💿🐜 Antkeeper source code
https://antkeeper.com
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327 lines
7.8 KiB
327 lines
7.8 KiB
/*
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* Copyright (C) 2021 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_SCENE_CAMERA_HPP
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#define ANTKEEPER_SCENE_CAMERA_HPP
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#include "scene/object.hpp"
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#include "geom/view-frustum.hpp"
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#include "utility/fundamental-types.hpp"
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#include "render/compositor.hpp"
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namespace scene {
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/**
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*
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*/
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class camera: public object<camera>
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{
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public:
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typedef geom::view_frustum<float> view_frustum_type;
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camera();
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/**
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* Maps object coordinates to window coordinates.
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*
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* @param object Object coordinates.
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* @param viewport Vector containing the `x`, `y`, `w`, and `h` of the viewport.
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* @return Projected window coordinates.
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*/
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float3 project(const float3& object, const float4& viewport) const;
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/**
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* Maps window coordinates to object coordinates.
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*
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* @param window Window coordinates.
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* @param viewport Vector containing the `x`, `y`, `w`, and `h` of the viewport.
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* @return Unprojected object coordinates.
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*/
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float3 unproject(const float3& window, const float4& viewport) const;
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/**
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* Sets the camera's projection matrix using perspective projection.
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*
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* @param fov Vertical field of view.
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* @param aspect_ratio Aspect ratio.
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* @param clip_near Distance to near clipping plane.
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* @param clip_far Distance to far clipping plane.
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*/
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void set_perspective(float fov, float aspect_ratio, float clip_near, float clip_far);
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/**
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* Sets the camera's projection matrix using orthographic projection.
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*
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* @param clip_left Signed distance to left clipping plane.
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* @param clip_right Signed distance to right clipping plane.
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* @param clip_bottom Signed distance to bottom clipping plane.
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* @param clip_top Signed distance to top clipping plane.
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* @param clip_near Signed distance to near clipping plane.
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* @param clip_far Signed distance to far clipping plane.
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*/
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void set_orthographic(float clip_left, float clip_right, float clip_bottom, float clip_top, float clip_near, float clip_far);
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/**
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* Sets the camera's ISO 100 exposure value directly
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*
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* @param ev100 ISO 100 exposure value.
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*/
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void set_exposure(float ev100);
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/**
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* Sets the camera's ISO 100 exposure value given exposure settings.
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*
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* @param f_number F-number.
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* @param speed Shutter speed, in seconds.
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* @param iso ISO sensitivity value.
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*/
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void set_exposure(float f_number, float speed, float iso);
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void set_compositor(render::compositor* compositor);
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void set_composite_index(int index);
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virtual const bounding_volume_type& get_local_bounds() const;
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virtual const bounding_volume_type& get_world_bounds() const;
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float is_orthographic() const;
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float get_clip_left() const;
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float get_clip_right() const;
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float get_clip_bottom() const;
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float get_clip_top() const;
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float get_clip_near() const;
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float get_clip_far() const;
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float get_fov() const;
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float get_aspect_ratio() const;
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/// Returns the camera's view matrix.
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const float4x4& get_view() const;
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/// Returns the camera's projection matrix.
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const float4x4& get_projection() const;
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/// Returns the camera's view-projection matrix.
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const float4x4& get_view_projection() const;
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/// Returns the camera's view frustum.
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const view_frustum_type& get_view_frustum() const;
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/// Returns the camera's ISO 100 exposure value.
