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You are absolubly right.
I mastked in adding only one transform group.
In fact I had to add another Transform group wich puts the shape ahead of the camera.
Thanks.
-------Original Message-------
Date: lundi 15 mars 2004 18:19:04
Subject: Re: [JAVA3D] Avatar in front of My Camera. Please example(s) source codes
I'm not sure what your problem is. You have to add your avatars Shape3D to
your ViewPlatforms TransformGroup using an additional TransformGroup which
positions this Shape3D in some distance to your "camera" (e.g. one meter
away).
On Mon, 15 Mar 2004 11:20:40 +0100, Thierry Milard (free)
> Hello java3D people.
>
> I have been discovering this java3D mature API.
>
> I like it.
>
> Nevertheless I have been strugling for over a week (shame on me) to
>
> add in front of my 'Camera' of little shape/avatar that will pretent to
> be
> the guy walking along
>
> the 3D Scene.
>
> I Tried a few thing (thanks Rolf for the code) but it seems I can't never
> see my shape/avatar
>
> I have the Semlman book but I can't sem to find a good and simple example
>
> with the 'avatar' issue.
>
> Has someone a code example to help me ?
>
>
>
> thanks
>
> Thierry, Paris, France
>
>
>
> -------Original Message-------
>
>
>
>
>
> Hi Thierry,
>
> to 1.) thats what I meant...imagine any shooter, independent of the
>
> direction you see the cross-hairs (graticule...)
>
> ...that cross hair is (could be) a shape3d which is added to
>
> the ViewBranchGraph...->2.)
>
> 2.) eg a built (and the adding of the shape3D) of a viewBranch is in
>
> that Method:
>
> private BranchGroup buildViewBranch(Canvas3D can3D, float backClip){
>
> BranchGroup viewBG=new BranchGroup();
>
> Transform3D setStartPos=new Transform3D();
>
> setStartPos.set(new Vector3d(0.0,0.0,0.0));
>
> viewTG=new TransformGroup(setStartPos);
>
> viewTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
>
>
>
> viewTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
>
>
>
> ViewPlatform vpf=new ViewPlatform();
>
> viewTG.addChild(vpf);
>
> viewBG.addChild(viewTG);
>
> View view=new View();
>
> PhysicalBody pBody=new PhysicalBody();
>
> PhysicalEnvironment umgebung=new PhysicalEnvironment();
>
> view.setPhysicalBody(pBody);
>
> view.setPhysicalEnvironment(umgebung);
>
> view.addCanvas3D(can3D);
>
> view.setBackClipDistance(backClip);
>
> view.attachViewPlatform(vpf);
>
>
>
> return viewBG;
>
> }
>
>
>
> //[in the most j3d examples the building of the viewBranchGraph is done
>
> by using of SimpleUniverse, but this is a bit too limited...]
>
>
>
> in the initializing Method is written:
>
>
>
> virtUniverse=new VirtualUniverse();
>
> locale=new Locale(virtUniverse);
>
> viewPosition=new BranchGroup();
>
> viewPosition=buildViewBranch(c,viewRange);
>
> viewTG.addChild(CROSSHAIR_SHAPE3D);
>
> viewPosition.compile();
>
> locale.addBranchGraph(viewPosition);
>
>
>
> this could explain what I meant....
>
>
>
> if you talking about "Buch" you maybe mean a german-tongued book...
>
> the onliest I know is CliXX a good one for starting up with j3d
>
>
> in english tongue there loads more! For starting I would adwise the
>
> sun tutorial which absolutley exact explain how to use j3d..starting with
>
> nice and tiny examples.....and also explaining exactly what a
>
> ViewBranchGraph is
>
>
>
> so in the hope I had helped you,
>
> best regards
>
> rolf
>
>
>
> PS I am absolutley a non proffesional j3d user !!! just a hobby...so
>
> there're could
>
> be some better explanations, solutions than mine....
>
>
>
>
>
>
>
> Thierry Milard (free) wrote:
>
>
>
>> Rolf,
>
>> I am relativeny new to java3D (2 months) [and the 3D].
>
>> I find this API very nice and ... surprisingly quite mature.
>
>>
>
>> I am _also_ looking for a way to *detect* some specific *shapes*
>
>> are in the *camera* "view Frustrum"(I think this is the name....).
>
>> I am interested in your solution.
>
>>
>
>> Please could you be more "beginer understandable".
>
>> When you say you are" adding the containing Branchgroup to the view
>
>> BranchGraph":
>
>> 1) By the word "Branchgroup"do you mean the BG witch contains the shapes
>
>> you want to detects ?
>
>> 2) What exactly do you mean by 'adding *to* the *ViewBranchGraph*' ?
>
>> This code is what you meant ?
>
>> theviewBranchGraph.addChild(theBranchGrouptodetect ); ??
>
>> Thanks Rolf for your time.
>
>> By the way if you know of a buch of code please don't hesitate to give
>
>> the url.
>
>> Thierry
>
>> /-------Original Message-------/
>
>>
>
>> /*From:*/ Discussion list for Java 3D API
>
>
>> /*Date:*/ mercredi 10 mars 2004 20:33:12
>
>
>> /*Subject:*/ Re: [JAVA3D] can you tell if an object is in the current
>
>> view?
>
>>
>
>> Hi Kevin,
>
>> I'd managed this in adding the containing Branchgroup to the view
>
>> BranchGraph, so everey transform, which change the vieplatform is also
>
>> made for the "Corne-Object" I did it for an arrow to show the direction
>
>> to the desired target.
>
>> best regards
>
>> rolf
>
>>
>
>> Kevin wrote:
>
>>
>
>> >All,
>
>> >
>
>> >Is there a way to find out if an object is in the current View or not?
>
>> >I have an object that I would like to stay on the edge of the screen no
>
>> >matter how I resize the window or move the viewpoint. Is there a better
>
>> >or different way to do what I am wanting to do?
>
>> >
>
>> >Any help would be much appreciated.
>
>> >
>
>> >kddubb
>
>> >
>
>>
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>> >
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>>
>
>>
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> --
>
> Rolf Gabler-Mieck
>
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