Taxonomy Categories:
Member Functions:
Interface Category:
API.
Inherits From:
TAttribute3DState
Inherited By:
None.
Purpose:
A bundle is a collection of attributes that contain imaging information for the rendering device. For instance, a 3-D bundle contains a TColor that describes the base color of a surface, as well as a TShader that describes how this color is altered by conditions such as reflected light or a texture map. A TGrafBundle3D collects together the attributes needed to render a particular 3-D graphic object, just as a TGrafBundle is used for 2-D. The MGraphic3D class associates a TGrafBundle3D with a 3-D geometry, in order to define the attributes needed for rendering the geometry--color, texture map, and so on. A descendant of MGraphic3D can adopt a TGrafBundle3D, reserving the bundle for its exclusive use until it orphans it. An MGraphic3D has only one bundle, and only one MGraphic3D can have the same bundle. However, a TGrafBundle3D is not always encapsulated in an MGraphic3D--TGrafPort uses a bundle directly to render a geometry.
The standard attributes contained in a 3-D bundle include the frame pen, inside and outside colors, inside and outside shaders, and texture map transformation matrix. Each of these standard attributes is described by a corresponding class--TShader, TColor, TPen, and TGrafMatrix. The frame pen determines how the object's wire frame is drawn (hairline by default). The inside and outside color attributes determine the object's base color--the color of the surface before any effects are applied by the shaders. A right-hand rule is applied to determine which surface is inside and which is outside. The inside and outside surfaces have separate shaders. These shaders calculate the final color at every location on the surface, taking into account the lighting, the camera position, and the type of shader. For example, a highly reflective surface whose base color is red can actually appear whitish at the location where a light source is directly reflected. Finally, the texture map transformation matrix attribute specifies a TGrafMatrix that is used to map a 2-D texture to the object's surface. (The texture itself, if any, is specified by the shader attribute.)
TGrafBundle3D, derived from TAttribute3DState, supplies explicit member functions to retrieve, adopt, and orphan most of its standard attributes. However, some standard attributes do not have corresponding adopt and orphan member functions. These attributes include the drawing operation, shading resolution, shading interpolation, and backface culling. The drawing operation is either kFrame, which draws the geometry as a wire frame; kFill, which means that the bundle attributes are used to color the surfaces; or kFillAndFrame, which draws both the wire frame and the surfaces. The shading quality specifies how frequently the shader calculates a resultant color--a value of kBest means a color is computed for every pixel, a value of kMedium means the calculation is done only for every vertex, and a value of kFast results in color computation only occurring once per polygon. The shading interpolation determines what happens to the pixels in between. If the interpolation is kFlat, the intermediary pixels have the same color as the most recently shaded pixel, whereas if the interpolation is kSmooth, the intermediary pixels have interpolated colors. If backface culling is turned on (as it is by default), the shading and rendering operations ignore any surface that faces away from the camera, making it invisible.
As with 2-D bundles, you can add arbitrary attributes by creating your own TGrafAttribute derived classes (although the rendering device might not be able to do anything with these attributes). These nonstandard attributes are referred to as extended attributes. You add them to the bundle with TGrafBundle3D::AdoptGrafAttribute, access them by name with TGrafBundle3D::GetGrafAttribute, and orphan them by name with TGrafBundle3D::OrphanGrafAttribute. To iterate through the extended attributes, use a TGrafBundleIterator3D object, which you access with TGrafBundle3D::CreateBundleIterator.
Instantiation:
Allocate on the heap or the stack.
Deriving Classes:
None.
Concurrency:
Not multithread safe.
Resource Use:
No special requirements.
- TGrafBundle3D ()
- TGrafBundle3D (TColor * adoptOutsideColor, TAttributeState :: EDrawOperation =TAttributeState :: kFrame)
- TGrafBundle3D (const TAttribute3DState & state)
- TGrafBundle3D (const TGrafBundle3D &)
Interface Category:
API.
Purpose:
- Default constructor.
- Constructor used to set the standard 3-D graphics bundle attributes: the outside color and the drawing operation (frame, fill, or frame and fill).
- Constructor used to create a new object, given an object of the parent class.
- Copy constructor.
Calling Context:
- Called by the stream-in operators. You can also call this constructor directly. The members of the bundle default to their unset condition.
- Call this function directly.
- Call this function directly.
- Called to copy an object.
Parameters:
- Takes no parameters.
