Re: [JAVA3D] Missing d3d8.dll on Win 2K professional

Hi, Have you insatlled directX 8 ? If not, you will need to go to the m$ site and download it. You will probably only find dx9 now though as that is the latest version. Cheers, Brad Khanh wrote: Dear, I am new to Java 3D. When I compile and run my java 3D program, it does not run

Re: [JAVA3D] Rotating objects at the same time and keeping themtogether

Hi, ALl you need to do is but both objects under teh same transforn group then rotate that single group. Your scene graph need to look like this: BG (root) | TG (apply rotate here) | BG || Obj1Obj2 Cheers, Brad Dani F. wrote: Hi again everybody. I have a problem when

Re: [JAVA3D] Rotating objects at the same time and keeping themtogether

Hi, To change the 'origin' of the rotation you can use a TG above your objects to move them. The sg would look like this: TG (for rotating) | TG (move your objects here to effect rotation origin) | BG (containing you objects) Cheers, Brad Dani F. wrote: Thanks for your answer. I have

Re: [JAVA3D] adding vertex to existing Geometry

Hi, You can add a new vertex to a geometry array by using by-ref geometry and the valid vertex count. As the simplest example, say you start with 4 vertices and want to add one more. If you use a by-ref aray for your coords you could make the array size 6 and initialy set the valid vetex count

Re: [JAVA3D] Fill color

Hi, Depending on the detail you need the easiest way would be to use a texture to show NZ etc. If you need 'real' geometry for the continents etc then you would probably be best not to try and place the continents over a sphere. Instead you shoudd use a geo-transform libary to map real earth

Re: [JAVA3D] Memory Problem

Hi, In short, changing your import statemnts will have no effect on the amount of memory used or the speed of your application. Cheers, Brad This Email may contain confidential and/or privileged information and is

Re: [JAVA3D] LineArray with Materials

Hi, Have you included per-vertex normals in your line array data? For a light geomtery to be visible you must have a light source, a material and vertex normals. Cheers, Brad Jasmine Kwok wrote: Have anyone tried working with LineArray and Material? My line disappears once i do not set

Re: [JAVA3D] LineArray with Materials

mean? Thanks! - Original Message - From: Brad Christiansen [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 26, 2003 3:45 PM Subject: Re: [JAVA3D] LineArray with Materials Hi, Have you included per-vertex normals in your line array data? For a light

Re: [JAVA3D] Instantiating GeometryArrays without knowing theirsize

Hi, I have used Integer.MAX_VAL as the vertex count in the constructor. This works but I have no idea if it is wasting any resources. It seems not to be but I haven't investigated closely yet. I actualy asked a question a little while back if this wasted any resources and rescieved no answers.

Re: [JAVA3D] Shapes Textures

Hi, The standard way is to use a shape3D for each tile. This also helps java3D to cull the geometries etc before sending them to the vid card. This culling, from my understanding, is only done on a Shape3D basis. Thus if any part of the Shape3D is visible the hole thing is sent to the card. If

Re: [JAVA3D] Combining LineArray into a single object

Hi, You can add multiple geometries (LineArrays) to a single Shape3D (see addGeometry()). All these geometries will then share the same appearance and and transforms applied aboev the Shape3D in the scene graph will be applied to the Shape3D as a whole. Cheers, Brad Jasmine Kwok wrote: Hi

Re: [JAVA3D] Changing a by-ref coordinate array

count of the strip array. But, if you make the initial geometry array large enough (i.e. set to a known maximum) at construction, you can then use setStripVertexCounts to set the current valid strip counts. Sean -Original Message- From: Brad Christiansen [mailto:[EMAIL

[JAVA3D] A little help with code - setCoordinates

throwing away an old one and recreating a new one each time. Hope this helps. Cheers, Brad greg baboolal wrote: Hi Brad, I will look into it, will this work even if the new array is not the same length (greater than) the original? Cheers, Greg. --- Brad Christiansen [EMAIL PROTECTED

[JAVA3D] Changing a by-ref coordinate array

Hi, I am creating a line using a LineStripArray in by-ref mode. If the number of points(*3) in the line exceed the size of my coordinate array then i need to set a new coordinate array with a new (larger) size. When I am doing this the vertex count is not increasing. Basicaly the problem I am

Re: [JAVA3D] A little help with code - setCoordinates

Hi, If you keep a referance to your original coord array then you can simply change the values in that array directly in the updateData() method. It goes something like the 'kinda-code' snippet below. If you use BY_REF correctly you shouldn't need to set anything other than the values in your

Re: [JAVA3D] Need help with transparency

Hi, You will need to suplpy much more info than that. The line of you code you included, when used properly definately does work (I use it myself). Are you setting the calling: eg TransparencyAttributes ta = new TransparencyAttributes(TransparencyAttributes.NICEST, 0.7f); Appearance app =

