[mxcad_2d API documentation] (../README. md)/[2d] (../modules/2d. md)/McDbObject

Class: McDbObject ​

2d.McDbObject

Represents a database object and provides some basic operation functions for objects in the database, such as memory allocation, object deletion, object ID, archiving, and other operations.

Hierarchy ​

• McRxObject

  ↳ McDbObject

  ↳↳ McDbLinetypeTableRecord

  ↳↳ McDbDimStyleTableRecord

  ↳↳ McDbTextStyleTableRecord

  ↳↳ McDbLayerTableRecord

  ↳↳ McDbLayerTable

  ↳↳ McDbLinetypeTable

  ↳↳ McDbDimStyleTable

  ↳↳ McDbTextStyleTable

  ↳↳ McDbBlockTableRecord

  ↳↳ McDbBlockTable

  ↳↳ McDbRasterImageDef

  ↳↳ McDbDictionary

  ↳↳ McDbXrecord

  ↳↳ McDbGroup

  ↳↳ McDbEntity

  ↳↳ McDbSpatialFilter

Table of contents ​

Constructors ​

• constructor

Properties ​

• imp

Accessors ​

• dxf0
• objectName

Methods ​

• assertObjectModification
• clone
• createExtensionDictionary
• erase
• getDatabase
• getDatabaseIndexId
• getExtensionDictionary
• getGripPoints
• getHandle
• getImp
• getJson
• getObjectID
• getOwnerID
• initTempObject
• isErased
• isHaveExtensionDictionary
• isKindOf
• isNull
• moveGripPointsAt
• setJson
• unErase

Constructors ​

constructor ​

• new McDbObject(imp?)

Constructor.

Parameters ​

Example

import { McDbObject } from "mxcad";

const obj = new McDbObject()

Overrides ​

McRxObject.constructor

Properties ​

imp ​

• imp: any = 0

Internal implementation object.

Inherited from ​

McRxObject.imp

Accessors ​

dxf0 ​

• get dxf0(): string

Obtain the type name of the object's DXF group code, which is the same as the DXF group code in AutoCAD. For example, the type name of the line is McDbLine, and the group code value for DXF0 is: LINE and DXF0 group code values can be used for type filtering when constructing sets.

Returns ​

string

Inherited from ​

McRxObject.dxf0

objectName ​

• get objectName(): string

Get the object name.

Returns ​

string

Return object name

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
console.log(obj.objectName);

Inherited from ​

McRxObject.objectName

Methods ​

assertObjectModification ​

▸ assertObjectModification(autoUndo?): number

Setting the state of the object to be changed can automatically trigger the update display function to update the display. For example, if the block table record is updated and the block reference needs to be notified to update the display, this function can be called.

Parameters ​

Returns ​

number

Example

//Assuming obj is a database object
obj.assertObjectModification()

clone ​

▸ clone(): null | McDbObject

Clone objects.

Returns ​

null | McDbObject

The cloned object.

Example

//Assuming obj is a database object
const obj_clone = obj.clone();

createExtensionDictionary ​

▸ createExtensionDictionary(): boolean

Create extended dictionary data for objects

Returns ​

boolean

Example

//Assuming obj is a database object
const res = obj.createExtensionDictionary();

erase ​

▸ erase(): boolean

Delete object.

Returns ​

boolean

Whether the deletion was successful.

Example

//Assuming obj is a database object
const res = obj.erase();
console.log(res);

getDatabase ​

▸ getDatabase(): McDbDatabase

Get the database where the object is located

Returns ​

McDbDatabase

Return to database

Example

//Assuming obj is a database object
const data = obj.getDatabase();

getDatabaseIndexId ​

▸ getDatabaseIndexId(): number

Get the index ID of the object

Returns ​

number

Example

//Assuming obj is a database object
const id = obj.getDatabaseIndexId();

getExtensionDictionary ​

▸ getExtensionDictionary(): McDbDictionary

Obtain the extended dictionary data of the object

Returns ​

McDbDictionary

Expand dictionary data

Example

//Assuming obj is a database object
const id = obj.getOwnerID();

getGripPoints ​

▸ getGripPoints(): McGePoint3dArray

Get the control points of the object

Returns ​

McGePoint3dArray

Example

//Assuming obj is a database object
const ptArr = obj.getGripPoints();

getHandle ​

▸ getHandle(): string

Obtain object handle

Returns ​

string

Return object handle

Example

//Assuming obj is a database object
const handle = obj.getHandle();

getImp ​

▸ getImp(): any

Retrieve internal implementation objects.

Returns ​

any

Internal implementation object.

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
let imp = obj.getImp();

Inherited from ​

McRxObject.getImp

getJson ​

▸ getJson(): string

Retrieve a string in JSON format.

Returns ​

string

A string in JSON format.

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
const json = obj.getJson()

Inherited from ​

McRxObject.getJson

getObjectID ​

▸ getObjectID(): McObjectId

Get the object ID.

Returns ​

McObjectId

Object ID.

Example

import { McDbObject } from "mxcad";
const id = obj.getObjectID();

getOwnerID ​

▸ getOwnerID(): number

Obtain the ID of the object owner

Returns ​

number

Example

//Assuming obj is a database object
const id = obj.getOwnerID();

initTempObject ​

▸ initTempObject(imp): void

Initialize temporary objects.

Parameters ​

Returns ​

void

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
obj.initTempObject()

Inherited from ​

McRxObject.initTempObject

isErased ​

▸ isErased(): boolean

Has the object been deleted

Returns ​

boolean

Example

//Assuming obj is a database object
const res = obj.isErased();
console.log(res);

isHaveExtensionDictionary ​

▸ isHaveExtensionDictionary(): boolean

Is there any extended dictionary data available

Returns ​

boolean

Example

//Assuming obj is a database object
const res = obj.isHaveExtensionDictionary();

isKindOf ​

▸ isKindOf(sObjectName): boolean

Determine object type

Parameters ​

Returns ​

boolean

Return whether the object is of the target type

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
let isKind = obj.isKindOf('SomeObjectType');
console.log(isKind); //  Output: True or false

Inherited from ​

McRxObject.isKindOf

isNull ​

▸ isNull(): any

Determine if it is an empty object

Returns ​

any

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
console.log(obj.isNull()); //  Output: True or false

Inherited from ​

McRxObject.isNull

moveGripPointsAt ​

▸ moveGripPointsAt(iIndex, dXOffset, dYOffset, dZOffset): any

Control points for moving objects

Parameters ​

Returns ​

any

Example

//Assuming obj is a database object
obj.moveGripPointsAt(1,10,10,10);

setJson ​

▸ setJson(str): boolean

Set a string in JSON format.

Parameters ​

Returns ​

boolean

Is the setting successful.

Example

import { McRxObject } from 'mxcad';

let obj = new McRxObject();
const res = obj.setJson('{"key": "value"}');
console.log(res)

Inherited from ​

McRxObject.setJson

unErase ​

▸ unErase(): boolean

Anti delete object.

Returns ​

boolean

Example

//Assuming obj is a database object
const res = obj.unErase();
console.log(res);