private void drawVerticalLine(float lineWidth, float x, ColorRGBA color) {
        Material material = new Material(assetManager, Materials.UNSHADED);
        material.setColor("Color", color.clone());
        material.getAdditionalRenderState().setLineWidth(lineWidth);

        float viewportHeight = cam.getHeight();
        Vector3f startLocation = new Vector3f(x, 0.1f * viewportHeight, 0f);
        Vector3f endLocation = new Vector3f(x, 0.9f * viewportHeight, 0f);
        Mesh wireMesh = new Line(startLocation, endLocation);
        Geometry wire = new Geometry("wire", wireMesh);
        wire.setMaterial(material);
        guiNode.attachChild(wire);
    }
Display the renderer's maximum line width.

@author Stephen Gold sgold@sonic.net
jme3-examples/src/main/java/jme3test/renderer/TestLineWidth.java