polytool.cpp

参数化车间设备资源绘制程序

#include "StdAfx.h"
//#include "polytool.h"
#include ".\polytool.h"

#include "polyobj.h"
#include "visdrawdoc.h"
#include "visdrawview.h"

#define ZERO 10e-6

static CPolyTool polygonToolObj(polygonTool);
static CPolyTool polylineToolObj(polylineTool);

CPolyTool::CPolyTool(void)
{
}

CPolyTool::~CPolyTool(void)
{
}

CPolyTool::CPolyTool(DrawShape drawShape)
	: CDrawTool(drawShape)
{
	pObj = NULL;
}

void CPolyTool::OnLButtonDown(CVisDrawView* pView, UINT nFlags, const CPoint& point)
{	
	CPoint local = point;

	//把设备坐标转化为逻辑坐标
	pView->ClientToDoc(local);

	//如果还没有创建对象
	if (pObj == NULL)
	{
		//创建多边形对象
		pObj = new CPolyObj(CRect(local, CSize(0, 0)));

		switch(m_drawShape)
		{
		default:
			break;
		case polylineTool:		//多边线工具

			//图元为多边线
			pObj->m_nShape=CPolyObj::polylineshape;          
			break;

		case polygonTool:		//多边形工具

			//图元为多边形
			pObj->m_nShape = CPolyObj::polygonshape;
			break;
		}

		//把对象指针添加到文档对象指针链表中去
		pView->GetDocument()->Add(pObj);
	//	pObj->AddPoint(local, pView);
		
		//记录辅助点
		nFirstPoint = point;
	}

	//如果与第一个点重合，该点不作为多边形顶点
	else if ((local.x - pObj->m_floatpoints[0].pointx) < ZERO 
		&& (local.y - pObj->m_floatpoints[0].pointy) < ZERO) return;
	
	//把点添加到多边形顶点数组中去
	pObj->AddPoint(local, pView);

	//记录辅助点
	lastPoint = point;
	prePoint = point;
}

void CPolyTool::OnLButtonUp(CVisDrawView* pView, UINT nFlags, const CPoint& point)
{
}

void CPolyTool::OnMouseMove(CVisDrawView* pView, UINT nFlags, const CPoint& point)
{
	

	CPoint local = point;

	//把设备坐标转化为逻辑坐标
	pView->ClientToDoc(local);

    if(pObj==NULL) return ;	       

	//申请与视图窗口相关的设备描述表
	CDC* dc=pView->GetDC();

	//设置采用屏幕反色绘图模式
  	dc->SetROP2(R2_NOT);

	switch(m_drawShape)
	{
	default:
		break;
	case polylineTool:		//多边线工具			          
		break;

	case polygonTool:		//多边形工具
		//删除第一个顶点到前一个鼠标点之间的直线
		dc->MoveTo(nFirstPoint);
		dc->LineTo(prePoint);

		//画从第一个顶点到当前鼠标点之间的直线
		dc->MoveTo(nFirstPoint);
		dc->LineTo(point);	
		break;
	}
	
	//删除上一个顶点到前一个鼠标点之间的直线
	dc->MoveTo(lastPoint);
	dc->LineTo(prePoint);

	//画一条从上一个顶点到当前鼠标点之间的直线
	dc->MoveTo(lastPoint);
	dc->LineTo(point);	

	//删除设备描述表	
	pView->ReleaseDC(dc);
	
	//记录辅助点
	prePoint=point;	
	
}

void CPolyTool::OnLButtonDblClk(CVisDrawView* pView, UINT nFlags, const CPoint& point)
{
	CPoint local = point;

	//把设备坐标转化为逻辑坐标
	pView->ClientToDoc(local);

	//双击鼠标左键结束一个多边形的绘制
	pObj->AddPoint(local, pView);
	pObj = NULL;

	//刷新视图
	pView->Invalidate(TRUE);
}

void CPolyTool::CreateObj(CVisDrawView* pView, const CPoint& point)
{
	
}