Class Euler

java.lang.Object

org.javagi.base.ProxyInstance

org.gnome.graphene.Euler

All Implemented Interfaces:

Proxy

@Generated("org.javagi.JavaGI")
public class Euler
extends ProxyInstance

Describe a rotation using Euler angles.

The contents of the graphene_euler_t structure are private and should never be accessed directly.

Since:

1.2

Constructor Summary

Constructors

Constructor	Description
Euler()	Allocate a new Euler.
Euler(Arena arena)	Allocate a new Euler.
Euler(MemorySegment address)	Create a Euler proxy instance for the provided memory address.
Euler(Vec3 angles, EulerOrder order)	Allocate a new Euler with the fields set to the provided values.
Euler(Vec3 angles, EulerOrder order, Arena arena)	Allocate a new Euler with the fields set to the provided values.

Method Summary

Modifier and Type	Method	Description
static Euler	alloc()	Allocates a new graphene_euler_t.
boolean	equal(Euler b)	Checks if two graphene_euler_t are equal.
void	free()	Frees the resources allocated by graphene_euler_alloc().
float	getAlpha()	Retrieves the first component of the Euler angle vector, depending on the order of rotation.
float	getBeta()	Retrieves the second component of the Euler angle vector, depending on the order of rotation.
float	getGamma()	Retrieves the third component of the Euler angle vector, depending on the order of rotation.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
EulerOrder	getOrder()	Retrieves the order used to apply the rotations described in the graphene_euler_t structure, when converting to and from other structures, like graphene_quaternion_t and graphene_matrix_t.
static @Nullable Type	getType()	Get the GType of the Euler class.
float	getX()	Retrieves the rotation angle on the X axis, in degrees.
float	getY()	Retrieves the rotation angle on the Y axis, in degrees.
float	getZ()	Retrieves the rotation angle on the Z axis, in degrees.
Euler	init(float x, float y, float z)	Initializes a graphene_euler_t using the given angles.
Euler	initFromEuler(@Nullable Euler src)	Initializes a graphene_euler_t using the angles and order of another graphene_euler_t.
Euler	initFromMatrix(@Nullable Matrix m, EulerOrder order)	Initializes a graphene_euler_t using the given rotation matrix.
Euler	initFromQuaternion(@Nullable Quaternion q, EulerOrder order)	Initializes a graphene_euler_t using the given normalized quaternion.
Euler	initFromRadians(float x, float y, float z, EulerOrder order)	Initializes a graphene_euler_t using the given angles and order of rotation.
Euler	initFromVec3(@Nullable Vec3 v, EulerOrder order)	Initializes a graphene_euler_t using the angles contained in a graphene_vec3_t.
Euler	initWithOrder(float x, float y, float z, EulerOrder order)	Initializes a graphene_euler_t with the given angles and order.
@Nullable Vec3	readAngles()	Read the value of the field angles.
EulerOrder	readOrder()	Read the value of the field order.
void	reorder(EulerOrder order, Euler res)	Reorders a graphene_euler_t using order.
void	toMatrix(Matrix res)	Converts a graphene_euler_t into a transformation matrix expressing the extrinsic composition of rotations described by the Euler angles.
void	toQuaternion(Quaternion res)	Converts a graphene_euler_t into a graphene_quaternion_t.
void	toVec3(Vec3 res)	Retrieves the angles of a graphene_euler_t and initializes a graphene_vec3_t with them.
void	writeAngles(@Nullable Vec3 angles)	Write a value in the field angles.
void	writeOrder(EulerOrder order)	Write a value in the field order.

Methods inherited from class ProxyInstance

equals, handle, hashCode

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Euler

public Euler(MemorySegment address)

Create a Euler proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

Euler

public Euler(Arena arena)

Allocate a new Euler.

Parameters:

arena - to control the memory allocation scope

Euler

public Euler()

Allocate a new Euler. The memory is allocated with Arena.ofAuto().

Euler

public Euler(Vec3 angles,
 EulerOrder order,
 Arena arena)

Allocate a new Euler with the fields set to the provided values.

Parameters:

angles - value for the field angles

order - value for the field order

arena - to control the memory allocation scope

Euler

public Euler(Vec3 angles,
 EulerOrder order)

Allocate a new Euler with the fields set to the provided values. The memory is allocated with Arena.ofAuto().

Parameters:

angles - value for the field angles

order - value for the field order

Method Details

getType

public static @Nullable Type getType()

Get the GType of the Euler class.

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

readAngles

public @Nullable Vec3 readAngles()

Read the value of the field angles.

Returns:

The value of the field angles

writeAngles

public void writeAngles(@Nullable Vec3 angles)

Write a value in the field angles.

Parameters:

angles - The new value for the field angles

readOrder

public EulerOrder readOrder()

Read the value of the field order.

Returns:

The value of the field order

writeOrder

public void writeOrder(EulerOrder order)

Write a value in the field order.

Parameters:

order - The new value for the field order

alloc

public static Euler alloc()

Allocates a new graphene_euler_t.

The contents of the returned structure are undefined.

Returns:

the newly allocated graphene_euler_t

Since:

1.2

equal

public boolean equal(Euler b)

Checks if two graphene_euler_t are equal.

Parameters:

b - a graphene_euler_t

Returns:

true if the two graphene_euler_t are equal

Since:

1.2

free

public void free()

Frees the resources allocated by graphene_euler_alloc().

Since:

1.2

getAlpha

public float getAlpha()

Retrieves the first component of the Euler angle vector, depending on the order of rotation.

