Update to 2018_v4 image and new build system. (#598)

* Revert "Force OpenCV to 3.1.0 (#602)"

This reverts commit 50ed55e8e2.

* Removes Simulation

* Removes old build system

* Removes old gtest

* Adds new gmock and gtest

* Updates to new ni-libraries

* removes MyRobot (to be replaced)

* moves files to new location

* Adds new sim backend and new test executables

* updates .styleguide and .gitignore

* Changes cpp WPILibVersion to a function

MSVC throws an AV with the old version.

* Disables USBCamera on all systems except for linux

* 2018 NI Libraries

* New build system

wpilibc/src/main/native/include/AnalogInput.h

@@ -0,0 +1,95 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008-2017. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <stdint.h>
+
+#include <memory>
+#include <string>
+
+#include "HAL/Types.h"
+#include "LiveWindow/LiveWindowSendable.h"
+#include "PIDSource.h"
+#include "SensorBase.h"
+
+namespace frc {
+
+/**
+ * Analog input class.
+ *
+ * Connected to each analog channel is an averaging and oversampling engine.
+ * This engine accumulates the specified ( by SetAverageBits() and
+ * SetOversampleBits() ) number of samples before returning a new value.  This
+ * is not a sliding window average.  The only difference between the oversampled
+ * samples and the averaged samples is that the oversampled samples are simply
+ * accumulated effectively increasing the resolution, while the averaged samples
+ * are divided by the number of samples to retain the resolution, but get more
+ * stable values.
+ */
+class AnalogInput : public SensorBase,
+                    public PIDSource,
+                    public LiveWindowSendable {
+  friend class AnalogTrigger;
+  friend class AnalogGyro;
+
+ public:
+  static const int kAccumulatorModuleNumber = 1;
+  static const int kAccumulatorNumChannels = 2;
+  static const int kAccumulatorChannels[kAccumulatorNumChannels];
+
+  explicit AnalogInput(int channel);
+  virtual ~AnalogInput();
+
+  int GetValue() const;
+  int GetAverageValue() const;
+
+  double GetVoltage() const;
+  double GetAverageVoltage() const;
+
+  int GetChannel() const;
+
+  void SetAverageBits(int bits);
+  int GetAverageBits() const;
+  void SetOversampleBits(int bits);
+  int GetOversampleBits() const;
+
+  int GetLSBWeight() const;
+  int GetOffset() const;
+
+  bool IsAccumulatorChannel() const;
+  void InitAccumulator();
+  void SetAccumulatorInitialValue(int64_t value);
+  void ResetAccumulator();
+  void SetAccumulatorCenter(int center);
+  void SetAccumulatorDeadband(int deadband);
+  int64_t GetAccumulatorValue() const;
+  int64_t GetAccumulatorCount() const;
+  void GetAccumulatorOutput(int64_t& value, int64_t& count) const;
+
+  static void SetSampleRate(double samplesPerSecond);
+  static double GetSampleRate();
+
+  double PIDGet() override;
+
+  void UpdateTable() override;
+  void StartLiveWindowMode() override;
+  void StopLiveWindowMode() override;
+  std::string GetSmartDashboardType() const override;
+  void InitTable(std::shared_ptr<ITable> subTable) override;
+  std::shared_ptr<ITable> GetTable() const override;
+
+ private:
+  int m_channel;
+  // TODO: Adjust HAL to avoid use of raw pointers.
+  HAL_AnalogInputHandle m_port;
+  int64_t m_accumulatorOffset;
+
+  std::shared_ptr<ITable> m_table;
+};
+
+}  // namespace frc