TriangleMeshNode Class Reference

Node represented by a triangle. More...

Detailed Description

Node represented by a triangle.

Public Member Functions
	TriangleMeshNode (AstarPath astar)
override Vector3	ClosestPointOnNode (Vector3 p)
override Vector3	ClosestPointOnNodeXZ (Vector3 p)
override bool	ContainsPoint (Int3 p)
	Checks if p is inside the node in XZ space.
override void	DeserializeNode (GraphSerializationContext ctx)
override bool	GetPortal (GraphNode _other, System.Collections.Generic.List< Vector3 > left, System.Collections.Generic.List< Vector3 > right, bool backwards)
bool	GetPortal (GraphNode _other, System.Collections.Generic.List< Vector3 > left, System.Collections.Generic.List< Vector3 > right, bool backwards, out int aIndex, out int bIndex)
override Int3	GetVertex (int i)
int	GetVertexArrayIndex (int i)
	Return a number specifying an index in the source vertex array.
override int	GetVertexCount ()
int	GetVertexIndex (int i)
	Return a number identifying a vertex.
Int3	GetVertexInGraphSpace (int i)
void	GetVertices (out Int3 v0, out Int3 v1, out Int3 v2)
	Returns all 3 vertices of this node in world space.
override void	Open (Path path, PathNode pathNode, PathHandler handler)
	Open the node.
override Vector3	RandomPointOnSurface ()
	A random point on the surface of the node.
override void	SerializeNode (GraphSerializationContext ctx)
int	SharedEdge (GraphNode other)
	Returns the edge which is shared with other.
override float	SurfaceArea ()
	The surface area of the node in square world units.
void	UpdatePositionFromVertices ()
	Set the position of this node to the average of its 3 vertices.
override void	UpdateRecursiveG (Path path, PathNode pathNode, PathHandler handler)
Public Member Functions inherited from MeshNode
override void	AddConnection (GraphNode node, uint cost)
	Add a connection from this node to the specified node.
override void	ClearConnections (bool alsoReverse)
	Remove all connections from this node.
override bool	ContainsConnection (GraphNode node)
	Checks if this node has a connection to the specified node.
override void	DeserializeReferences (GraphSerializationContext ctx)
	Used to deserialize references to other nodes e.g connections.
override void	FloodFill (Stack< GraphNode > stack, uint region)
override void	GetConnections (System.Action< GraphNode > del)
	Calls the delegate with all connections from this node.
override int	GetGizmoHashCode ()
	Hash code used for checking if the gizmos need to be updated.
override void	RemoveConnection (GraphNode node)
	Removes any connection from this node to the specified node.
override void	SerializeReferences (GraphSerializationContext ctx)
	Used to serialize references to other nodes e.g connections.
Public Member Functions inherited from GraphNode
virtual bool	GetPortal (GraphNode other, List< Vector3 > left, List< Vector3 > right, bool backwards)
	Add a portal from this node to the specified node.
virtual void	RecalculateConnectionCosts ()
	Recalculates all connection costs from this node.
void	UpdateG (Path path, PathNode pathNode)

Static Public Member Functions
static INavmeshHolder	GetNavmeshHolder (uint graphIndex)
static void	SetNavmeshHolder (int graphIndex, INavmeshHolder graph)
	Sets the internal navmesh holder for a given graph index.

Public Attributes
int	v0
	Internal vertex index for the first vertex.
int	v1
	Internal vertex index for the second vertex.
int	v2
	Internal vertex index for the third vertex.
Public Attributes inherited from MeshNode
Connection[]	connections
	All connections from this node.
Public Attributes inherited from GraphNode
const uint	MaxAreaIndex = FlagsAreaMask >> FlagsAreaOffset
const uint	MaxGraphIndex = FlagsGraphMask >> FlagsGraphOffset
	Max number of graphs-1.
Int3	position
	Position of the node in world space.

Static Protected Attributes
static INavmeshHolder[]	_navmeshHolders = new INavmeshHolder[0]
	Holds INavmeshHolder references for all graph indices to be able to access them in a performant manner.
static readonly System.Object	lockObject = new System.Object()
	Used for synchronised access to the _navmeshHolders array.

Additional Inherited Members
Protected Member Functions inherited from MeshNode
	MeshNode (AstarPath astar)
Protected Attributes inherited from GraphNode
uint	flags
	Bitpacked field holding several pieces of data.
Package Functions inherited from GraphNode
void	Destroy ()
	Destroys the node.
Properties inherited from GraphNode
uint	Area [get, set]
bool	Destroyed [get]
uint	Flags [get, set]
	Holds various bitpacked variables.
uint	GraphIndex [get, set]
int	NodeIndex [get]
	Internal unique index.
uint	Penalty [get, set]
	Penalty cost for walking on this node.
uint	Tag [get, set]
bool	Walkable [get, set]
	True if the node is traversable.

