Resizing viewport ( in multiple viewport ) on demand

Troubleshooting graphics
1

Hi there,



i have 2 viewport on my scene that are looking on 2 different direction , i want that in a specific action i’m doing the other view port change it size :



[java]

cam2 = cam.clone();

cam2.setViewPort(0.7f, 1f, 0.7f, 1f); // <== I’m trying to change this value on demand from my game so i can resize as i want without touching the code

cam.setLocation(new Vector3f(character.getLocalTranslation().x-10f,character.getLocalTranslation().y,character.getLocalTranslation().z-2f));

cam.lookAt(character.getLocalTranslation(), Vector3f.UNIT_Y);

cam2.setLocation(new Vector3f(mob.getLocalTranslation().x-2f,mob.getLocalTranslation().y,mob.getLocalTranslation().z-2f));



cam2.lookAt(mob.getLocalTranslation(), Vector3f.UNIT_Y);

ViewPort view2 = renderManager.createMainView(“Top Right”, cam2);

view2.setClearEnabled(true);

view2.attachScene(rootNode);

[/java]



when i try to do that , i have a magnific :

GRAVE: Uncaught exception thrown in Thread[LWJGL Renderer Thread,5,main]



Thanks in advance

2

Whats the exception?

3

any null checks there, at all ?

4
Momoko_Fan said:
Whats the exception?

Hi momoko_fan the exception is : java.lang.NullPointerException

Setekh said:
any null checks there, at all ?


well ... i did another test here :
[java]
if (name.equals("Test")&& keyPressed){ // By pressing Space Bar i'm trying to change the location of the second camera in viewport
cam2.setLocation(new Vector3f(0,0,0));

}
[/java]

and same error
5

So cam2 is probably null.