💿🐜 Antkeeper source code
https://antkeeper.com
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125 lines
3.2 KiB
125 lines
3.2 KiB
/*
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* Copyright (C) 2023 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_RECTANGLE_LIGHT_HPP
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#define ANTKEEPER_SCENE_RECTANGLE_LIGHT_HPP
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#include <engine/scene/light.hpp>
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#include <engine/math/vector.hpp>
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namespace scene {
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/**
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* Rectangular area light.
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*/
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class rectangle_light: public light
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{
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public:
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/// Constructs a rectangular area light.
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rectangle_light();
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/// Returns light_type::rectangle.
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[[nodiscard]] inline light_type get_light_type() const noexcept override
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{
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return light_type::rectangle;
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}
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/**
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* Sets the size of the light.
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*
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* @param size Dimensions of the light.
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*/
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void set_size(const math::fvec2& size);
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/**
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* Sets the luminous flux of the light.
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*
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* @param luminous_flux Luminous flux.
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*/
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inline void set_luminous_flux(float luminous_flux) noexcept
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{
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m_luminous_flux = luminous_flux;
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luminous_flux_updated();
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}
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/**
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* Sets the luminance of the light.
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*
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* @param luminance Luminance.
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*/
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inline void set_luminance(float luminance) noexcept
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{
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m_luminance = luminance;
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luminance_updated();
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}
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/// Returns the dimensions of the light.
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[[nodiscard]] inline constexpr math::fvec2 get_size() const noexcept
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{
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return math::fvec2(get_scale());
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}
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/// Returns the luminous flux of the light.
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[[nodiscard]] inline constexpr float get_luminous_flux() const noexcept
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{
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return m_luminous_flux;
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}
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/// Returns the color-modulated luminous flux of the light.
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[[nodiscard]] inline constexpr const math::fvec3& get_colored_luminous_flux() const noexcept
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{
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return m_colored_luminous_flux;
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}
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/// Returns the luminance of the light.
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[[nodiscard]] inline constexpr float get_luminance() const noexcept
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{
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return m_luminance;
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}
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/// Returns the color-modulated luminance of the light.
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[[nodiscard]] inline constexpr const math::fvec3& get_colored_luminance() const noexcept
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{
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return m_colored_luminance;
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}
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/// Returns the world-space positions of the light corners.
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[[nodiscard]] inline constexpr std::span<const math::fvec3, 4> get_corners() const noexcept
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{
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return m_corners;
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}
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private:
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void transformed() override;
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void color_updated() override;
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void area_updated() noexcept;
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void luminous_flux_updated() noexcept;
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void luminance_updated() noexcept;
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float m_area{1.0f};
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math::fvec3 m_corners[4];
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float m_luminous_flux{};
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math::fvec3 m_colored_luminous_flux{};
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float m_luminance{};
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math::fvec3 m_colored_luminance{};
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};
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} // namespace scene
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#endif // ANTKEEPER_SCENE_RECTANGLE_LIGHT_HPP
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