Консольная графика

#include <windows.h>
#include <cmath>
 
 
float foo ( float x )
{
    return sin ( x ) ;
}
 
int main()
{
    HWND hWnd=GetConsoleWindow();
    HDC hDC=GetDC(hWnd);
 
    RECT rect;
    GetClientRect(hWnd,&rect);
 
    POINT oldPoint ;
    const float d = 0.1 ;
    const float min = -10.0f ;
    const float max = 10.0f ;
    const float multV = 20.0f ;
    const float multH = 10.0f ;
 
    POINT center ;
    center.x = (rect.right-rect.left) / 2 ;
    center.y = (rect.bottom-rect.top) / 2 ;
 
    HDC hBufferDC=CreateCompatibleDC(hDC);
    HBITMAP hBufferBmp=CreateBitmap(rect.right,rect.bottom,1,32,NULL);
    HBITMAP hBufferBmpOld=(HBITMAP)SelectObject(hBufferDC,hBufferBmp);
    FillRect(hBufferDC,&rect,(HBRUSH)GetStockObject(WHITE_BRUSH));    
 
    HPEN hPen = CreatePen ( PS_SOLID , 1 , RGB ( 0 , 0 , 0 ) ) ;
    HPEN hOldPen = (HPEN)SelectObject(hBufferDC,hPen);  
    
    MoveToEx ( hBufferDC , center.x , 0 , &oldPoint ) ;
    LineTo ( hBufferDC , center.x , rect.bottom ) ;
    MoveToEx ( hBufferDC , 0 , center.y , &oldPoint ) ;
    LineTo ( hBufferDC , rect.right , center.y ) ;
 
    hPen = CreatePen ( PS_SOLID , 1 , RGB ( 255 , 0 , 0 ) ) ;
    DeleteObject ( SelectObject(hBufferDC,hPen) ) ;
 
    MoveToEx ( hBufferDC , multH * min + center.x , -multV * foo(min) + center.y , &oldPoint ) ;
    for ( float x = min+d ; x < max ; x+=d ) {
        float y = foo ( x ) ;
        LineTo ( hBufferDC , multH * x + center.x , -multV * y + center.y ) ;
    }
 
    BitBlt(hDC,0,0,rect.right,rect.bottom,hBufferDC,0,0,SRCCOPY);
    DeleteObject ( SelectObject(hBufferDC,hOldPen) ) ;
    SelectObject(hBufferDC,hBufferBmpOld);
    DeleteObject(hBufferBmp);
    DeleteDC(hBufferDC);
    ReleaseDC(hWnd,hDC);
}