- TColor * adoptOutsideColor -The base color of the outside of the graphic.
- TAttributeState :: EDrawOperation =TAttributeState :: kFrame -The type of drawing operation to use. The default is to draw a wire frame (kFrame), but other values include kFill or kFillAndFrame.
- const TAttribute3DState & state -The object of the parent class to be used to initialize the new object.
- const TGrafBundle3D & -The object to copy.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
virtual ~ TGrafBundle3D ()
Interface Category:
API.
Purpose:
Destructor.
Calling Context:
Called to destroy an object.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::SetDrawingOperation
virtual void SetDrawingOperation (TAttributeState :: EDrawOperation operation)
Interface Category:
API.
Purpose:
Sets the type of drawing operation held by this bundle. The options are kFrame (the default, used to draw a wire-frame model of the graphic), kFill (used to draw a filled-surface model of the graphic), and kFillAndFrame (used to draw both a wire-frame and a filled-surface model of the graphic).
Calling Context:
Call this function directly.
Parameters:
- TAttributeState :: EDrawOperation operation -The type of drawing operation to use: kFill, kFrame, or kFillAndFrame.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::SetBackfaceCulling
virtual void SetBackfaceCulling ( TAttribute3DState :: EBackfaceCulling isOn)
Interface Category:
API.
Purpose:
Sets the value of the backface culling mode. If backface culling is enabled, the regions of the graphic that are not visible to the camera will not be rendered. This saves time when rendering complex graphics.
Calling Context:
Call this function directly.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::SetShadingInterpolation
virtual void SetShadingInterpolation (TAttribute3DState :: EShadingInterpolationMode interpolation)
Interface Category:
API.
Purpose:
Sets the value of the shading interpolation mode. If shading interpolation is set to flat (kFlat) the color of unshaded pixels is the same as the most recently shaded pixel. If the shading interpolation is set to smooth (kColorSmooth) the color of unshaded pixels is determined by interpolating the color of the previously shaded pixel and the pixel to be shaded next. Smooth interpolation gives a better looking image, but takes longer to render.
Calling Context:
Call this function directly.
Parameters:
- TAttribute3DState :: EShadingInterpolationMode interpolation -The interpolation mode to be used by the shader: kFlat or kSmooth.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::SetShadingQuality
virtual void SetShadingQuality (TAttribute3DState :: EShadingQuality shadingQuality)
Interface Category:
API.
Purpose:
Sets the shading quality for the graphics bundle. If the shading quality is set to fast (kFast), the shading is performed only at the polygon level. If the quality is set to medium (kMedium), the shading is performed at the vertex level. The best (kBest) method performs shading calculations on a pixel-by-pixel basis, but requires much greater processing time.
Calling Context:
Call this function directly.
Parameters:
- TAttribute3DState :: EShadingQuality shadingQuality -The shading quality to set the shader to.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptFramePen
virtual void AdoptFramePen (TPen * pen)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TPen, which is used for drawing the wire frame. The old pen held by the bundle is deleted.
Calling Context:
Call this function directly.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptOutsideShader
virtual void AdoptOutsideShader (TShader * outsideShader)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TShader, which is used for shading the outside surface. The old outside shader held by the bundle is deleted.
Calling Context:
Call this function directly.
Parameters:
- TShader * outsideShader -The shader to adopt as the outside shader.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptInsideShader
virtual void AdoptInsideShader (TShader * insideShader)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TShader, which is used for shading the inside surface. The old inside shader held by the bundle is deleted.
Calling Context:
Call this function directly.
Parameters:
- TShader * insideShader -The shader to adopt as the inside shader.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptOutsideColor
virtual void AdoptOutsideColor (TColor * baseColor)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TColor, which is used as the base color for the outside surface. This color is also applied to the wire frame, for path geometries (such as lines and polylines) as well as for surface geometries. The old outside color held by the bundle is deleted.
Calling Context:
Call this function directly.
Parameters:
- TColor * baseColor -The color to adopt as the base color for the outside color.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptInsideColor
virtual void AdoptInsideColor (TColor * baseColor)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TColor, which is used as the base color for the inside surface. The old inside color held by the bundle is deleted.
Calling Context:
Call this function directly.
Parameters:
- TColor * baseColor -The color to adopt as the base color for the inside color.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptTextureMappingMatrix
virtual void AdoptTextureMappingMatrix (TGrafMatrix * matrix)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TGrafMatrix, which is used to map a 2-D texture to the surface. The old texture mapping matrix held by the bundle is deleted.
