Renamed folders for consistency, using sim/athena/shared schema (#27)

Rename the following folders:
hal/lib/Athena -> hal/lib/athena
hal/lib/Desktop -> hal/lib/sim
hal/lib/Shared -> hal/lib/shared
wpilibc/Athena -> wpilibc/athena
wpilibc/simulation -> wpilibc/sim

Windows users may need to run gradlew clean after updating.

wpilibc/athena/src/AnalogPotentiometer.cpp

@@ -0,0 +1,99 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "AnalogPotentiometer.h"
+#include "ControllerPower.h"
+
+/**
+ * Construct an Analog Potentiometer object from a channel number.
+ *
+ * @param channel   The channel number on the roboRIO to represent. 0-3 are
+ *                  on-board 4-7 are on the MXP port.
+ * @param fullRange The angular value (in desired units) representing the full
+ *                  0-5V range of the input.
+ * @param offset    The angular value (in desired units) representing the
+ *                  angular output at 0V.
+ */
+AnalogPotentiometer::AnalogPotentiometer(int channel, double fullRange,
+                                         double offset)
+    : m_analog_input(std::make_unique<AnalogInput>(channel)),
+      m_fullRange(fullRange),
+      m_offset(offset) {}
+
+/**
+ * Construct an Analog Potentiometer object from an existing Analog Input
+ * pointer.
+ *
+ * @param channel   The existing Analog Input pointer
+ * @param fullRange The angular value (in desired units) representing the full
+ *                  0-5V range of the input.
+ * @param offset    The angular value (in desired units) representing the
+ *                  angular output at 0V.
+ */
+AnalogPotentiometer::AnalogPotentiometer(AnalogInput* input, double fullRange,
+                                         double offset)
+    : m_analog_input(input, NullDeleter<AnalogInput>()),
+      m_fullRange(fullRange),
+      m_offset(offset) {}
+
+/**
+ * Construct an Analog Potentiometer object from an existing Analog Input
+ * pointer.
+ *
+ * @param channel   The existing Analog Input pointer
+ * @param fullRange The angular value (in desired units) representing the full
+ *                  0-5V range of the input.
+ * @param offset    The angular value (in desired units) representing the
+ *                  angular output at 0V.
+ */
+AnalogPotentiometer::AnalogPotentiometer(std::shared_ptr<AnalogInput> input,
+                                         double fullRange, double offset)
+    : m_analog_input(input), m_fullRange(fullRange), m_offset(offset) {}
+
+/**
+ * Get the current reading of the potentiometer.
+ *
+ * @return The current position of the potentiometer (in the units used for
+ *         fullRange and offset).
+ */
+double AnalogPotentiometer::Get() const {
+  return (m_analog_input->GetVoltage() / ControllerPower::GetVoltage5V()) *
+             m_fullRange +
+         m_offset;
+}
+
+/**
+ * Implement the PIDSource interface.
+ *
+ * @return The current reading.
+ */
+double AnalogPotentiometer::PIDGet() { return Get(); }
+
+/**
+ * @return the Smart Dashboard Type
+ */
+std::string AnalogPotentiometer::GetSmartDashboardType() const {
+  return "Analog Input";
+}
+
+/**
+ * Live Window code, only does anything if live window is activated.
+ */
+void AnalogPotentiometer::InitTable(std::shared_ptr<ITable> subtable) {
+  m_table = subtable;
+  UpdateTable();
+}
+
+void AnalogPotentiometer::UpdateTable() {
+  if (m_table != nullptr) {
+    m_table->PutNumber("Value", Get());
+  }
+}
+
+std::shared_ptr<ITable> AnalogPotentiometer::GetTable() const {
+  return m_table;
+}