[JAVA3D] Query on asynchronous nature of Java3D.

Hi again all, As I have mentioned in the past, we have a rendering engine that supports skinned articulated rigid bodies. We have used indexed geometry for the inter-joint polygons and by-copy geometries everywhere else (with judicious use of our own data caching &c). Our current problem is due

[JAVA3D] is there ColorPathInterpolator ?

Title: [JAVA3D] is there ColorPathInterpolator ? Hello all. I want to use ColorPathInterpolator but I don't know it is possible and there is such class. ColorInterpolator in Java3D have its startColor and endColor. I want to use multi-knot, N, so that, startColor=Color1, Color2, Color3, .

Re: [JAVA3D] Unsatisfied link error [buildGA failed]

It looks like the native method: _Java_javax_media_j3d_GeometryArrayRetained_buildGA was not found when J3d wanted to call it. This method is in J3d.dll which means that most likely j3d.dll was not found. Have then follow the generic instructions for "Unsatisfied link error" that you can find

[JAVA3D] Retrieving Shape face vertex information

Im currently carrying out a project where one task requires that i calculate the surface normal of a face from a shape selected by the user. The shape may be rotated/translated/etc before picking. To do this i want to be able to pick a face, return 3 of the vertices making up the corners of the fa

Re: [JAVA3D] Mouse behaviors

HI Zak, It looks like you have not added the Behavior to the scene graph. You should call ViewingPlatform.setViewPlatformBehavior to add the behavior to the scene. Rgds Paul >Do you have an example on how this works? I have tried it and it keeps spitting this out. It happens once I try to mo

Re: [JAVA3D] add behaviour to a live scene

liming, The solution is simple. It is true: the only thing that can be added to a live scene is a branch group. But that is not as restrictive as it may seem at first because you can add anything to the branchgroup while it is still not live and then add the branch group to the live scene. So, as

Re: [JAVA3D] HELP! Shading Geometry with color by vertex?

My understanding is that lighting is that each type of light source effects a different part of the material. The vertex color components are multiplied with the light source and appropriate material.. Sorry I don't have my notes with me... red = vertex_red * (ambient_red * material_diffuse_red)

Re: [JAVA3D] HELP! Shading Geometry with color by vertex?

--- > I guess I've had this trouble for a long time, it's just now getting > annoying enough to force me to ask about it. > :) sounds familiar > When I create IndexedGeometryArray's with per-vertex coloring and try to use > a Material in the Appearance node, the lighting/colorin

Re: [JAVA3D] HELP! Shading Geometry with color by vertex?

> From: Axel Groß <[EMAIL PROTECTED]> > > --- > > I guess I've had this trouble for a long time, it's just now getting > > annoying enough to force me to ask about it. > > > > :) sounds familiar > > > When I create IndexedGeometryArray's with per-vertex coloring and > try to use

Re: [JAVA3D] HELP! Shading Geometry with color by vertex?

I would assume your correct, but if I change the colors in the Material object, I definitely get a different appearance at runtime, and it's very obvious that it's trying to render the Material color as well as the geometry colors. Thanks Don -Original Message- From: Axel Groß [mailto:[E

[JAVA3D] New Behaviors?

since i suscribe to the discussion list...many people talk about OrbitBehavior and ViewPlatformBehavior... but i can't manage de find docs about them... can someone help me? === To unsubscribe, send email to [EMAIL PROTECTE

[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

Re: [JAVA3D] Mouse behaviors

Do you have an example on how this works? I have tried it and it keeps spitting this out. It happens once I try to move the globe.   Exception occurred during event dispatching: java.lang.NullPointerException:    at com.sun.j3d.utils.behaviors.vp.VPMouseBehavior.mousePressed(VPMouseBeha

[JAVA3D] HELP! Shading Geometry with color by vertex?