Re: [JAVA3D] X3D M6 Problems: Web3d.org's HelloWorld.wrl WorkswithSun's VRML Loaders

Just introduce your own ban. Its from P.Flavin, its atacking the work of the x3d guys for no apparent reason, ignore and delete. Works for me. Michael P. McCutcheon wrote: Can someone ban this guy from the list? P. Flavin wrote: Problem files with the new X3D Loaders often are NO

Re: [JAVA3D] texture coordinate set

Hi CHris, A texCoordSet is a set of textuer coordinates for the geometry. When you do multi texturing you can specify several sets fo texture coords, and then you can specify which set of texture coords to use with each texture unit. To specify which set of tex coords to use with each tex unit

[JAVA3D] Bug Report on texture loader?

Hi, I may have found a bug in Java3D and have included a very simple test case. The problem is this: I create a buffered image then use the texture loader to get a texture (using the BY_REFERENCE flag). I then retrieve the BufferedImage from the ImageComponent2D and draw on it using Java2D

Re: [JAVA3D] Method too Large! Please Explain!

Hi, I think I must misunderstand what you are saying about array sizes but I very often initilise arrays with MUCH more than 7000 elements. The following code fills a double array with a million random doubles in one method with no issues. Cheers, Brad public class Test { public Test() {

[JAVA3D] Texture by Reference

Hi, I am trying to investigate how texture by reference works in J3D but can't find any info / tutorials on how it works / how to use it. Can anyone point me at any info on this? Cheers, Brad This Email may contain

Re: [JAVA3D] Chess Board Demo

Hi, I am getting a 'bad major version number' when trying to run the applet in netscape 4.79. Full error: # Applet exception: error: java.lang.ClassFormatError: Bad major version number java.lang.ClassFormatError: Bad major version number at java.lang.ClassLoader.defineClass(Compiled Code)

Re: [JAVA3D] Chess Board Demo

Hi, I just tried it in IE also (version 6) and recieved another error. This time I did see the chess borad on screen but the animation was extremely jerky (only about 1 FPS). I have the 1.4.0_01 plug in, J3D 1.3 and a Geforce2 MX card. Cheers, Brad Sound bank not set.

[JAVA3D] Natiev compilation benchmarks

Hi, I was wondering if anybody had some figures available on wether using a native compiler for a Java3D (eg ?JRokit? ... if that is one of them) application (and Java apps in general) improved performance, and by how much. Failing any benchmark results, what have been peoples impressions.

Re: [JAVA3D] global coordinates after transformation

Hi, You use the method get getLocalToVworld() on the shape. Have a read of the javadoc for this method for the details. Cheers, Brad Jens Allendörfer wrote: Hi everyone, I'm currently working with a scene built up with the ObjectFile loader. That means that I have several Shape3Ds in the

Re: [JAVA3D] Can I find the location for any Shape3D in a Locale?

Hi, I am not sure I realy understand your question, but, if you wish to convert a nodes location from local coordinates to world coordinates you need to use the getLocalToVWorld() method of the node in question. This will give you the transform required to convert that nodes local coordinates

Re: [JAVA3D] Out of topic: How to store and serialize imageseconomically

Hi, I am not sure how this fits in with what you want, but you can compress the results of object serilization. Just wrap your ObjectOutputStream in a zip or gzip output stream. eg ByteArrayOutputStream baos = new ByteArrayOutputStream(); GZIPOutputStream gzos = new GZIPOutputStream(baos);

[JAVA3D] Determining / Limiting a rotation

Hi, I wish to limit the a rotation around the X axis to a maximum of 90 degrees (absolute value, can be +'ve or -'ve 90). The following code is what I am using to do the rotation based on input from the navigation system: t3d = new Transform3D(); if(direction == NEGATIVE) {

Re: [JAVA3D] Java 3D API???

Hi, You should probably install Java3D as well : ) It is a seperate download to the standard JDK. Once you have downloaded and installed Java 3D you will have to add its .jar files to Forte's class path (j3dcore.jar, j3dutils.jar, j3daudio.jar and vecmath.jar). Once installed these can be

Re: [JAVA3D] Directional Light

Hi, Can you not simply remove orignal d.light form the scene and add a new one which points in the new direction? Cheers, Brad Stoney Jackson wrote: Sorry, I think I've made a mistake, the directional light is actually point TO original from the location you specified. But how can I

Re: [JAVA3D] Always visible???

