Implements part of Device Motion in the Renderer

content/browser/device_orientation/motion.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_DEVICE_ORIENTATION_MOTION_H_
+#define CONTENT_BROWSER_DEVICE_ORIENTATION_MOTION_H_
+
+namespace device_orientation {
+class Motion {
+ public:
+  // acceleration_x, acceleration_y, and acceleration_z are the accelerations
+  // excluding gravity along the axes specified in
+  // http://dev.w3.org/geo/api/spec-source-orientation.html
+
+  // acceleration_including_gravity_x, acceleration_including_gravity_y, and
+  // acceleration_including_gravity_z are the accelerations including gravity
+  // along the same axes as above
+
+  // rotation_rate_alpha, rotation_rate_beta, and rotataion_rate_gamma are the
+  // rotations around the same axes as above
+
+  // interval is the time interval at which data is obtained from the hardware,
+  // as specified in the document referenced above
+
+  // can_provide_{acceleration_x, acceleration_y, acceleration_z,
+  // acceleration_including_gravity_x, acceleration_including_gravity_y,
+  // acceleration_including_gravity_z, rotation_rate_alpha, rotation_rate_beta,
+  // rotation_rate_gamma, interval} is true if data can be provided for that
+  // variable
+
+  Motion();
+  Motion(const Motion&);
+  void operator=(const Motion& source);
+
+  static Motion Empty() { return Motion(); }
+
+  bool is_empty() const {
+    return !can_provide_acceleration_x_ && !can_provide_acceleration_y_ &&
+        !can_provide_acceleration_z_ &&
+        !can_provide_acceleration_including_gravity_x_ &&
+        !can_provide_acceleration_including_gravity_y_ &&
+        !can_provide_acceleration_including_gravity_z_ &&
+        !can_provide_rotation_rate_alpha_ &&
+        !can_provide_rotation_rate_beta_ &&
+        !can_provide_rotation_rate_gamma_ &&
+        !can_provide_interval_;
+  }
+
+  void set_acceleration_x(double acceleration_x) {
+    can_provide_acceleration_x_ = true;
+    acceleration_x_ = acceleration_x;
+  }
+  bool can_provide_acceleration_x() const {
+    return can_provide_acceleration_x_;
+  }
+  double acceleration_x() const { return acceleration_x_; }
+
+  void set_acceleration_y(double acceleration_y) {
+    can_provide_acceleration_y_ = true;
+    acceleration_y_ = acceleration_y;
+  }
+  bool can_provide_acceleration_y() const {
+    return can_provide_acceleration_y_;
+  }
+  double acceleration_y() const { return acceleration_y_; }
+
+  void set_acceleration_z(double acceleration_z) {
+    can_provide_acceleration_z_ = true;
+    acceleration_z_ = acceleration_z;
+  }
+  bool can_provide_acceleration_z() const {
+    return can_provide_acceleration_z_;
+  }
+  double acceleration_z() const { return acceleration_z_; }
+
+  void set_acceleration_including_gravity_x(
+      double acceleration_including_gravity_x) {
+    can_provide_acceleration_including_gravity_x_ = true;
+    acceleration_including_gravity_x_ = acceleration_including_gravity_x;
+  }
+  bool can_provide_acceleration_including_gravity_x() const {
+    return can_provide_acceleration_x_;
+  }
+  double acceleration_including_gravity_x() const {
+    return acceleration_including_gravity_x_;
+  }
+
+  void set_acceleration_including_gravity_y(
+      double acceleration_including_gravity_y) {
+    can_provide_acceleration_including_gravity_y_ = true;
+    acceleration_including_gravity_y_ = acceleration_including_gravity_y;
+  }
+  bool can_provide_acceleration_including_gravity_y() const {
+    return can_provide_acceleration_y_;
+  }
+  double acceleration_including_gravity_y() const {
+    return acceleration_including_gravity_y_;
+  }
+
+  void set_acceleration_including_gravity_z(
+      double acceleration_including_gravity_z) {
+    can_provide_acceleration_including_gravity_z_ = true;
+    acceleration_including_gravity_z_ = acceleration_including_gravity_z;
+  }
+  bool can_provide_acceleration_including_gravity_z() const {
+    return can_provide_acceleration_z_;
+  }
+  double acceleration_including_gravity_z() const {
+    return acceleration_including_gravity_z_;
+  }
+
+  void set_rotation_rate_alpha(double rotation_rate_alpha) {
+    can_provide_rotation_rate_alpha_ = true;
+    rotation_rate_alpha_ = rotation_rate_alpha;
+  }
+  bool can_provide_rotation_rate_alpha() const {
+    return can_provide_rotation_rate_alpha_;
+  }
+  double rotation_rate_alpha() const { return rotation_rate_alpha_; }
+
+  void set_rotation_rate_beta(double rotation_rate_beta) {
+    can_provide_rotation_rate_beta_ = true;
+    rotation_rate_beta_ = rotation_rate_beta;
+  }
+  bool can_provide_rotation_rate_beta() const {
+    return can_provide_rotation_rate_beta_;
+  }
+  double rotation_rate_beta() const { return rotation_rate_beta_; }
+
+  void set_rotation_rate_gamma(double rotation_rate_gamma) {
+    can_provide_rotation_rate_gamma_ = true;
+    rotation_rate_gamma_ = rotation_rate_gamma;
+  }
+  bool can_provide_rotation_rate_gamma() const {
+    return can_provide_rotation_rate_gamma_;
+  }
+  double rotation_rate_gamma() const { return rotation_rate_gamma_; }
+
+  void set_interval(double interval) {
+    can_provide_interval_ = true;
+    interval_ = interval;
+  }
+  bool can_provide_interval() const { return can_provide_interval_; }
+  double interval() const { return interval_; }
+
+ private:
+  double acceleration_x_;
+  double acceleration_y_;
+  double acceleration_z_;
+  double acceleration_including_gravity_x_;
+  double acceleration_including_gravity_y_;
+  double acceleration_including_gravity_z_;
+  double rotation_rate_alpha_;
+  double rotation_rate_beta_;
+  double rotation_rate_gamma_;
+  double interval_;
+  bool can_provide_acceleration_x_;
+  bool can_provide_acceleration_y_;
+  bool can_provide_acceleration_z_;
+  bool can_provide_acceleration_including_gravity_x_;
+  bool can_provide_acceleration_including_gravity_y_;
+  bool can_provide_acceleration_including_gravity_z_;
+  bool can_provide_rotation_rate_alpha_;
+  bool can_provide_rotation_rate_beta_;
+  bool can_provide_rotation_rate_gamma_;
+  bool can_provide_interval_;
+};
+
+}  // namespace device_orientation
+
+#endif  // CONTENT_BROWSER_DEVICE_ORIENTATION_MOTION_H_