[JAVA3D] how to get the world coordinate of leaf nodes of a BranchGroup

Hi, I build a BranchGroup that contains one or more TransformGroups, then these TransformGroups contain more children and so forth. My question is: how can I access the children nodes at the leaf end of this branchGroup? I found that the getAllChildren() method in BranchGroup can only get the chi

Re: [JAVA3D] help --- solved

I have sorted out the problem. Sorry for disturbing you. cheeers Liming === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to

[JAVA3D] help

Does anyone know what the following error message means: --- Compiler Output --- VirtualAgent.java:635: cannot resolve symbol symbol : constructor AgentInterpreterVisitor (HumanBehavior) location: class clmproject.agentBSL.AgentInterpreterVisitor

[JAVA3D] detect action

Hi, I try to schedule a sequence of actions for an avatar. All the actions are Behaviour-based animations. The problem is how I can detect if the previous action finishs or not. I can use the time parameter from Alphas to infer when an action action will complete. What I want to know is if there

[JAVA3D] how to move ViewPlatform

Hi, I built a avatar and want to put the ViewPlatform on the avatar's head, so when the avatar move the view (the scene) move too. I can position the Viewplatform on the avatar's head using the TransformGroup above the ViewPlatform and also can adjust the view direction so that it appear that the

Re: [JAVA3D] problem with removeChild()

Thank you all for replying. It seems to be a little trick. I never thought of that the index operates in such a mechanism. It should be mentioned in the api. Liming === To unsubscribe, send email to [EMAIL PROTECTED] and i

[JAVA3D] problem with removeChild()

Hi, I add seven children (Behaviour) to a BranchGroup. Then I try to remove all these children by the following codes int childNum = bg.numChildren(); for( int j =0; j= 3 at java.util.Vector.elementAt(Vector.java:417) at javax.media.j3d.GroupRetained.doRemoveChild(GroupRetained.java:3

[JAVA3D] add behaviour to a live scene

Hi, Is it possible to add a behaviour to a live scene? This problem comes from: I create an avatar and make it live in the virtual world , then later through interface (button or menu) I would like to add some behaviour to the avatar. I have tried it but there is a message displaying that "Res

[JAVA3D] Viewer direction

Hi, Does anyone know how to define a viewer's view direction? I try to make an avatar navigate in a virtual world. I think I need to attach the ViewPlatform to the avatar's head transformgroup so when the avatar moves, the scene changes. However, I did not find any method that can be used to de

Re: [JAVA3D] Canvas3D in JInternalFrame gives physical dump.

This is the problem I came across . I built  an application which i run using jdk1.3 and java3d 1.2.  Without interface the application works okay. However, when I add an interface to the application there came the problem. I add a Menu bar to the Jframe, put the Canvas in the Jframe.getContentP

[JAVA3D] a bug?

I use Transform3D get(Vector3f trans) getScale(Vector3f scale) and get(Quat4f rot) to extract rotational, translational and scale data from a transform3D matrix and then reconstruct the transformation using corresponding set methods. What make me surprise is that the two transform matrix are di

[JAVA3D] non-uniform scale interpolation - esp. to the author of the KBRotPosScaleSplinePathInterpolator CLASS

Dear all, The core class RotPosScalePathInterpolator does not support non-uniform interpolation. The RotPosScaleTCBSplinePathInterpolator or KBRotPosScaleSplinePathInterpolator classes in the Utility pack do not support such function too. I have checked the souce code of the above classes. Here

[JAVA3D] texture mapping

I try to map a human face to a indexedGeometryTriangle geometry by using theTexCoordGeneration utility class to generate the texture coordinate. However I find it is very hard to map the face to where exactly it should be. I doubt if it is possible to do accurate texture mapping with TexCoordGene

Re: [JAVA3D] use of GeometryInfo class

I have sorted out it. Thanks Liming === 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

Re: [JAVA3D] use of GeometryInfo class

I try to construct a GeometryInfo object using the following line GeometryInfo ginfo = new GeometryInfo(TRIANGLE_ARRAY); but it said that BodyParts.java:183: cannot resolve symbol symbol : variable TRIANGLE_ARRAY location: class BodyParts GeometryInfo ginfo = new GeometryInfo(TRIANGL

Re: [JAVA3D] use of IndexTriangleArray class

[0,1,2] > normals [0,1,2] > > But you can't > > Dave Yazel > > > -- > > From: Liming CHEN[SMTP:[EMAIL PROTECTED]] > > Reply To: Discussion list for Java 3D API > > Sent: Wednesday, December 20, 2000 7:56 AM > > To: [EMAIL PRO

