test8view.cpp

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// test8View.cpp : implementation of the CTest8View class
//

#include "stdafx.h"
#include "test8.h"

#include "test8Doc.h"
#include "test8View.h"

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

/////////////////////////////////////////////////////////////////////////////
// CTest8View

IMPLEMENT_DYNCREATE(CTest8View, CView)

BEGIN_MESSAGE_MAP(CTest8View, CView)
	//{{AFX_MSG_MAP(CTest8View)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTest8View construction/destruction

CTest8View::CTest8View()
{
	// TODO: add construction code here

}

CTest8View::~CTest8View()
{
}

BOOL CTest8View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CTest8View drawing

void CTest8View::OnDraw(CDC* pDC)
{
	CTest8Doc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
    int x0,y0;
	int x1,y1;
	x0=10;
	y0=10;
	x1=455;
	y1=400;

	CPen MyPen,*OldPen; 
	MyPen.CreatePen(PS_SOLID,1,RGB(0,255,0)); 
	OldPen=pDC->SelectObject(&MyPen);
	pDC->MoveTo(x0,y0);
	pDC->LineTo(x1,y1);
	pDC->SelectObject(OldPen);//加色
	MyPen.DeleteObject();
	
	pDC->SetTextColor(RGB(255,0,0));
	pDC->TextOut(10,10,"Bresenham Line");
///////////////////////////////////////////////////////
	int x,y;
	x=x0+128;
	y=y0;//起点

	int x2,y2;
	x2=x1+128;
	y2=y1;//终点

	
	
	float d=0;
	float k,b;
	k=(float)(y2-y)/(float)(x2-x);
	b=(float)y-k*(float)x;

	COLORREF rgb1, rgb2;
	while(x<=x2)
	{
		rgb1=RGB(d*255,d*255,d*255);
		rgb2=RGB((1-d)*255,(1-d)*255,(1-d)*255);
		pDC->SetPixel(x,y,rgb1);
		pDC->SetPixel(x,y+1,rgb2);

		d=d+k;
		if(d>1.0)
		{
			x+=1;
			y+=1;
			d=d-1.0;
		}
		else 
			x+=1;
	}
	pDC->SetTextColor(RGB(255,0,0));
	pDC->TextOut(10+128,10,"距离反走样直线");
}

/////////////////////////////////////////////////////////////////////////////
// CTest8View printing

BOOL CTest8View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CTest8View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CTest8View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CTest8View diagnostics

#ifdef _DEBUG
void CTest8View::AssertValid() const
{
	CView::AssertValid();
}

void CTest8View::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CTest8Doc* CTest8View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CTest8Doc)));
	return (CTest8Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CTest8View message handlers