SlickCallable

```
public abstract class SlickCallable
extends java.lang.Object
```
A utility to allow performing GL operations without contaminating the Slick OpenGL state. Note this will not protect you from OpenGL programming errors like a glBegin() without a glEnd(), or glPush() without glPop() etc. Expected usage: SlickCallable callable = new SlickCallable() { public performGLOperations() throws SlickException { GL.glTranslate(0,0,1); glBegin(GL.GL_POLYGONS); glVertex(..); ... glEnd(); } } callable.call(); Alternatively you can use the static methods directly SlickCallable.enterSafeBlock(); GL.glTranslate(0,0,1); glBegin(GL.GL_POLYGONS); glVertex(..); ... glEnd(); SlickCallable.leaveSafeBlock();

Constructors
Constructor and Description
`SlickCallable()`

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`call()` Cause this callable to perform it's GL operations (@see performGLOperations()).
`static void`	`enterSafeBlock()` Enter a safe block ensuring that all the OpenGL state that slick uses is safe before touching the GL state directly.
`static void`	`leaveSafeBlock()` Leave a safe block ensuring that all of Slick's OpenGL state is restored since the last enter.
`protected abstract void`	`performGLOperations()` Perform the GL operations that this callable is intended to.

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

Class SlickCallable