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Open Inventor Release 2024.2.1
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Open Inventor Release 2024.2.1
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Group node dedicated to render multiple co-planar shapes. More...
#include <Inventor/nodes/SoOverlayGroup.h>
Inheritance diagram for SoOverlayGroup:Public Member Functions | |
| virtual SoType | getTypeId () const |
| Returns the type identifier for this specific instance. | |
| SoOverlayGroup () | |
| Creates an empty overlay group node. | |
| Public Member Functions inherited from SoGroup | |
| SoGroup () | |
| Creates an empty group node. | |
| SoGroup (int nChildren) | |
| Constructor that takes approximate number of children. | |
| virtual void | addChild (SoNode *child) |
| Adds a child as last one in group. | |
| virtual void | insertChild (SoNode *child, int newChildIndex) |
| Adds a child so that it becomes the one with the given index. | |
| virtual SoNode * | getChild (int index) const |
| Returns pointer the child node with the given index. | |
| virtual int | findChild (const SoNode *child) const |
| Finds index of given child within group. | |
| virtual int | getNumChildren () const |
| Returns number of children. | |
| virtual void | removeChild (int index) |
| Removes child with given index from group. | |
| virtual void | removeChild (SoNode *child) |
| Removes first instance of given child from group. | |
| virtual void | removeAllChildren () |
| Removes all children from group. | |
| virtual void | replaceChild (int index, SoNode *newChild) |
| Replaces child with given index with new child. | |
| virtual void | replaceChild (SoNode *oldChild, SoNode *newChild) |
| Replaces first instance of given child with new child. | |
| Public Member Functions inherited from SoNode | |
| virtual void | setOverride (const SbBool state) |
| Turns the override flag on or off. | |
| virtual SbBool | isOverride () const |
| Returns the state of the override flag. | |
| virtual SoNode * | copy (SbBool copyConnections=FALSE) const |
| Creates and returns an exact copy of the node. | |
| virtual SbBool | affectsState () const |
| Returns TRUE if a node has an effect on the state during traversal. | |
| virtual void | touch () |
| Marks an instance as modified, simulating a change to it. | |
| Public Member Functions inherited from SoFieldContainer | |
| void | setToDefaults () |
| Sets all fields in this object to their default values. | |
| SbBool | hasDefaultValues () const |
| Returns TRUE if all of the object's fields have their default values. | |
| SbBool | fieldsAreEqual (const SoFieldContainer *fc) const |
| Returns TRUE if this object's fields are exactly equal to fc's fields. | |
| void | copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE) |
| Copies the contents of fc's fields into this object's fields. | |
| SoNONUNICODE SbBool | set (const char *fieldDataString) |
| 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. | |
| SbBool | set (const SbString &fieldDataString) |
| 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. | |
| void | get (SbString &fieldDataString) |
| Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
| virtual int | getFields (SoFieldList &list) const |
| Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
| virtual int | getAllFields (SoFieldList &list) const |
| Returns a list of fields, including the eventIn's and eventOut's. | |
| virtual SoField * | getField (const SbName &fieldName) const |
| Returns a the field of this object whose name is fieldName. | |
| virtual SoField * | getEventIn (const SbName &fieldName) const |
| Returns a the eventIn with the given name. | |
| virtual SoField * | getEventOut (const SbName &fieldName) const |
| Returns the eventOut with the given name. | |
| SbBool | getFieldName (const SoField *field, SbName &fieldName) const |
| Returns the name of the given field in the fieldName argument. | |
| SbBool | enableNotify (SbBool flag) |
| Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE). | |
| SbBool | isNotifyEnabled () const |
| Notification is the process of telling interested objects that this object has changed. | |
| virtual void | setUserData (void *data) |
| Sets application data. | |
| void * | getUserData (void) const |
| Gets user application data. | |
| Public Member Functions inherited from SoBase | |
| virtual SbName | getName () const |
| Returns the name of an instance. | |
| virtual void | setName (const SbName &name) |
| Sets the name of an instance. | |
| void | setSynchronizable (const bool b) |
| Sets this to be a ScaleViz synchronizable object. | |
| bool | isSynchronizable () const |
| Gets the ScaleViz synchronizable state of this object. | |
| Public Member Functions inherited from SoRefCounter | |
| void | ref () const |
| Adds a reference to an instance. | |
| void | unref () const |
| Removes a reference from an instance. | |
| void | unrefNoDelete () const |
| unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
| int | getRefCount () const |
| Returns current reference count. | |
| void | lock () const |
| lock this instance. | |
| void | unlock () const |
| unlock this instance. | |
| Public Member Functions inherited from SoTypedObject | |
| SbBool | isOfType (const SoType &type) const |
| Returns TRUE if this object is of the type specified in type or is derived from that type. | |
| template<typename TypedObjectClass > | |
| SbBool | isOfType () const |
| Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Static Public Member Functions | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoGroup | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoNode | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| static SoNode * | getByName (const SbName &name) |
| A node's name can be set using SoBase::setName(). | |
| static int | getByName (const SbName &name, SoNodeList &list) |
| A node's name can be set using SoBase::setName(). | |
| Static Public Member Functions inherited from SoFieldContainer | |
| static SoType | getClassTypeId () |
| Returns the type of this class. | |
| Static Public Member Functions inherited from SoBase | |
| static SoType | getClassTypeId () |
| Returns type identifier for this class. | |
| Static Public Member Functions inherited from SoTypedObject | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
Additional Inherited Members | |
| Public Attributes inherited from SoGroup | |
| SoSFBool | boundingBoxIgnoring |
| Whether to ignore this node during bounding box traversal. | |
Group node dedicated to render multiple co-planar shapes.
Derived from the class SoGroup, the SoOverlayGroup node renders multiple co-planar shapes without any Z-fighting artifacts.
Overlapping co-planar shapes should be inserted as children of a SoOverlayGroup. The shapes are stacked for the rendering according to their places in the child list: the i th shape will be drawn above the i-1 th shape.
For instance, in the following picture the red square is the first shape child, and the green triangle is the second shape child of a SoOverlayGroup.
In the following picture, the green triangle is the first shape child.
In this picture, the square and the triangle are inserted in a SoGroup, which does not prevent the Z-fighting artifact where the 2 shapes overlap.
The SoOverlayGroup is only designed to correctly render planar shapes. Inserting in SoOverlayGroup spheres, cylinders, cubes or any shape whose vertices are not on a single euclidean plane may cause an unexpected rendering. However, this does not limit the SoOverlayGroup to 2D rendering. You can create several SoOverlayGroup instances, but all the shapes under an overlay group must be a planar shape and must be located on the same 3D plane. One different 3D plane per instance of SoOverlayGroup is possible as in the following picture from the example "Inventor\Features\OverlayPanels" in which each panel corresponds to one instance of an SoOverlayGroup.
The SoOverlayGroup is not designed to solve any Z-fighting artifact on 3D shapes. For instance, a correct rendering of meridian circles onto a sphere requires using either SoPolygonOffset or SoDepthOffset.
SoDepthOffset, SoGroup, SoPolygonOffset, SoSeparator, SoSwitch
NOTE: node available since Open Inventor 2024.1
Definition at line 92 of file SoOverlayGroup.h.
| SoOverlayGroup::SoOverlayGroup | ( | ) |
Creates an empty overlay group node.
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static |
Returns the type identifier for this class.
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virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoGroup.
1.9.8 