Re: [JAVA3D] use of IndexTriangleArray class

Hi, Yazel, After reading your discussion, my question is simplified as following: If I have a geometry with 20 vertices and 38 vertex index, I am sure that there should be 20 vertex coordinates. What I want to know is how many normals and texture coordinates there should be. According to your m

[JAVA3D] use of IndexTriangleArray class

Does any one know IN DETAILS how to use the IndexTriangleArray (or say IndesGeometryArray) class? Simply spcifying a geometry with coordinates and coordinates index is easy. What make me confused is how to specify the Normal, normal index, texture coordinates and coordinate index. For example,

Re: [JAVA3D] VRML

Hi, Ole, Could you please send the vrml97.jar and vrml97Player if you have? Are you sure it is the latest version? By the way, have you used the loader to playback vrml files exported from 3DS? At the begining of this year I tried to play back character animation developed with Character Studios

Re: [JAVA3D] 3D avatars using Java3D

Hi, Shawn, I am concerned about how to animate 3D characters (built from Java3D) in a virtual environment. What approaches have you used in your project? Do you use 3DS to VRML to Java playback or directly apply motion capture data to the Java4D skeletal model? cheers Liming Kendall wrote: >

Re: [JAVA3D] 3D avatars using Java3D

According to your words, what's the best way to animate a 3D characetr built from Java3D? Is it to use 3DS -VRML-Java playback or apply motion capture data to the 3D skeletal model directly? cheers liming "Yazel, David J." wrote: > No one has ever come out and said they had developed a high p

Re: [JAVA3D] non-uniform scale

Thanks, Adams. I miss noticing that method. liming adam treat wrote: > You just... > > SomeTransform3D.setScale(new Vector3d(double x, double y, double z)); > SomeTransformGroup.setTransform(SomeTransform3D); > > adam > > --- Liming CHEN <[EMAIL PROTECTED]> wrot

[JAVA3D] non-uniform scale

Does anyone know how to deal with non-uniform scale in Java3D? I found nothing in relavant classes such Transform3D or Matrix4D(4f). I even do not know how to specify a non-uniform scale with Transform3D class. Thanks liming ==

[JAVA3D] Conversion of animation data

Does anyone know how to convert geometric and animation data ( typically rotation Quaternions) specified in another coordinate system to Java3D coordinate system? I can apply these data directly in Java3D and use Transfor3D and TransforGroup to transform it in general. However, I am not sure that

Re: [JAVA3D] How to use 3ds max animation data in Java3D

> > Please create a _ simple _ walk animation, export it as > VRML-97 and post the results on the Web so I and others > can look at it and work on a solution ... and post your own > solution if you have one and are willing to share it. I attach a simple-walking VRML97 file that is exported from

Re: [JAVA3D] Quat4f problem

It should be like that. The values you print have been normalized. to see this, you can add x*x + y*y + z*z +w*w = 1. liming Mojtaba Hosseini wrote: > Hello all, > I'm having some problems using the Quat4f class. It seems that the > values I put into Quat4f somehow get changed. To demonstrate

Re: [JAVA3D] How to use 3ds max animation data in Java3D

Hi, Giles (or Alan), Thank you for your replying. > I have not used Character Studio but we commonly use 3DSMax animation data > through a VRML2.0 export. We use the Xj3D loader available at: > http://www.web3d.org/WorkingGroups/vrml-java3d/ > I have tried your approach, that is using VRML2.0

[JAVA3D] How to use 3ds max animation data in Java3D

Dear all, Does anyone implement human animation in Java3D using animation data exported from 3DS MAX and Character Studio? What format do you use to export the animation data from 3DS MAX? Thanks in advance liming === To

[JAVA3D] help - Quaternion manipulation

Dear all, Is there a function (or method) to modify an Quaternion q so it is on same side of hypersphere as another Quaternion q1? In 3DS MAX SDK there is a method in Quat class : Quat& MakeClosest(const Quat& qto); Could anyone tell me how to achieve this in Java3D? Thanks in advance Limin

[JAVA3D] about loading animation from 3D MAX CHARACTER Studio

dear all, Does anyone know how to load animation files produced by 3D MAX Character Studio from Java3D? cheers liming === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAV

[JAVA3D] RotationPathInterpolator for Animation

Hello, I am currently using RotationPathInterpolator to animate virtual human. I first build each part of the human body e.g. legs, arms etc. and then use transformgroup(mainly translations) to form a articulated figure. However, when I use RotationPath Interpolator to animate the motion of each