C++ OpenGL 눈내리기 예제

[codesafer]

//  2015.12.13              CODEINSIDE.codesafer

#include "glue_screen.h"

#ifndef _DEBUG

#pragma comment(linker,     "/SUBSYSTEM:windows /ENTRY:mainCRTStartup")

#endif

#define SCREEN_WIDTH        640

#define SCREEN_HEIGHT       480

typedef struct  SNOW

{

    float       x, y, z;

                SNOW()

    {

        x =  rand() % SCREEN_WIDTH;

        y = -rand() % SCREEN_HEIGHT * 3;

        z =  rand() % 50 + 1;

    }

    void        move()

    {

        x +=  ( rand() % (int)z - (int)z / 2 ) / 20;

        y += z / 50.f;

        if ( y > SCREEN_HEIGHT )

            y = - rand() % SCREEN_HEIGHT * 3;

    }

} SNOW;

SNOW            snow_set[5000];

size_t          snow_count  = sizeof snow_set / sizeof snow_set[0];

void            clear( const COLOR32 color )

{

    for( size_t y = 0; y < screen.get_height(); ++y )

        for( size_t x = 0; x < screen.get_width(); ++x )

            screen.put_pixel( x, y, color );

}

void            scene()

{

    clear( BLACK );

    for( size_t i = 0; i < snow_count; ++i )

    {

        snow_set[i].move();

        i8u snow_intensity = snow_set[ i ].z * 3 + 100;

        screen.put_pixel( snow_set[i].x, snow_set[i].y,

            COLOR32( snow_intensity, snow_intensity, snow_intensity ) );

    }

}

int main()

{

    screen.open();

    screen.on_draw_scene = scene;

    screen.run();

    screen.close();

    return 0;

}

// Fin.

참고하세요 :)

모듈이 조금 세분화 되었습니다.

[codesafer]

i8u snow_intensity = snow_set[ i ].z * 5 + 5; 요렇게 하면 공간감이 좀 더 깊어져유~

[딩동딩]

glue_screen.h는 먼가여

[딩동딩]

아 밑글에 있군요