LineStripArray

• To: "visad-list@xxxxxxxxxxxxx" <visad-list@xxxxxxxxxxxxx>
• Subject: LineStripArray
• From: Doug Lindholm <lind@xxxxxxxx>
• Date: Thu, 07 Oct 1999 12:02:17 -0600

Hi,

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:
        at
javax.media.j3d.GeometryStripArrayRetained.setStripVertexCounts(GeometryStripArrayRetained.java:37)
        at
javax.media.j3d.GeometryStripArray.<init>(GeometryStripArray.java:51)
        at javax.media.j3d.LineStripArray.<init>(LineStripArray.java:60)
        at
visad.java3d.DisplayImplJ3D.makeGeometry(DisplayImplJ3D.java:398)
...

Thanks,
Doug

-- 
*----------------------------------------------------------------------*
| Doug Lindholm, Software Engineer          |  E-mail: lind@xxxxxxxx   |
| Research Applications Program             |   Phone: 303-497-8374    |
| National Center for Atmospheric Research  |                          |
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• Follow-Ups:
  • Re: LineStripArray
    • From: Bill Hibbard