Hi All,
I browsed the forum and it seems that in JME 3.0 people recommend drawing grids using a grid mesh. I presume that this is just a normal mesh? If so, is there any specific material for it?
The following is my approach to this. My question is whether there is a better one? Using Line from JME 2.0 was much more intuitive to me…any suggestions?
private void createGrid() {
Mesh m = new Mesh();
m.setLineWidth(10f);
Vector3f[] positions = {
new Vector3f(0, 0, 0),
new Vector3f(1, 0, 0)
…
};
// Define indices etc…
…
m.setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(positions));
Material mat = new Material(assetManager, “Common/MatDefs/Terrain/Terrain.j3md”);
gridGeometry = new Geometry(“Grid”, m);
gridGeometry.setMaterial(mat);
}
Last time i needed a grid i made it in blender and imported it as a ogre xml, because i’m lazy…
But if your approach works…it’s good 
It’s not my place to complain (apologies 
), however this approach seems a lot more tedious.
The previous seemed more intuitive. i.e.
for (int x = -300; x <= 300; x=x+10)
{
Line l = new Line(“xLine” + x, new Vector3f[]{
new Vector3f((float) x, 0f, -300f),
new Vector3f((float) x, 0f, 300f)
}, null, null, null);
l.setSolidColor(ColorRGBA.darkGray);
l.setModelBound(new BoundingBox());
l.updateModelBound();
l.setCastsShadows(false);
gridNode.attachChild(l);
}
maybe we should make a grid primitive…
I could create one if you guys want…
EDIT: Try that is.
And you’ll be very welcome! 
Cool, I’ll look into it and get back to you within the next couple of days.
Benjamin, your code from first post in this thread probably wouldn’t work for showing a proper grid. First, you should set mesh mode to lines, so that triangles will not be drawn. And then I suggest you to use SolidColor material with grid (which is not affected by light, and you can easily apply any color to it…). But material is already a matter of Geometry, so it doesn’t really concern Mesh.
Thanks! So that’s why it was behaving rather oddly 
nehon said:
maybe we should make a grid primitive...
There is a grid primitive. In com.jme3.scene.debug.Grid.
Cool. I’ll take a look at it. Thanks.
Doh!