New struct DimensionTraits for matrix, vector and point specializations.

src/DimensionTraits.h

@@ -0,0 +1,109 @@
+#ifndef Magnum_DimensionTraits_h
+#define Magnum_DimensionTraits_h
+/*
+    Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
+
+    This file is part of Magnum.
+
+    Magnum is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License version 3
+    only, as published by the Free Software Foundation.
+
+    Magnum 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 version 3 for more details.
+*/
+
+#include <cstdint>
+
+/** @file
+ * @brief Class Magnum::DimensionTraits
+ */
+
+namespace Magnum {
+
+namespace Math {
+    template<size_t, class> class Vector;
+    template<class> class Vector2;
+    template<class> class Vector3;
+
+    template<class> class Point2D;
+    template<class> class Point3D;
+
+    template<class> class Matrix3;
+    template<class> class Matrix4;
+}
+
+/** @brief Matrix, point and vector specializations for given dimension count */
+template<std::uint8_t dimensions, class T> struct DimensionTraits {
+    #ifdef DOXYGEN_GENERATING_OUTPUT
+    /**
+     * @brief Vector type
+     *
+     * Math::Vector, Math::Vector2 or Math::Vector3 based on dimension count.
+     */
+    typedef U VectorType;
+
+    /**
+     * @brief Point type
+     *
+     * Floating-point Math::Point2D or Math::Point3D for 2D or 3D. No point
+     * type defined for one dimension and integral types.
+     */
+    typedef U PointType;
+
+    /**
+     * @brief Matrix type
+     *
+     * Floating-point Math::Matrix3 or Math::Matrix4 for 2D or 3D. No matrix
+     * type defined for one dimension and integral types.
+     */
+    typedef U MatrixType;
+    #endif
+};
+
+#ifndef DOXYGEN_GENERATING_OUTPUT
+/* One dimension */
+template<class T> struct DimensionTraits<1, T> {
+    typedef Math::Vector<1, T> VectorType;
+};
+
+/* Two dimensions - integral */
+template<class T> struct DimensionTraits<2, T> {
+    typedef Math::Vector2<T> VectorType;
+};
+
+/* Two dimensions - floating-point */
+template<> struct DimensionTraits<2, float> {
+    typedef Math::Vector2<float> VectorType;
+    typedef Math::Point2D<float> PointType;
+    typedef Math::Matrix3<float> MatrixType;
+};
+template<> struct DimensionTraits<2, double> {
+    typedef Math::Vector2<double> VectorType;
+    typedef Math::Point2D<double> PointType;
+    typedef Math::Matrix3<double> MatrixType;
+};
+
+/* Three dimensions - integral */
+template<class T> struct DimensionTraits<3, T> {
+    typedef Math::Vector3<T> VectorType;
+};
+
+/* Three dimensions - floating-point */
+template<> struct DimensionTraits<3, float> {
+    typedef Math::Vector3<float> VectorType;
+    typedef Math::Point3D<float> PointType;
+    typedef Math::Matrix4<float> MatrixType;
+};
+template<> struct DimensionTraits<3, double> {
+    typedef Math::Vector3<double> VectorType;
+    typedef Math::Point3D<double> PointType;
+    typedef Math::Matrix4<double> MatrixType;
+};
+#endif
+
+}
+
+#endif