From 56586f450757e8c797a3548e62f835dcbf21be53 Mon Sep 17 00:00:00 2001
From: Joseph Walton-Rivers <joseph@walton-rivers.uk>
Date: Sun, 19 Jun 2022 22:58:12 +0100
Subject: [PATCH] data structures for animation, not currently used
---
include/fggl/animation/skeleton.hpp | 60 +++++++++++++++++++++++++++++
include/fggl/math/types.hpp | 1 +
2 files changed, 61 insertions(+)
create mode 100644 include/fggl/animation/skeleton.hpp
diff --git a/include/fggl/animation/skeleton.hpp b/include/fggl/animation/skeleton.hpp
new file mode 100644
index 0000000..7a4169b
--- /dev/null
+++ b/include/fggl/animation/skeleton.hpp
@@ -0,0 +1,60 @@
+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 19/06/22.
+// Derived from Game Engine Architecture, 3rd Edition, Chapter 12
+//
+
+#ifndef FGGL_ANIMATION_SKELETON_HPP
+#define FGGL_ANIMATION_SKELETON_HPP
+
+#include <array>
+#include "fggl/math/types.hpp"
+
+namespace fggl::anim {
+
+ struct Joint {
+ math::mat4 m_invBindPose;
+ math::uint8 m_parent;
+ };
+
+ struct Skeleton {
+ std::size_t m_size;
+ std::array<Joint, 255> m_joints;
+ };
+
+ struct JointPose {
+ math::quat m_rot;
+ math::vec3 m_trans;
+ float m_scale;
+ };
+
+ struct SkeletonPose {
+ Skeleton* m_skel;
+ JointPose* m_localPose;
+ math::mat4* m_globalPose;
+ };
+
+ struct SkinnedVertex {
+ math::vec3 m_pos;
+ math::vec3 m_normal;
+ math::vec2 m_tex;
+ std::array<math::uint8, 4> m_joint_idx;
+ std::array<float, 3> m_joint_weights;
+ };
+
+} // namespace fggl::anim
+
+#endif //FGGL_ANIMATION_SKELETON_HPP
diff --git a/include/fggl/math/types.hpp b/include/fggl/math/types.hpp
index 936fd66..8349557 100644
--- a/include/fggl/math/types.hpp
+++ b/include/fggl/math/types.hpp
@@ -39,6 +39,7 @@ namespace fggl::math {
constexpr float HALF_PI = M_PI_2;
constexpr float TAU = PI * 2;
+ using uint8 = std::uint8_t;
// math types (aliased for ease of use)
using vec4 = glm::vec4;
--
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