Add initial prototype.

2-low/collada/source/collada-asset.ads

@@ -0,0 +1,37 @@
+with
+     ada.Calendar;
+
+package collada.Asset
+--
+-- Models a collada asset.
+--
+is
+
+   type Contributor is
+      record
+         Author         : Text;
+         authoring_Tool : Text;
+      end record;
+
+
+   type Unit is
+      record
+         Name  : Text;
+         Meter : Float;
+      end record;
+
+
+   type up_Direction is (X_up, Y_up, Z_up);
+
+
+
+   type Item is
+      record
+         Contributor : asset.Contributor;
+         Created     : ada.Calendar.Time;
+         Modified    : ada.Calendar.Time;
+         Unit        : asset.Unit;
+         up_Axis     : up_Direction;
+      end record;
+
+end collada.Asset;