在ARX中如何定义一个复杂块,望高手指点

sophie_wzh 发表于 2004-5-20 08:01:00

在ARX中如何定义一个复杂块,然后插入模型空间中?.望高手指点, qq 172675612

tchg 发表于 2004-5-21 20:36:00

Acad::ErrorStatus createBlockRecord (const char *name) { // First, check if a block of the same name already exists // by verifying in the current database block table. AcDbBlockTable *pBlockTable ; // Open the block table for read Acad::ErrorStatus es ; if ( (es =acdbHostApplicationServices ()->workingDatabase ()->getBlockTable (pBlockTable, AcDb::kForRead)) != Acad::eOk ) return (es) ;

if ( pBlockTable->has (name) == Adesk::kTrue ) { pBlockTable->close () ; return (Acad::eDuplicateKey) ; } // Now we know the block does not exist, so we create it // using the name passed in. AcDbBlockTableRecord *pBlockTableRecord =new AcDbBlockTableRecord ; pBlockTableRecord->setName (name) ; // To keep it simple, we use the origin for the insertion point pBlockTableRecord->setOrigin (AcGePoint3d::kOrigin) ; // Open the block table for write // since we are adding a new block definition if ( (es =pBlockTable->upgradeOpen ()) != Acad::eOk ) { delete pBlockTableRecord ; pBlockTable->close () ; return (es) ; } // Add the new block table record to the block table. // For now, the block table record is empty. if ( (es =pBlockTable->add (pBlockTableRecord)) != Acad::eOk ) { // The block table record has not been added // to the block table, so we have to delete it. pBlockTable->close(); delete pBlockTableRecord; return (es) ; } pBlockTable->close () ; // Now the block table record is in the database, but is empty // (has no sub-entity). // Note that after having been added to the database, an object or an entity // is implicitely opened for write. // // So we create the sub entities to append to the block // which will represent a "happy face": // the block should consist of a round yellow face (circle) // two blue eyes (circles) and a red mouth (arc) AcDbCircle *pFace =new AcDbCircle (AcGePoint3d::kOrigin, AcGeVector3d::kZAxis, 1.0) ; AcDbCircle *pLeftEye =new AcDbCircle (AcGePoint3d (0.33, 0.25, 0.0), AcGeVector3d::kZAxis, 0.1) ; AcDbCircle *pRightEye =new AcDbCircle (AcGePoint3d (-0.33, 0.25, 0.0), AcGeVector3d::kZAxis, 0.1) ; AcDbArc *pMouth =new AcDbArc (AcGePoint3d (0, 0.5, 0), 1.0, 3.141592 + (3.141592 * 0.3), 3.141592 + (3.141592 * 0.7)) ; // Set the color property. pFace->setColorIndex (2) ; pLeftEye->setColorIndex (5) ; pRightEye->setColorIndex (5) ; pMouth->setColorIndex (1) ; // add the entities to the new block table record if ( (es =pBlockTableRecord->appendAcDbEntity (pFace)) != Acad::eOk ) { delete pFace ; delete pLeftEye ; delete pRightEye ; delete pMouth ; pBlockTableRecord->erase () ; pBlockTableRecord->close () ; return (es) ; } pFace->close () ;

if ( (es =pBlockTableRecord->appendAcDbEntity (pLeftEye)) != Acad::eOk ) { delete pLeftEye ; delete pRightEye ; delete pMouth ; pBlockTableRecord->erase () ; pBlockTableRecord->close () ; return (es) ; } pLeftEye->close () ;

if ( (es =pBlockTableRecord->appendAcDbEntity (pRightEye)) != Acad::eOk ) { delete pRightEye ; delete pMouth ; pBlockTableRecord->erase () ; pBlockTableRecord->close () ; return (es) ; } pRightEye->close () ;

if ( (es =pBlockTableRecord->appendAcDbEntity (pMouth)) != Acad::eOk ) { delete pMouth ; pBlockTableRecord->erase () ; pBlockTableRecord->close () ; return (es) ; } pMouth->close () ;

pBlockTableRecord->close () ;

return (Acad::eOk) ; }

插入块输入块的名称

void insrtBlk() { char blkName; AcDbDatabase *pCurDb; AcDbBlockTable *pBlkTable; AcDbBlockTableRecord *pBlkTableRecord; AcDbBlockReference *pInsrtObj; AcDbObjectId blkId;

