💿🐜 Antkeeper source code
https://antkeeper.com
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102 lines
2.7 KiB
102 lines
2.7 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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#ifndef ANTKEEPER_SCENE_BILLBOARD_HPP
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#define ANTKEEPER_SCENE_BILLBOARD_HPP
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#include <engine/scene/object.hpp>
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#include <engine/math/vector.hpp>
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#include <engine/render/material.hpp>
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#include <engine/render/operation.hpp>
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#include <engine/gl/vertex-array.hpp>
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#include <engine/gl/vertex-buffer.hpp>
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#include <engine/scene/billboard-type.hpp>
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#include <memory>
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namespace scene {
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/**
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* 2D unit quad with a single material.
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*/
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class billboard: public object<billboard>
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{
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public:
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/// Constructs a billboard.
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billboard();
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void render(render::context& ctx) const override;
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/**
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* Sets the billboard material.
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*
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* @param material Billboard material.
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*/
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void set_material(std::shared_ptr<render::material> material);
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/**
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* Sets the billboard type.
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*
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* @param type Billboard type.
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*/
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void set_billboard_type(billboard_type type);
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/**
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* Sets alignment axis for cylindrical billboards.
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*
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* @param axis Cylindral billboard aligmment axis.
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*/
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inline void set_alignment_axis(const math::vector<float, 3>& axis) noexcept
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{
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m_alignment_axis = axis;
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}
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[[nodiscard]] inline const aabb_type& get_bounds() const noexcept override
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{
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return m_bounds;
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}
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[[nodiscard]] inline std::shared_ptr<render::material> get_material() const noexcept
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{
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return m_render_op.material;
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}
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[[nodiscard]] inline billboard_type get_billboard_type() const noexcept
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{
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return m_billboard_type;
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}
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[[nodiscard]] inline const math::vector<float, 3>& get_alignment_axis() const noexcept
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{
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return m_alignment_axis;
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}
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private:
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void transformed() override;
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std::unique_ptr<gl::vertex_buffer> m_vbo;
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std::unique_ptr<gl::vertex_array> m_vao;
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mutable render::operation m_render_op;
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aabb_type m_bounds{{-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f}};
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billboard_type m_billboard_type{billboard_type::flat};
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math::vector<float, 3> m_alignment_axis{0.0f, 1.0f, 0.0f};
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};
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} // namespace scene
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#endif // ANTKEEPER_SCENE_BILLBOARD_HPP
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