195 lines
2.6 KiB
C++
195 lines
2.6 KiB
C++
/**Module*Header**\
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* Module Name: util.cxx
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* Misc. utility functions
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* Copyright (c) 1996 Microsoft Corporation
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\**/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <sys/timeb.h>
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#include <GL/gl.h>
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#include <sys/types.h>
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#include <sys/timeb.h>
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#include <time.h>
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#include <math.h>
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#include "ssintrnl.hxx"
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#include "util.hxx"
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/**Public*Routine**\
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* SS_TIME class
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\**/
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void
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SS_TIME::Update()
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{
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struct _timeb time;
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_ftime( &time );
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seconds = time.time + time.millitm/1000.0;
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}
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void
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SS_TIME::Zero()
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{
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seconds = 0.0;
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}
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double
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SS_TIME::Seconds()
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{
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return seconds;
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}
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SS_TIME
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SS_TIME::operator+( SS_TIME addTime )
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{
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return( *this += addTime );
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}
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SS_TIME
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SS_TIME::operator-( SS_TIME subTime )
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{
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return( *this -= subTime );
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}
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SS_TIME
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SS_TIME::operator+=( SS_TIME addTime )
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{
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seconds += addTime.seconds;
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return *this;
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}
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SS_TIME
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SS_TIME::operator-=( SS_TIME subTime )
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{
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seconds -= subTime.seconds;
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return *this;
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}
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/**Public*Routine**\
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* SS_TIMER class
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\**/
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void
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SS_TIMER::Start()
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{
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startTime.Update();
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}
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SS_TIME
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SS_TIMER::Stop()
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{
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elapsed.Update();
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return elapsed - startTime;
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}
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void
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SS_TIMER::Reset()
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{
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elapsed.Zero();
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}
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SS_TIME
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SS_TIMER::ElapsedTime()
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{
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elapsed.Update();
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return elapsed - startTime;
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}
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/**Public*Routine**\
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* ss_Rand
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* Generates integer random number 0..(max-1)
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\**/
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int ss_iRand( int max )
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{
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return (int) ( max * ( ((float)rand()) / ((float)(RAND_MAX+1)) ) );
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}
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/**Public*Routine**\
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* ss_Rand2
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* Generates integer random number min..max
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\**/
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int ss_iRand2( int min, int max )
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{
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if( min == max )
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return min;
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else if( max < min ) {
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int temp = min;
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min = max;
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max = temp;
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}
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return min + (int) ( (max-min+1) * ( ((float)rand()) / ((float)(RAND_MAX+1)) ) );
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}
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/**Public*Routine**\
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* ss_fRand
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* Generates float random number min...max
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\**/
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FLOAT ss_fRand( FLOAT min, FLOAT max )
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{
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FLOAT diff;
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diff = max - min;
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return min + ( diff * ( ((float)rand()) / ((float)(RAND_MAX)) ) );
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}
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/**Public*Routine**\
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* ss_RandInit
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* Initializes the randomizer
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\**/
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void ss_RandInit( void )
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{
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struct _timeb time;
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_ftime( &time );
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srand( time.millitm );
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for( int i = 0; i < 10; i ++ )
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rand();
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}
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#if DBG
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/**Public*Routine**\
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* DbgPrint
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* Formatted string output to the debugger.
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* History:
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* 26-Jan-1996 -by- Gilman Wong [gilmanw]
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* Wrote it.
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\**/
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ULONG DbgPrint(PCH DebugMessage, ...)
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{
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va_list ap;
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char buffer[256];
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va_start(ap, DebugMessage);
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vsprintf(buffer, DebugMessage, ap);
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OutputDebugStringA(buffer);
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va_end(ap);
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return(0);
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}
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#endif |