mfc_graph_advance_2 - 8BitsCoding/RobotMentor GitHub Wiki

이번강좌에서 만들어볼 사항

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// Dlg.h
CImage m_image;
CDC m_image_dc;

CPen m_green_pen;
CBrush m_green_brush;

CRect m_rect;
char m_is_clicked = 0;
CPoint m_start_point;

// OnInitDialog
GetClientRect(m_rect);

m_image.Create(m_rect.Width(), m_rect_Height(), 32);
m_image_dc.Attach(m_image.GetDC());

m_green_pen.CreatePen(PS_SOLID, 1, RGB(100, 255, 100));
m_green_brush.CreateSlidBrush(RGB(0, 160, 0));

SetBackgroundColor(RGB(0, 0, 0));

// OnDestroy
m_image_dc.Detach();
m_image.Release();

m_green_pen.DeleteObject();
m_green_brush.DeleteObject();

// OnPaint
CPaintDC dc(this);

if(IsIconic()) // ...
else {
    m_image.Draw(dc, 0, 0);
}

// LBUTTON_DOWN
m_is_clicked = 1;
m_start_point = point;

// LBUTTON_UP
m_is_clicked = 0;

// MOUSE MOVE
if(m_is_clicked == 1) {
    m_image_dc.FillSolidRect(m_rect, RGB(0, 0, 0));
    m_image_dc.SelectObject(&m_green_pen);
    m_image_dc.MoveTo(m_start_pos);
    m_image_dc.LineTo(point);

    Invalidate(FALSE);
}
else {

}

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화살표 머리를 만들어보자. - 1

// MOUSE MOVE
if(m_is_clicked == 1) {
    m_image_dc.FillSolidRect(m_rect, RGB(0, 0, 0));
    m_image.SelectStockObject(NULL_BRUSH);
    m_image_dc.SelectObject(&m_green_pen);

    m_image_dc.Ellipse(point.x - 50, point.y - 50, point.x + 50, point.y + 50);

    m_image_dc.MoveTo(m_start_pos);
    m_image_dc.LineTo(point);

    Invalidate(FALSE);
}
else {

}

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화살표 머리를 만들어보자. - 2

// MOUSE MOVE
if(m_is_clicked == 1) {
    m_image_dc.FillSolidRect(m_rect, RGB(0, 0, 0));
    m_image.SelectStockObject(NULL_BRUSH);
    m_image_dc.SelectObject(&m_green_pen);

    m_image_dc.Ellipse(point.x - 50, point.y - 50, point.x + 50, point.y + 50);

    m_image_dc.MoveTo(m_start_pos);
    m_image_dc.LineTo(point);

    POINT pos_list[3];
    pos_list[0].x = point.x;
    pos_list[0].y = point.y;

    double radian = atan2(m_start_pos.y - point.y, point.x - m_start_pos.x);

    pos_list[1].x = (int)(cos(radian + 5.0/6.0*PI) * 50) + point.x;
    pos_list[1].y = (int)(sin(radian + 5.0/6.0*PI) * -50 )+ point.y;

    pos_list[2].x = (int)(cos(radian + 7.0/6.0*PI) * 50) + point.x;
    pos_list[2].y = (int)(sin(radian + 7.0/6.0*PI) * -50) + point.y;

    m_image_dc.Ploygon(pos_list, 3);

    Invalidate(FALSE);
}
else {

}

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화살표 머리를 만들어보자. - 3

// MOUSE MOVE
if(m_is_clicked == 1) {
    m_image_dc.FillSolidRect(m_rect, RGB(0, 0, 0));
    //m_image.SelectStockObject(NULL_BRUSH);
    m_image_dc.SelectObject(&m_green_pen);

    //m_image_dc.Ellipse(point.x - 50, point.y - 50, point.x + 50, point.y + 50);

    m_image_dc.MoveTo(m_start_pos);
    m_image_dc.LineTo(point);

    POINT pos_list[3];
    pos_list[0].x = point.x;
    pos_list[0].y = point.y;

    double radian = atan2(m_start_pos.y - point.y, point.x - m_start_pos.x);

    pos_list[1].x = (int)(cos(radian + 5.0/6.0*PI) * 50) + point.x;
    pos_list[1].y = (int)(sin(radian + 5.0/6.0*PI) * -50 )+ point.y;

    pos_list[2].x = (int)(cos(radian + 7.0/6.0*PI) * 50) + point.x;
    pos_list[2].y = (int)(sin(radian + 7.0/6.0*PI) * -50) + point.y;

    m_image_dc.SelectObject(&m_greem_brush);
    m_image_dc.Ploygon(pos_list, 3);

    Invalidate(FALSE);
}
else {

}

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