Hi, Use: JPopupMenu.setDefaultLightWeightPopupEnabled(false); Also look at j3d.org for tips on combing J3D and swing. Cheers, Brad Gael wrote: Hi everyone, My question is about the canvas3d object. Everytime I added a popup menu or a menu bar to my application using, in part, a canvas3d

Re: [JAVA3D] Using getSceneGraphPath() with the PickTool

Hi, Hvae you enabled pick reporting on all the nodes between the picked leaf and the root? Only those nodes that have pick reporting enabled will show up in the scene graph path (I think.. a while since I looked at picking). Cheers, Brad Gerald (Ted) Quon wrote: Hi, I am trying to use

Re: [JAVA3D] a new applet using java3d available online

Hi, Just thought I would let you know that it runs well on my machine (no problems at all). Looks great. Cheers, Brad Asaf Dafner wrote: Hi all, The following site http://cochise.mta.ac.il/~dune/ includes an applet that uses Java3d, ( http://cochise.mta.ac.il/~dune/lab.html ). The site

Re: [JAVA3D]

Hi, I think this is possible. One example (off the top of my head) would be if you wanted to tile a texture accross the geometry (please correct me here as I am a bit of a novice). In this case your texture coordinate array may only have 4 values ( 0,0 0,1 1,0 1,1 ), and then via the indexes,

Re: [JAVA3D] Alpha terrain splatting

Looks great David! David Yazel wrote: Thanks to some help from Kelvin from Sun we got terrain splatting working. You need to use an ordered group, not a decal group if you want to get a zbuffer test of =. The decal group disables the zbuffer test completely. Here are some screenshots:

Re: [JAVA3D] Graphics card

Hi, Just a quick note on the 3 cards you have for a trial. Each of these cards, when they where first released, where on the lowest end of the performance scale (eg TNT2 m64 was the cheap, slowest performing TNT2 card). The secound thin I would like to point out is that all of these cards are

Re: [JAVA3D] [Java3D] Strange result in test code

Hi, You may find this is due to the JIT compiler used in the Hot Spot JVM. I don't have a very good understanding of this area but this is my quess as to what is happening. loop 1: VM interprates byte code 'as is' loops 2: VM realises the loop is a 'hot spot' so executes the loop using native

Re: [JAVA3D] Graphics card

Hi, I am not sure about the specifics of these cards for Java3D, but for general openGL and DirectX performance the current 'king' is the Geforce 4 ti 4600. As soon as the Raedon 9700 is available in stores (should be any time now, if not already) then that will be the fastest by quite a bit.

[JAVA3D] Performance of Culling was Normals considered when rendering without light?

Hi, I have a related question, it seems that if you wanted to show the 'back face' of some polygons, you have too options, reverse the winding of your polygon definitions (which may involve recreating/indexing you geometry) or you could use PolygonAttributes.CULL_FRONT. My question is, is

Re: [JAVA3D] Key Event's and Behaviors

Hi, I have included some basic code that should do what you are after. The processStimulus() method simply goes through all the criteria looking for KeyEvents (occur when a key is pressed, released and typed) then calls a seperate method to process them. This seperate method, processKeyEvent()

Re: [JAVA3D] Bringing the Canvas 3D into Focus

Hi, One solution that hasn't been mentioned, and can be more useful (though I haven't tried it with a canvas3d) is to stop your other components getting the focus in the first place. This can be achieved by the JComponent method: public void setRequestFocusEnabled(boolean requestFocusEnabled)

Re: [JAVA3D] Identifying objects and JPopupMenu!

Hi, I am note quite sure I understand you question but I will attempt an answer anyway. 1) You can distinguish between too spherses based on there position as you said. If you want to add your own information about how each sphere is dfferent you can user the user data member of the Node

Re: [JAVA3D] ToolTip!

Hi, I am a bit of a novice at Java3D so this might not be a very good idea, but I think you could get tooltips to work along these lines: Add a mouse listener and listen for move movements on your Canvas3D. When you detect that a movement hasn't occured for a set period of time you could do a

[JAVA3D] OpenGL and D3D version of Java3D together

Hi, The question about having both vid. card drivers on the same machine made mw wonder about this: Is it possible to install both the openGL and directX versions of java3D on the same JRE/JDK? Many games have/used to have, a choice to use either openGL or directX for rendering. This

Re: [JAVA3D] Seen GeoSim yet?

Hi, I am really interested in having a look at this project. Sounds very interesting. I have downloaded all the files and attempted to run them as you suggested. I get the following error when I do this: C:\j3d\geosimc:\j2sdk1.4.0\bin\java -Xms100m -Xmx200m -jar Final_GeoSim.jar count = 0,

Re: [JAVA3D] Performance Experience

Hi, Can anyone give me a run down of how a vid. cards memory is used? For example, a Geforece4 has 128 meg memory. How is this memory used? Is it shared between the framebuffer geometry and textures, is it just used for for texturs etc Cheers, Brad John Wright wrote: Our primary trick is to

Re: [JAVA3D] loaders for Java3d

Hi, They have a selection of loaders on j3d.org at: http://www.j3d.org/utilities/loaders.html They have loaders for ac3d, vrml, 3ds, dfx, obj etc etc Cheers, Brad Olaf Ringleb wrote: Hi, I'm searching for ANY loaders which are available for Java3d at the time. (e.g. 3dsmax, x3d, BIFS,

