💿🐜 Antkeeper source code
https://antkeeper.com
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107 lines
2.5 KiB
107 lines
2.5 KiB
/*
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* Copyright (C) 2021 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 "scene/object.hpp"
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#include "geom/aabb.hpp"
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#include "utility/fundamental-types.hpp"
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class material;
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namespace scene {
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/// Enumerates billboard types.
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enum class billboard_type
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{
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// No alignment
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flat,
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// Aligns to face camera
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spherical,
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// Rotates about an alignment axis to face camera
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cylindrical
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};
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/**
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* A 2D unit quad with one 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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typedef geom::aabb<float> aabb_type;
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billboard();
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billboard(const billboard& other);
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billboard& operator=(const billboard& other);
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void set_material(material* material);
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/// Sets the billboard alignment mode.
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void set_billboard_type(billboard_type type);
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/// Sets the axis around which the billboard will be rotated when the alignment is set to billboard_alignment::cylindrical.
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void set_alignment_axis(const float3& axis);
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virtual const bounding_volume_type& get_bounds() const;
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material* get_material() const;
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billboard_type get_billboard_type() const;
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const float3& get_alignment_axis() const;
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virtual void update_tweens();
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private:
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static const aabb_type untransformed_bounds;
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virtual void transformed();
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aabb_type bounds;
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material* material;
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billboard_type type;
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float3 alignment_axis;
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};
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inline const typename object_base::bounding_volume_type& billboard::get_bounds() const
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{
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return bounds;
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}
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inline material* billboard::get_material() const
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{
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return material;
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}
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inline billboard_type billboard::get_billboard_type() const
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{
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return type;
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}
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inline const float3& billboard::get_alignment_axis() const
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{
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return alignment_axis;
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}
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} // namespace scene
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#endif // ANTKEEPER_SCENE_BILLBOARD_HPP
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