Watch out... some of these are not clean bits. In other words flags & COLOR_3 will != 0 even if flags == COLOR_4.
I always check like this: ((flags & XXXX) == XXXX) I only know I once had several hours of pain wondering why my code was not working since I had assumed it was one bit per flag type and was doing ((flags & XXXX) != 0). Dave Yazel -----Original Message----- From: David Rush [mailto:[EMAIL PROTECTED]] Sent: Wednesday, April 10, 2002 1:05 PM To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] How do I... Ta very much. David > > From: Daniel Selman <[EMAIL PROTECTED]> > Date: Wed 10/Apr/2002 19:04 CEST > To: [EMAIL PROTECTED] > Subject: Re: [JAVA3D] How do I... > > David, > > The universally useful & and | operators. > > in vertexFormat = foo.getVertexFormat(); > > if( (vertexFormat & GeometryArray.BY_REFERENCE) == > GeometryArray.BY_REFERENCE) > { > // yep, the bit is set... > } > > Sincerely, > > Daniel Selman > > Author - "Java 3D Programming" > http://www.manning.com/selman > > -----Original Message----- > From: Discussion list for Java 3D API > [mailto:[EMAIL PROTECTED]]On Behalf Of David Rush > Sent: Wednesday, April 10, 2002 10:03 AM > To: [EMAIL PROTECTED] > Subject: How do I... > > > ..query a GeometryArrayobject to find out if it is BY_REFERENCE or not? > I thought getVertexFormat() should work but the vertex format is input as a > bitmask i.e. > > GeometryArray.COORDINATES | GeometryArray.NORMALS | > GeometryArray.BY_REFERENCE > > How can I get just the BY_REFERENCE bit? > > David > > =========================================================================== > 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". > > =========================================================================== > 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". > > =========================================================================== 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". =========================================================================== 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".
