Class Plane

java.lang.Object

org.javagi.base.ProxyInstance

org.gnome.graphene.Plane

All Implemented Interfaces:

Proxy

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

A 2D plane that extends infinitely in a 3D volume.

The contents of the graphene_plane_t are private, and should not be modified directly.

Since:

1.2

Constructor Summary

Constructors

Constructor	Description
Plane()	Allocate a new Plane.
Plane(Arena arena)	Allocate a new Plane.
Plane(MemorySegment address)	Create a Plane proxy instance for the provided memory address.
Plane(Vec3 normal, float constant)	Allocate a new Plane with the fields set to the provided values.
Plane(Vec3 normal, float constant, Arena arena)	Allocate a new Plane with the fields set to the provided values.

Method Summary

Modifier and Type	Method	Description
static Plane	alloc()	Allocates a new graphene_plane_t structure.
float	distance(Point3D point)	Computes the distance of point from a graphene_plane_t.
boolean	equal(Plane b)	Checks whether the two given graphene_plane_t are equal.
void	free()	Frees the resources allocated by graphene_plane_alloc().
float	getConstant()	Retrieves the distance along the normal vector of the given graphene_plane_t from the origin.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
void	getNormal(Vec3 normal)	Retrieves the normal vector pointing towards the origin of the given graphene_plane_t.
static @Nullable Type	getType()	Get the GType of the Plane class.
Plane	init(@Nullable Vec3 normal, float constant)	Initializes the given graphene_plane_t using the given normal vector and constant values.
Plane	initFromPlane(Plane src)	Initializes the given graphene_plane_t using the normal vector and constant of another graphene_plane_t.
Plane	initFromPoint(Vec3 normal, Point3D point)	Initializes the given graphene_plane_t using the given normal vector and an arbitrary co-planar point.
Plane	initFromPoints(Point3D a, Point3D b, Point3D c)	Initializes the given graphene_plane_t using the 3 provided co-planar points.
Plane	initFromVec4(Vec4 src)	Initializes the given graphene_plane_t using the components of the given graphene_vec4_t vector.
void	negate(Plane res)	Negates the normal vector and constant of a graphene_plane_t, effectively mirroring the plane across the origin.
void	normalize(Plane res)	Normalizes the vector of the given graphene_plane_t, and adjusts the constant accordingly.
float	readConstant()	Read the value of the field constant.
@Nullable Vec3	readNormal()	Read the value of the field normal.
void	transform(Matrix matrix, @Nullable Matrix normalMatrix, Plane res)	Transforms a graphene_plane_t this Plane using the given matrix and normalMatrix.
void	writeConstant(float constant)	Write a value in the field constant.
void	writeNormal(@Nullable Vec3 normal)	Write a value in the field normal.

Methods inherited from class ProxyInstance

equals, handle, hashCode

Methods inherited from class Object

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

Constructor Details

Plane

public Plane(MemorySegment address)

Create a Plane proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

Plane

public Plane(Arena arena)

Allocate a new Plane.

Parameters:

arena - to control the memory allocation scope

Plane

public Plane()

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

Plane

public Plane(Vec3 normal,
 float constant,
 Arena arena)

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

Parameters:

normal - value for the field normal

constant - value for the field constant

arena - to control the memory allocation scope

Plane

public Plane(Vec3 normal,
 float constant)

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

Parameters:

normal - value for the field normal

constant - value for the field constant

Method Details

getType

public static @Nullable Type getType()

Get the GType of the Plane class.

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

readNormal

public @Nullable Vec3 readNormal()

Read the value of the field normal.

Returns:

The value of the field normal

writeNormal

public void writeNormal(@Nullable Vec3 normal)

Write a value in the field normal.

Parameters:

normal - The new value for the field normal

readConstant

public float readConstant()

Read the value of the field constant.

Returns:

The value of the field constant

writeConstant

public void writeConstant(float constant)

Write a value in the field constant.

Parameters:

constant - The new value for the field constant

alloc

public static Plane alloc()

Allocates a new graphene_plane_t structure.

The contents of the returned structure are undefined.

Returns:

the newly allocated graphene_plane_t. Use graphene_plane_free() to free the resources allocated by this function

Since:

1.2

distance

public float distance(Point3D point)

Computes the distance of point from a graphene_plane_t.

Parameters:

point - a graphene_point3d_t

Returns:

the distance of the given graphene_point3d_t from the plane

Since:

1.2

equal

public boolean equal(Plane b)

Checks whether the two given graphene_plane_t are equal.

Parameters:

b - a graphene_plane_t

Returns:

true if the given planes are equal

Since:

1.2

free

public void free()

Frees the resources allocated by graphene_plane_alloc().

Since:

1.2

getConstant

public float getConstant()

Retrieves the distance along the normal vector of the given graphene_plane_t from the origin.

Returns:

the constant value of the plane

Since:

1.2

getNormal

public void getNormal(Vec3 normal)

Retrieves the normal vector pointing towards the origin of the given graphene_plane_t.

Parameters:

normal - return location for the normal vector

Since:

1.2

init

public Plane init(@Nullable Vec3 normal,
 float constant)

Initializes the given graphene_plane_t using the given normal vector and constant values.

Parameters:

normal - a unit length normal vector defining the plane pointing towards the origin; if unset, we use the X axis by default

constant - the distance from the origin to the plane along the normal vector; the sign determines the half-space occupied by the plane

Returns:

the initialized plane

Since:

1.2

initFromPlane

public Plane initFromPlane(Plane src)

Initializes the given graphene_plane_t using the normal vector and constant of another graphene_plane_t.

Parameters:

src - a graphene_plane_t

Returns:

the initialized plane

Since:

1.2

initFromPoint

public Plane initFromPoint(Vec3 normal,
 Point3D point)

Initializes the given graphene_plane_t using the given normal vector and an arbitrary co-planar point.

Parameters:

normal - a normal vector defining the plane pointing towards the origin

point - a graphene_point3d_t

Returns:

the initialized plane

Since:

1.2

initFromPoints

public Plane initFromPoints(Point3D a,
 Point3D b,
 Point3D c)

Initializes the given graphene_plane_t using the 3 provided co-planar points.

The winding order is counter-clockwise, and determines which direction the normal vector will point.

Parameters:

a - a graphene_point3d_t

b - a graphene_point3d_t

c - a graphene_point3d_t

Returns:

the initialized plane

Since:

1.2

initFromVec4

public Plane initFromVec4(Vec4 src)

Initializes the given graphene_plane_t using the components of the given graphene_vec4_t vector.

Parameters:

src - a graphene_vec4_t containing the normal vector in its first three components, and the distance in its fourth component

Returns:

the initialized plane

Since:

1.2

negate

public void negate(Plane res)

Negates the normal vector and constant of a graphene_plane_t, effectively mirroring the plane across the origin.

Parameters:

res - return location for the negated plane

Since:

1.2

normalize

public void normalize(Plane res)

Normalizes the vector of the given graphene_plane_t, and adjusts the constant accordingly.

Parameters:

res - return location for the normalized plane

Since:

1.2

transform

public void transform(Matrix matrix,
 @Nullable Matrix normalMatrix,
 Plane res)

Transforms a graphene_plane_t this Plane using the given matrix and normalMatrix.

If normalMatrix is null, a transformation matrix for the plane normal will be computed from matrix. If you are transforming multiple planes using the same matrix it's recommended to compute the normal matrix beforehand to avoid incurring in the cost of recomputing it every time.

Parameters:

matrix - a graphene_matrix_t

normalMatrix - a graphene_matrix_t

res - the transformed plane

Since:

1.10