Index Stream Class

The base class for DirectContext3D index streams, which are used to write vertex indices into buffers.

Inheritance Hierarchy

Namespace: Autodesk.Revit.DB.DirectContext3D
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public class IndexStream : IDisposable

Public Class IndexStream
	Implements IDisposable

public ref class IndexStream : IDisposable

type IndexStream = 
    class
        interface IDisposable
    end

The IndexStream type exposes the following members.

Properties

	Name	Description
	IsValidObject	Specifies whether the .NET object represents a valid Revit entity.

Methods

	Name	Description
	Dispose	Releases all resources used by the IndexStream
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object )
	GetHashCode	Serves as the default hash function. (Inherited from Object )
	GetType	Gets the Type of the current instance. (Inherited from Object )
	ToString	Returns a string that represents the current object. (Inherited from Object )

Remarks

This base class cannot be used directly. Instead, a steam that is specific for each type of primitive (point, line, or triangle) must be used.

The process of putting vertex indices into a buffer involves using a stream-buffer pair as follows:

Map the index buffer (see IndexBuffer ).
Get a stream for the appropriate primitive type from the buffer.
Add sequences of indices corresponding to primitives of the same type to the stream. The indices will be written into the buffer that was used to create the stream.
Unmap the buffer.

As an alternative to using streams, it is possible to write data into a buffer using a handle to its mapped memory.