AcGePoint3d insPt;

int retCode;

retCode = acedGetString(0, "\nEnter Block Name: ", blkName); if(retCode != RTNORM || blkName == '\0') { acutPrintf("\nInvalid block name."); return; }

pCurDb = acdbHostApplicationServices()->workingDatabase();

// Check to see if the block table // has blkName

pCurDb->getBlockTable(pBlkTable, AcDb::kForRead); if(!pBlkTable->has(blkName)) { acutPrintf("\nBlock definition %s not found. ", blkName); pBlkTable->close(); return; }

// Get the AcDbObjectId of the block // definition. pBlkTable->getAt(blkName, blkId);

pBlkTable->getAt(ACDB_MODEL_SPACE, pBlkTableRecord, AcDb::kForWrite); pBlkTable->close(); acedInitGet(RSG_NONULL, NULL); acedGetPoint(NULL, "\nPick insertion point: ", asDblArray(insPt));

pInsrtObj = new AcDbBlockReference(insPt, blkId);

// Here is where you can set scale, rotation and other // properties to the block entity. If you want to // see the AcDbBlockReference class for more details.

pBlkTableRecord->appendAcDbEntity(blkId, pInsrtObj);

pBlkTableRecord->close(); pInsrtObj->close(); }

Pangge_118 发表于 2004-5-24 15:47:00

// This is command 'INSERTBLK' void defineblockwithattrib() { AcDbObjectId blockId; AcGePoint3d basePoint(0.0,0.0,0.0); double textHeight=3.5; double textAngle=0.0;

int retCode = 0; AcDbDatabase *pCurDb; AcDbBlockTable *pBlockTable = NULL; AcDbBlockTableRecord *pBlockRecord = new AcDbBlockTableRecord; AcDbObjectId entityId; AcGeMatrix3d ucsMat;

//第一步：设置块定义的块名和基点 pBlockRecord->setName("ROUGHNESS"); pBlockRecord->setOrigin(basePoint); //写状态下打开块表 pCurDb = acdbHostApplicationServices()->workingDatabase(); pCurDb->getBlockTable(pBlockTable,AcDb::kForWrite);

//第二步：增加块表记录到块表 pBlockTable->add(blockId,pBlockRecord);

//第三步：创建粗糙度标注符号实体 AcGePoint2d plinePt; AcGePoint2dArray plinePtArr;

plinePt.x=1.4*tan(PI/6.0)*textHeight; plinePt.y=1.4*textHeight; plinePtArr.append(plinePt);

plinePt.x=-1.4*tan(PI/6.0)*textHeight; plinePt.y=1.4*textHeight; plinePtArr.append(plinePt);

plinePt.x=0.0; plinePt.y=0.0; plinePtArr.append(plinePt);

plinePt.x=2.8*tan(PI/6)*textHeight; plinePt.y=2.8*textHeight; plinePtArr.append(plinePt);

AcDbPolyline *pLine = new AcDbPolyline(4); for(int idx=0;idx<4;idx++) { plinePt=plinePtArr.at(idx); pLine->addVertexAt(idx,plinePt); }

//把粗糙度标注符号实体加入块表记录中

pBlockRecord->appendAcDbEntity(entityId,pLine); pLine->close();

 //第四步：创建属性定义 AcDbAttributeDefinition *pAttdef =new AcDbAttributeDefinition;

//设置属性定义值

//定义属性的位置 AcGePoint3d attposition(-5.0,6.0,0.0); pAttdef->setPosition(attposition); pAttdef->setHeight(textHeight); pAttdef->setRotation(textAngle); pAttdef->setHorizontalMode(AcDb::kTextLeft); pAttdef->setVerticalMode(AcDb::kTextBase); pAttdef->setPrompt("粗糙度"); pAttdef->setTextString("3.2"); pAttdef->setTag("粗糙度"); pAttdef->setInvisible(Adesk::kFalse); pAttdef->setVerifiable(Adesk::kFalse); pAttdef->setPreset(Adesk::kFalse); pAttdef->setConstant(Adesk::kFalse); pAttdef->setFieldLength(4);

//把属性定义加入块中

pBlockRecord->appendAcDbEntity(entityId,pAttdef); pAttdef->close(); pBlockRecord->close(); pBlockTable->close(); return; }

