org.bytedeco.liquidfun

Class b2ChainShape

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.liquidfun.b2Shape

org.bytedeco.liquidfun.b2ChainShape

All Implemented Interfaces:

AutoCloseable

@NoOffset
 @Properties(inherit=liquidfun.class)
public class b2ChainShape
extends b2Shape

A chain shape is a free form sequence of line segments. The chain has two-sided collision, so you can use inside and outside collision. Therefore, you may use any winding order. Since there may be many vertices, they are allocated using b2Alloc. Connectivity information is used to create smooth collisions. WARNING: The chain will not collide properly if there are self-intersections.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.liquidfun.b2Shape

e_chain, e_circle, e_edge, e_polygon, e_typeCount

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
b2ChainShape()
b2ChainShape(long size) Native array allocator.
b2ChainShape(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
b2Shape	Clone(b2BlockAllocator allocator) Implement b2Shape.
void	ComputeAABB(b2AABB aabb, b2Transform transform, int childIndex) Given a transform, compute the associated axis aligned bounding box for a child shape.
void	ComputeDistance(b2Transform xf, b2Vec2 p, float[] distance, b2Vec2 normal, int childIndex)
void	ComputeDistance(b2Transform xf, b2Vec2 p, FloatBuffer distance, b2Vec2 normal, int childIndex)
void	ComputeDistance(b2Transform xf, b2Vec2 p, FloatPointer distance, b2Vec2 normal, int childIndex) Compute the distance from the current shape to the specified point.
void	ComputeMass(b2MassData massData, float density) Chains have zero mass.
void	CreateChain(b2Vec2 vertices, int count) Create a chain with isolated end vertices.
void	CreateLoop(b2Vec2 vertices, int count) Create a loop.
int	GetChildCount() Get the number of child primitives.
void	GetChildEdge(b2EdgeShape edge, int index) Get a child edge.
int	m_count() The vertex count.
b2ChainShape	m_count(int setter)
boolean	m_hasNextVertex()
b2ChainShape	m_hasNextVertex(boolean setter)
boolean	m_hasPrevVertex()
b2ChainShape	m_hasPrevVertex(boolean setter)
b2Vec2	m_nextVertex()
b2ChainShape	m_nextVertex(b2Vec2 setter)
b2Vec2	m_prevVertex()
b2ChainShape	m_prevVertex(b2Vec2 setter)
b2Vec2	m_vertices() The vertices.
b2ChainShape	m_vertices(b2Vec2 setter)
b2ChainShape	position(long position)
boolean	RayCast(b2RayCastOutput output, b2RayCastInput input, b2Transform transform, int childIndex) Implement b2Shape.
void	SetNextVertex(b2Vec2 nextVertex) Establish connectivity to a vertex that follows the last vertex.
void	SetPrevVertex(b2Vec2 prevVertex) Establish connectivity to a vertex that precedes the first vertex.
boolean	TestPoint(b2Transform transform, b2Vec2 p) This always return false.

Methods inherited from class org.bytedeco.liquidfun.b2Shape

GetType, m_radius, m_radius, m_type, m_type

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

b2ChainShape

public b2ChainShape(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

b2ChainShape

public b2ChainShape(long size)

Native array allocator. Access with Pointer.position(long).

b2ChainShape

public b2ChainShape()

Method Detail

position

public b2ChainShape position(long position)

Overrides:

position in class Pointer

CreateLoop

public void CreateLoop(@Const
                       b2Vec2 vertices,
                       @Cast(value="int32")
                       int count)

Create a loop. This automatically adjusts connectivity.

Parameters:

vertices - an array of vertices, these are copied

count - the vertex count

CreateChain

public void CreateChain(@Const
                        b2Vec2 vertices,
                        @Cast(value="int32")
                        int count)

Create a chain with isolated end vertices.

Parameters:

vertices - an array of vertices, these are copied

count - the vertex count

SetPrevVertex

public void SetPrevVertex(@Const @ByRef
                          b2Vec2 prevVertex)

Establish connectivity to a vertex that precedes the first vertex. Don't call this for loops.

SetNextVertex

public void SetNextVertex(@Const @ByRef
                          b2Vec2 nextVertex)

Establish connectivity to a vertex that follows the last vertex. Don't call this for loops.

Clone

public b2Shape Clone(b2BlockAllocator allocator)

Implement b2Shape. Vertices are cloned using b2Alloc.

