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SoDataCompositor Class

Data set compositor node.

Inheritance Hierarchy

Namespace: OIV.LDM.Nodes
Assembly: OIV.LDM (in OIV.LDM.dll) Version: 10.12.3.0 (10.12.3.0)
Syntax
public class SoDataCompositor : SoNode

The SoDataCompositor type exposes the following members.

Constructors
  NameDescription
Public methodSoDataCompositor

Constructor .

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Methods
  NameDescription
Public methodAffectsState

Returns true if a node has an effect on the state during traversal.

(Inherited from SoNode.)
Public methodCallback
Public methodCompose(Int32, SbVec3i32, Int32, SoBufferObject, SoBufferObject)

The compose method can be overridden in a subclass to specify a custom composition.

Public methodCompose(Int32, SbVec3i32, Int32, SoBufferObject, SoDataCompositorDataTypes, SoBufferObject)

Same as the compose method described above with one additional parameter: dataTypes is an array of SoDataSet.dataType giving the data type of each input buffer (e.g., inputBuffer[0] is of data type dataTypes[0]).

Public methodCopy
Calls Copy(false).
(Inherited from SoNode.)
Public methodCopy(Boolean)

Creates and returns an exact copy of the node.

(Inherited from SoNode.)
Public methodCopyFieldValues(SoFieldContainer)
Calls CopyFieldValues(fc, false).
(Inherited from SoFieldContainer.)
Public methodCopyFieldValues(SoFieldContainer, Boolean)

Copies the contents of fc's fields into this object's fields.

(Inherited from SoFieldContainer.)
Public methodDispose
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.)
Public methodDistribute
(Inherited from SoNode.)
Public methodDoAction
Public methodEnableNotify

Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false).

(Inherited from SoFieldContainer.)
Public methodEquals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
Public methodFieldsAreEqual

Returns true if this object's fields are exactly equal to fc's fields.

(Inherited from SoFieldContainer.)
Public methodGet

Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string.

(Inherited from SoFieldContainer.)
Public methodGetAllFields

Returns a list of fields, including the eventIn's and eventOut's.

(Inherited from SoFieldContainer.)
Public methodGetAlternateRep

This method is called by actions to allow the node to provide an "alternate representation" when appropriate (typically depending on the action type).

(Inherited from SoNode.)
Public methodGetBoundingBox
Public methodGetDataSize

Returns number of bytes for output datum.

Public methodGetDataType

Returns the output data type.

Public methodGetEventIn

Returns a the eventIn with the given name.

(Inherited from SoFieldContainer.)
Public methodGetEventOut

Returns the eventOut with the given name.

(Inherited from SoFieldContainer.)
Public methodGetField

Returns a the field of this object whose name is fieldName.

(Inherited from SoFieldContainer.)
Public methodGetFieldName

Returns the name of the given field in the fieldName argument.

(Inherited from SoFieldContainer.)
Public methodGetFields

Appends references to all of this object's fields to resultList, and returns the number of fields appended.

(Inherited from SoFieldContainer.)
Public methodGetHashCode
Overrides GetHashCode().
(Inherited from SoNetBase.)
Public methodGetMatrix
(Inherited from SoNode.)
Public methodGetName

Returns the name of an instance.

(Inherited from SoBase.)
Public methodGetNumSigBits

Returns the output number of significant bits.

Public methodGetPrimitiveCount
(Inherited from SoNode.)
Public methodGetRenderEngineMode

Returns the supported Render engine mode.

(Inherited from SoNode.)
Public methodGetRenderUnitID
(Inherited from SoNode.)
Public methodGetStringName (Inherited from SoBase.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodGLRender
Public methodGLRenderBelowPath
(Inherited from SoNode.)
Public methodGLRenderInPath
(Inherited from SoNode.)
Public methodGLRenderOffPath
(Inherited from SoNode.)
Public methodGrabEventsCleanup
(Inherited from SoNode.)
Public methodGrabEventsSetup
(Inherited from SoNode.)
Public methodHandleEvent
(Inherited from SoNode.)
Public methodHasDefaultValues

Returns true if all of the object's fields have their default values.

(Inherited from SoFieldContainer.)
Public methodIsBoundingBoxIgnoring

This method is used by getBoundingBox action traversal to know if the current node must be traversed or not, ie the bounding should be ignored.

