Hi,
It could be that your front clip distance is too big, try making it smaller
using the
setFrontClipDistance method of the view class.
Hope this helps,
Renoir
gaoming fu wrote:
> Hi, all
>
> Sorry for sending this message without finishing it.
>
> I built some polyhedrons using IndexedTriangleArray, the normal for each
> vertex point is (0.0, -1.0, 0.0). I used the following code to set the
> appearance:
>
> PolygonAttributes pa = new PolygonAttributes();
> pa.setCullFace(PolygonAttributes.CULL_NONE);
> pa.setBackFaceNormalFlip(true);
>
> Appearance app = new Appearance();
> app.setPolygonAttributes(pa);
>
> I also applied the lights and MouseZoom to my TransformGroup object using
> the following code:
>
> //add AmbientLight and DirectionalLight to objScale
> AmbientLight lightA = new AmbientLight(new Color3f(0.2f,0.2f,0.2f));
> lightA.setInfluencingBounds(new BoundingSphere());
> objScale.addChild(lightA);
>
> DirectionalLight lightD1 = new DirectionalLight();
> lightD1.setInfluencingBounds(new BoundingSphere());
> Vector3f direction = new Vector3f(0.0f, -1.0f, 0.0f);
> direction.normalize();
> lightD1.setDirection(direction);
> lightD1.setColor(new Color3f(0.0f, 1.0f, 0.0f));
> objScale.addChild(lightD1);
>
> MouseZoom behavior2 = new MouseZoom();
> behavior2.setTransformGroup(objScale);
> objScale.addChild(behavior2);
> behavior2.setSchedulingBounds(bounds);
>
> Now my trouble is, if I keep zooming in, I can not see some sides of the
> polyhedrons. It seems that the normals changed. I do not have this trouble
> if I keep zooming out. I am not sure if this is normal problem, or lighting
> problem.
>
> Any help will be highly appreciated.
>
> Gaoming
>
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--
Renoir Sewjee
Software Engineer
ISS International (Welkom)
Tel: +27 (0)57 912 2702
Fax: +27 (0)57 912 2652
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