💿🐜 Antkeeper source code
https://antkeeper.com
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121 lines
3.0 KiB
121 lines
3.0 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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#include <engine/scene/static-mesh.hpp>
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#include <engine/render/model.hpp>
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#include <engine/render/material.hpp>
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#include <engine/scene/camera.hpp>
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namespace scene {
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static_mesh::static_mesh(std::shared_ptr<render::model> model)
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{
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set_model(model);
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}
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void static_mesh::set_model(std::shared_ptr<render::model> model)
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{
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m_model = model;
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if (m_model)
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{
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m_operations.resize(m_model->get_groups().size());
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for (std::size_t i = 0; i < m_operations.size(); ++i)
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{
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const auto& group = m_model->get_groups()[i];
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auto& operation = m_operations[i];
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operation.vertex_array = m_model->get_vertex_array().get();
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operation.drawing_mode = group.drawing_mode;
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operation.start_index = group.start_index;
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operation.index_count = group.index_count;
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operation.material = group.material;
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}
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}
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else
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{
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m_operations.clear();
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}
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transformed();
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}
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void static_mesh::set_material(std::size_t index, std::shared_ptr<render::material> material)
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{
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if (material)
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{
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m_operations[index].material = material;
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}
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else
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{
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m_operations[index].material = m_model->get_groups()[index].material;
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}
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}
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void static_mesh::reset_materials()
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{
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for (std::size_t i = 0; i < m_operations.size(); ++i)
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{
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m_operations[i].material = m_model->get_groups()[i].material;
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}
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}
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void static_mesh::update_bounds()
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{
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if (m_model)
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{
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// Get model bounds
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const auto& model_bounds = m_model->get_bounds();
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// Naive algorithm: transform each corner of the model AABB
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m_bounds = {math::fvec3::infinity(), -math::fvec3::infinity()};
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for (std::size_t i = 0; i < 8; ++i)
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{
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m_bounds.extend(get_transform() * model_bounds.corner(i));
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}
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}
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else
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{
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m_bounds = {get_translation(), get_translation()};
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}
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}
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void static_mesh::transformed()
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{
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update_bounds();
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const math::fmat4 transform_matrix = get_transform().matrix();
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for (auto& operation: m_operations)
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{
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operation.transform = transform_matrix;
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}
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}
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void static_mesh::render(render::context& ctx) const
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{
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const float depth = ctx.camera->get_view_frustum().near().distance(get_translation());
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for (auto& operation: m_operations)
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{
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operation.depth = depth;
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operation.layer_mask = get_layer_mask();
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ctx.operations.push_back(&operation);
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}
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}
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} // namespace scene
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