💿🐜 Antkeeper source code
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.6 KiB
85 lines
2.6 KiB
/*
|
|
* Copyright (C) 2023 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/>.
|
|
*/
|
|
|
|
#include <engine/scene/rectangle-light.hpp>
|
|
#include <engine/math/numbers.hpp>
|
|
|
|
namespace scene {
|
|
|
|
rectangle_light::rectangle_light()
|
|
{
|
|
transformed();
|
|
}
|
|
|
|
void rectangle_light::set_size(const math::fvec2& size)
|
|
{
|
|
set_scale({size.x(), size.y(), 1.0f});
|
|
}
|
|
|
|
void rectangle_light::transformed()
|
|
{
|
|
const auto& transform = get_transform();
|
|
|
|
// Update corner positions
|
|
// m_corners[0] = transform * math::fvec3{-0.5f, 0.0f, -0.5f};
|
|
// m_corners[1] = transform * math::fvec3{ 0.5f, 0.0f, -0.5f};
|
|
// m_corners[2] = transform * math::fvec3{ 0.5f, 0.0f, 0.5f};
|
|
// m_corners[3] = transform * math::fvec3{-0.5f, 0.0f, 0.5f};
|
|
m_corners[0] = transform * math::fvec3{-0.5f, -0.5f, 0.0f};
|
|
m_corners[1] = transform * math::fvec3{-0.5f, 0.5f, 0.0f};
|
|
m_corners[2] = transform * math::fvec3{ 0.5f, 0.5f, 0.0f};
|
|
m_corners[3] = transform * math::fvec3{ 0.5f, -0.5f, 0.0f};
|
|
|
|
// Update area
|
|
m_area = get_scale().x() * get_scale().y();
|
|
area_updated();
|
|
}
|
|
|
|
void rectangle_light::color_updated()
|
|
{
|
|
m_colored_luminous_flux = get_color() * m_luminous_flux;
|
|
m_colored_luminance = get_color() * m_luminance;
|
|
}
|
|
|
|
void rectangle_light::area_updated() noexcept
|
|
{
|
|
// Calculate luminance from luminous flux
|
|
m_luminance = m_luminous_flux / (m_area * math::pi<float>);
|
|
m_colored_luminance = get_color() * m_luminance;
|
|
}
|
|
|
|
void rectangle_light::luminous_flux_updated() noexcept
|
|
{
|
|
m_colored_luminous_flux = get_color() * m_luminous_flux;
|
|
|
|
// Calculate luminance from luminous flux
|
|
m_luminance = m_luminous_flux / (m_area * math::pi<float>);
|
|
m_colored_luminance = get_color() * m_luminance;
|
|
}
|
|
|
|
void rectangle_light::luminance_updated() noexcept
|
|
{
|
|
m_colored_luminance = get_color() * m_luminance;
|
|
|
|
// Calculate luminous flux from luminance
|
|
m_luminous_flux = m_luminance * (m_area * math::pi<float>);
|
|
m_colored_luminous_flux = get_color() * m_luminous_flux;
|
|
}
|
|
|
|
} // namespace scene
|