Vertex declaration changes (#135)

* Add type to ComponentType conversion

* Change type to ComponentType conversion

* Change assert to condition, add check on particle mapper.

* Change particle life type

* Changes as requested

* Fix Travis try 1

* Changes as requested

* move IsSuitableForComponent to inl

include/Nazara/Utility/Mesh.hpp

@@ -1,4 +1,4 @@
-// Copyright (C) 2017 Jérôme Leclercq
+// Copyright (C) 2017 Jérôme Leclercq
 // This file is part of the "Nazara Engine - Utility module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
@@ -36,6 +36,13 @@ namespace Nz
 		bool center = false;                        ///< If true, will center the mesh vertices around the origin
 		bool optimizeIndexBuffers = true;           ///< Optimize the index buffers after loading, improve cache locality (and thus rendering speed) but increase loading time.
 
+		/* The declaration must have a Vector3f position component enabled
+		 * If the declaration has a Vector2f UV component enabled, UV are generated
+		 * If the declaration has a Vector3f Normals component enabled, Normals are generated.
+		 * If the declaration has a Vector3f Tangents component enabled, Tangents are generated.
+		 */
+		VertexDeclaration* vertexDeclaration = VertexDeclaration::Get(VertexLayout_XYZ_Normal_UV_Tangent);
+
 		bool IsValid() const;
 	};