Add forgotten coord base class header

detail/coord.hpp

@@ -0,0 +1,93 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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.
+ * 
+ * libgim 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 libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2012 Danny Robson <danny@nerdcruft.net>
+ */
+
+#ifndef __UTIL_COORD_HPP
+#define __UTIL_COORD_HPP
+
+namespace util {
+    namespace detail {
+        // Disable GCC warnings about validity of anonyous structures in
+        // unions. Push comes to shove I'll manually redsign everything to
+        // keep this syntax anyway.
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-pedantic"
+        template <size_t S>
+        struct coord_data {
+            coord_data () { ; }
+
+            template <typename ...T>
+            coord_data (T ...t): data{t...}
+            { ; }
+
+            double data[S];
+        };
+
+        template <>
+        struct coord_data<1> {
+            coord_data () { ; }
+
+            template <typename ...T>
+            coord_data (T ...t): data{t...}
+            { ; }
+
+            union {
+                double data[1];
+                double x;
+            };
+        };
+
+        template <>
+        struct coord_data<2> {
+            coord_data () { ; }
+
+            template <typename ...T>
+            coord_data (T ...t): data{t...}
+            { ; }
+
+            union {
+                double data[2];
+                struct {
+                    double x;
+                    double y;
+                };
+            };
+        };
+
+        template <>
+        struct coord_data<3> {
+            union {
+                double data[3];
+                struct {
+                    double x;
+                    double y;
+                    double z;
+                };
+            };
+
+            coord_data () { ; }
+
+            template <typename... T>
+            coord_data (T... t): data{t...}
+            { ; }
+        };
+#pragma GCC diagnostic pop
+    }
+}
+
+#endif