SoUpdateAreaElement

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

```
public class SoUpdateAreaElement
extends SoElement
```
Stores the rectangular area within the current viewport region that needs to be updated when rendering. This element stores the rectangular area within the current viewport region that needs to be updated when rendering. It can be used for partial rendering updates when applications know that only a portion of the objects need to be rerendered. Cameras can use the info in this element to set up a view volume against which culling can be performed.
This element also sets the GL scissor box to limit drawing.
The update area is specified in normalized viewport coordinates, where (0,0) is the lower left corner of the viewport and (1,1) is the upper right corner. The area is given as an origin and a size.

See Also:

PoBaseView, 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 Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static SbVec2f[]`	`get(SoState state)`	Returns current update area from the state.
`static int`	`getClassStackIndex()`	Deprecated. As of Open Inventor 9300.
`static SbVec2f`	`getDefaultOrigin()`	Returns the default update area origin.
`static SbVec2f`	`getDefaultSize()`	Returns the default update area size.
`void`	`push(SoState state)`	Overrides `push()` method to copy values from next instance in the stack.
`static void`	`set(SoState state, SbVec2f origin, SbVec2f size)`	Sets the current update area in the state.

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

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
  - getDefaultOrigin
```
public static SbVec2f getDefaultOrigin()
```
    Returns the default update area origin.
  - 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,
                       SbVec2f origin,
                       SbVec2f size)
```
    Sets the current update area in the state.
  - getDefaultSize
```
public static SbVec2f getDefaultSize()
```
    Returns the default update area size.
  - push
```
public void push(SoState state)
```
    Overrides push() method to copy values from next instance in the stack.
    
    Overrides:
    
    push in class SoElement
  - get
```
public static SbVec2f[] get(SoState state)
```
    Returns current update area from the state. Returns true if the update area is the default, namely, the entire viewport.