---
name: "SoGate"
section: "3iv"
platform: "linux"
package: "inventor-doc"
version: "2.1.6+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SoGate/3iv"
---

# SoGate(3iv)

selectively copies its input to its output

## NAME

SoGate — selectively copies its input to its output

## INHERITS FROM

SoBase \> SoFieldContainer \> SoEngine \> SoGate

## SYNOPSIS

**#include \<Inventor/engines/SoGate.h\>**

Inputs from class SoGate:

**SoSFBool**	**enable**\
 **SoSFTrigger**	**trigger**\
 **\<inputType\>**	**input**

Outputs from class SoGate:

**(\<outputType\>)**	**output**

Methods from class SoGate:

	**SoGate(SoType inputType)**

Methods from class SoEngine:

**static SoType**	**getClassTypeId()**\
 **virtual int**	**getOutputs(SoEngineOutputList &list) const**\
 **SoEngineOutput \***	**getOutput(const SbName &outputName) const**\
 **SbBool**	**getOutputName(const SoEngineOutput \*output, SbName &outputName) const**\
 **SoEngine \***	**copy() const**\
 **static SoEngine \***	**getByName(const SbName &name)**\
 **static int**	**getByName(const SbName &name, SoEngineList &list)**

Methods from class SoFieldContainer:

**void**	**setToDefaults()**\
 **SbBool**	**hasDefaultValues() const**\
 **SbBool**	**fieldsAreEqual(const SoFieldContainer \*fc) const**\
 **void**	**copyFieldValues(const SoFieldContainer \*fc, SbBool copyConnections = FALSE)**\
 **SbBool**	**set(const char \*fieldDataString)**\
 **void**	**get(SbString &fieldDataString)**\
 **virtual int**	**getFields(SoFieldList &resultList) const**\
 **virtual SoField \***	**getField(const SbName &fieldName) const**\
 **SbBool**	**getFieldName(const SoField \*field, SbName &fieldName) const**\
 **SbBool**	**isNotifyEnabled() const**\
 **SbBool**	**enableNotify(SbBool flag)**

Methods from class SoBase:

**void**	**ref()**\
 **void**	**unref() const**\
 **void**	**unrefNoDelete() const**\
 **void**	**touch()**\
 **virtual SoType**	**getTypeId() const**\
 **SbBool**	**isOfType(SoType type) const**\
 **virtual void**	**setName(const SbName &name)**\
 **virtual SbName**	**getName() const**

## DESCRIPTION

**This engine selectively copies its input to its output. The type of the input field can be any subclass of SoMField**. The type is specified when an instance of the class is created. For example, **SoGate(SoMFFloat::getClassTypeId())**  creates an engine that copies floating-point values.

The **enable** input controls continous flow-through of values. While **enable** is TRUE, the input will be copied to the output. Alternatively, by touching the **trigger** input, you can copy a single value from the input to the output.

Note that unlike most other engine fields, **input** and **output** are pointers. Note also that by default **input** does not contain any values.

## INPUTS

**SoSFBool**	**enable**\
 Enable continous flow-through.

**SoSFTrigger**	**trigger**\
 Copy a single value.

**\<inputType\>**	**input**\
 The value that is copied to the output when the gate is open.

## OUTPUTS

**(\<outputType\>)**	**output**\
 Contains a copy of the input value if the gate is open.

## METHODS

	**SoGate(SoType inputType)**\
 Constructor. The argument specifies the type of the input field.

## FILE FORMAT/DEFAULTS

```
Gate {
type	<inputType>
input	[]
enable	FALSE
trigger
}
```

## SEE ALSO

**SoEngineOutput, SoConcatenate, SoSelectOne**