137 lines
5.2 KiB
C++
137 lines
5.2 KiB
C++
//----------------------------------------------------------------------------//
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// //
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// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
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// and distributed under the MIT License (MIT). //
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// //
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// Copyright (c) Guillaume Blanc //
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// //
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// Permission is hereby granted, free of charge, to any person obtaining a //
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// copy of this software and associated documentation files (the "Software"), //
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// to deal in the Software without restriction, including without limitation //
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// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
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// and/or sell copies of the Software, and to permit persons to whom the //
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// Software is furnished to do so, subject to the following conditions: //
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// //
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// The above copyright notice and this permission notice shall be included in //
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// all copies or substantial portions of the Software. //
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// //
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
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// DEALINGS IN THE SOFTWARE. //
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// //
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//----------------------------------------------------------------------------//
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#ifndef OZZ_SAMPLES_FRAMEWORK_INTERNAL_CAMERA_H_
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#define OZZ_SAMPLES_FRAMEWORK_INTERNAL_CAMERA_H_
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#ifndef OZZ_INCLUDE_PRIVATE_HEADER
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#error "This header is private, it cannot be included from public headers."
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#endif // OZZ_INCLUDE_PRIVATE_HEADER
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#include "ozz/base/maths/simd_math.h"
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#include "ozz/base/maths/vec_float.h"
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namespace ozz {
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namespace math {
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struct Box;
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}
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namespace sample {
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class ImGui;
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namespace internal {
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// Framework internal implementation of an OpenGL/glfw camera system that can be
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// manipulated with the mouse and some shortcuts.
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class Camera {
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public:
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// Initializes camera to its default framing.
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Camera();
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// Destructor.
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~Camera();
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// Updates camera framing: mouse manipulation, timed transitions...
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// Returns actions that the user applied to the camera during the frame.
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void Update(const math::Box& _box, float _delta_time, bool _first_frame);
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// Updates camera location, overriding user inputs.
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// Returns actions that the user applied to the camera during the frame.
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void Update(const math::Float4x4& _transform, const math::Box& _box,
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float _delta_time, bool _first_frame);
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// Resets camera center, angles and distance.
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void Reset(const math::Float3& _center, const math::Float2& _angles,
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float _distance);
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// Provides immediate mode gui display event.
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void OnGui(ImGui* _im_gui);
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// Binds 3d projection and view matrices to the current matrix.
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void Bind3D();
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// Binds 2d projection and view matrices to the current matrix.
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void Bind2D();
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// Resize notification, used to rebuild projection matrix.
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void Resize(int _width, int _height);
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// Get the current projection matrix.
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const math::Float4x4& projection() { return projection_; }
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// Get the current model-view matrix.
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const math::Float4x4& view() { return view_; }
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// Get the current model-view-projection matrix.
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const math::Float4x4& view_proj() { return view_proj_; }
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// Set to true to automatically frame the camera on the whole scene.
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void set_auto_framing(bool _auto) { auto_framing_ = _auto; }
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// Get auto framing state.
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bool auto_framing() const { return auto_framing_; }
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private:
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struct Controls {
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bool zooming;
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bool zooming_wheel;
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bool rotating;
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bool panning;
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};
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Controls UpdateControls(float _delta_time);
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// The current projection matrix.
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math::Float4x4 projection_;
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// The current projection matrix.
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math::Float4x4 projection_2d_;
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// The current model-view matrix.
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math::Float4x4 view_;
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// The current model-view-projection matrix.
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math::Float4x4 view_proj_;
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// The angles in degree of the camera rotation around x and y axes.
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math::Float2 angles_;
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// The center of the rotation.
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math::Float3 center_;
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// The view distance, from the center of rotation.
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float distance_;
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// The position of the mouse, the last time it has been seen.
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int mouse_last_x_;
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int mouse_last_y_;
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int mouse_last_wheel_;
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// Set to true to automatically frame the camera on the whole scene.
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bool auto_framing_;
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};
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} // namespace internal
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} // namespace sample
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} // namespace ozz
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#endif // OZZ_SAMPLES_FRAMEWORK_INTERNAL_CAMERA_H_
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