/* * 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 . */ #include #include 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); 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); 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); m_colored_luminous_flux = get_color() * m_luminous_flux; } } // namespace scene