- /*
- * Copyright (C) 2021 Christopher J. Howard
- *
- * This file is part of Antkeeper source code.
- *
- * Antkeeper source code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Antkeeper source code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef ANTKEEPER_SCENE_LIGHT_HPP
- #define ANTKEEPER_SCENE_LIGHT_HPP
-
- #include "scene/object.hpp"
- #include "geom/sphere.hpp"
- #include "utility/fundamental-types.hpp"
-
- namespace scene {
-
- /// Light object type enumerations.
- enum class light_type
- {
- /// Denotes an ambient light.
- ambient,
-
- /// Denotes a directional light.
- directional,
-
- /// Denotes a point light.
- point,
-
- /// Denotes a spot light.
- spot
- };
-
- /**
- * Abstract base class for light objects.
- */
- class light: public object<light>
- {
- public:
- typedef geom::sphere<float> sphere_type;
-
- /// Creates a light.
- light();
-
- /// Returns an enumeration denoting the light object type.
- virtual light_type get_light_type() const = 0;
-
- /**
- * Sets the color of the light.
- *
- * @param color Scene-linear light color.
- */
- void set_color(const float3& color);
-
- /**
- * Sets the intensity of the light.
- *
- * @param intensity Light intensity.
- */
- void set_intensity(float intensity);
-
- /// Returns the local-space bounding volume of the light.
- virtual const bounding_volume_type& get_local_bounds() const;
-
- /// Returns the world-space bounding volume of the light.
- virtual const bounding_volume_type& get_world_bounds() const;
-
- /// Returns the light color.
- const float3& get_color() const;
-
- /// Returns the light intensity.
- float get_intensity() const;
-
- /// Returns the intensity-scaled light color.
- const float3& get_scaled_color() const;
-
- const tween<float3>& get_color_tween() const;
- const tween<float>& get_intensity_tween() const;
- const tween<float3>& get_scaled_color_tween() const;
-
- /// @copydoc object_base::update_tweens();
- virtual void update_tweens();
-
- private:
- virtual void transformed();
-
- tween<float3> color;
- tween<float> intensity;
- tween<float3> scaled_color;
- sphere_type local_bounds;
- sphere_type world_bounds;
- };
-
- inline const typename object_base::bounding_volume_type& light::get_local_bounds() const
- {
- return local_bounds;
- }
-
- inline const typename object_base::bounding_volume_type& light::get_world_bounds() const
- {
- return world_bounds;
- }
-
- inline const float3& light::get_color() const
- {
- return color[1];
- }
-
- inline float light::get_intensity() const
- {
- return intensity[1];
- }
-
- inline const float3& light::get_scaled_color() const
- {
- return scaled_color[1];
- }
-
- inline const tween<float3>& light::get_color_tween() const
- {
- return color;
- }
-
- inline const tween<float>& light::get_intensity_tween() const
- {
- return intensity;
- }
-
- inline const tween<float3>& light::get_scaled_color_tween() const
- {
- return scaled_color;
- }
-
- } // namespace scene
-
- #endif // ANTKEEPER_SCENE_LIGHT_HPP
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