createtriangleview.cpp

三角网的计算与绘制

// CreateTriangleView.cpp : implementation of the CCreateTriangleView class
//

#include "stdafx.h"
#include "CreateTriangle.h"

#include "CreateTriangleDoc.h"
#include "CreateTriangleView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CCreateTriangleView

IMPLEMENT_DYNCREATE(CCreateTriangleView, CView)

BEGIN_MESSAGE_MAP(CCreateTriangleView, CView)
	// 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()

// CCreateTriangleView construction/destruction

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

}

CCreateTriangleView::~CCreateTriangleView()
{
}

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

	return CView::PreCreateWindow(cs);
}

// CCreateTriangleView drawing

void CCreateTriangleView::OnDraw(CDC* pDC)
{
	CCreateTriangleDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if (!pDoc)
		return;

	CTriangleCreator* pTriangleCreator=pDoc->GetTriangleCreator();
	int count=pTriangleCreator->GetTriangleCount();
	CTriangle* pTriangleArray=pTriangleCreator->GetTriangleArray();
	WPOINT* pPointArray=pTriangleCreator->GetPointArray();

	for(int i=0;i<count;i++)
	{
		int index[3];
		pTriangleArray[i].GetPointIndex(index);

		pDC->MoveTo(pPointArray[index[0]].x,pPointArray[index[0]].y);
		pDC->LineTo(pPointArray[index[1]].x,pPointArray[index[1]].y);
		pDC->LineTo(pPointArray[index[2]].x,pPointArray[index[2]].y);
		pDC->LineTo(pPointArray[index[0]].x,pPointArray[index[0]].y);
	}
}


// CCreateTriangleView printing

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

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

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


// CCreateTriangleView diagnostics

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

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

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


// CCreateTriangleView message handlers