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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Yes, I'm doing that. In fact my breakpoint in the constructor for UnshadedRenderJ3D is getting called, as are the breakpoints for all the constructors for the ShadowUnshaded***** It's the breakpoint in makeAppearance that's never getting hit.... Donna L. Gresh, Ph.D. IBM T.J. Watson Research Center (914) 945-2472 http://www.research.ibm.com/people/g/donnagresh gresh@xxxxxxxxxx Tom Rink <rink@xxxxxxxxxxxxx To: Donna L Gresh/Watson/IBM@IBMUS > cc: visad-list@xxxxxxxxxxxxx Sent by: Subject: Re: controlling shading owner-visad-list@ss ec.wisc.edu 01/24/2003 04:31 PM Are you sure you've included an instance of the custom renderer in your Display, eg display.addReferences( DataRenderer custom, DataReference ref) ? Donna L Gresh wrote: > I *think* that's what I'm doing; in my derived DataRenderer class I > override the various makeShadow* with my own. I have a bunch (for lack of > originality, I did the ones in the "barb" example). Then I'm not sure where > to put the makeAppearance thing; I tried putting it in one of them > (ShadowUnshadedRealTupleType), and then in all the others referring back to > that one, but it is apparently not geting called; putting a breakpoint in > my version of makeAppearance never gets hit, even though all my > ShadowUnshaded* guys are getting created..... Who calls makeAppearance? > > Donna L. Gresh, Ph.D. > IBM T.J. Watson Research Center > (914) 945-2472 > http://www.research.ibm.com/people/g/donnagresh > gresh@xxxxxxxxxx > > > Tom Rink > <rink@xxxxxxxxx.e To: Donna L Gresh/Watson/IBM@IBMUS > du> cc: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>, visad-list@xxxxxxxxxxxxx > Sent by: Subject: Re: controlling shading > rink@xxxxxxxxxxxx > u > > > 01/24/2003 03:41 > PM > > > Hi Donna > > In short, your custom DataRenderer needs to override the > makeShadow* methods defined in DataRenderer->RendererJ3D. > The new makeShadow* methods in the custom renderer return > the the new ShadowType extensions you've created. Of course, > how, and which, ShadowTypes you extend depends on what > you're trying to do. I'll let Bill elaborate on this further... > > TomR > > Donna L Gresh wrote: > > > Well, I decided to make a stab at "turning off" the shading on my flat > > surfaces, following the description below, information in the > datarenderer > > tutorial, and the example of the BarbRenderer. I began by creating the > > "skeleton" for my new DataRenderer, which at the moment doesn't do > anything > > other than the defaults (and it still makes a picture which is a good > sign > > :-) > > > > However I don't quite understand what I need to do to override the > > makeAppearance method. I found the makeAppearance method in > ShadowTypeJ3D, > > which and it looks like I should just be able to do a > > "material.setLightingEnable(false)" all the time to turn shading off, but > > I'm not clear on where to put this method..... there are a bunch of these > > Shadow* classes, and I'm really not clear on which one does what; e.g. > I've > > got > > ShadowUnshadedRealTupleTypeJ3D, ShadowUnshadedRealTypeJ3D, > > ShadowUnshadedFunctionTypeJ3D..... > > > > You're right, this isn't a day at the beach, but since all I really want > to > > do is change one small aspect of the rendering, it seems I ought be be > able > > to just create the skeleton and change "one small thing". But I can't > > figure out quite what that is.... > > > > Thanks in advance for any help. > > > > Donna L. Gresh, Ph.D. > > IBM T.J. Watson Research Center > > (914) 945-2472 > > http://www.research.ibm.com/people/g/donnagresh > > gresh@xxxxxxxxxx > > > > > > Bill Hibbard > > <hibbard@facstaff To: Donna L > Gresh/Watson/IBM@IBMUS > > .wisc.edu> cc: > visad-list@xxxxxxxxxxxxx > > Sent by: Subject: Re: controlling > shading > > billh@xxxxxxxxx.e > > du > > > > > > 12/19/2002 12:46 > > PM > > > > > > Hi Donna, > > > > > I am using java3D to render a flat surface (for color interpolation > > > reasons) and would like to turn off shading, since it sometimes relects > > > light somewhat strangely. I saw references in the mailing list archive > to > > > gouraud and flat shading, but I could not figure out how one can set > > these. > > > Thanks in advance--- > > > > Texture mapping uses flat shading, so you can get it > > with GraphicsModeControl.setTextureEnable(true). This > > does not work for IrregularSet domains, and will give > > you "blocky" pixels. > > > > You can explicitly control shading by creating a custom > > DataRenderer (see tutorial - no day at the beach) that > > uses ShadowTypes that override the makeAppearance() > > method of ShadowTypeJ3D. Shading is controlled in the > > Material used in the Appearence. > > > > Writing a custom DataRenderer will take you out of the > > realm of a casual user. > > > > Cheers, > > Bill
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