Constructor & Destructor Documentation

TriangleMeshNode

(

AstarPath

astar

)

Member Function Documentation

override Vector3 ClosestPointOnNode ( Vector3  p )

virtual

Implements MeshNode.

override Vector3 ClosestPointOnNodeXZ ( Vector3  p )

virtual

Implements MeshNode.

override bool ContainsPoint ( Int3  p )

virtual

Checks if p is inside the node in XZ space.

The default implementation uses XZ space and is in large part got from the website linked below

Author

http://unifycommunity.com/wiki/index.php?title=PolyContainsPoint (Eric5h5)

The TriangleMeshNode overrides this and implements faster code for that case.

Reimplemented from MeshNode.

override void DeserializeNode ( GraphSerializationContext  ctx )

virtual

Reimplemented from GraphNode.

static INavmeshHolder GetNavmeshHolder ( uint  graphIndex )

static

override bool GetPortal	(	GraphNode	_other,
		System.Collections.Generic.List< Vector3 >	left,
		System.Collections.Generic.List< Vector3 >	right,
		bool	backwards
	)

bool GetPortal	(	GraphNode	_other,
		System.Collections.Generic.List< Vector3 >	left,
		System.Collections.Generic.List< Vector3 >	right,
		bool	backwards,
		out int	aIndex,
		out int	bIndex
	)

override Int3 GetVertex ( int  i )

virtual

Implements MeshNode.

int GetVertexArrayIndex

(

int

i

)

Return a number specifying an index in the source vertex array.

The vertex array can for example be contained in a recast tile, or be a navmesh graph, that is graph dependant. This is slower than GetVertexIndex, if you only need to compare vertices, use GetVertexIndex.

override int GetVertexCount ( )

virtual

Implements MeshNode.

int GetVertexIndex

(

int

i

)

Return a number identifying a vertex.

This number does not necessarily need to be a index in an array but two different vertices (in the same graph) should not have the same vertex numbers.

Int3 GetVertexInGraphSpace

(

int

i

)

void GetVertices	(	out Int3	v0,
		out Int3	v1,
		out Int3	v2
	)

Returns all 3 vertices of this node in world space.

override void Open ( Path  path, PathNode  pathNode, PathHandler  handler  )

virtual

Open the node.

Implements GraphNode.

override Vector3 RandomPointOnSurface ( )

virtual

A random point on the surface of the node.

For point nodes and other nodes which do not have a surface, this will always return the position of the node.

Reimplemented from GraphNode.

override void SerializeNode ( GraphSerializationContext  ctx )

virtual

Reimplemented from GraphNode.

static void SetNavmeshHolder ( int  graphIndex, INavmeshHolder  graph  )

static

Sets the internal navmesh holder for a given graph index.

Warning

Internal method

int SharedEdge

(

GraphNode

other

)

Returns the edge which is shared with other.

If no edge is shared, -1 is returned. The edge is GetVertex(result) - GetVertex((result+1) % GetVertexCount()). See GetPortal for the exact segment shared.

Note

Might return that an edge is shared when the two nodes are in different tiles and adjacent on the XZ plane, but do not line up perfectly on the Y-axis. Therefore it is recommended that you only test for neighbours of this node or do additional checking afterwards.

override float SurfaceArea ( )

virtual

The surface area of the node in square world units.

Reimplemented from GraphNode.

void UpdatePositionFromVertices

(

)

Set the position of this node to the average of its 3 vertices.

override void UpdateRecursiveG ( Path  path, PathNode  pathNode, PathHandler  handler  )

virtual

Reimplemented from MeshNode.

Member Data Documentation

INavmeshHolder [] _navmeshHolders = new INavmeshHolder[0]

staticprotected

Holds INavmeshHolder references for all graph indices to be able to access them in a performant manner.

readonly System.Object lockObject = new System.Object()

staticprotected

Used for synchronised access to the _navmeshHolders array.

int v0

Internal vertex index for the first vertex.

int v1

Internal vertex index for the second vertex.

int v2

Internal vertex index for the third vertex.

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The documentation for this class was generated from the following file:

• /Users/arong/Unity/a-pathfinding-project/Assets/AstarPathfindingProject/Generators/NodeClasses/TriangleMeshNode.cs