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#ifndef _HAIR_VR_PRIM_SHARED_FUCTIONS_H_
#define _HAIR_VR_PRIM_SHARED_FUCTIONS_H_
// Shave and a Haircut
// (c) 2019 Epic Games
// US Patent 6720962
/**********************************************************************
*<
FILE: shaveVraySharedFunctions.h
DESCRIPTION: Various shared functions
CREATED BY: Vladimir Dubovoy <[email protected]>
HISTORY: created 21-08-2008 ( as part of 3ds Max + VRay hair shaders)
merged 31-03-2010
*>
**********************************************************************/
#include <vraybase.h>
#include "hairAPIvray.h"
// The following ifdef block is the standard way of creating macros which make exporting
// from a DLL simpler. All files within this DLL are compiled with the HAIRVRAY_EXPORTS
// symbol defined on the command line. this symbol should not be defined on any project
// that uses this DLL. This way any other project whose source files include this file see
// SHAVEVRAYSH_API functions as being imported from a DLL, whereas this DLL sees symbols
// defined with this macro as being exported.
#ifdef WIN32
#ifdef HAIRVRAY_EXPORTS
#define HAIRVRAY_API __declspec(dllexport)
#else
#define HAIRVRAY_API __declspec(dllimport)
#endif
#else
#define HAIRVRAY_API
#endif
#ifdef WIN32
extern HINSTANCE hInstance;
#endif
extern PFNCREATEBSDFPOOL CreateShaveBSDFPool;
bool LoadShaveBSDFPoolLib(const char* libPath = NULL);
void UnLoadShaveBSDFPoolLib();
inline void GenOrthVectors(const VR::Vector& in, VR::Vector& u, VR::Vector& v)
{
u = (in.x != 0.0f || in.y != 0.0f) ?
normalize(VR::Vector(-in.y, in.x, 0.0f)) :
VR::Vector(1.0f, 0.0f, 0.0f);
v = normalize(in^u);
}
#endif //end of_HAIR_VR_PRIM_SHARED_FUCTIONS_H_
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