [wpimath] Fix Rotation2d interpolation in Java (#4125) 
Fixes #4112.
 2022-03-29 08:42:43 -07:00
Tyler Veness
ba0dccaae4 [wpimath] Fix reference to Rotation2d.fromRadians() (#4118) 
Rotation2d.fromRadians() doesn't exist. The constructor should be used
instead.
 2022-03-20 21:57:03 -07:00
Tyler Veness
8d79dc8738 [wpimath] Add ImplicitModelFollower (#4056) 2022-03-20 00:36:12 -07:00
Tyler Veness
78108c2aba [wpimath] Fix PIDController having incorrect error after calling SetSetpoint() (#4070) 2022-03-19 23:59:00 -07:00
Tyler Veness
95ae23b0e7 [wpimath] Improve EKF numerical stability (#4093) 
The Joseph form of the error covariance update equation is more
numerically stable when the Kalman gain isn't optimal. Numerical
instability and filter divergence can occur if the user goes long time
periods between updates and the error covariance becomes ill-conditioned
(the ratio between the largest and smallest eigenvalue gets too large).
 2022-03-19 20:41:28 -07:00
Tyler Veness
d5cb6fed67 [wpimath] Support zero cost entries in MakeCostMatrix() (#4100) 
The existing implementation will produce a cost of NaN if a tolerance of
infinity is entered, but the limit approaches zero. Being able to
specify that a state has no cost is useful, so this change adds support for
that.
 2022-03-19 20:40:26 -07:00
Tyler Veness
d0fef18378 [wpimath] Remove redundant this. from ExtendedKalmanFilter.java (#4115) 2022-03-19 20:39:10 -07:00
Tyler Veness
d640c0f41f [wpimath] Fix pose estimator local measurement standard deviation docs (NFC) (#4113) 2022-03-19 20:38:32 -07:00
Tyler Veness
2668130e70 [wpimath] Remove SwerveDrivePoseEstimator encoder reset warning (#4066) 
SwerveDrivePoseEstimator uses velocities, so position resets aren't
needed.

Closes #4065.
 2022-02-28 17:40:25 -08:00
shueja-personal
dae18308c9 [wpimath] Minor fixes to Rotation2d docs (NFC) (#4055) 
Fixed incorrect examples on .plus(), and a missing word.

Make example code snippets closer to actual use.
 2022-02-27 16:56:56 -08:00
modelmat
42908126b9 [wpilib] Add DCMotorSim (#3910) 2022-01-21 20:42:06 -08:00
Chirag Kaushik
f3a0b5c7d7 [wpimath] Fix Java SimpleMotorFeedforward Docs (NFC) (#3926) 2022-01-17 09:59:04 -08:00
Tyler Veness
7f4265facc [wpimath] Add LinearFilter::FiniteDifference() (#3900) 
This allows making more general finite difference filters, like central
finite difference. SysId uses this for acceleration filtering.
 2022-01-15 20:18:11 -08:00