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[wpimath] Add protobuf/struct for trivial types (#5935)
This implements de/serialization for the types that aren't templated (SwerveDriveKinematics) in C++ or where there is no trivial way to go round-trip (Splines) for the messages.
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// Copyright (c) FIRST and other WPILib contributors.
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// Open Source Software; you can modify and/or share it under the terms of
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// the WPILib BSD license file in the root directory of this project.
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#include "frc/kinematics/struct/MecanumDriveWheelPositionsStruct.h"
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namespace {
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constexpr size_t kFrontLeftOff = 0;
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constexpr size_t kFrontRightOff = kFrontLeftOff + 8;
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constexpr size_t kRearLeftOff = kFrontRightOff + 8;
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constexpr size_t kRearRightOff = kRearLeftOff + 8;
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} // namespace
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using StructType = wpi::Struct<frc::MecanumDriveWheelPositions>;
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frc::MecanumDriveWheelPositions StructType::Unpack(
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std::span<const uint8_t, kSize> data) {
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return frc::MecanumDriveWheelPositions{
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units::meter_t{wpi::UnpackStruct<double, kFrontLeftOff>(data)},
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units::meter_t{wpi::UnpackStruct<double, kFrontRightOff>(data)},
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units::meter_t{wpi::UnpackStruct<double, kRearLeftOff>(data)},
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units::meter_t{wpi::UnpackStruct<double, kRearRightOff>(data)},
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};
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}
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void StructType::Pack(std::span<uint8_t, kSize> data,
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const frc::MecanumDriveWheelPositions& value) {
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wpi::PackStruct<kFrontLeftOff>(data, value.frontLeft.value());
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wpi::PackStruct<kFrontRightOff>(data, value.frontRight.value());
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wpi::PackStruct<kRearLeftOff>(data, value.rearLeft.value());
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wpi::PackStruct<kRearRightOff>(data, value.rearRight.value());
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}
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