data structures for animation, not currently used

include/fggl/animation/skeleton.hpp

+/*
+ * 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

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;