ExampleTimer.cpp

// Timer Example
// Copyright © 2004-2007 Glenn Fiedler
// Part of the PixelToaster Framebuffer Library - http://www.pixeltoaster.com

#include "PixelToaster.h"
#include <stdio.h>

using namespace PixelToaster;

int main()
{
    printf( "\n[ Timer Example ]\n\n" );

    Timer timer;

    printf( "theoretical timer resolution is %f microseconds\n\n", 1e6 * timer.resolution() );
	timer.delta();
    printf( "practical timer resolution is %f microseconds\n\n", 1e6 * timer.delta() );

    printf( "waiting for one second...\n" );

    const double waitStart = timer.time();
    timer.wait( 1.0 );
    const double waitFinish = timer.time();

    printf( "  %g seconds elapsed according to timer\n\n", waitFinish - waitStart );

    printf( "loop time + delta...\n" );
    
    timer.reset();

    for ( int i = 0; i < 5; ++i )
    {
        timer.wait( 0.1f );
        const double time = timer.time();
        const double delta = timer.delta();
        printf( "  time = %.2g, delta = %g\n", time, delta );
    }

    printf( "\nloop delta only...\n" );

    timer.reset();

    for ( int i = 0; i < 5; ++i )
    {
        timer.wait( 0.1f );
        const double delta = timer.delta();
        printf( "  delta = %g\n", delta );
    }

    printf( "\ndone.\n\n" );
}