Added FBM 3D & 4D and HybridMultiFractal 2D + cleaned code

this commit will change the scale of values produced by fbm2d. This will
probably not happen again. As a consequence, fbm values will always be
constrained between -1 and 1, but do not perfectly stick to that scale.
There is no easy solution, if the user wants the best dynamic between -1
and 1, he should adjust manually the value by multiplying by a gain slightly superior to 1.


Former-commit-id: ebdba9e9f4bbb972abe355c07ec9f8bce42329b9

include/Nazara/Noise/FBM2D.hpp

@@ -4,8 +4,8 @@
 
 #pragma once
 
-#ifndef FBM2DNOISE_HPP
-#define FBM2DNOISE_HPP
+#ifndef FBM2D_HPP
+#define FBM2D_HPP
 
 #include <Nazara/Prerequesites.hpp>
 #include <Nazara/Noise/ComplexNoiseBase.hpp>
@@ -25,4 +25,4 @@ class NAZARA_API NzFBM2D : public NzAbstract2DNoise, public NzComplexNoiseBase
         nzNoises m_noiseType;
 };
 
-#endif // FBM2DNOISE_HPP
+#endif // FBM2D_HPP