Calling Context:
Call this function directly.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptGrafAttribute
virtual void AdoptGrafAttribute (TGrafAttribute *)
Interface Category:
API.
Purpose:
Assumes ownership of the specified TGrafAttribute (an extended attribute). Extended attributes are derived classes of TGrafAttribute that you create to handle special attributes of graphics. This TGrafAttribute is added to the list of extended attributes maintained by the bundle.
Calling Context:
Call this function directly.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetOutsideShader
virtual const TShader * GetOutsideShader () const
Interface Category:
API.
Purpose:
Returns a constant pointer to the TShader used for shading the outside surface.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A const pointer to the TShader used by the bundle as the outside shader.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetInsideShader
virtual const TShader * GetInsideShader () const
Interface Category:
API.
Purpose:
Returns a constant pointer to the TShader used for shading the inside surface.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A constant pointer to the TShader used by the bundle as the outside shader.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetOutsideColor
virtual const TColor * GetOutsideColor () const
Interface Category:
API.
Purpose:
Returns a constant pointer to the TColor used as the base color for the outside surface and the wire frame.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A constant pointer to the TColor used as the outside base color.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetInsideColor
virtual const TColor * GetInsideColor () const
Interface Category:
API.
Purpose:
Returns a constant pointer to the TColor used as the base color for the inside surface.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A constant pointer to the TColor used as the inside base color.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetTextureMappingMatrix
virtual const TGrafMatrix * GetTextureMappingMatrix () const
Interface Category:
API.
Purpose:
Returns a constant pointer to the TGrafMatrix used to map a 2-D texture to the surface.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A constant pointer to the TGrafMatrix used to map a 2-D texture to the surface.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetFramePen
virtual const TPen * GetFramePen () const
Interface Category:
API.
Purpose:
Returns a constant pointer to the TPen that determines the wire frame's pen style (such as hairline or dashed).
Calling Context:
Call this function directly.
Parameters:
Return Value:
A constant pointer to the TPen used as the frame pen by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetShadingInterpolation
virtual TAttribute3DState::EShadingInterpolationMode GetShadingInterpolation () const
Interface Category:
API.
Purpose:
Returns kFlat if unshaded pixel have the same color as the most recently shaded pixel; kColorSmooth if unshaded pixels have interpolated colors; or NIL if interpolation has not been set.
Calling Context:
Call this function directly.
Parameters:
Return Value:
The EShadingInterpolationMode value of the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetDrawingOperation
virtual TAttributeState::EDrawOperation GetDrawingOperation() const
Interface Category:
API.
Purpose:
Returns the EDrawOperation that determines whether to paint the fill, the frame, or both.
Calling Context:
Call this function directly.
Parameters:
Return Value:
The EDrawingOperation value of the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetShadingQuality
virtual TAttribute3DState :: EShadingQuality GetShadingQuality () const
Interface Category:
API.
Purpose:
Returns the quality level of the shading calculation, or kShadingQualityUnset if it has not been set.
Calling Context:
Call this function directly.
Parameters:
Return Value:
The EShadingQuality value of the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetBackfaceCulling
virtual TAttribute3DState :: EBackfaceCulling GetBackfaceCulling () const
Interface Category:
API.
Purpose:
Returns the enumeration tag that specifies whether the shading and rendering operations should ignore any surface that faces away from the camera. Returns kCullingUnset if backface culling has not been set.
Calling Context:
Call this function directly.
Parameters:
Return Value:
Returns kCullingOn if backface culling is turned on.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetGrafAttribute
virtual const TGrafAttribute * GetGrafAttribute (const TToken & key) const
Interface Category:
API.
Purpose:
Gets the specified user-defined attribute . Returns NIL if the attribute specified by the name is not found.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A constant pointer to the TGrafAttribute derived class with the given name.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanOutsideShader
virtual TShader * OrphanOutsideShader ()
Interface Category:
API.
Purpose:
Relinquishes ownership of the TShader used for the outside surface, returning a pointer to the TShader. The outside TShader of the bundle is set to NIL.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to a TShader that represents the outside shader previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanInsideShader
virtual TShader * OrphanInsideShader ()
Interface Category:
API.