Overrides:

Clone in class b2Shape

GetChildCount

@Cast(value="int32")
public int GetChildCount()

Description copied from class: b2Shape

Get the number of child primitives.

Overrides:

GetChildCount in class b2Shape

See Also:

b2Shape::GetChildCount

GetChildEdge

public void GetChildEdge(b2EdgeShape edge,
                         @Cast(value="int32")
                         int index)

Get a child edge.

TestPoint

@Cast(value="bool")
public boolean TestPoint(@Const @ByRef
                                             b2Transform transform,
                                             @Const @ByRef
                                             b2Vec2 p)

This always return false.

Overrides:

TestPoint in class b2Shape

Parameters:

transform - the shape world transform.

p - a point in world coordinates.

See Also:

b2Shape::TestPoint

ComputeDistance

public void ComputeDistance(@Const @ByRef
                            b2Transform xf,
                            @Const @ByRef
                            b2Vec2 p,
                            @Cast(value="float32*")
                            FloatPointer distance,
                            b2Vec2 normal,
                            @Cast(value="int32")
                            int childIndex)

Description copied from class: b2Shape

Compute the distance from the current shape to the specified point. This only works for convex shapes.

Overrides:

ComputeDistance in class b2Shape

Parameters:

xf - the shape world transform.

p - a point in world coordinates.

distance - returns the distance from the current shape.

normal - returns the direction in which the distance increases.

ComputeDistance

public void ComputeDistance(@Const @ByRef
                            b2Transform xf,
                            @Const @ByRef
                            b2Vec2 p,
                            @Cast(value="float32*")
                            FloatBuffer distance,
                            b2Vec2 normal,
                            @Cast(value="int32")
                            int childIndex)

Overrides:

ComputeDistance in class b2Shape

ComputeDistance

public void ComputeDistance(@Const @ByRef
                            b2Transform xf,
                            @Const @ByRef
                            b2Vec2 p,
                            @Cast(value="float32*")
                            float[] distance,
                            b2Vec2 normal,
                            @Cast(value="int32")
                            int childIndex)

Overrides:

ComputeDistance in class b2Shape

RayCast

@Cast(value="bool")
public boolean RayCast(b2RayCastOutput output,
                                           @Const @ByRef
                                           b2RayCastInput input,
                                           @Const @ByRef
                                           b2Transform transform,
                                           @Cast(value="int32")
                                           int childIndex)

Implement b2Shape.

Overrides:

RayCast in class b2Shape

Parameters:

output - the ray-cast results.

input - the ray-cast input parameters.

transform - the transform to be applied to the shape.

childIndex - the child shape index

ComputeAABB

public void ComputeAABB(b2AABB aabb,
                        @Const @ByRef
                        b2Transform transform,
                        @Cast(value="int32")
                        int childIndex)

Description copied from class: b2Shape

Given a transform, compute the associated axis aligned bounding box for a child shape.

Overrides:

ComputeAABB in class b2Shape

Parameters:

aabb - returns the axis aligned box.

transform - the world transform of the shape.

childIndex - the child shape

See Also:

b2Shape::ComputeAABB

ComputeMass

public void ComputeMass(b2MassData massData,
                        @Cast(value="float32")
                        float density)

Chains have zero mass.

Overrides:

ComputeMass in class b2Shape

Parameters:

massData - returns the mass data for this shape.

density - the density in kilograms per meter squared.

See Also:

b2Shape::ComputeMass

m_vertices

public b2Vec2 m_vertices()

The vertices. Owned by this class.

m_vertices

public b2ChainShape m_vertices(b2Vec2 setter)

m_count

@Cast(value="int32")
public int m_count()

The vertex count.

m_count

public b2ChainShape m_count(int setter)

m_prevVertex

@ByRef
public b2Vec2 m_prevVertex()

m_prevVertex

public b2ChainShape m_prevVertex(b2Vec2 setter)

m_nextVertex

@ByRef
public b2Vec2 m_nextVertex()

m_nextVertex

public b2ChainShape m_nextVertex(b2Vec2 setter)

m_hasPrevVertex

@Cast(value="bool")
public boolean m_hasPrevVertex()

m_hasPrevVertex

public b2ChainShape m_hasPrevVertex(boolean setter)

m_hasNextVertex

@Cast(value="bool")
public boolean m_hasNextVertex()

m_hasNextVertex

public b2ChainShape m_hasNextVertex(boolean setter)