Refactor, separate docs from headers, add ru docs

Doxygen kind'a sucks and I need multilanguage documentation, so I did
that. Also, separated massive Math.h file into smaller files.

include/BH/Math/Quat.h

@@ -0,0 +1,105 @@
+#ifndef BH_MATH_QUAT_H
+#define BH_MATH_QUAT_H
+
+#include "../Common.h"
+#include "Vec4f.h"
+
+
+#define BH_Quat4fAdd(a, b, out) \
+    BH_Vec4fAdd(a, b, out)
+
+
+
+#define BH_Quat4fSub(a, b, out) \
+    BH_Vec4fSub(a, b, out)
+
+
+
+#define BH_Quat4fScale(a, b, out) \
+    BH_Vec4fScale(a, b, out)
+
+
+
+#define BH_Quat4fNegate(in, out) \
+    BH_Vec4fNegate(in, out)
+
+
+
+#define BH_Quat4fDot(a, b) \
+    BH_Vec4fDot(a, b)
+
+
+
+#define BH_Quat4fLength(in) \
+    BH_Vec4fLength(in)
+
+
+
+#define BH_Quat4fNormal(in, out) \
+    BH_Vec4fNormal(in, out)
+
+
+
+#define BH_Quat4fLerp(a, b, t, out) \
+    BH_Vec4fLerp(a, b, t, out)
+
+
+
+void BH_Quat4fIdentity(float out[4]);
+
+
+
+void BH_Quat4fConjugate(const float in[4],
+                        float out[4]);
+
+
+
+void BH_Quat4fInverse(const float in[4],
+                      float out[4]);
+
+
+
+void BH_Quat4fMul(const float a[4],
+                  const float b[4],
+                  float out[4]);
+
+
+
+void BH_Quat4fSlerp(const float a[4],
+                    const float b[4],
+                    float t,
+                    float out[4]);
+
+
+
+void BH_Quat4fFromEuler(float roll,
+                        float pitch,
+                        float yaw,
+                        float out[4]);
+
+
+
+void BH_Quat4fFromAxis(const float axis[3],
+                       float angle,
+                       float out[4]);
+
+
+
+void BH_Quat4fToEuler(const float in[4],
+                      float *roll,
+                      float *pitch,
+                      float *yaw);
+
+
+
+void BH_Quat4fToAxis(const float in[4],
+                     float axis[3],
+                     float *angle);
+
+
+
+void BH_Quat4fToMat4f(const float in[4],
+                      float out[16]);
+
+
+#endif /* BH_MATH_QUAT */