---
name: "SbVec2f"
section: "3iv"
platform: "linux"
package: "inventor-doc"
version: "2.1.6+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SbVec2f/3iv"
---

# SbVec2f(3iv)

2D vector class

## NAME

SbVec2f — 2D vector class

## INHERITS FROM

SbVec2f

## SYNOPSIS

**#include \<Inventor/SbLinear.h\>**

Methods from class SbVec2f:

	**SbVec2f()**\
 	**SbVec2f(const float v\[2\])**\
 	**SbVec2f(float x, float y)**\
 **float**	**dot(const SbVec2f &v) const**\
 **SbBool**	**equals(const SbVec2f v, float tolerance) const**\
 **const float \***	**getValue() const**\
 **void**	**getValue(float &x, float &y) const**\
 **float**	**length() const**\
 **void**	**negate()**\
 **float**	**normalize()**\
 **SbVec2f &**	**setValue(const float v\[2\])**\
 **SbVec2f &**	**setValue(float x, float y)**\
 **float &**	**operator \[\](int i)**\
 **const float &**	**operator \[\](int i)**\
 **SbVec2f &**	**operator \*=(float d)**\
 **SbVec2f &**	**operator /=(float d)**\
 **SbVec2f &**	**operator +=(const SbVec2f &u)**\
 **SbVec2f &**	**operator -=(const SbVec2f &u)**\
 **SbVec2f**	**operator -() const**\
 **SbVec2f**	**operator \*(const SbVec2f &v, float d)**\
 **SbVec2f**	**operator \*(float d, const SbVec2f &v)**\
 **SbVec2f**	**operator /(const SbVec2f &v, float d)**\
 **SbVec2f**	**operator +(const SbVec2f &v1, const SbVec2f &v2)**\
 **SbVec2f**	**operator -(const SbVec2f &v1, const SbVec2f &v2)**\
 **int**	**operator ==(const SbVec2f &v1, const SbVec2f &v2)**\
 **int**	**operator !=(const SbVec2f &v1, const SbVec2f &v2)**

## DESCRIPTION

**2D vector class used to store 2D vectors and points. This class is used throughout Inventor for arguments and return values.**

## METHODS

	**SbVec2f()**\
 Default constructor.

	**SbVec2f(const float v\[2\])**\
 	**SbVec2f(float x, float y)**\
 Constructor given vector components.

**float**	**dot(const SbVec2f &v) const**\
 Returns dot (inner) product of vector and another vector.

**SbBool**	**equals(const SbVec2f v, float tolerance) const**\
 Equality comparison within given tolerance — the square of the length of the maximum distance between the two vectors.

**const float \***	**getValue() const**\
 **void**	**getValue(float &x, float &y) const**\
 Returns vector components.

**float**	**length() const**\
 Returns geometric length of vector.

**void**	**negate()**\
 Negates each component of vector in place.

**float**	**normalize()**\
 Changes vector to be unit length.

**SbVec2f &**	**setValue(const float v\[2\])**\
 **SbVec2f &**	**setValue(float x, float y)**\
 Sets the vector components.

**float &**	**operator \[\](int i)**\
 **const float &**	**operator \[\](int i)**\
 Accesses indexed component of vector.

**SbVec2f &**	**operator \*=(float d)**\
 **SbVec2f &**	**operator /=(float d)**\
 Component-wise scalar multiplication and division operators.

**SbVec2f &**	**operator +=(const SbVec2f &u)**\
 **SbVec2f &**	**operator -=(const SbVec2f &u)**\
 Component-wise vector addition and subtraction operators.

**SbVec2f**	**operator -() const**\
 Nondestructive unary negation — returns a new vector.

**SbVec2f**	**operator \*(const SbVec2f &v, float d)**\
 **SbVec2f**	**operator \*(float d, const SbVec2f &v)**\
 **SbVec2f**	**operator /(const SbVec2f &v, float d)**\
 Component-wise binary scalar multiplication and division operators.

**SbVec2f**	**operator +(const SbVec2f &v1, const SbVec2f &v2)**\
 **SbVec2f**	**operator -(const SbVec2f &v1, const SbVec2f &v2)**\
 Component-wise binary vector addition and subtraction operators.

**int**	**operator ==(const SbVec2f &v1, const SbVec2f &v2)**\
 **int**	**operator !=(const SbVec2f &v1, const SbVec2f &v2)**\
 Equality comparison operators.

## SEE ALSO

**SbVec3f, SbVec4f, SbVec2s, SbRotation**