Initial Commit

include/fennec/math/vector_base.h

@@ -0,0 +1,98 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program 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 General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+
+#ifndef VECTOR_BASE_H
+#define VECTOR_BASE_H
+
+#include <fennec/math/detail/__fwd.h>
+
+#include <fennec/math/swizzle.h>
+#include <fennec/math/vector_storage.h>
+
+#include <fennec/containers/array.h>
+
+namespace fennec
+{
+
+namespace detail
+{
+
+///
+/// \struct vector_base_type_helper
+/// \brief helper class for generating vectors
+/// \tparam scalar base scalar type
+/// \tparam size size of the vector type
+template<typename scalar, size_t size>
+struct vector_base_type_helper
+{
+	///
+	/// \var SizeV
+	/// \brief size of the vector type
+	inline static constexpr size_t SizeV = size;
+
+
+	///
+	/// \typedef ScalarT
+	/// \brief Base scalar type
+	using ScalarT = scalar;
+
+	///
+	/// \typedef VectorT
+	/// \brief Base vector type
+	using VectorT = vec<ScalarT, SizeV>;
+
+	///
+	/// \typedef DataT
+	/// \brief Backing array holding the elements
+	using DataT = array<ScalarT, SizeV>;
+
+	///
+	/// \struct SwizzleGen
+	/// \brief Helper for generating a swizzle from a set of indices
+	/// \tparam IndicesV Indices of the vector to pull from
+	template<size_t...IndicesV> struct SwizzleGen
+	{
+		/// \brief generated swizzle type
+		using type = swizzle<VectorT, DataT, ScalarT, IndicesV...>;
+	};
+
+	///
+	/// \struct SwizzleGen<IndexV>
+	/// \brief Partial Specialization for single component swizzles to decay into a scalar
+	/// \tparam IndexV
+	template<size_t IndexV> struct SwizzleGen<IndexV>
+	{
+		/// \brief decayed scalar type
+		using type = ScalarT;
+	};
+
+	///
+	/// \typedef StorageT
+	/// \brief backing storage type
+	using StorageT = vector_storage<SizeV, SwizzleGen, DataT>;
+};
+
+template<typename ScalarT, size_t SizeV>
+using vector_base_type = typename vector_base_type_helper<ScalarT, SizeV>::StorageT;
+
+}
+
+}
+
+#endif //VECTOR_BASE_H