By using count++ twice, you access a different element than you
stored your value in.
Andreas
Ashish Aggarwal wrote:
>
> hello!
>
> Can somebody help me:
>
> I have a box and cylinder in the screen. I want to
> draw a line between them by clicking with mouse. I
> have stored the centre of bounds of two objects
> using setUserData() method. I am also able to pick
> the objects on the screen using pick methods.
>
> The only problem that is coming is that getUserData is
> returning null, which I don't know why. I might be
> making some silly mistake but i don't have any idea
> about it. I am working on this code for last four
> days and have tried different things. I am attaching
> the entire code as well as getUserData part.
>
> Since cg[] is null, i am getting null pointer
> exception.
>
> if ( myShape!=null)
> {
> cg[count++] = (Point3d)myShape.getUserData();
> System.out.println(cg[count++]);//returning null
> LineArray la=new
> LineArray(count,LineArray.COORDINATES);
> la.setCoordinates(0,cg);
> }
>
> Please tell me.
>
> Thanks
>
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> ------------------------------------------------------------------------
> Name: SimpleLine.java
> SimpleLine.java Type: JavaScript Program (application/x-javascript)
> Encoding: base64
> Description: SimpleLine.java
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