| /* |
| * Copyright 2017 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef COBALT_INPUT_CAMERA_3D_INPUT_POLLER_H_ |
| #define COBALT_INPUT_CAMERA_3D_INPUT_POLLER_H_ |
| |
| #include <map> |
| #include <utility> |
| |
| #include "base/optional.h" |
| #include "base/synchronization/lock.h" |
| #include "cobalt/input/camera_3d.h" |
| #include "cobalt/input/input_poller.h" |
| #include "third_party/glm/glm/mat4x4.hpp" |
| |
| namespace cobalt { |
| namespace input { |
| |
| // Implements a camera that gets its orientation information from hand- |
| // controlled inputs. |
| class Camera3DInputPoller : public Camera3D { |
| public: |
| explicit Camera3DInputPoller( |
| const scoped_refptr<input::InputPoller>& input_poller); |
| |
| void CreateKeyMapping(int keycode, uint32 camera_axis, |
| float degrees_per_second) OVERRIDE; |
| void ClearKeyMapping(int keycode) OVERRIDE; |
| void ClearAllKeyMappings() OVERRIDE; |
| base::CameraOrientation GetOrientation() const OVERRIDE; |
| |
| // Returns the camera transforms based on hand-controlled inputs mapped |
| // by the functions above |
| base::CameraTransform GetCameraTransformAndUpdateOrientation() OVERRIDE; |
| |
| virtual void UpdatePerspective(float width_to_height_aspect_ratio, |
| float vertical_fov) OVERRIDE; |
| |
| virtual void Reset() OVERRIDE; |
| |
| private: |
| struct KeycodeMappingInfo { |
| KeycodeMappingInfo() : axis(0), degrees_per_second(0.0f) {} |
| KeycodeMappingInfo(uint32 axis, float degrees_per_second) |
| : axis(axis), degrees_per_second(degrees_per_second) {} |
| |
| uint32 axis; |
| float degrees_per_second; |
| }; |
| |
| typedef std::map<int, KeycodeMappingInfo> KeycodeMap; |
| |
| void AccumulateOrientation(); |
| |
| mutable base::Lock mutex_; |
| |
| // The current accumulated camera orientation state. |
| base::CameraOrientation orientation_; |
| |
| // The time that the last update to the camera's state has occurred. |
| base::optional<base::TimeTicks> last_update_; |
| |
| // A map of keys bound to camera movements. |
| KeycodeMap keycode_map_; |
| |
| // The input poller from which we can check the state of a given key. |
| scoped_refptr<input::InputPoller> input_poller_; |
| |
| float width_to_height_aspect_ratio_; |
| float vertical_fov_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Camera3DInputPoller); |
| }; |
| |
| } // namespace input |
| } // namespace cobalt |
| |
| #endif // COBALT_INPUT_CAMERA_3D_INPUT_POLLER_H_ |