SoLogicalViewportElement

java.lang.Object
- com.openinventor.inventor.Inventor
- - com.openinventor.inventor.elements.SoElement
  - - com.openinventor.inventor.elements.SoLogicalViewportElement

```
public class SoLogicalViewportElement
extends SoElement
```
Stores the logical viewport region. This element stores the logical viewport region, which indicates to the camera(s) the whole size of the window which is being rendered into. This information is needed when the viewport region has been split, so that the camera doesn't adjust its parameters on only a part of the whole window.
LogicalViewportElement is used for "tiled" rendering in this case it contains the size (and aspect ratio) of the complete large image, while ViewportRegionElement contains the size of the tile (subimage) we are currently rendering. SoCamera.computeView uses the logical viewport's aspect ratio for ADJUST_CAMERA mode, so we render all the tiles with the same adjustment (but only if the LogicalViewportElement was actually set during traversal see SoOffscreenRenderArea).

See Also:

PoBaseView, SoOffscreenRenderArea, SoGLRenderAction

Nested Class Summary
- Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor
  Inventor.ConstructorCommand

Field Summary
- Fields inherited from class com.openinventor.inventor.Inventor
  VERBOSE_LEVEL, ZeroHandle

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static SbViewportRegion`	`get(SoState state)`	Returns the current viewport region from the state.
`static int`	`getClassStackIndex()`	Deprecated. As of Open Inventor 9300.
`static SbViewportRegion`	`getDefaultViewport()`	Returns the default viewport region.
`static void`	`set(SoState state, SbViewportRegion vp)`	Sets the viewport region.

Methods inherited from class com.openinventor.inventor.elements.SoElement
getClassStackIndex, pop, push

Methods inherited from class com.openinventor.inventor.Inventor
dispose, getNativeResourceHandle

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getClassStackIndex
```
@Deprecated
public static int getClassStackIndex()
```
    Deprecated.
    As of Open Inventor 9300. replaced by SoElement.getClassStackIndex(Class)
    
    Returns the stack id for this element. ] *
  - set
```
public static void set(SoState state,
                       SbViewportRegion vp)
```
    Sets the viewport region.
  - getDefaultViewport
```
public static SbViewportRegion getDefaultViewport()
```
    Returns the default viewport region.
  - get
```
public static SbViewportRegion get(SoState state)
```
    Returns the current viewport region from the state.