Re: LineStripArray

• To: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Subject: Re: LineStripArray
• From: Doug Lindholm <lind@xxxxxxxx>
• Date: Thu, 07 Oct 1999 12:27:49 -0600

Bill Hibbard wrote:
> 
> Hi Doug,
> 
> > How do I create a VisADLineStripArray? I have a list of coordinates and
> > I want a shape that connects the dots. I have used a VisADLineArray but
> > I have to list each coordinate twice:
> >
> > shape.coordinates = new float[] {x1,y1,z1, x2,y2,z2,
> >                                  x2,y2,z2, x3,y3,z3};
> >
> > Will a VisADLineStripArray allow me to do something like
> >
> > shape.coordinates = new float[] {x1,y1,z1, x2,y2,z2, x3,y3,z3};
> >
> > and if so, what should I use for vertexCount?
> >
> > When I do the latter with vertexCount = 3, I get an error:
> >
> > java.lang.NullPointerException:
> > . . .
> 
> Did you fill in VisADLineStripArray.stripVertexCounts?  Like this:
> 
>   ((VisADLineStripArray) array).stripVertexCounts = new int[1];
>   ((VisADLineStripArray) array).stripVertexCounts[0] = array.vertexCount;
> 
> If there is more than one strip in the array (i.e., lift the pen
> between strips) then the values in stripVertexCounts should sum
> to vertexCount.
> 

That's what I needed.

Thanks,
Doug

-- 
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| Doug Lindholm, Software Engineer          |  E-mail: lind@xxxxxxxx   |
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• References:
  • LineStripArray
    • From: Doug Lindholm
  • Re: LineStripArray
    • From: Bill Hibbard