Re: [JAVA3D] Terrain Mapping

Hi, The list you mentioned does exist but is not used a great deal. You can find it on j3d.org. They also have some terrain generation code there that you might find useful. I am generating terrain from lat/lon/alt data. The basic approach I have taken so far is: Using a goetransforms libary I

Re: [JAVA3D] Not able to run j3d

Hi, Do you have the latest drivers for you video card installed? Cheers, Brad Jayasree Tangirala wrote: Hi, I have successfully compiled but am unable to run the j3d programs. The error message says: Exception in thread main java.lang.UnsatisfiedLinkError: C:\Program Files\Java

Re: [JAVA3D] Problem extending ViewPlatformAWTBehavior, KeyEvents

Hi, Not directly what you want but I have had problems using System.currentTimeMillis() in other applications. As you say the resolution is very poor (about 10 millisecs). I changed to using the J3DTimer. Atleast on NT I have found this to give a much finer and more accurate picture of the

[JAVA3D] Toggling Object Visibility

Hi, What is the best approach for toggeling the visibility of Shape3D's in a scene? The user may want to very quickly switch between displaying and not displaying various shapes in a scene. I considered adding and removing the objects from the scenegraph but this seems to be overkill. Is there

[JAVA3D] Problem with label overlay

Hi, I have been attempting to use the overlay code from the j3d.org repository. After many failed attempts to get it to work I went back and did some testing on the demo code. I downloaded the binary (compiled) distribution and run the LabelDemo. This worked fine. I then tried recompiling just

Re: [JAVA3D] collisions

Hi, There is some sample code and discussions at j3d.org. Cheers, Brad Mauro Dito wrote: i've realized a Shape3D object representing an ancient theatre. Now in the Virtual universe containing it, i want to use collision detection with this Shape3D and terrain following. Could someone

Re: [JAVA3D] Simple example of image plate alight platform geometry

Hi, Thanks for this code David, it has been a huge help. One question though, how do I make the overlays transparent? I have tried doing the following to your code with no luck: changed the type of the BuffredImage to TYPE_INT_ARGB (from INT_RGB) changed the color used to fill the background

[JAVA3D] another simple question

Hi, I have two points A and B. I need to find a point C that is a certain percentage P along the line from a to b. What formula do I use to determine C given A, B and P ? eg A_C__B where A might be (0,0,0) , B might be (2,6,3) and C is 20% along the line between

[JAVA3D] very simple question

Hi, What is the best way to get the distance between two points? ie I want the straight line distance between (0.3, 3, -5) and (6, -3.54, 75) Cheers, Brad This Email may contain confidential and/or privileged

Re: [JAVA3D] Multi User Server

Hi, I am not sure I understand your issue completely, but for the following issue: Another thread handles sending these queued messages to players within range of a message origination, in a FIFO order. That particular thread I'm having some problems with. I need it to run all the time, or

[JAVA3D] install works.. atlast!

Hi, Just thought I would let you know that the new install worked for me first time with no problems. I was one of the people with the 'no suitable vm' problem with the previous beta 1 install. Thanks for fixing this. It is great not to have to do a manual extract and copy of the j3d files. (I

[JAVA3D] Bug adding color cube

Hi, I have encounted an error in an app I was writing and have narrowed it down to an extremely basic test case (code is inline at the end). The code below uses a SimpleUniverse to display a ColorCube. If I uncomment the line adding the color cube to a branch group then the app terminates with

Re: [JAVA3D] Java3D 1.3Beta

Hi, I haven't been able to get the 1.3b installer to work at all on my NT machine. I followed these instructions (mailed to this list) and all is good: rename the install file .exe to .zip you must extract from it the files(shearch them in): J3D.dll j3daudio.dll J3DUtils.dll j3daudio.jar

[JAVA3D] Geometry Types

Hi, I was wondering if anybody could point me at a good (detailed) discussion of the advantages and disadvantages of the various geometry array types. I would like info on things such as the relative performance and memory usage of indexed versus non index, triangle fan vs triangle strip etc. I

Re: [JAVA3D] CubeTest

Hi, I am pretty new to this so others will proabably correct me, but, looks like your some of the cubes normals are facing the wrong way. To check if this is what is happening try: Appearance a = new Appearance(); PolygonAttributes pa = new PolygonAttributes(); pa.setCullFace(pa.CULL_NONE);

[JAVA3D] 1.3b Install Problems

Hi, I have been trying to install: java3d-1_3-beta1-win-directx-sdk.exe and I get the following message: Could not find a suitable Java Virtual Machine on your system ... Try re-installing the JVM or change the VM used by the application. I already had jdk1.3.1 installed with j3d 1.2.1 and