---
title: Class: DbBlockReference
source: https://vjmap.com/doc/Class_DbBlockReference.html
---

# Class: DbBlockReference

[default](#modulesdefaultmd).DbBlockReference

`DbBlockReference` 块参照实体.

### Hierarchy

- [*DbEntity*](#classesdefaultdbentitymd)

  ↳ **DbBlockReference**

  ↳↳ [*DbTable*](#classesdefaultdbtablemd)

  ↳↳ [*DbTable*](#classesdbtablemd)

### Table of contents

#### Constructors

- [constructor](#constructor)

#### Properties

- [alpha](#alpha)
- [attribute](#attribute)
- [blockname](#blockname)
- [cloneFromDb](#clonefromdb)
- [cloneObjectId](#cloneobjectid)
- [color](#color)
- [colorIndex](#colorindex)
- [layer](#layer)
- [lineWidth](#linewidth)
- [linetype](#linetype)
- [linetypeScale](#linetypescale)
- [matrix](#matrix)
- [normal](#normal)
- [position](#position)
- [ref](#ref)
- [rotation](#rotation)
- [scaleFactors](#scalefactors)
- [typename](#typename)
- [visibility](#visibility)
- [xdata](#xdata)

### Constructors

#### constructor

\+ **new DbBlockReference**(`prop?`: [*IDbBlockReference*](#interfacesdefaultidbblockreferencemd)): [*DbBlockReference*](#classesdefaultdbblockreferencemd)

构造函数

##### Parameters

| Name | Type | Default value |
| :------ | :------ | :------ |
| `prop` | [*IDbBlockReference*](#interfacesdefaultidbblockreferencemd) | {} |

**Returns:** [*DbBlockReference*](#classesdefaultdbblockreferencemd)

Overrides: [DbEntity](#classesdefaultdbentitymd)

### Properties

#### alpha

• `Optional` **alpha**: *number*

透明度. [0-255][0完全透明,255完全不透明]

Inherited from: [DbEntity](#classesdefaultdbentitymd).[alpha](#alpha)

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#### attribute

• `Optional` **attribute**: *Record*<string, string \| number \| [*DbText*](#classesdefaultdbtextmd)\>

属性字段值

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#### blockname

• `Optional` **blockname**: *string*

块名称.

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#### cloneFromDb

• `Optional` **cloneFromDb**: *string*

克隆的实体ID来源的图形，如为空，则取DbDocument中from的图形。也可以指定另外的图形

Inherited from: [DbEntity](#classesdefaultdbentitymd).[cloneFromDb](#clonefromdb)

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#### cloneObjectId

• `Optional` **cloneObjectId**: *string*

克隆的实体ID，DbDocument有from图形来源字段时有效.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[cloneObjectId](#cloneobjectid)

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#### color

• `Optional` **color**: *number*

颜色.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[color](#color)

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#### colorIndex

• `Optional` **colorIndex**: *number*

颜色索引. 0 随块. 1 Red.  2 Yellow. 3   Green.  4 Cyan.  5  Blue. 6   Magenta. 256 表示随层

Inherited from: [DbEntity](#classesdefaultdbentitymd).[colorIndex](#colorindex)

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#### layer

• `Optional` **layer**: *string*

图层.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[layer](#layer)

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#### lineWidth

• `Optional` **lineWidth**: *number*

线宽.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[lineWidth](#linewidth)

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#### linetype

• `Optional` **linetype**: *string*

线型.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[linetype](#linetype)

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#### linetypeScale

• `Optional` **linetypeScale**: *number*

线型比例.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[linetypeScale](#linetypescale)

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#### matrix

• `Optional` **matrix**: [*IDbMatrixOp*](#interfacesdefaultidbmatrixopmd)[]

矩阵.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[matrix](#matrix)

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#### normal

• `Optional` **normal**: [*number*, *number*, *undefined* \| *number*]

法向量.

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#### position

• `Optional` **position**: [*number*, *number*, *undefined* \| *number*]

坐标.

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#### ref

• `Optional` **ref**: *string*

参考外部图形，形式为 mapid/version,如 exam/v1.

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#### rotation

• `Optional` **rotation**: *number*

旋转角度.

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#### scaleFactors

• `Optional` **scaleFactors**: [*number*, *number*, *undefined* \| *number*]

缩放因子. [x方向，y方向,z方向]

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#### typename

• `Optional` **typename**: *string*

类型.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[typename](#typename)

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#### visibility

• `Optional` **visibility**: *boolean*

可见.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[visibility](#visibility)

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#### xdata

• `Optional` **xdata**: *string*

扩展数据.

Inherited from: [DbEntity](#classesdefaultdbentitymd).[xdata](#xdata)


<a name="classesdefaultdbcirclemd"></a>

[vjmap](#readmemd) / [Exports](#modulesmd) / [default](#modulesdefaultmd) / DbCircle