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float get_exposure() const;
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const render::compositor* get_compositor() const;
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render::compositor* get_compositor();
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int get_composite_index() const;
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const tween<float>& get_clip_left_tween() const;
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const tween<float>& get_clip_right_tween() const;
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const tween<float>& get_clip_bottom_tween() const;
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const tween<float>& get_clip_top_tween() const;
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const tween<float>& get_clip_near_tween() const;
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const tween<float>& get_clip_far_tween() const;
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const tween<float>& get_fov_tween() const;
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const tween<float>& get_aspect_ratio_tween() const;
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const tween<float4x4>& get_view_tween() const;
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const tween<float4x4>& get_projection_tween() const;
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const tween<float4x4>& get_view_projection_tween() const;
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const tween<float>& get_exposure_tween() const;
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/// @copydoc object_base::update_tweens();
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virtual void update_tweens();
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private:
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virtual void transformed();
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render::compositor* compositor;
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int composite_index;
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bool orthographic;
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tween<float> clip_left;
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tween<float> clip_right;
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tween<float> clip_bottom;
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tween<float> clip_top;
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tween<float> clip_near;
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tween<float> clip_far;
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tween<float> fov;
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tween<float> aspect_ratio;
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tween<float4x4> view;
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tween<float4x4> projection;
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tween<float4x4> view_projection;
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tween<float> exposure;
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view_frustum_type view_frustum;
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};
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inline const typename object_base::bounding_volume_type& camera::get_local_bounds() const
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{
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/// @TODO: return local bounds, not world bounds
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return view_frustum.get_bounds();
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}
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inline const typename object_base::bounding_volume_type& camera::get_world_bounds() const
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{
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return view_frustum.get_bounds();
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}
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inline float camera::is_orthographic() const
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{
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return orthographic;
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}
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inline float camera::get_clip_left() const
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{
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return clip_left[1];
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}
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inline float camera::get_clip_right() const
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{
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return clip_right[1];
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}
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inline float camera::get_clip_bottom() const
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{
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return clip_bottom[1];
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}
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inline float camera::get_clip_top() const
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{
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return clip_top[1];
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}
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inline float camera::get_clip_near() const
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{
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return clip_near[1];
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}
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inline float camera::get_clip_far() const
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{
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return clip_far[1];
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}
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inline float camera::get_fov() const
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{
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return fov[1];
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}
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inline float camera::get_aspect_ratio() const
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{
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return aspect_ratio[1];
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}
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inline const float4x4& camera::get_view() const
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{
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return view[1];
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}
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inline const float4x4& camera::get_projection() const
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{
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return projection[1];
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}
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inline const float4x4& camera::get_view_projection() const
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{
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return view_projection[1];
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}
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inline const typename camera::view_frustum_type& camera::get_view_frustum() const
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{
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return view_frustum;
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}
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inline float camera::get_exposure() const
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{
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return exposure[1];
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}
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inline const render::compositor* camera::get_compositor() const
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{
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return compositor;
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}
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inline render::compositor* camera::get_compositor()
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{
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return compositor;
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}
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inline int camera::get_composite_index() const
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{
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return composite_index;
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}
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inline const tween<float>& camera::get_clip_left_tween() const
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{
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return clip_left;
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}
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inline const tween<float>& camera::get_clip_right_tween() const
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{
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return clip_right;
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}
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inline const tween<float>& camera::get_clip_bottom_tween() const
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{
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return clip_bottom;
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}
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inline const tween<float>& camera::get_clip_top_tween() const
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{
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return clip_top;
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}
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inline const tween<float>& camera::get_clip_near_tween() const
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{
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return clip_near;
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}
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inline const tween<float>& camera::get_clip_far_tween() const
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{
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return clip_far;
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}
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inline const tween<float>& camera::get_fov_tween() const
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{
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return fov;
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}
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inline const tween<float>& camera::get_aspect_ratio_tween() const
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{
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return aspect_ratio;
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}
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inline const tween<float4x4>& camera::get_view_tween() const
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{
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return view;
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}
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inline const tween<float4x4>& camera::get_projection_tween() const
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{
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return projection;
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}
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inline const tween<float4x4>& camera::get_view_projection_tween() const
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{
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return view_projection;
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}
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inline const tween<float>& camera::get_exposure_tween() const
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{
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return exposure;
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}
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} // namespace scene
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#endif // ANTKEEPER_SCENE_CAMERA_HPP
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