SoViewport Class |
Viewport parameters node.
Namespace: OIV.Inventor.Nodes
The SoViewport type exposes the following members.
Name | Description | |
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SoViewport | Constructor. |
Name | Description | |
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AffectsState | Returns true if a node has an effect on the state during traversal. | |
Callback | (Overrides SoNodeCallback(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 | default actions behavior | |
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. | |
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 SoNodeGetBoundingBox(SoGetBoundingBoxAction).) | |
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 | (Overrides SoNodeGetMatrix(SoGetMatrixAction).) | |
GetName | Returns the name of an instance. | |
GetPrimitiveCount | (Inherited from SoNode.) | |
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 SoNodeGLRender(SoGLRenderAction).) | |
GLRenderBelowPath | (Inherited from SoNode.) | |
GLRenderInPath | (Inherited from SoNode.) | |
GLRenderOffPath | (Inherited from SoNode.) | |
GrabEventsCleanup | (Inherited from SoNode.) | |
GrabEventsSetup | (Inherited from SoNode.) | |
HandleEvent | (Overrides SoNodeHandleEvent(SoHandleEventAction).) | |
HasDefaultValues | Returns true if all of the object's fields have their default values. | |
IsBoundingBoxIgnoring | 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. | |
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 | (Overrides SoNodePick(SoPickAction).) | |
RayPick | (Inherited from SoNode.) | |
Search | (Inherited from SoNode.) | |
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 SoNode.) |
Name | Description | |
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IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) | |
origin | Specifies the position of the viewport in pixels. | |
size | Specifies the size of the viewport in pixels. | |
UserData |
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.) |
This node specifies the viewport used for rendering.
The view volume specified by the current camera will be mapped into this region of the render target (e.g. the viewer window). By default Open Inventor manages the viewport to be the entire render target, even if the window (for example) is resized. So this node is useful for rendering objects in a specific part of the window, for example screen locked annotation graphics like legends and a "compass".
Remember that the camera node's viewportMapping field is set to ADJUST_CAMERA by default. In this mode the camera automatically adjusts its view volume to have the same aspect ratio as the viewport (widening for example) to avoid distorting shapes in the scene. But note that the camera will compare the aspect ratio of its view volume to the aspect ratio of the viewport that is in effect when the camera node is traversed. So it's generally better to create a camera for each viewport and make sure the camera node is traversed after the viewport node. If using multiple viewports with the same camera, generally the viewports should all have the aspect ratio.
Tip: You can use the OIV.Inventor.Nodes.SoDepthBuffer node to clear the depth buffer in the viewport region to ensure annotation graphics render correctly. However, in general, you should put an OIV.Inventor.Nodes.SoViewportClipping node before this node to limit the effect of the depth buffer clear to the desired viewport.
If you want to place multiple "views" inside the same window, consider the OIV.Inventor.Gui.View.PoView and OIV.Inventor.Gui.View.PoSceneView nodes. Views allow the application to specify multiple cameras, each with its own separate viewport Views can be used, for example, to subdivide the window into multiple independent views of a 3D scene or to create an inset "bird's eye" view inside the window, without the overhead of creating separate windows. The advantage of using the view nodes over OIV.Inventor.Nodes.SoViewport is that when mouse event locations are mapped back into 3D space, Open Inventor automatically uses the view volume of the camera associated with the view node whose viewport currently contains the mouse cursor.
Note |
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Node available since Open Inventor 8.6 FILE FORMAT/DEFAULT |
origin | (0,0) |
size | (0,0) |
OIV.Inventor.Actions.SoGLRenderAction Sets: OIV.Inventor.Elements.SoViewportRegionElement