IndexStream
The base class for DirectContext3D index streams, which are used to write vertex indices into buffers.
Inheritance Hierarchy
System.Object
Autodesk.Revit.DB.DirectContext3D.IndexStream
Autodesk.Revit.DB.DirectContext3D.IndexStreamLine
Autodesk.Revit.DB.DirectContext3D.IndexStreamPoint
Autodesk.Revit.DB.DirectContext3D.IndexStreamTriangle
Namespace: Autodesk.Revit.DB.DirectContext3D
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
public class IndexStream : IDisposableThe IndexStream type exposes the following members.
Properties
Name
Description
Public Property
IsValidObject
Specifies whether the .NET object represents a valid Revit entity.
Methods
Name
Description
Public Method
Dispose
Releases all resources used by the IndexStream
Public Method
Equals
Determines whether the specified object is equal to the current object.
(Inherited from Object)
Public Method
GetHashCode
Serves as the default hash function.
(Inherited from Object)
Public Method
GetType
Gets the Type of the current instance.
(Inherited from Object)
Public Method
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.
- Use IndexStreamPoint to insert IndexPoint instances.
- Use IndexStreamLine to insert IndexLine instances.
- Use IndexStreamTriangle to insert IndexTriangle instances.
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.