functiontriangle.cpp

一个简单的画图程序 可以画点线面等

// FunctionTriangle.cpp: implementation of the CFunctionTriangle class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "smallcad203.h"
#include "FunctionTriangle.h"
#include "MainFrm.h" 
#include "SmallCAD203Doc.h"
#include "SmallCAD203View.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
extern CSmallCAD203App theApp;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CFunctionTriangle::CFunctionTriangle()
{
	b=0;
//	point1.x=point2.x=point3.x=3;
	l=NULL;
	mouseD=FALSE;
}

CFunctionTriangle::~CFunctionTriangle()
{

}
void CFunctionTriangle::OnLButtonDown(UINT nFlags, CPoint point)
{
	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();
	mouseD=TRUE;
	CDC *pDC=pView->GetDC();
	b++;
	
	if(b==1)
	{
	
	 l=new CGraphTriangle;
	 l->SetColor(pDoc->GetCurrentColor());
	l->SetScale(pDoc->GetCurrentScale());
	l->SetPoint1(point);
	}
	if(b==2)
	{
		l->SetPoint2(point);
		l->Draw(pDC);
	}
	if(b==3)
	{

		l->SetPoint3(point);
		l->Draw(pDC);
		b=0;
		pDoc->my_list.InSert(l);

	}
	pView->ReleaseDC(pDC);

}
void CFunctionTriangle::OnLButtonUp(UINT nFlags, CPoint point)
{
	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();
	CDC *pDC=pView->GetDC();
	mouseD = FALSE;
	if(b == 2)
		pDoc->AddGraph(l);

}
void CFunctionTriangle::OnMouseMove(UINT nFlags, CPoint point)
{

	CMainFrame *pFrame=(CMainFrame *)theApp.GetMainWnd();
	CSmallCAD203Doc *pDoc=(CSmallCAD203Doc *)pFrame->GetActiveDocument();
	CSmallCAD203View *pView=(CSmallCAD203View *)pFrame->GetActiveView();

	CDC *pDC=pView->GetDC();

	if(!mouseD)
		return;

	pView->ReleaseDC(pDC);

}