Computer Panoráma/computer_panorama_1997-12-hibas.iso/SHARE/GRAPH/PTC051.ZIP/EXAMPLES/RAND32.CPP

C/C++ Source or Header | 1997-09-23 | 2KB | 71 lines

////////////////////////////////////
// random 32bit ARGB8888 putpixel //
////////////////////////////////////

#include "ptc.h"
#include <conio.h>
#include <iostream.h>
#include <stdlib.h>







int main(int argc,char *argv[])
{
    // try to init ptc from command line (ie. "rand32 640 480 ARGB8888")
    PTC ptc(argc,argv);
    if (!ptc.ok())
    {
        // command line init failed - fall back to 320x200 fuzzy 32bit modeset (FUZZY32 is implied)
        if (!ptc.Init(320,200))
        {
            ptc.Close();
            cout << "could not initialize ptc\n";
            return 1;
        }
    }

    // get display resolution
    int xres=ptc.GetXResolution();
    int yres=ptc.GetYResolution();

    // create fullscreen 32bit ARGB8888 surface
    Surface surface(ptc,xres,yres,ARGB8888);

    // main loop
    while (!ptc.kbhit())
    {
        // lock surface
        uint* buffer=(uint*)surface.Lock();
        if (!buffer)
        {
            ptc.Close();
            cout << "null surface lock!\n";
            return 1;
        }

        // plot 100 random pixels
        for (int i=0; i<100; i++)
        {
            int x=random(xres);
            int y=random(yres);
            buffer[xres*y+x]=RGB32(random(255),random(255),random(255));
        }

        // unlock surface
        surface.Unlock();

        // update to display
        if (!surface.Update())
        {
            ptc.Close();
            cout << "update failed\n";
            return 1;
        }
    }
    return 0;
}