开发小记

(基于DWGdirect 1.13.02构建AutoCAD格式文件)

AutoCAD数据库架构： 

ACAD文件建立过程：

1. 创建数据库

OdDbDatabasePtr pDwg = CDwgRW::m_Svcs.createDatabase();

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2. 构建256调色板.

       m_aColor[1]                 = (int)RGB(255,0,0);   m_aColor[2]                 = (int)RGB(255,255,0);

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m_aColor[254]    = (int)RGB(192,192,192);    m_aColor[255]    = (int)RGB(255,255,255);

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3. 构建线型表

创建线形,填充线型表

OdDbLinetypeTablePtr                           pTable;

OdDbLinetypeTableRecordPtr               pEntry;

OdDbObjectId                                         id;

 

pTable = ,_pDwgData->getLinetypeTableId().safeOpenObject(OdDb::kForWrite);

pEntry = OdDbLinetypeTableRecord::createObject();

id = pTable->add(pEntry);

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4. 构建图层(略)

5. 构建文字样式(略)

6. 构建尺寸样式(略)

7. 构建块定义及块中实体

创建块(pEntry为用户自定义块)

OdDbBlockTablePtr             pTable = _pDwgData->getBlockTableId().safeOpenObject(OdDb::kForWrite);

         OdDbBlockTableRecordPtr  pEntry = OdDbBlockTableRecord::createObject();

id = pTable->add(pEntry);

 

往块中加实体

OdDbLinePtr pLine = OdDbLine::createObject();

Id= pEntry ->appendOdDbEntity(pLine);

 

“块引用”于”块定义”的关联

OdDbBlockReferencePtr pBR = OdDbBlockReference::createObject();

pBR->setBlockTableRecord(objID);

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