| SoLOD Class |
Distance-based level-of-detail switching group node.
Inheritance HierarchyOIV.InventorSoNetBase
OIV.InventorSoDisposable
OIV.Inventor.MiscSoBase
OIV.Inventor.FieldsSoFieldContainer
OIV.Inventor.NodesSoNode
OIV.Inventor.NodesSoGroup
OIV.Inventor.NodesSoLOD
OIV.Inventor.NodesSoLevelOfSimplification
Namespace: OIV.Inventor.Nodes
Assembly: OIV.Inventor (in OIV.Inventor.dll) Version: 2024.2.2.0 (10.16.2.0)
SyntaxThe SoLOD type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | SoLOD | Creates a distance-based level-of-detail node with default settings. |
| SoLOD(Int32) | Constructor that takes approximate number of children. |
Methods| Name | Description | |
|---|---|---|
| AddChild | Adds a child as last one in group. |
| AffectsState | Returns true if a node has an effect on the state during traversal. |
| Callback | (Overrides SoGroupCallback(SoCallbackAction).) |
| Copy | Calls Copy(false). (Inherited from SoNode.) |
| Copy(Boolean) | Creates and returns an exact copy of the node. |
| CopyFieldValues(SoFieldContainer) | Calls CopyFieldValues(fc, false). (Inherited from SoFieldContainer.) |
| CopyFieldValues(SoFieldContainer, Boolean) | Copies the contents of fc's fields into this object's fields. |
| Dispose |
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.) |
| Distribute | (Inherited from SoNode.) |
| DoAction | (Overrides SoGroupDoAction(SoAction).) |
| EnableNotify | Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false). |
| Equals | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
| FieldsAreEqual | Returns true if this object's fields are exactly equal to fc's fields. |
| FindChild | Finds index of given child within group. |
| Get | Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. |
| GetAllFields | Returns a list of fields, including the eventIn's and eventOut's. |
| GetAlternateRep | This method is called by actions to allow the node to provide an "alternate representation" when appropriate (typically depending on the action type). |
| GetBoundingBox | (Overrides SoGroupGetBoundingBox(SoGetBoundingBoxAction).) |
| GetChild | Returns pointer the child node with the given index. |
| GetEventIn | Returns a the eventIn with the given name. |
| GetEventOut | Returns the eventOut with the given name. |
| GetField | Returns a the field of this object whose name is fieldName. |
| GetFieldName | Returns the name of the given field in the fieldName argument. |
| GetFields | Appends references to all of this object's fields to resultList, and returns the number of fields appended. |
| GetHashCode |
Overrides GetHashCode().
(Inherited from SoNetBase.) |
| GetMatrix | (Inherited from SoGroup.) |
| GetName | Returns the name of an instance. |
| GetNumChildren | Returns number of children. |
| GetPrimitiveCount | (Overrides SoGroupGetPrimitiveCount(SoGetPrimitiveCountAction).) |
| GetRenderEngineMode | Returns the supported Render engine mode. |
| GetRenderUnitID | (Inherited from SoNode.) |
| GetStringName | (Inherited from SoBase.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| GLRender | (Overrides SoGroupGLRender(SoGLRenderAction).) |
| GLRenderBelowPath | (Overrides SoNodeGLRenderBelowPath(SoGLRenderAction).) |
| GLRenderInPath | (Overrides SoNodeGLRenderInPath(SoGLRenderAction).) |
| GLRenderOffPath | (Overrides SoNodeGLRenderOffPath(SoGLRenderAction).) |
| GrabEventsCleanup | (Inherited from SoNode.) |
| GrabEventsSetup | (Inherited from SoNode.) |
| HandleEvent | (Inherited from SoGroup.) |
| HasDefaultValues | Returns true if all of the object's fields have their default values. |
| InsertChild | Adds a child so that it becomes the one with the given index. |
| IsBoundingBoxIgnoring | Used by BoundingBoxAction to known if bounding box computation should be ignored or not. |
| IsNotifyEnabled | Notification is the process of telling interested objects that this object has changed. |
| IsOverride | Returns the state of the override flag. |
| IsSynchronizable | Gets the ScaleViz synchronizable state of this object. |
| Pick | (Inherited from SoGroup.) |
| RayPick | (Overrides SoNodeRayPick(SoRayPickAction).) |
| RemoveAllChildren | Removes all children from group. |
| RemoveChild(Int32) | Removes child with given index from group. |
| RemoveChild(SoNode) | Removes first instance of given child from group. |
| ReplaceChild(Int32, SoNode) | Replaces child with given index with new child. |
| ReplaceChild(SoNode, SoNode) | Replaces first instance of given child with new child. |
| Search | (Inherited from SoGroup.) |
| Set | 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. |
| SetName | (Inherited from SoBase.) |
| SetOverride | Turns the override flag on or off. |
| SetSynchronizable | Sets this to be a ScaleViz synchronizable object. |
| SetToDefaults | Sets all fields in this object to their default values. |
| ToString |
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.) |
| Touch | Marks an instance as modified, simulating a change to it. |
| Write | (Inherited from SoGroup.) |
Properties| Name | Description | |
|---|---|---|
 | boundingBoxIgnoring | Whether to ignore this node during bounding box traversal. |
| center | Object-space center of the model. |
| IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) |
| range | World-space distances to use as switching criteria. |
| UserData |
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.) |
RemarksThis group node is used to allow applications to switch between various representations of objects automatically. The children of this node typically represent the same object or objects at varying levels of detail, from highest detail to lowest. The distance from the world-space eye point to the transformed center of the LOD is computed, and one child is drawn, based on the values in the ranges field.
More precisely, if the distance from the world-space eyepoint to the transformed center is D and the ranges array contains LAST_RANGE+1 values (numbered 0...LAST_RANGE), then:
if D < ranges[0] : Child 0 is drawn else if ranges[i-1] < D < ranges[i] : Child i is drawn else if D > ranges[LAST_RANGE] : Child LAST_RANGE+1 is drawnThus, N ranges and N+1 children should be specified. If you specify too few children, the last child will be used for the extra ranges. If you specify too few ranges, the extra children will never be used.
It is often useful to define the lowest detail child to be an OIV.Inventor.Nodes.SoInfo node. This causes the object to completely disappear if it is far enough away from the eyepoint. Defining the highest detail child to be an OIV.Inventor.Nodes.SoInfo node can also be useful if you want the object to disappear if it gets too close to the eyepoint.
FILE FORMAT/DEFAULT
LOD {
| center | 0 0 0 |
| range | [ ] |
ACTION BEHAVIOR
OIV.Inventor.Actions.SoGLRenderAction, OIV.Inventor.Actions.SoRayPickAction, OIV.Inventor.Actions.SoCallbackAction Only the child with the appropriate level of detail is traversed.
Other actions
All implemented as for OIV.Inventor.Nodes.SoGroup.
See Also