See also: graphene_euler_get_x()

Returns:

the first component of the Euler angle vector, in radians

Since:

1.10

getBeta

public float getBeta()

Retrieves the second component of the Euler angle vector, depending on the order of rotation.

See also: graphene_euler_get_y()

Returns:

the second component of the Euler angle vector, in radians

Since:

1.10

getGamma

public float getGamma()

Retrieves the third component of the Euler angle vector, depending on the order of rotation.

See also: graphene_euler_get_z()

Returns:

the third component of the Euler angle vector, in radians

Since:

1.10

getOrder

public EulerOrder getOrder()

Retrieves the order used to apply the rotations described in the graphene_euler_t structure, when converting to and from other structures, like graphene_quaternion_t and graphene_matrix_t.

This function does not return the EulerOrder.DEFAULT enumeration value; it will return the effective order of rotation instead.

Returns:

the order used to apply the rotations

Since:

1.2

getX

public float getX()

Retrieves the rotation angle on the X axis, in degrees.

Returns:

the rotation angle

Since:

1.2

getY

public float getY()

Retrieves the rotation angle on the Y axis, in degrees.

Returns:

the rotation angle

Since:

1.2

getZ

public float getZ()

Retrieves the rotation angle on the Z axis, in degrees.

Returns:

the rotation angle

Since:

1.2

init

public Euler init(float x,
 float y,
 float z)

Initializes a graphene_euler_t using the given angles.

The order of the rotations is EulerOrder.DEFAULT.

Parameters:

x - rotation angle on the X axis, in degrees

y - rotation angle on the Y axis, in degrees

z - rotation angle on the Z axis, in degrees

Returns:

the initialized graphene_euler_t

Since:

1.2

initFromEuler

public Euler initFromEuler(@Nullable Euler src)

Initializes a graphene_euler_t using the angles and order of another graphene_euler_t.

If the graphene_euler_t src is null, this function is equivalent to calling graphene_euler_init() with all angles set to 0.

Parameters:

src - a graphene_euler_t

Returns:

the initialized graphene_euler_t

Since:

1.2

initFromMatrix

public Euler initFromMatrix(@Nullable Matrix m,
 EulerOrder order)

Initializes a graphene_euler_t using the given rotation matrix.

If the graphene_matrix_t m is null, the graphene_euler_t will be initialized with all angles set to 0.

Parameters:

m - a rotation matrix

order - the order used to apply the rotations

Returns:

the initialized graphene_euler_t

Since:

1.2

initFromQuaternion

public Euler initFromQuaternion(@Nullable Quaternion q,
 EulerOrder order)

Initializes a graphene_euler_t using the given normalized quaternion.

If the graphene_quaternion_t q is null, the graphene_euler_t will be initialized with all angles set to 0.

Parameters:

q - a normalized graphene_quaternion_t

order - the order used to apply the rotations

Returns:

the initialized graphene_euler_t

Since:

1.2

initFromRadians

public Euler initFromRadians(float x,
 float y,
 float z,
 EulerOrder order)

Initializes a graphene_euler_t using the given angles and order of rotation.

Parameters:

x - rotation angle on the X axis, in radians

y - rotation angle on the Y axis, in radians

z - rotation angle on the Z axis, in radians

order - order of rotations

Returns:

the initialized graphene_euler_t

Since:

1.10

initFromVec3

public Euler initFromVec3(@Nullable Vec3 v,
 EulerOrder order)

Initializes a graphene_euler_t using the angles contained in a graphene_vec3_t.

If the graphene_vec3_t v is null, the graphene_euler_t will be initialized with all angles set to 0.

Parameters:

v - a graphene_vec3_t containing the rotation angles in degrees

order - the order used to apply the rotations

Returns:

the initialized graphene_euler_t

Since:

1.2

initWithOrder

public Euler initWithOrder(float x,
 float y,
 float z,
 EulerOrder order)

Initializes a graphene_euler_t with the given angles and order.

Parameters:

x - rotation angle on the X axis, in degrees

y - rotation angle on the Y axis, in degrees

z - rotation angle on the Z axis, in degrees

order - the order used to apply the rotations

Returns:

the initialized graphene_euler_t

Since:

1.2

reorder

public void reorder(EulerOrder order,
 Euler res)

Reorders a graphene_euler_t using order.

This function is equivalent to creating a graphene_quaternion_t from the given graphene_euler_t, and then converting the quaternion into another graphene_euler_t.

Parameters:

order - the new order

res - return location for the reordered graphene_euler_t

Since:

1.2

toMatrix

public void toMatrix(Matrix res)

Converts a graphene_euler_t into a transformation matrix expressing the extrinsic composition of rotations described by the Euler angles.

The rotations are applied over the reference frame axes in the order associated with the graphene_euler_t; for instance, if the order used to initialize this Euler is EulerOrder.XYZ:

• the first rotation moves the body around the X axis with an angle φ
• the second rotation moves the body around the Y axis with an angle of ϑ
• the third rotation moves the body around the Z axis with an angle of ψ

The rotation sign convention is right-handed, to preserve compatibility between Euler-based, quaternion-based, and angle-axis-based rotations.

Parameters:

res - return location for a graphene_matrix_t

Since:

1.2

toQuaternion

public void toQuaternion(Quaternion res)

Converts a graphene_euler_t into a graphene_quaternion_t.

Parameters:

res - return location for a graphene_quaternion_t

Since:

1.10

toVec3

public void toVec3(Vec3 res)

Retrieves the angles of a graphene_euler_t and initializes a graphene_vec3_t with them.

Parameters:

res - return location for a graphene_vec3_t

Since:

1.2