Added IndexMapper

Former-commit-id: 994b30f41161855827d920b6c128a5bbd480929b

include/Nazara/Utility/IndexMapper.hpp

@@ -0,0 +1,39 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_VERTEXITERATOR_HPP
+#define NAZARA_VERTEXITERATOR_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/Utility/BufferMapper.hpp>
+
+class NzIndexBuffer;
+class NzSubMesh;
+
+using NzIndexMapperGetter = nzUInt32 (*)(const void* buffer, unsigned int i);
+using NzIndexMapperSetter = void (*)(void* buffer, unsigned int i, nzUInt32 value);
+
+class NAZARA_API NzIndexMapper
+{
+	public:
+		NzIndexMapper(NzIndexBuffer* indexBuffer, nzBufferAccess access = nzBufferAccess_ReadWrite);
+		NzIndexMapper(const NzIndexBuffer* indexBuffer);
+		NzIndexMapper(const NzSubMesh* subMesh);
+		~NzIndexMapper() = default;
+
+		nzUInt32 Get(unsigned int i) const;
+
+		void Set(unsigned int i, nzUInt32 value);
+
+		void Unmap();
+
+	private:
+		NzBufferMapper<NzIndexBuffer> m_mapper;
+		NzIndexMapperGetter m_getter;
+		NzIndexMapperSetter m_setter;
+};
+
+#endif // NAZARA_VERTEXITERATOR_HPP