I guess I've had this trouble for a long time, it's just now getting annoying enough to force me to ask about it. When I create IndexedGeometryArray's with per-vertex coloring and try to use a Material in the Appearance node, the lighting/coloring gets all screwed up. The coloring is fine if I do

Re: [JAVA3D] Mouse behaviors

> Zak wrote: > > Hello all. > > I am trying to do the following. I need to have a viewer to look at > one spot and stay looking at that spot. I have > an earth that i always want to look at. Now I want to be able to > rotate,zoom, and translate the earth with out changing > the earths transform bu

Re: [JAVA3D] Mouse behaviors

HI Zak, Take a look at the com.sun.j3d.utils.behaviors.vp.OrbitBehavior in Java3D 1.2.1 beta 2. It does exactly what you describe... Rgds Paul -- Paul Byrne Email : [EMAIL PROTECTED] Sun MicrosystemsP

Re: [JAVA3D] Dithering in 256 colors ( Windows )

Hi Pedro, Java3D did not support 256 color mode display. It is up to the opengl driver to handle this case, some OGL driver will fail to create Canvas3D, other will display strange color like this. In fact, the D3D version of Java3D will automatically switch to fullscreen 16 bit color mode in

[JAVA3D] Bug 4363990 is still broken

I have attached a program demonstrating that a Texture image and TransformGroup don't update synchronously. A cylinder rotates about its y axis and an image of a small blue rectangle on a yellow background is created each frame, put into an ImageComponent2D and then into the Texture of the cylinde

[JAVA3D] Texture memory use of GIF vs. RGB

I have a general Java3D question, that may also relate to to hardware. If I load up a RGB texture that is, say, 256 x 256, that is equal to 65535*RGB = ~ 192 K of texture memory (non-mipmapped) If I load up a GIF texture that is the same 256 x 256, that is equal to 65535 * 8-bit image = 65535 of

Re: [JAVA3D] OpenGL Hardware Acceleration

I have seen similar behavior under Windows 2000 where a Java 3D program runs with software rendering while an OpenGL program runs with hardware acceleration. In addition the Java 3D program causes all the windows on the screen to redraw frequently at random intervals (maybe some weird artifact of

[JAVA3D] Mouse behaviors

Hello all.   I am trying to do the following. I need to have a viewer to look at one spot and stay looking at that spot. I have an earth that i always want to look at. Now I want to be able to rotate,zoom, and translate the earth with out changing the earths transform but the viewers.   I

Re: [JAVA3D] Memory question

> From: Qiuli Sun <[EMAIL PROTECTED]> > > I have a java3D applet. I used NT task manager to see how much memory it > consumed. Originally, the appletviewer used 21M. After I created a matrix of > 15000 x 15000, the appletviewer used 81M. Then I deleted the matrix by the > setting its reference to

[JAVA3D] Dithering in 256 colors ( Windows )

Hi. I work with Java3D Windows version OpenGL in a Windows NT 4.0 system. I have noticed that JAVA3D appears not to have color dithering. That is: If i have a display of 256 colors, the colors of the examples included in the distribution ( and so for any example program i make ) display very stran

Re: [JAVA3D] OrbitBehavior

Hi Daniel, Orbit Behavior is designed to move the ViewingPlatform around a center of rotation while always looking at the center of rotation. So it won't help you with a Fly behavior, however The J3dFly demo application we are about to ship includes some extra behaviors ( Fly, Hover and Driv

[JAVA3D] Memory question

Hi, I have a java3D applet. I used NT task manager to see how much memory it consumed. Originally, the appletviewer used 21M. After I created a matrix of 15000 x 15000, the appletviewer used 81M. Then I deleted the matrix by the setting its reference to be null and I called Sytem.gc(). Five minut

Re: [JAVA3D] Java3d, Java Sound, and MP3's

My teammate sent this question yesterday, but we haven't heard anything back yet. The JavaDocs for the JavaSoundMixer (distributed in the Sun J3D utils) says: "The JavaSoundMixer Class defines an audio output device that accesses JavaSound JavaSoundMixer functionality Hae stream data" I'm not qu

Re: [JAVA3D] Viewer direction

Hello !! I think that attaching the ViewPlatform under a TG with a Transform3d (rotate the corresponding degrees all the ViewPlatform) should work. Dani 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

[JAVA3D] OrbitBehavior

I found OrbitBehavior in the utils source jar. It looks like something that would be useful to me, except that I want to navigate by keypresses instead of mouse movement. What I'm trying to do is create a behavior that would move the view to create the illusion that the object in view is being c

[JAVA3D] Alpha with loopCount = 0

Title: Alpha with loopCount = 0 // source line Alpha alpha = new Alpha (0, Alpha.INCREASING_ENABLE, 0, 0, 0, 0, 0, 0, 0, 0); PositionInterpolator posInt = new PositionInterpolator (alpha, objMove); // I make positionInterpolator to move some object as above. I thought that if I set loopCount