(Inherited from SoNode.)
Public methodStatic memberIsDataSigned

Returns true if the given data type is a signed integer data type.

Public methodIsNotifyEnabled

Notification is the process of telling interested objects that this object has changed.

(Inherited from SoFieldContainer.)
Public methodIsOverride

Returns the state of the override flag.

(Inherited from SoNode.)
Public methodIsSynchronizable

Gets the ScaleViz synchronizable state of this object.

(Inherited from SoBase.)
Public methodPick
Public methodRayPick
(Inherited from SoNode.)
Public methodSearch
(Inherited from SoNode.)
Public methodSet

Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.

(Inherited from SoFieldContainer.)
Public methodSetName (Inherited from SoBase.)
Public methodSetOverride

Turns the override flag on or off.

(Inherited from SoNode.)
Public methodSetSynchronizable

Sets this to be a ScaleViz synchronizable object.

(Inherited from SoBase.)
Public methodSetToDefaults

Sets all fields in this object to their default values.

(Inherited from SoFieldContainer.)
Public methodToString
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.)
Public methodTouch

Marks an instance as modified, simulating a change to it.

(Inherited from SoNode.)
Public methodWrite
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Properties
  NameDescription
Public propertyconvert

If the convert field is true, LDM will call the compose method after automatically converting data to the final data type if necessary.

Public propertydataType

Data type of the final composed buffer.

Public propertyIsDisposable
ISafeDisposable interface implementation.
(Inherited from SoDisposable.)
Public propertynumSigBits

Number of significant bits of the final composed datum.

Public propertypreDefCompositor

Predefined composition method.

Public propertyrgbaMode

Final composed buffer contains RGBA values (default is false).

Public propertyUserData
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.)
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Remarks

The OIV.LDM.Nodes.SoDataCompositor node allows you to combine multiple data sets in memory instead of having to store the combined data sets on disk. For example, it can be used to visualize the result of the difference between two data sets. Notice: The OIV.LDM.Nodes.SoDataCompositor cannot be used for unary operation (the number of data set used with a data compositor must be stricly greater than one). Unary operation can be performed using the SoLDMDataTransformCB (see OIV.LDM.Nodes.SoDataSet node).

NOTE: This node is only useful in LDM mode.

A number of rules apply to the use of OIV.LDM.Nodes.SoDataCompositor:

For example, to realize the difference of two data sets, only the OIV.LDM.Nodes.SoDataCompositor node, the OIV.LDM.Nodes.SoDataSet nodes, and the rendering primitive node must be inserted under the OIV.LDM.Nodes.SoMultiDataSeparator node created to handle the composition.

Each OIV.LDM.Nodes.SoDataSet following the compositor must have the same exact dimensions. However, the data set nodes can have different voxel data types (bytes per voxel). The final voxel data type is specified by the data compositor node through the OIV.LDM.Nodes.SoDataCompositor.dataType field.

If the OIV.LDM.Nodes.SoDataCompositor.rgbaMode field is set to true, then OIV.LDM.Nodes.SoDataCompositor.dataType and OIV.LDM.Nodes.SoDataCompositor.numSigBits are ignored, and the output data is generated as UNSIGNED_INT32 with 32 significant bits.

The OIV.LDM.Nodes.SoDataCompositor node offers different default composition operators (see OIV.LDM.Nodes.SoDataCompositor.preDefCompositor) but it is possible to create a customized operator by subclassing the node and redefining one of the OIV.LDM.Nodes.SoDataCompositor.Compose(System.Int32, OIV.Inventor.SbVec3i32, System.Int32[], OIV.Inventor.Devices.SoBufferObject[], OIV.Inventor.Devices.SoBufferObject) methods. To use the custom operator, the OIV.LDM.Nodes.SoDataCompositor.preDefCompositor field must be set to NONE.

FILE FORMAT/DEFAULT

DataCompositor{
dataType UNSIGNED_BYTE
numSigBits 0
rgbaMode false
preDefCompositor MINUS
convert true
}

ACTION BEHAVIOR

OIV.Inventor.Actions.SoCallbackAction, OIV.Inventor.Actions.SoGLRenderAction, OIV.Inventor.Actions.SoWriteAction, OIV.Inventor.Actions.SoGetBoundingBoxAction, OIV.Inventor.Actions.SoPickAction Sets data compositor parameters in the traversal state.

See Also