Re: [JAVA3D] vertex of a shape3d

[BEGHIN Matthieu]

I had the same problem and posted it. My solution was to avoid getting vertex coordinates.
I know this exception is only thrown with Java3D 1.3, not with previous realeases.

The problem is that loaders we are using creates GeometryArray in BY_REFERENCE mode, which is a parameter of the constructor.
I'd like to know another way to get vertex coordinates in a TriangleStrip array.

Thanks for your help.

  Olivier Tassy <[EMAIL PROTECTED]> a �crit :

Hello,

I am trying to get the position of every vertex of a shape3d in a live scene.

I use the following code:

 

Shape3D node1 = (Shape3D) shapeTab.get(item1);

TriangleArray geom1 = (TriangleArray) node1.getGeometry();

Point3d[] coordinates = new Point3d[geom1.getVertexCount()];
for(int n = 0; n < geom1.getVertexCount(); n++)
             coordinates[n] = new Point3d();
geom1.getCoordinates(0, coordinates);       <<crash here

 

 

and I get this message:

 

java.lang.IllegalStateException: GeometryArray: cannot directly access data in B
Y_REFERENCE mode
        at javax.media.j3d.GeometryArray.getCoordinates(GeometryArray.java:2743)

....

 

shape3d in the shapeTab hashtable have been created, in the main class, with these authorisations.

                node.setCapability(Shape3D.ALLOW_GEOMETRY_READ);

                node.getGeometry().setCapability(TriangleArray.ALLOW_COORDINATE_READ);
                node.getGeometry().setCapability(TriangleArray.ALLOW_COUNT_READ);

 

 

thanks for your help,

Olivier.

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