[Chimera-users] Writing a .x3d file that other programs can read

Greg Couch gregc at cgl.ucsf.edu
Wed Jun 7 14:17:10 PDT 2006

On Wed, 7 Jun 2006, Esther Bullitt wrote:

> I am having trouble exporting a .x3d file in a format which  programs that
> convert .x3d data to VRML data can read.
> The error message for one of them is:
> Xj3D Version: 1_0
> Device found: Mouse-0
> Device found: Keyboard-0
> Error: Unexpected Exception:
> Unknown field name: chimera:hither for node:
> org.web3d.vrml.renderer.ogl.nodes.navigation.OGLViewpoint at 1080876
> Error: Failed to load file

This is enough of a hassle that we plan to add direct export to VRML97 
this summer.  In fact, I have yet to find a converter that produces 
unextended VRML97 .  If you get the Xj3D converter to work for you, please 
let me know.

The workaround for the problem you're having is to hand edit the .x3d file 
and remove the chimera:hither='...' and chimera:yon='...' fields from the 
Viewpoint tag as well as the <chimera:WindowSize ...> and 
<chimera:DepthCue ...> tags.  Then Xj3D and X3DConv will open the file 

The chimera: extensions are legal XML, but Xj3D is not skipping them as it 
should.  I'll file a bug with them.

 	Greg Couch
 	UCSF Computer Graphics Lab

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