5sPP3Task4

#include <stdio.h>
#include <stdlib.h>

#define _WIN32_WINNT 0X0A00

#include <windows.h>
#include <time.h>

void WinShow(HDC dc)
{
    double x = 0.1, y = 0.1, xn, yn;
    for (int i = 0; i < 10000; i++)
    {
        int t = rand() % 100;
        if (t < 21)
        {
            xn = 0.088 * x + 0.521 * y + 0.785;
            yn = -0.464 * x - 0.378 * y + 8.096;
        }
        else
        {
            xn = 0.824 * x + 0.281 * y - 1.882;
            yn = -0.212 * x + 0.864 * y - 0.111;
        }
        x = xn; y = yn;
        int a = (int)(400 + x * 30);
        int b = (int)(400 - y * 30);
        SetPixel(dc, a, b, RGB(140, 140, 255));
    }
}


LRESULT WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
{
    if (message == WM_DESTROY)
        PostQuitMessage(0);
    else return DefWindowProcA(hwnd, message, wparam, lparam);
}
int main()
{
    srand(time(NULL));
    WNDCLASSA wcl;
    memset(&wcl, 0, sizeof(WNDCLASSA));
    wcl.lpszClassName = "my_Window";
    wcl.lpfnWndProc = WndProc;
    RegisterClassA(&wcl);
    HWND hwnd;
    hwnd = CreateWindow(L"my_Window", L"        ", WS_OVERLAPPEDWINDOW, 10, 10, 800, 600, NULL, NULL, NULL, NULL);
    HDC dc = GetDC(hwnd);
    ShowWindow(hwnd, SW_SHOWNORMAL);
    MSG msg;

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
        WinShow(dc);
    }
    return 0;
}