动态绘画“耐克”标志

《MFC windows程序设计》里有一个NIKE的玩意，它是通过固定坐标来画的，有点不爽，看我的。

再来一个？

原理非常简单，采用贝寒尔曲线来画，下面是代码，仅供参照！！
头文件：

#ifndef NIKEDEMO_H
#define NIKEDEMO_H
class CMyApp : public CWinApp {
    virtual BOOL InitInstance();
};
class CMainWindow : public CFrameWnd {
public:
    CMainWindow();
protected:
    int cxClient, cyClient, Flags;
    CPoint pt1[4], pt2[4];
    void DrawNike(POINT*);
    afx_msg void OnSize(UINT, int, int);
    afx_msg void OnPaint();
    afx_msg void OnMouseMove(UINT, CPoint);
    afx_msg void OnMButtonDown(UINT, CPoint);
    DECLARE_MESSAGE_MAP()
};
#endif

实现文件：

#include <afxwin.h>
#include "nikeDemo.h"

CMyApp myApp;

BOOL CMyApp::InitInstance() {
    m_pMainWnd = new CMainWindow;
    m_pMainWnd->ShowWindow(m_nCmdShow);
    m_pMainWnd->UpdateWindow();
    return TRUE;
}

BEGIN_MESSAGE_MAP(CMainWindow, CFrameWnd)
    ON_WM_SIZE()
    ON_WM_PAINT()
    ON_WM_MOUSEMOVE()
    ON_WM_MBUTTONDOWN()
END_MESSAGE_MAP()

CMainWindow::CMainWindow() {
    Create(NULL, _T("耐咳？？嗯嗯！！"));
}
void CMainWindow::DrawNike(POINT* pt) {
    static CClientDC dc(this);

    dc.SetROP2(R2_NOT);
    dc.PolyBezier(pt, 4);
    // dc.MoveTo(pt[0]);

    // dc.LineTo(pt[1]);

    // dc.MoveTo(pt[2]);

    // dc.LineTo(pt[3]);

}
void CMainWindow::OnSize(UINT uType, int cx, int cy) {
    cxClient = cx;
    cyClient = cy;
    Flags = 1;

    pt1[0].x = cxClient / 3;
    pt1[0].y = cyClient / 2;
    pt1[1].x = 0;
    pt1[1].y = 0;
    pt1[2].x = 0;
    pt1[2].y = 0;
    pt1[3].x = 3 * cxClient / 4;
    pt1[3].y = cyClient / 4;

    pt2[0].x = cxClient / 3;
    pt2[0].y = cyClient / 2;
    pt2[1].x = cxClient;
    pt2[1].y = cyClient;
    pt2[2].x = cxClient;
    pt2[2].y = cyClient;
    pt2[3].x = 3 * cxClient / 4;
    pt2[3].y = cyClient / 4;
}
void CMainWindow::OnMButtonDown(UINT flags, CPoint point) {
    Flags = -Flags;
}
void CMainWindow::OnMouseMove(UINT flags, CPoint point) {
    if(Flags == 1) {
        if(flags & MK_LBUTTON) {
            DrawNike(pt1);
            pt1[1] = point;
            DrawNike(pt1);
        }
        if(flags & MK_RBUTTON) {
            DrawNike(pt1);
            pt1[2] = point;
            DrawNike(pt1);
        }
    }

    if(Flags == -1) {
        if(flags & MK_LBUTTON) {
            DrawNike(pt2);
            pt2[1] = point;
            DrawNike(pt2);
        }
        if(flags & MK_RBUTTON) {
            DrawNike(pt2);
            pt2[2] = point;
            DrawNike(pt2);
        }
    }
}
void CMainWindow::OnPaint() {
    CPaintDC dc(this);
    dc.PolyBezier(pt1, 4);
    dc.PolyBezier(pt2, 4);

}