www.pudn.com > snow.rar > CommonFuncs.h

 
#if !defined(AFX_COMMONFUNCS_H__DC47117F_2750_4C69_A954_184DB6487700__INCLUDED_) 
#define AFX_COMMONFUNCS_H__DC47117F_2750_4C69_A954_184DB6487700__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
#include  
#include  
 
#define SAFE_DELETE(p)       { if(p) { delete (p);     (p)=NULL; } } 
#define SAFE_DELETE_ARRAY(p) { if(p) { delete[] (p);   (p)=NULL; } } 
#define SAFE_RELEASE(p)      { if(p) { (p)->Release(); (p)=NULL; } } 
#define SAFE_UNACQUIRE(p)    { if(p) { (p)->Unacquire();         } } 
 
#define PI 3.14159 
#define TORADIANS(p) ((p)/180.0*PI) 
 
// Helper function to stuff a FLOAT into a DWORD argument 
inline DWORD FtoDW( FLOAT f ) { return *((DWORD*)&f); } 
 
// stuffs a file into a string 
extern bool LoadFileIntoString(const char *strFilename, std::string &str); 
 
// centers a window on the screen 
extern void CenterWindow(HWND hwnd);  
 
// gets the last error and converts it to a string. 
extern void ConvertLastErrorToString(LPSTR szDest, int nMaxStrLen); 
 
// returns true if the given number is a power of 2. 
extern bool IsPowerOf2(int n); 
 
// returns the lowest power of two >= the given number. 
extern int GetLowestPowerOf2(int n); 
 
// given a field delimiter, takes the first field off string and puts it in dest 
extern void PluckFirstField(char *str, char *dest, int maxlen, const char *delim); 
 
 
// returns a random number between min and max             
int RandomNumber(int iMin, int iMax); 
float RandomNumber(float fMin, float fMax); 
 
inline void MakeUpperCase(std::string &str) { 
  for (std::string::iterator i = str.begin(); i != str.end(); i++) { 
    *i = toupper(*i); 
  } 
} 
 
inline std::string RemoveQuotes(std::string &str) { 
  for (std::string::iterator i = str.begin(); i != str.end(); i++) { 
    if (*i == '\"') { 
      i = str.erase(i); if (i == str.end()) break; 
    } 
  } 
  return(str); 
} 
 
 
inline float Noise2D(int x, int y) 
{ 
  int n = x + y * 57; 
  n = (n<<13) ^ n; 
  return ( 1.0f - ( (n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0f);     
} 
  
inline float Noise3D(int x, int y, int z) 
{ 
  int n = x + y * 57 + z * 131; 
  n = (n<<13) ^ n; 
  return ( 1.0f - ( (n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff)  
	* 0.000000000931322574615478515625f);     
} 
 
#endif // !defined(AFX_COMMONFUNCS_H__DC47117F_2750_4C69_A954_184DB6487700__INCLUDED_)