//----------------------
#include <windows.h>
#include <tchar.h>
#include <cmath>
#include <math.h>
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
TCHAR WinName[] = _T("MainFrame");
//---------------------
int APIENTRY WinMain(HINSTANCE This, HINSTANCE Prev, LPSTR cmd, int mode)
{
    HWND hWnd;
    MSG msg;
    WNDCLASS wc;
    wc.hInstance = This;
    wc.lpszClassName = WinName;
    wc.lpfnWndProc = WndProc;
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor = LoadCursor (NULL, IDC_ARROW);
    wc.lpszMenuName = NULL;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    if (!RegisterClass(&wc)) return 0;
    hWnd = CreateWindow(WinName, _T("Каркас Windows-приложения"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, HWND_DESKTOP,
    NULL,
    This,
    NULL);
    ShowWindow(hWnd, mode);
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);

    }
    return 0;
}



LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT ps;
    const int WIDTH = 400;
    const int HEIGHT = 300;
    float v11, v12, v13, v21, v22, v23, v31, v32, v33, v43;
    float rho = 300.,thetta = 75., phi = 30., ScreenDist = 500.;
    float A, B, C, D, An, Bn, Cn;
    float xt[3], yt[3], zt[3];
    float Al, Bl, Cl;
    float alpha;
    float th, ph, costh, cosph, sinth, sinph;
    float factor = atan(1.0)/45.;
    static HBRUSH hBrush;
    class TFPoint {
    public:
        float X;
        float Y;
        float Z;
    };

    TFPoint CubePoints[]= {
        {-50, -50, -50}
        {50, -50, -50}
        {50, 50, -50}
        {-50, 50, -50}
        {-50, 50, 50}
        {-50, -50, 50}
        {50, -50, 50}
        {50, 50, 50}
    };
    int Gran [6][4]= {
        {0,3,4,5}
        {0,5,6,1}
        {2,7,4,3}
        {7,6,5,4}
        {0,1,2,3}
        {2,1,6,7}
    };

    void VidMatCoeff (float rho,float thetta, float phi);
    {
        th = thetta * factor;
        ph = phi * factor;
        costh = cos(th);
        sinth = sin(th);
        cosph = cos (ph);
        sinph = sin (ph);
        v11 = -sinth; v12 = -cosph * costh; v13 = -sinph * costh;
        v21 = costh; v22 = -cosph * sinth; v23 = -sinph * sinth;
        v31 = 0; v32 = sinph; v33 = -cosph;
        v43 = rho;
    }
    POINT Perspective (float x, float y, float z) {
        POINT point;
        float xe, ye, ze;
        VidMatCoeff (rho, thetta, phi);
        xe = v11 * x + v21 * y;