YAGSL/swervelib/kinematics/SwerveModuleState2.java

package frc.robot.subsystems.swervedrive.swerve.kinematics;

import edu.wpi.first.math.geometry.Rotation2d;
import edu.wpi.first.math.kinematics.SwerveModuleState;

// Copied from team3181's REVSwerve2023 repo
public class SwerveModuleState2 extends edu.wpi.first.math.kinematics.SwerveModuleState
{

  /**
   * Angular velocity in radians per second. Angular Velocity = omega.
   */
  public double angularVelocityRadPerSecond = 0;

  /**
   * Constructs a SwerveModuleState with zeros for speed and angle.
   */
  public SwerveModuleState2()
  {
  }

  /**
   * Constructs a SwerveModuleState with zeros for speed and angle.
   */
  public SwerveModuleState2(SwerveModuleState self)
  {
    super(self.speedMetersPerSecond, self.angle);
    this.angularVelocityRadPerSecond = 0;
  }

  /**
   * Constructs a SwerveModuleState.
   *
   * @param speedMetersPerSecond The speed of the wheel of the module.
   * @param angle                The angle of the module.
   */
  public SwerveModuleState2(double speedMetersPerSecond, Rotation2d angle)
  {
    super(speedMetersPerSecond, angle);
    this.angularVelocityRadPerSecond = 0;
  }

  /**
   * Constructs a SwerveModuleState.
   *
   * @param speedMetersPerSecond        The speed of the wheel of the module.
   * @param angle                       The angle of the module.
   * @param angularVelocityRadPerSecond The angular velocity of the module.
   */
  public SwerveModuleState2(double speedMetersPerSecond, Rotation2d angle, double angularVelocityRadPerSecond)
  {
    super(speedMetersPerSecond, angle);
    this.angularVelocityRadPerSecond = angularVelocityRadPerSecond;
  }

  /**
   * Minimize the change in heading the desired swerve module state would require by potentially reversing the direction
   * the wheel spins. Customized from WPILib's version to include placing in appropriate scope for CTRE and REV onboard
   * control as both controllers as of writing don't have support for continuous input.
   *
   * @param desiredState The desired state.
   * @param currentAngle The current module angle.
   */
  public static SwerveModuleState2 optimize(
      SwerveModuleState2 desiredState, Rotation2d currentAngle)
  {
    SwerveModuleState2 state;
    Rotation2d         delta = desiredState.angle.minus(currentAngle);
    if (Math.abs(delta.getDegrees()) > 90.0)
    {
      state = new SwerveModuleState2(
          -desiredState.speedMetersPerSecond,
          desiredState.angle.rotateBy(Rotation2d.fromDegrees(180.0)));
    } else
    {
      state = new SwerveModuleState2(desiredState.speedMetersPerSecond, desiredState.angle);
    }
    // state.angle = Rotation2d.fromDegrees(
    //     placeInAppropriate0To360Scope(currentAngle.getDegrees(), state.angle.getDegrees()));
    return state;
  }

  /**
   * @param scopeReference Current Angle
   * @param newAngle       Target Angle
   * @return Closest angle within scope
   */
  public static double placeInAppropriate0To360Scope(double scopeReference, double newAngle)
  {
    double lowerBound;
    double upperBound;
    double lowerOffset = scopeReference % 360;
    if (lowerOffset >= 0)
    {
      lowerBound = scopeReference - lowerOffset;
      upperBound = scopeReference + (360 - lowerOffset);
    } else
    {
      upperBound = scopeReference - lowerOffset;
      lowerBound = scopeReference - (360 + lowerOffset);
    }
    while (newAngle < lowerBound)
    {
      newAngle += 360;
    }
    while (newAngle > upperBound)
    {
      newAngle -= 360;
    }
    if (newAngle - scopeReference > 180)
    {
      newAngle -= 360;
    } else if (newAngle - scopeReference < -180)
    {
      newAngle += 360;
    }
    return newAngle;
  }
}