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Gnomon Class

Shape node to display a medical gnomon (compass) on the screen.

Preview Feature: this class is fully supported and can be used in Open Inventor applications. Being tagged as a Preview Feature just means that the implementation is still subject to API changes and adjustments based on feedback from early adopters. Please be also aware that source compatibility might be broken regardless of the Open Inventor compatibility changes policy due to our commitment to bring needed changes to be sure the specifications of this Preview Feature match the expectations of our customers.

Inheritance Hierarchy

Namespace: OIV.Medical.Nodes
Assembly: OIV.Medical (in OIV.Medical.dll) Version: 10.12.3.0.Release.03fa3fc14f5d05a3007fab6bc6264244021464bb
Syntax
public class Gnomon : SoAnnotation

The Gnomon type exposes the following members.

Constructors
  NameDescription
Public methodGnomon
Constructor
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Methods
  NameDescription
Public methodAddChild

Adds a child as last one in group.

(Inherited from SoGroup.)
Public methodAffectsState

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

(Inherited from SoSeparator.)
Public methodCallback
(Inherited from SoSeparator.)
Public methodClearCacheList
(Inherited from SoSeparator.)
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
(Inherited from SoSeparator.)
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 methodFindChild

Finds index of given child within group.

(Inherited from SoGroup.)
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
(Inherited from SoSeparator.)
Public methodGetCamera
Returns the internal gnomon camera (used internally in callback)
Public methodGetChild

Returns pointer the child node with the given index.

(Inherited from SoGroup.)
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 SoSeparator.)
Public methodGetName

Returns the name of an instance.

(Inherited from SoBase.)
Public methodGetNumChildren

Returns number of children.

(Inherited from SoGroup.)
Public methodGetPrimitiveCount
(Inherited from SoSeparator.)
Public methodGetRenderEngineMode
This override is mandatory to specify the custom node's render engine mode. If not overridden, a warning message will be displayed.
(Overrides SoNodeGetRenderEngineMode.)
Public methodGetRenderUnitID
(Inherited from SoAnnotation.)
Public methodGetStringName (Inherited from SoBase.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodGLRender
(Inherited from SoAnnotation.)
Public methodGLRenderBelowPath
(Inherited from SoAnnotation.)
Public methodGLRenderInPath
(Inherited from SoAnnotation.)
Public methodGLRenderOffPath
(Inherited from SoAnnotation.)
Public methodGrabEventsCleanup
(Inherited from SoNode.)
Public methodGrabEventsSetup
(Inherited from SoNode.)
Public methodHandleEvent
(Inherited from SoSeparator.)
Public methodHasDefaultValues

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

(Inherited from SoFieldContainer.)
Public methodInsertChild

Adds a child so that it becomes the one with the given index.

(Inherited from SoGroup.)
Public methodIsBoundingBoxIgnoring

Used by BoundingBoxAction to known if bounding box computation should be ignored or not.

(Inherited from SoGroup.)
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
(Inherited from SoGroup.)
Public methodRayPick
(Inherited from SoSeparator.)
Public methodRemoveAllChildren

Removes all children from group.

(Inherited from SoGroup.)
Public methodRemoveChild(Int32)

Removes child with given index from group.

(Inherited from SoGroup.)
Public methodRemoveChild(SoNode)

Removes first instance of given child from group.

(Inherited from SoGroup.)
Public methodReplaceChild(Int32, SoNode)

Replaces child with given index with new child.

(Inherited from SoGroup.)
Public methodReplaceChild(SoNode, SoNode)

Replaces first instance of given child with new child.

(Inherited from SoGroup.)
Public methodSearch
(Inherited from SoSeparator.)
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 methodSetGeometry
Replace the gnomon geometry (default is basic medical gnomon). Gnomon geometry should have a 3D extent of -1 to 1.
Public methodSetName (Inherited from SoBase.)
Public methodSetOverride

Turns the override flag on or off.

(Inherited from SoNode.)
Public methodSetScale
Scale the size of the gnomon (default is 1,1,1).
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
(Inherited from SoGroup.)
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Fields
  NameDescription
Public fieldcameraDistance
Specifies the distance from the camera to the gnomon geometry. Default is 3.5. Applications should not need to modify this value.
Public fieldheight
Specifies the height of the gnomon viewport in pixels (default is 100).
Public fieldisDisplayed
Controls whether the gnomon is visible (default is true).
Public fieldposition
Position of the gnomon viewport in pixels (default is 0,0).
Public fieldwidth
Specifies the width of the gnomon viewport in pixels (default is 100).
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Properties
  NameDescription
Public propertyboundingBoxCaching
(Inherited from SoSeparator.)
Public propertyboundingBoxIgnoring

Whether to ignore this node during bounding box traversal.

(Inherited from SoGroup.)
Public propertyfastEditing

Specifies the fast edit mode of the separator node.

(Inherited from SoSeparator.)
Public propertyIsDisposable
ISafeDisposable interface implementation.
(Inherited from SoDisposable.)
Public propertypickCulling

Whether to cull during picking traversal.

(Inherited from SoSeparator.)
Public propertyrenderCaching Obsolete.

Whether to cache during rendering traversal.

(Inherited from SoSeparator.)
Public propertyrenderCulling

Whether to cull during rendering traversal.

(Inherited from SoSeparator.)
Public propertyrenderUnitId

Used during the ScaleViz depth compositing process, this field specifies which render unit (OIRU) will render the sub scene graph below this separator.

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

This node displays a medical specific "gnomon" (compass) on the screen that shows the user the current orientation of the volume in 3D space.

Visibility of the gnomon is controlled by the isDisplayed field.

Position and size of the gnomon are specified in pixels using the position, width and height fields.

NOTE: The Gnomon node must be traversed after the main scene camera, i.e. must be after/below the camera in the scene graph.

FILE FORMAT/DEFAULT

Gnomon {
isDisplayed TRUE
position 0 0
width 100
height 100
}

See Also