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/*
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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_ANIMATION_POSE_HPP
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#define ANTKEEPER_ANIMATION_POSE_HPP
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#include "animation/bone.hpp"
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#include "math/transform-type.hpp"
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#include "utility/fundamental-types.hpp"
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#include <map>
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/**
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* Skeletal animation pose.
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*/
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typedef std::map<bone, math::transform<float>, bone_index_compare> pose;
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/**
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* Transforms a pose from bone-space into skeleton-space.
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*
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* @param[in] bone_space Bone-space pose.
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* @param[out] skeleton_space Skeleton-space pose.
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*
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* @warning If the index of any child bone is greater than its parent index, the concatenated pose may be incorrect.
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*/
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void concatenate(const pose& bone_space, pose& skeleton_space);
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/**
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* Inverses each transform in a pose.
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*
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* @param[in] x Input pose.
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* @param[out] y Output pose.
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*/
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void inverse(const pose& x, pose& y);
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/**
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* Generates a skinning matrix palette from a pose.
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*
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* @param inverse_bind_pose Inverse of the skeleton-space bind pose.
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* @param pose Bone-space Skeleton-space pose.
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*/
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void matrix_palette(const pose& inverse_bind_pose, const pose& pose, float4x4* palette);
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#endif // ANTKEEPER_ANIMATION_POSE_HPP
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