// This is command 'INSBLOCK' void insblock() { // TODO: Implement the command char blkName; AcDbDatabase *pCurDb; AcDbBlockTable *pBlkTable; AcDbBlockTableRecord *pBlkTableRecord; AcDbBlockTableRecord *pBlkDefRecord; AcDbBlockReference *pInsrtObj; AcDbEntity *pEnt; AcDbBlockTableRecordIterator *pIterator; AcDbAttributeDefinition *pAttDef; AcDbAttribute *pAtt; AcDbObjectId blkId; AcDbObjectId insrtId; char *pTagPrompt; AcGePoint3d insPt; AcGePoint3d basePt; int retCode; //第一步：判断块是不是存在 retCode=acedGetString(0,"\nEnter Block Name:",blkName); if(retCode != RTNORM || blkName=='\0') { acutPrintf("\n Invalid block name"); return; }

pCurDb = acdbHostApplicationServices()->workingDatabase(); pCurDb->getBlockTable(pBlkTable,AcDb::kForRead); if(!pBlkTable->has(blkName)) { acutPrintf("\nBlock definition %s not found.",blkName); pBlkTable->close(); return; }

//Get the AcDbObjectId of the block definition. pBlkTable->getAt(blkName,blkId); //Get the block record of the model space to add the //block reference pBlkTable->getAt(ACDB_MODEL_SPACE,pBlkTableRecord,AcDb::kForWrite); pBlkTable->close();

//第二步：创建块参考实体 acedInitGet(RSG_NONULL,NULL); acedGetPoint(NULL,"\nPick insertion point:",asDblArray(insPt)); pInsrtObj = new AcDbBlockReference(insPt,blkId);

//here is where you can set scale.rotation and other //properties to the block entity. if you want to //see the AcDbBlockReference class for more details

// pBlkTableRecord->appendAcDbEntity(insrtId,pInsrtObj);

//第三步：根据块中的属性定义来定义一个属性实体,并把属性实体加入块参考对象中 acdbOpenObject(pBlkDefRecord,blkId,AcDb::kForWrite); //Now check to see if the block Definition //has attributes.if if does we will add //a Block Table Record Iterator to step through //the entity and find the attribute Definitions.

if(pBlkDefRecord->hasAttributeDefinitions()) { pBlkDefRecord->newIterator(pIterator); //check to see if the entity is a attribue definition. for(pIterator->start();!pIterator->done(); pIterator->step()) { pIterator->getEntity(pEnt,AcDb::kForRead); //check to see if the entity is an attribute definition pAttDef = AcDbAttributeDefinition::cast(pEnt); if(pAttDef != NULL && !pAttDef->isConstant()) { //if it is and it's not constant //create a new attribute pAtt = new AcDbAttribute();

//setPropertiesFrom will copy Color. //Layer,Linetype,Linetype Scale and Visiblity pAtt->setPropertiesFrom(pAttDef); //setup more properties from the attribute definition pAtt->setInvisible(pAttDef->isInvisible()); basePt = pAttDef->position(); basePt += pInsrtObj->position().asVector(); pAtt->setPosition(basePt); pAtt->setHeight(pAttDef->height()); pAtt->setRotation(pAttDef->rotation());

//take note how we get the tag. pTagPrompt = pAttDef->tag(); pAtt->setTag(pTagPrompt); free(pTagPrompt); //normally you would prompt the user //and ask for input values pTagPrompt = pAttDef->prompt(); acutPrintf("%s%s","\n",pTagPrompt); free(pTagPrompt);

//The setFieldLength is not required //even though it is listed in the documentation pAtt->setFieldLength(25);

//setTextString is the value the //attribute recieves which would //normally be a user input value. pAtt->setTextString("6.4"); //将属性加入块参考对象中去 pInsrtObj->appendAttribute(pAtt); pAtt->close(); }//end if pEnt->close(); }//end for } //end if pBlkTableRecord->appendAcDbEntity(insrtId,pInsrtObj); delete pIterator; //Note that we close the Model space block //table record after we have added our attribute pBlkTableRecord->close(); pBlkDefRecord->close(); pInsrtObj->close();

}

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在ARX中如何定义一个复杂块,望高手指点