Problems with Line and Point

Troubleshooting graphics
1

Hi everybody!



I got this exception after running these commands:

rootNode.attachChild(new Line()); and rootNode.attachChild(new Point());



SEVERE: Exception in game loop

java.lang.NullPointerException

    at com.jme.renderer.lwjgl.LWJGLRenderer.draw(LWJGLRenderer.java:768)

    at com.jme.scene.batch.LineBatch.draw(LineBatch.java:241)

    at com.jme.scene.Line.draw(Line.java:403)

    at com.jme.scene.Spatial.onDraw(Spatial.java:252)

    at com.jme.scene.Node.draw(Node.java:504)

    at com.jme.scene.Spatial.onDraw(Spatial.java:252)

    at com.jme.renderer.lwjgl.LWJGLRenderer.draw(LWJGLRenderer.java:1127)

    at com.jme.app.SimpleGame.render(SimpleGame.java:92)

    at com.jme.app.BaseGame.start(BaseGame.java:82)

    at Game.main(Game.java:24)



Could anyone help me?

Thanks!

2

you can't use the default constructor without further initializing the object.



try:

new com.jme.scene.Line("grid", vertices, null,
                null, null) {



Where Vertices is a Vector3f[].
3
Core-Dump said:

you can't use the default constructor without further initializing the object.

try:

new com.jme.scene.Line("grid", vertices, null,
                null, null) {



Where Vertices is a Vector3f[].


Great!  :D
It's working now!
Thank you very much, Core-Dump!