Added NzImage::Get/SetPixel(Face)

NzImage::Update(const nzUInt8* pixels, const NzRectui& rect) now takes a
third argument to specify the layer of the 3D image (if a 3D image),
default to 0
Optimized NzPixelFormat conversion from RGBA4
Added NzColor

src/Nazara/Core/Color.cpp

@@ -0,0 +1,16 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine".
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Color.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+const NzColor NzColor::Black(0, 0, 0);
+const NzColor NzColor::Blue(0, 0, 255);
+const NzColor NzColor::Cyan(0, 255, 255);
+const NzColor NzColor::Green(0, 255, 0);
+const NzColor NzColor::Magenta(255, 0, 255);
+const NzColor NzColor::Orange(255, 165, 0);
+const NzColor NzColor::Red(255, 0, 0);
+const NzColor NzColor::Yellow(255, 255, 0);
+const NzColor NzColor::White(255, 255, 255);