com.openinventor.inventor

Class SbVec2f

java.lang.Object

com.openinventor.inventor.SbBasic

com.openinventor.inventor.SbVec2f

public class SbVec2f
extends SbBasic

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

See also:

SbRotation, SbRotationd, SbVec2d, SbVec2i32, SbVec2s, SbVec3d, SbVec3f, SbVec3i32, SbVec3s, SbVec4b, SbVec4d, SbVec4f, SbVec4i32, SbVec4s, SbVec4ub, SbVec4ui32, SbVec4us

Field Summary

Fields

Modifier and Type	Field and Description
float[]	array

Constructor Summary

Constructors

Constructor and Description
SbVec2f()
SbVec2f(float val) Constructor that sets all components to the same value.
SbVec2f(float[] components)
SbVec2f(float c0, float c1)
SbVec2f(SbVec2f copyFrom)

Method Summary

Modifier and Type	Method and Description
void	add(SbVec2f u) Component-wise vector addition operator.
void	divide(float d) Component-wise scalar division operator.
float	dot(SbVec2f v) Returns dot (inner) product of vector and another vector.
boolean	equals(java.lang.Object obj)
boolean	equals(SbVec2f v, float tolerance) Equality comparison within given tolerance - the square of the length of the maximum distance between the two vectors.
float[]	getValue()
float	getValueAt(int index)
float	getX()
float	getY()
float	length() Returns geometric length of vector.
float	lengthSquared() Returns square length of vector.
SbVec2f	minus(SbVec2f v2) Component-wise binary vector subtraction operator.
void	multiply(float d) Component-wise scalar multiplication operator.
void	multiply(SbVec2f v) Component-wise vector multiplication operator.
void	negate() Negates each component of vector in place.
float	normalize() Changes vector to be unit length.
SbVec2f	over(float d) Component-wise binary scalar division operator.
SbVec2f	plus(SbVec2f v2) Component-wise binary vector addition operator.
SbVec2f	setValue(float[] components)
SbVec2f	setValue(float[] components, int startIndex)
SbVec2f	setValue(float c0, float c1)
SbVec2f	setValue(SbVec2d vec2d) Sets value of vector from a double precision vector.
void	setValue(SbVec2f copyFrom)
void	setValueAt(int index, float value)
void	setX(float value)
void	setY(float value)
void	substract(SbVec2f u) Component-wise vector subtraction operator.
SbVec2f	times(float d) Component-wise binary scalar multiplication operator.
SbVec2f	times(SbVec2f v) Component-wise vector multiplication operator.
static SbVec2f[]	toArray(long nativeArray, long length)

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

array

public final float[] array

Constructor Detail

SbVec2f

public SbVec2f()

SbVec2f

public SbVec2f(float c0,
               float c1)

SbVec2f

public SbVec2f(float[] components)

SbVec2f

public SbVec2f(SbVec2f copyFrom)

SbVec2f

public SbVec2f(float val)

Constructor that sets all components to the same value.

Method Detail

setX

public void setX(float value)

setValue

public void setValue(SbVec2f copyFrom)

setValue

public SbVec2f setValue(float c0,
                        float c1)

setValueAt

public void setValueAt(int index,
                       float value)

getValue

public float[] getValue()

setValue

public SbVec2f setValue(float[] components,
                        int startIndex)

getValueAt

public float getValueAt(int index)

setValue

public SbVec2f setValue(float[] components)

getY

public float getY()

setY

public void setY(float value)

getX

public float getX()

over

public SbVec2f over(float d)

Component-wise binary scalar division operator.

toArray

public static SbVec2f[] toArray(long nativeArray,
                                long length)

minus

public SbVec2f minus(SbVec2f v2)

Component-wise binary vector subtraction operator.

equals

public boolean equals(SbVec2f v,
                      float tolerance)

Equality comparison within given tolerance - the square of the length of the maximum distance between the two vectors.

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

plus

public SbVec2f plus(SbVec2f v2)

Component-wise binary vector addition operator.

lengthSquared

public float lengthSquared()

Returns square length of vector. Faster than length().

length

public float length()

Returns geometric length of vector.

normalize

public float normalize()

Changes vector to be unit length.

negate

public void negate()

Negates each component of vector in place.

dot

public float dot(SbVec2f v)

Returns dot (inner) product of vector and another vector.

divide

public void divide(float d)

Component-wise scalar division operator.

multiply

public void multiply(SbVec2f v)

Component-wise vector multiplication operator.

add

public void add(SbVec2f u)

Component-wise vector addition operator.

times

public SbVec2f times(float d)

Component-wise binary scalar multiplication operator.

substract

public void substract(SbVec2f u)

Component-wise vector subtraction operator.

setValue

public SbVec2f setValue(SbVec2d vec2d)

Sets value of vector from a double precision vector. If the values stored in the double precision argument(s) are too large to be stored in single precision variables, some loss of data will occur during the data transfer. The loss of data is defined by the standard C type conversion from double to float. It is the application's responsibility to handle this potential loss of data appropriately.

NOTE: Open Inventor fields still store only single precision values, not double precision values.

times

public SbVec2f times(SbVec2f v)

Component-wise vector multiplication operator.

multiply

public void multiply(float d)

Component-wise scalar multiplication operator.