// minoglView.cpp : implementation of the CMinoglView class
//

#include "stdafx.h"
#include "minogl.h"

#include "minoglDoc.h"
#include "minoglView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMinoglView

IMPLEMENT_DYNCREATE(CMinoglView, CView)

BEGIN_MESSAGE_MAP(CMinoglView, CView)
        //{{AFX_MSG_MAP(CMinoglView)
        ON_WM_CREATE()
        ON_WM_DESTROY()
        //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMinoglView construction/destruction

CMinoglView::CMinoglView()
{
        // TODO: add construction code here

}

CMinoglView::~CMinoglView()
{
}

BOOL CMinoglView::PreCreateWindow(CREATESTRUCT& cs)
{
        // TODO: Modify the Window class or styles here by modifying
        //  the CREATESTRUCT cs

        return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMinoglView drawing

void CMinoglView::OnDraw(CDC* pDC)
{
        CMinoglDoc* pDoc = GetDocument();
        ASSERT_VALID(pDoc);
        // TODO: add draw code for native data here
        wglMakeCurrent(pDC->m_hDC, m_hRC);
        DrawWithOpenGL();     // Helper function does all drawing
        wglMakeCurrent(pDC->m_hDC, NULL);
}

/////////////////////////////////////////////////////////////////////////////
// CMinoglView diagnostics

#ifdef _DEBUG
void CMinoglView::AssertValid() const
{
        CView::AssertValid();
}

void CMinoglView::Dump(CDumpContext& dc) const
{
        CView::Dump(dc);
}

CMinoglDoc* CMinoglView::GetDocument() // non-debug version is inline
{
        ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMinoglDoc)));
        return (CMinoglDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMinoglView message handlers

int CMinoglView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
        if (CView::OnCreate(lpCreateStruct) == -1)
                return -1;
        
        // TODO: Add your specialized creation code here
        PIXELFORMATDESCRIPTOR pfd =
        {
                sizeof(PIXELFORMATDESCRIPTOR),
                1,
                PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL,
                PFD_TYPE_RGBA,
                24,0,0,0,0,0,0,    // 24 color bits
                0,0,0,0,0,0,0,
                32,0,0,0,0,0,0,0   // 32 bit deep Z-buffer
        };

		CDC* pDC = GetDC();
        int pixelFormat = ChoosePixelFormat(pDC->m_hDC, &pfd);
        SetPixelFormat(pDC->m_hDC, pixelFormat, &pfd);
        m_hRC = wglCreateContext(pDC->m_hDC);

		return 0;
}

void CMinoglView::OnDestroy() 
{
        CView::OnDestroy();
        
        // TODO: Add your message handler code here
        wglDeleteContext(m_hRC);
        
}

// *** Drawing helper function ***
void CMinoglView::DrawWithOpenGL()
{
       float i;
	   glClearColor(1.0f,1.0f,1.0f,1.0f);  // assign white as backgnd color for window
	   glClear(GL_COLOR_BUFFER_BIT);       // make assigned backgnd color be displayed


        // Draw a rectangle in different shades of red
        for (i=0.2f; i<=1.0; i+=0.2f)
        {
                glColor3f(i, 0.0, 0.0);  // drawing color
                glBegin(GL_POLYGON);     // define the rectangle
                        glVertex2f(-0.5,-0.5);
                        glVertex2f(-0.5,0.5);
                        glVertex2f(0.5,0.5);
                        glVertex2f(0.5,-0.5);
                glEnd();
                glFlush();   // force execution
                Sleep(1000); // wait a while
        }

}