Oh duh. I thought it might be simple.
The flags passed in to the GeometryArray constructor are not Capability
flags at all. So I got it all to work again by setting the following
in the constructor:
int flags =
GeometryArray.BY_REFERENCE |
TriangleFanArray.COORDINATES |
TriangleFanArray.NORMALS |
TriangleFanArray.TEXTURE_COORDINATE_2;
and then passing all the Capability settings through the usual way:
setCapability(GeometryArray.ALLOW_REF_DATA_READ);
-- Russell
Russell East wrote:
Hi folks.
I am building geometry using GeometryArray.setCoordRefDouble() and, by
and large it all seems to work fine, as far as displaying the 3d data
is concerned anyway.
But I'm running into a problem, once the data goes live, and I want to
calculate something based upon the coordinates.
The problem occurs if I try to use the getCoordRefDouble() method. It
throws the following exception:
javax.media.j3d.CapabilityNotSetException: GeometryArray: no
capability to read data reference
at
javax.media.j3d.GeometryArray.getCoordRefDouble(GeometryArray.java:4311)
My code actually calls the exact same method *before* it all goes live
without any problem, so it is kind of frustrating.
Anyway, here are the flags that I have setup for each GeometryArray:
int flags =
GeometryArray.BY_REFERENCE |
GeometryArray.ALLOW_COORDINATE_READ |
TriangleFanArray.COORDINATES |
TriangleFanArray.NORMALS |
TriangleFanArray.TEXTURE_COORDINATE_2;
From this, and the exception message, it seems that I should also include
GeometryArray.ALLOW_REF_DATA_READ |
But, when I include this flag, the GeometryArray no longer renders - I
get a blank Canvas3D, where once I was getting the data to display no
problems.
Is there something I missed here, or is using CoordRef data
problematic? If anyone has a clue about this I'd appreciate it.
I can possibly live without the CoordRef, though it looks like a
useful facility, to be able to modify the coords on the fly (though I
have yet to do this btw).
-- Russell
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
