CAD开发小结1

1.
acutPrintf(_T("\nHello World!"));在命令行中输出Hello
World!

一般使用acedGetXXX();来获得一个用户输入的值。

int nCountNode = 3;

int nReturn;

nReturn = acedGetInt(_T("请输入一个整数然后回车："),&nCountNode);

if(nReturn == RTNORM)

{

    CString str;

    str.Format(_T("%d"),nCountNode);

    AfxMessageBox(_T("你输入了：") + str);

}
  

2. 向模型空间添加文字：



 CreateEnt.h 头文件中
#pragma once

class CCreateEnt:public AcDb

{

public:

 CCreateEnt();

 //单行文字

 static AcDbObjectId CreateText(const AcGePoint3d& ptInsert, const ACHAR* text   //ptInsert为文字的3维空间坐标点  text为显示的文本内容

  , AcDbObjectId style = AcDbObjectId::kNull, double height = 2.5, double rotation = 0);

 //多行文字

 static AcDbObjectId CreateMText(const AcGePoint3d& ptInsert, const ACHAR* text

  , AcDbObjectId style = AcDbObjectId::kNull, double height = 2.5, double width = 10);

 ~CCreateEnt();

 static AcDbObjectId PostToModelSpace(AcDbEntity *pEnt);  //投影至模型空间

};

CreateEnt.cpp

AcDbObjectId CCreateEnt::PostToModelSpace(AcDbEntity *pEnt)

{

 AcDbBlockTable *pBlockTable;

 acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable, AcDb::kForRead); //获取可读的块表对象

 AcDbBlockTableRecord *pBlockTableRecord;

 pBlockTable->getAt(ACDB_MODEL_SPACE, pBlockTableRecord, AcDb::kForWrite);  //获取模型空间中可写的块表记录

 AcDbObjectId entId;

 Acad::ErrorStatus es = pBlockTableRecord->appendAcDbEntity(entId, pEnt);  //将AcDb对象加入该块表记录中。并可显示出来

 pBlockTable->close();

 pBlockTableRecord->close();

 pEnt->close();

 return entId;

}

 

AcDbObjectId CCreateEnt::CreateText(const AcGePoint3d& ptInsert, const ACHAR* text

 , AcDbObjectId style, double height, double rotation)

{

 AcDbText *pText = new AcDbText(ptInsert, text, style, height, rotation);

 return PostToModelSpace(pText);

}

//多行文字

AcDbObjectId CCreateEnt::CreateMText(const AcGePoint3d& ptInsert, const ACHAR* text

 , AcDbObjectId style, double height, double width)

{

 AcDbMText *pMText = new AcDbMText();

 //设置多行文字的特性

 pMText->setTextStyle(style);

 pMText->setContents(text);

 pMText->setLocation(ptInsert);

 pMText->setTextHeight(height);

 pMText->setWidth(width);

 pMText->setAttachment(AcDbMText::kBottomLeft);

 return PostToModelSpace(pMText);

}

 
调用文件AcrxEntryPoint.cpp中
class CZrxTemplate1App::XXXXX
{
public:

 static void Demo_Test3(); //具体命令行函数,此处声明

private:

};

void CZrxTemplate1App::Demo_Test3() //具体命令行函数

{

 //创建单行文字

 AcGePoint3d ptInsert(0, 4, 0);

 CCreateEnt::CreateText(ptInsert, _T("abck中文"));

 //创建多行文字

 ptInsert.set(0, 0, 0);

 CCreateEnt::CreateMText(ptInsert, _T("http://www.weiqi9d.com"));

}

//-----------------------------------------------------------------------------

IMPLEMENT_ARX_ENTRYPOINT(CZrxTemplate1App)

ACED_ARXCOMMAND_ENTRY_AUTO(CZrxTemplate1App, Demo, _Test3, Test3, ACRX_CMD_MODAL, NULL)  //在此处注册命令

 
3. 
//创建直线
AcDbObjectId CCreateEnt::CreateLine(AcGePoint3d ptStart,AcGePoint3d ptEnd)

{

    AcDbLine *pLine = new AcDbLine(ptStart,ptEnd);

    //将实体添加到图形数据库
    AcDbObjectId lineId;

    lineId = PostToModelSpace(pLine);

    return lineId;

}

//创建圆
AcDbObjectId CCreateEnt::CreateCircle(AcGePoint3d ptCenter,AcGeVector3d vec,double radius)

{

    AcDbCircle *pCircle = new AcDbCircle(ptCenter,vec,radius);

    //将实体添加到图形数据库
    AcDbObjectId circleId;

    circleId = PostToModelSpace(pCircle);

    return circleId;

}
 
4. 修改类modifyEnt
头文件中：
#pragma once

#include "StdAfx.h"
class CModifyEnt

{
public:

    CModifyEnt(void);

    ~CModifyEnt(void);

    static Acad::ErrorStatus ChangeColor(AcDbObjectId entId,Adesk::UInt16 colorIndex);

    static Acad::ErrorStatus ChangeLayer(AcDbObjectId entId,CString strLayerName);

};

.cpp文件：
#include "StdAfx.h"

#include "ModifyEnt.h"
//修改实体颜色
//在CCreateEnt中定义的图形，在CModifyEnt类中只能通过AcDbObjectId来识别并修改
Acad::ErrorStatus CModifyEnt::ChangeColor(AcDbObjectId entId,Adesk::UInt16 colorIndex) 
{

    AcDbEntity *pEntity;

    //打开图形数据库中的可写对象
    acdbOpenObject(pEntity,entId,AcDb::kForWrite);                 

    //修改实体的颜色
    pEntity->setColorIndex(colorIndex);

    //用完之后，及时关闭
    pEntity->close();

    return Acad::eOk;

}
//改变实体所在层
Acad::ErrorStatus CModifyEnt::ChangeLayer(AcDbObjectId entId,CString strLayerName)

{

    AcDbEntity *pEntity;

    //打开图形数据库中的对象
    acdbOpenObject(pEntity,entId,AcDb::kForWrite);

    //修改实体的图层
    pEntity->setLayer(strLayerName);

    //用完之后，及时关闭
    pEntity->close();

    return Acad::eOk;

}