💿🐜 Antkeeper source code
https://antkeeper.com
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138 lines
3.3 KiB
138 lines
3.3 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_SPOT_LIGHT_HPP
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#define ANTKEEPER_SCENE_SPOT_LIGHT_HPP
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#include "scene/light.hpp"
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#include "utility/fundamental-types.hpp"
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namespace scene {
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/**
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* Directional cone light source.
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*/
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class spot_light: public light
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{
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public:
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/// Creates a spot light.
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spot_light();
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/// Returns light_type::spot
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virtual light_type get_light_type() const;
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/**
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* Sets the attenuation factors of the light.
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*
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* @param attenuation Vector containing the constant, linear, and quadratic attenuation factors, as x, y, and z, respectively.
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*/
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void set_attenuation(const float3& attenuation);
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/**
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* Sets the spot light cutoff angles.
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*
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* @param cutoff Vector containing the inner and outer cutoff angles, as x and y, respectively.
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*/
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void set_cutoff(const float2& cutoff);
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/// Returns the direction vector.
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const float3& get_direction() const;
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/// Returns the attenuation factors of the light.
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const float3& get_attenuation() const;
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/// Returns the spot light cutoff angles.
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const float2& get_cutoff() const;
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/// Returns the cosine of the spot light cutoff angles.
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const float2& get_cosine_cutoff() const;
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/// Returns the direction tween.
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const tween<float3>& get_direction_tween() const;
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/// Returns the attenuation tween.
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const tween<float3>& get_attenuation_tween() const;
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/// Returns the cutoff tween.
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const tween<float2>& get_cutoff_tween() const;
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/// Returns the cosine cutoff tween.
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const tween<float2>& get_cosine_cutoff_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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tween<float3> direction;
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tween<float3> attenuation;
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tween<float2> cutoff;
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tween<float2> cosine_cutoff;
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};
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inline light_type spot_light::get_light_type() const
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{
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return light_type::spot;
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}
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inline const float3& spot_light::get_direction() const
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{
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return direction[1];
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}
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inline const float3& spot_light::get_attenuation() const
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{
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return attenuation[1];
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}
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inline const float2& spot_light::get_cutoff() const
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{
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return cutoff[1];
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}
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inline const float2& spot_light::get_cosine_cutoff() const
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{
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return cosine_cutoff[1];
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}
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inline const tween<float3>& spot_light::get_direction_tween() const
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{
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return direction;
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}
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inline const tween<float3>& spot_light::get_attenuation_tween() const
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{
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return attenuation;
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}
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inline const tween<float2>& spot_light::get_cutoff_tween() const
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{
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return cutoff;
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}
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inline const tween<float2>& spot_light::get_cosine_cutoff_tween() const
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{
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return cosine_cutoff;
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}
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} // namespace scene
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#endif // ANTKEEPER_SCENE_SPOT_LIGHT_HPP
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