Purpose:
Relinquishes ownership of the TShader used for the inside surface, returning a pointer to the TShader. The outside TShader of the bundle is set to NIL.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to a TShader that represents the inside shader previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanOutsideColor
virtual TColor * OrphanOutsideColor ()
Interface Category:
API.
Purpose:
Relinquishes ownership of the TColor used for the outside surface and wire frame, returning a pointer to it. The outside TColor of the bundle is set to NIL.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to a TColor that represents the outside color previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanInsideColor
virtual TColor * OrphanInsideColor ()
Interface Category:
API.
Purpose:
Relinquishes ownership of the TColor used for the inside surface, returning a pointer to it. The inside TColor of the bundle is set to NIL.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to a TColor that represents the outside color previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanFramePen
virtual TPen * OrphanFramePen ()
Interface Category:
API.
Purpose:
Relinquishes ownership of the
TPen used for frames, returning a pointer to it. The frame TPen of the bundle is set to NIL.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to a TPen that represents the frame pen previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanTextureMappingMatrix
virtual TGrafMatrix * OrphanTextureMappingMatrix ()
Interface Category:
API.
Purpose:
Relinquishes ownership of the TGrafMatrix used to map a 2-D texture to the surface, returning a pointer to the TGrafMatrix. The texture map TGrafMatrix of the bundle is set to NIL.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to the TGrafMatrix that represents the 2-D texture map previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanGrafAttribute
virtual TGrafAttribute * OrphanGrafAttribute (const TToken & key)
Interface Category:
API.
Purpose:
Relinquishes ownership of the named TGrafAttribute, returning a pointer to it. The named extended attribute is removed from the bundle's internal list of extended attributes.
Calling Context:
Call this function directly.
Parameters:
- const TToken & key -The name of the extended attribute to orphan.
Return Value:
A pointer to the named TGrafAttribute object that was previously owned by the bundle.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::CreateBundleIterator
virtual TGrafBundleIterator3D * CreateBundleIterator ()
Interface Category:
API.
Purpose:
Creates an iterator that accesses the bundle's extended attributes (but not the standard attributes, which are accessed by their own TGrafBundle3D member functions). You are responsible for deleting this iterator after you are done with it.
Calling Context:
Call this function directly.
Parameters:
Return Value:
A pointer to a TGrafBundleIterator3D.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::operator=
TGrafBundle3D & operator =(const TGrafBundle3D & source)
Interface Category:
API.
Purpose:
Assignment operator.
Calling Context:
Call this function by using the operator in an assignment statement.
Parameters:
Return Value:
A non-const reference to the left-hand side object.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::operator>>=
virtual TStream & operator >>=(TStream &) const
Interface Category:
API.
Purpose:
Stream-out operator.
Calling Context:
Called to stream out data.
Parameters:
- TStream & -The stream that the object streams itself out to.
Return Value:
Returns a reference to the stream the object streams itself out to.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::operator<<=
virtual TStream & operator <<= (TStream &)
Interface Category:
API.
Purpose:
Stream-in operator.
Calling Context:
Called to stream in data.
Parameters:
- TStream & -The stream that the object streams itself in from.
Return Value:
Returns a reference to the stream the object streams itself in from.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::OrphanPrimaryDitherHint
virtual TDitherHint * OrphanPrimaryDitherHint ()
Interface Category:
API.
Purpose:
This causes the graphics bundle to orphan its primary dither hint. This is the object used to suggest what form of dithering to use (if the display platform is capable of performing it).
Calling Context:
Call this function directly.
Parameters:
Return Value:
Returns a pointer to the newly-orphaned TDitherHint. If there is no dither hint defined, a NIL pointer is returned.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::GetPrimaryDitherHint
virtual const TDitherHint * GetPrimaryDitherHint () const
Interface Category:
API.
Purpose:
Returns a pointer to the current dither hint for this graphics bundle.
Calling Context:
Call this function directly.
Parameters:
Return Value:
Returns the pointer to this graphics bundle's primary dither hint.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TGrafBundle3D::AdoptPrimaryDitherHint
virtual void AdoptPrimaryDitherHint (TDitherHint * ditherHint)
Interface Category:
API.
Purpose:
Allows for the adoption of a dither hint object. If a primary dither hint is already associated with this graphics bundle, the old dither hint is deleted and replaced by the new hint.
Calling Context:
Call this function directly.
Parameters:
- TDitherHint * ditherHint -The dither hint to be adopted.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
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