BaseMesh.GenerateAdjacency Method

Article
10/15/2009

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Generates adjacency information based on mesh indices.

Namespace: Microsoft.WindowsMobile.DirectX.Direct3D
Assembly: Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)

Syntax

'Declaration
Public Sub GenerateAdjacency ( _
    epsilon As Single, _
    adjacency As Integer() _
)
'Usage
Dim instance As BaseMesh
Dim epsilon As Single
Dim adjacency As Integer()

instance.GenerateAdjacency(epsilon, adjacency)

public void GenerateAdjacency(
    float epsilon,
    int[] adjacency
)

public:
void GenerateAdjacency(
    float epsilon, 
    array<int>^ adjacency
)

member GenerateAdjacency : 
        epsilon:float32 * 
        adjacency:int[] -> unit

Parameters

epsilon
Type: System.Single
Specifies that vertices that differ in position by less than a small amount (the epsilon value) should be treated as coincident.

adjacency
Type: array<System.Int32[]
Array of three integer values per face to be filled with adjacent face indices. The size of this array must be at least 3 * NumberFaces.

Exceptions

Exception	Condition
InvalidCallException	The call is invalid, such as an invalid method parameter.
OutOfMemoryException	Insufficient memory to complete the call.

Remarks

The GenerateAdjacency method determines which patches are adjacent and within the provided tolerance. Direct3D uses this information internally to optimize tessellation.

A patch is a mathematically defined 3-D surface, typically defined by splines, that is used to create a 3-D model. Tessellation is subdividing geometry into tiles, usually involving subdividing mesh faces into triangles.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Platforms

Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Compact Framework

Supported in: 3.5, 2.0