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

# SoDecomposeRotation(3iv)

decomposes rotation values

## NAME

SoDecomposeRotation — decomposes rotation values

## INHERITS FROM

SoBase \> SoFieldContainer \> SoEngine \> SoDecomposeRotation

## SYNOPSIS

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

Inputs from class SoDecomposeRotation:

**SoMFRotation**	**rotation**

Outputs from class SoDecomposeRotation:

**(SoMFVec3f)**	**axis**\
 **(SoMFFloat)**	**angle**

Methods from class SoDecomposeRotation:

	**SoDecomposeRotation()**

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 takes as input a rotation, and decomposes it into an axis value and a rotation angle (in radians).**

**The input can have multiple values, allowing the engine to decompose several rotations in** **parallel.**

## INPUTS

**SoMFRotation**	**rotation**\
 Rotation to be decomposed.

## OUTPUTS

**(SoMFVec3f)**	**axis**\
 Axis of rotation derived from the input.

**(SoMFFloat)**	**angle**\
 Angle (in radians) derived from the input.

## METHODS

	**SoDecomposeRotation()**\
 Constructor

## FILE FORMAT/DEFAULTS

```
DecomposeRotation {
rotation	0 0 1  0
}
```

## SEE ALSO

**SoDecomposeRotationFromTo, SoComposeRotation, SoEngineOutput**