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发表于 2005-3-11 10:55:00
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//Entities.cpp
//AutoCAD数据库初级操作实例——创建实钵、层、新组词典等，
//在AutoCAD命令行中运行MakeNewEnts即可
//包含头文件
#include
#include
#include
#include
#include
#include
//函数声明
AcDbObjectId createNewLine();
AcDbObjectId createNewCircle();
AcDbObjectId createNewLayer();
void createNewGroup();
Acad::ErrorStatus changeColor(AcDbObjectId,Adesk::UInt16);
//创建直线对象，并返回对象ID
AcDbObjectId CreateNewLine()
{
//定义直线的起点、终点
AcGePoint3d startPoint(5.0,4.0,0.0);
AcGePoint3d endPoint(15.0,10.0,0.0);
//初始化直线对象实例
AcDbLine* pLine=new AcDbLine(startPoint,endPoint);
//打开块表
AcDbBlockTable *pBlockTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pBlockTable,AcDb::kForRead);
//打开模型空间块表段，获得当前块表记录，并关闭块表
AcDbBlockTableRecord *pBlockTableRecord;
pBlockTable->getAt(ACDB_MODEL_SPACE,pBlockTableRecord,AcDb::kForWrite);
pBlockTable->close();
//向当前块表记录中添加直线对象
AcDbObjectId lineId;
pBlockTableRecord->appendAcDbEntity(lineId,pLine);
//关闭块表记录及直线对象
pBlockTableRecord->close();
pLine->close();
//返回直线对象ID
return lineId;
}
//创建圆对象，并返回对象ID
AcDbObjectId CreateNewCircle()
{
//定义圆心、法向向量
AcGePoint3d center(10.0,7.0,0.0);
AcGeVector3d normal(0.0,0.0,1.0);
//初始化圆对象实例
AcDbCircle *pCirc=new AcDbCircle(center,normal,4.5);
//打开块表
AcDbBlockTable *pBlockTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pBlockTable,AcDb::kForRead);
//打开模型空间块表，获得当前块表记录，并关闭块表
AcDbBlockTableRecord *pBlockTableRecord;
pBlockTable->getAt(ACDB_MODEL_SPACE,pBlockTableRecord,AcDb::kForWrite);
pBlockTable->close();
//向当前块表记录中添加圆对象
AcDbObjectId CircleId;
pBlockTableRecord->appendAcDbEntity(CircleId,pCirc);
//关闭块表记录及圆对象
pBlockTableRecord->close();
pCirc->close();
//返回圆对象ID
return CircleId;
}
//建立名为“MYNewLayer”的新层
AcDbObjectId createNewLayer()
{
//打开层表，打开方式为只写
AcDbLayerTable *pLayerTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pLayerTable,AcDb::kForWrite);
//初始化层表记录对象，并设定层表记录的名称“MYNewLayer”
AcDbLayerTableRecord *pLayerTableRecord=new AcDbLayerTableRecord;
//层的其它属性(例如颜色、线形等)都用缺省但，
//如：颜色为white、线形为Continuous等
//将新建的层表记录添加到层表中，并将层表记录的ID
//保存到PLayerId作为函数的返回值
AcDbObjectId pLayerId;
pLayerTable->add(pLayerId,pLayerTableRecord);
//关闭层表和层表记录对象
pLayerTable->close();
pLayerTableRecord->close();
return pLayerId;
}
//建立新组词典条目，利用第三个参数可以改变组的层属性
void createNewGroup(AcDbObjectIdArray& objIds,char* pGroupName,AcDbObjectId pLayerId)
{
//初始化组对象实例，以参数pGroupName为组名
AcDbGroup *pGroup= new AcDbGroup(pGroupName);
//向组对象中加入实体
for(int i=0;iappend(objIds[i]);
//打开组词典(存放于对象词典中)
AcDbDictionary* pGroupDict;
acdbHostApplicationServices()->workingDatabase()->getGroupDictionary(pGroupDict,AcDb::kForWrite);
//将新建的组词典条的R入到组词典中
AcDbObjectId pGroupId;
pGroupDict->setAt(pGroupName,pGroup,pGroupId);
//将组pGroup的层属性修改为PLayerld所代表的层
pGroup->setLayer(pLayerId);
//关闭组词典和组词典对象
pGroupDict->close();
pGroup->close();
}
//修改实体对象颜色，并返回一个状态码
Acad::ErrorStatus
changeColor(AcDbObjectId endId,Adesk::UInt16 newColor)
{
//定义一个实体对象，并利用参数endId打开这个实体对象
AcDbEntity *pEntity;
acdbOpenObject(pEntity,endId,AcDb::kForWrite);
//修改实体对象的颜色
pEntity->setColorIndex(newColor);
//关闭实体对象
pEntity->close();
//返回Acad::eOK，对于有容错处理的程序，可能在函数当中就返回另外的状态码
return Acad::eOk;
}
//命令MakeNewEnts的执行函数
void runIt()
{
//创建新层
AcDbObjectId newLayerId=createNewLayer();
//定义一个对象Id序列idArray
AcDbObjectIdArray idArray;
//创建一条直线和一个圆
//将新建的直线、圆对象加入idArray中
idArray.append(createNewLine());
idArray.append(createNewCircle());
//由于新建的两个对象均在0层，他们的缺省颜色为ByLayer
//将直线对象的颜色该为红色(1)
//将圆对象的颜色该为绿色(3)
changeColor(idArray.first(),1);
changeColor(idArray.last(),3);
//将直线和圆对象放到组“MyNewGroup”中，
//并将组的层属性改为“MyewGroup”层，
//组中的两个实体对象的层属性也相应的改为“MyNewGroup”层
//创建新层的函数也可以写成带名称参数
createNewGroup(idArray,"MyNewGroup",newLayerId);
}
//初始化函数
void initApp()
{
acedRegCmds->addCommand("ASDK_MAKE_ENTITIES",
"ASDK_MakeNewEnts","MakeNewEnts",ACRX_CMD_MODAL,runIt);
}
//卸载函数
void unloadApp()
{
acedRegCmds->removeGroup("ASDK_MAKE_ENTITIES");
}
//应用程序主函数
extern "C" AcRx::AppRetCode
acrxEntryPoint(AcRx::AppMsgCode msg, void* appId)
{
switch (msg)
{
case AcRx::kInitAppMsg:
acrxDynamicLinker->unlockApplication(appId);
acrxDynamicLinker->registerAppMDIAware(appId);
//调用initApp()函数
initApp();
break;
case AcRx::kUnloadAppMsg:
//调用unloadApp()函数
unloadApp();
break;
}
return AcRx::kRetOK;
} |
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