AutoCAD二次开发基本操作命令

刚接触auto CAD二次开发不久，对这个行业了解还很少，写一些东西，为了记录一下自己的成长历程。刚开始来到公司时，就是要学习AutoCAD ObjectARX这本书，对于一个初学者来说，自己看书还是挺费劲的，所以我就看着书上的代码，在visual studio上敲出来试着运行调试一下。可是我发现，不一定能运行出来，因为每个电脑设置的内部环境不同，所以对于相同的一套代码，不一定能在两台电脑上运行出来，所以需要我们做的是，了解自己用的这个电脑的内部环境，然后将代码改成能适应我们内部环境的代码即可。我刚开始时就会画一些简单的直线、圆、弧线，虽然不是很难，但是画出来之后有一种小小的成就感。我对CAD的这些代码理解的还很浅显，所以我将他记录下来，以便日后更深入理解。如下所列出的几个命令是建立在基类都已经创建好的基础上的，如有错误，欢迎广大读者指正。

“创建一条直线”命令

void  createline（）
{
                AcGePoint3d ptStart(0,0,0);
	AcGePoint3d ptEnd(100,100,0);
	AcDbLine *pLine = new AcDbLine(ptStart,ptEnd);
	CQhDwg::AddEntity(pLine,_T(""));
                
                 //以上代码可画出一条线，以下代码也可，下面的更简单
	 CQhDwg::AddLine(AcGePoint3d(1000,0,0),AcGePoint3d(5000,0,0),_T(""));
}

 “创建多段线”命令

CQhCfg.cpp

AcDbObjectId CQhDwg::AddPoLyLine(const AcGePoint3dArray& aryPts,double dWidth,bool bClose/*=true*/,CString strLayer/*=_T*/,AcDbDatabase* pDb/*=NULL*/)
{
	AcDbPolyline* pLy=new AcDbPolyline;
	for (int i=0;iaddVertexAt(i,CQhDwg::pt3dto2d(aryPts[i]));
		pLy->setWidthsAt(i,dWidth,dWidth);
	}
	pLy->setClosed(bClose);
	pLy->setLayer(strLayer);
	return AddEntity(pLy,strLayer);
}


ZhidanArchCADCommands.cpp
AcGePoint3dArray ary;
	ary.append(AcGePoint3d(200,400,0));
	ary.append(AcGePoint3d(500,300,0));
	ary.append(AcGePoint3d(600,700,0));
	CQhDwg::AddPoLyLine(ary,1);

 “画弧线”命令

AcDbObjectId CQhDwg::AddArc(const AcGePoint3d &ptCenter,double radius,double startAngle,double endAngle,CString strLayer/*=_T*/,AcDbDatabase* pDb/*=NULL*/)
{
	AcGeVector3d vec(0,0,1);
	AcDbArc *pArc = new AcDbArc(ptCenter,vec,radius,startAngle,endAngle);
	return AddEntity(pArc);
}

“画圆”命令

AcDbObjectId  CQhDwg::AddCircle(const AcGePoint3d ¢erPoint,double radius)
{
	AcGeVector3d normal(0,0,1);//确定圆的法向量，也可放到函数变量中；
	AcDbCircle *pCircle = new AcDbCircle(centerPoint,normal,radius);
	return AddEntity(pCircle);
}

 “填充”命令

CQhCfg.cpp

AcDbObjectId CQhDwg::AddHatch(const AcDbObjectIdArray& aryExtIds,CString strHatch,double dSc,CString strLayer/*=_T("")*/,AcDbDatabase* pDb/* =NULL */)
{
	AcDbHatch* pHatch=new AcDbHatch;
	pHatch->setElevation(0);
	pHatch->setPatternAngle(0);
	pHatch->setPatternScale(dSc);
	pHatch->setAssociative(Adesk::kFalse);
	pHatch->setHatchStyle(AcDbHatch::kNormal);
	pHatch->appendLoop(AcDbHatch::kExternal,aryExtIds);
	pHatch->setPattern(AcDbHatch::kPreDefined,strHatch);
	pHatch->evaluateHatch();

	return AddEntity(pHatch,strLayer);
}

ZhidanArchCADCommands.cpp

AcDbObjectIdArray ary1;
                AcDbObjectId id = CQhDwg::AddLine(AcGePoint3d(0,0,0),AcGePoint3d(100,100,0),_T(""));	
                AcDbObjectId id1 = CQhDwg::AddLine(AcGePoint3d(0,0,0),AcGePoint3d(200,0,0),_T(""));
	AcDbObjectId id2 = CQhDwg::AddLine(AcGePoint3d(100,100,0),AcGePoint3d(200,0,0),_T(""));
	ary1.append(id);
	ary1.append(id1);
	ary1.append(id2);
    CQhDwg::AddHatch(ary1,"人工草地",1);

 

 “写文字”命令

AcDbObjectId CQhDwg::AddText(AcGePoint3d pt,const TCHAR* text,TextInfo info,double dAngle,AcDb::TextHorzMode horzmode,AcDb::TextVertMode vertmode,CString strLayer/*=_T("")*/,AcDbDatabase* pDb/* =NULL */)
{
	AcDbText* pText=new AcDbText;
	pText->setLayer(strLayer);
	pText->setTextString(text);
	pText->setHeight(info.dTextHigh);
	pText->setWidthFactor(info.dTextWidthFactor);
	pText->setTextStyle(info.idStyle);
	pText->setRotation(dAngle);
	pText->setHorizontalMode(horzmode);
	pText->setVerticalMode(vertmode);
//	pText->setPosition(pt);
	pText->setAlignmentPoint(pt);

	return AddEntity(pText,strLayer,pDb);
}
ZhidanArchCADCommands.cpp
CQhDwg::AddText(AcGePoint3d(3000,3000,3000),_T("输入你要写的文字"), info,0.5,AcDb::kTextMid,AcDb::kTextVertMid);

“修改线的颜色”命令

void change color()
{
                AcGePoint3d ptStart(0,0,0);
	AcGePoint3d ptEnd(100,100,0);
	AcDbLine *pLine = new AcDbLine(ptStart,ptEnd);
	AcDbObjectId id = CQhDwg::AddEntity(pLine,_T(""));
                CQhDwg::setColor( id, 1);
}

“选择对象”命令

ads_name ssname;
	ads_point pt1,pt2;
	pt1[X] = pt1[Y] = pt1[Z] = 0;
	pt2[X] = pt2[Y] = 100;
	pt2[Z] = 0;
    //选择图形中与pt1和pt2组成的窗口相交的所有对象
	acedSSGet(_T("C"),pt1,pt2,NULL,ssname);
	long length;
	acedSSLength(ssname,&length);
	acutPrintf(_T("\n实体数:%d"));
	acedSSFree(ssname);