Re: [JAVA3D] Class cast Exception // Important

2003-01-31 Thread greg baboolal
As a remedial solution, why don't you set the TriangleFanArray's userData with a ref to the Cone object, i.e ta.setUserdata(someCone), assuming the two are associated with each other. ps. did you ever post your solution to the setcapabilites stuff you claimed to be the last 1% :) --- "Brobbey,Isa

[JAVA3D] DDS textures in java3d ?

2003-01-31 Thread Artur Biesiadowski
I know that they are not supported directly (moved to GPU), but is there any simple loader for them, just unpacking to plain image ? This question was already asked one year ago and there was not utility for that back then. How does it look now ? Artur ===

[JAVA3D] Single 3D point in space

2003-01-31 Thread Zak Nixon
If I want to add a single point in 3D space, is there anything else I can use to draw this rather than using an entire PointArray with one point. Thanks Zak === To unsubscribe, send email to [EMAIL PROTECTED] and include in t

[JAVA3D] Behavior related

2003-01-31 Thread Frank Bellegarde
Hi all, I've got some problem using the class behavior to detect clicks on shapes. It seems that when the viewer gets very near to the object, this object can't be clicked. That's really bothering me. If anyone could give me some insights... Thanks Frank Bellegarde _

Re: [JAVA3D] advice and tips on a tree - more questions

2003-01-31 Thread Lan Wu-Cavener
I just found another strange problem with my tree texture mapping. When a tree get very close to the viewer, it becomes transparent and the trees behind it actually show through its trunk. Please see the image I attached. Could you please help me to figure out why? Thanks in advance! Lan Lan W

Re: [JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread Lan Wu-Cavener
At 03:42 PM 1/31/2003 +0100, you wrote: There are several ways to use transparency. 2. Use two textures, one greyscale specifying alpha values that you use to create a texture in ALPHA format, and that one you combine / modulate with the original rgb texture. In that case, both textures can be in

Re: [JAVA3D] cone retrieval / Important

2003-01-31 Thread Lan Wu-Cavener
Cone is a primitive object, not a Geometry object. you should get exception for that. At 12:39 PM 1/31/2003 -0500, you wrote: hi all: given the code below: sceneGraphPath = branchGroup.pickAny(pickRay); System.out.println("scene graph="+" "+sceneGraphPath.toString());

Re: [JAVA3D] cone retrieval / Important

2003-01-31 Thread Hans Horn
In your code, you should do the cast AFTER you verified the class type : that is, instead of : Cone conex=(Cone)geom; if (conex instanceof Cone) { Cone conex=(Cone)someCone; ... you should: if (geom instanceof Cone) { Cone conex=(Cone)geom; ... This is not going

[JAVA3D] cone retrieval / Important

2003-01-31 Thread Brobbey,Isaac (neuron)
hi all: given the code below: sceneGraphPath = branchGroup.pickAny(pickRay); System.out.println("scene graph="+" "+sceneGraphPath.toString()); Shape3D shape3d = (Shape3D)sceneGraphPath.getObject(); Geometry geom = shape3d.getGeometry();

[JAVA3D] Class cast Exception // Important

2003-01-31 Thread Brobbey,Isaac (neuron)
Dear all: this is my scenegraphPath scenegraphPath = javax.media.j3d.Locale@10dc656 : com.sun.j3d.utils.geometry.Cone, Protein@1584807 : javax.media.j3d.Shape3Djavax.media.j3d.TriangleFanArray@e0e515 LocalToVworld Transform: 0.0375749076740305, -0.005965948985267853, -0.012350453208999744, 0.12

Re: [JAVA3D] texture mapping with a pattern

2003-01-31 Thread R. Carassou
thanks for your reply ok, it's easy with a primitive shape (sphere, cone) texture coordinates are automaticly created but how can i do that with a irregular geometry?? sorry if my question is stupid... I understand how to use the textCoordinate with a unique texture map onto a shape but not with a

[JAVA3D] Bug 4359764

2003-01-31 Thread Hannes L.
Hello, I wrote a program which uses more than 32 Canvas3D. Normaly I got an Exception because of the Bug 4359764. In prevoius Java3D version I simple decompile the 'MasterControl' class and fixed the bug. Now I use JRE 1.4.1. Only Java3D version 1.2.1_04 and upwards running with JRE 1.4.1. But

Re: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread Lan Wu-Cavener
Thank you for the tip! It is the type that I used finally worked right. But I did use "save as". some good luck that I have! Lan At 03:44 PM 1/31/2003 +0100, you wrote: I would recommend PNG. It has an alpha channel and can be loaded by J3D (you don't need JAI). To save transparent PNGs in Photos

Re: [JAVA3D] advice and tips on a tree

2003-01-31 Thread "Schäfer, Peter"
> 2. Use two textures, one greyscale specifying alpha values > that you use to > create a texture in ALPHA format, and that one you combine / > modulate with > the original rgb texture. In that case, both textures can be > in jpg format, > first as grayscale, second as rgb. Your graphic card must >

[JAVA3D] AW: [JAVA3D] texture mapping with a pattern

2003-01-31 Thread Florin Herinean
The best way to do EXACTLY what you want is to NOT use TexCoordGeneration, but to add the texture coordinates to the vertex definition in your geometry. Cheers, Florin -Ursprüngliche Nachricht- Von: R. Carassou [mailto:[EMAIL PROTECTED]] Gesendet: Donnerstag, 30. Januar 2003 18:00 An: [E

[JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree texture mappi ng

2003-01-31 Thread Florin Herinean
-Ursprüngliche Nachricht- Von: Lan Wu-Cavener [mailto:[EMAIL PROTECTED]] Gesendet: Freitag, 31. Januar 2003 15:23 An: [EMAIL PROTECTED] Betreff: Re: [JAVA3D] AW: [JAVA3D] advice and tips on a tree >Do you mean that I need to create geometry in a similar shape as the tree >shape in image?

Re: [JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree texture mappi ng

2003-01-31 Thread Lan Wu-Cavener
That is it! That is the attribute that I missed. Thank you again, Florin! Have saved me from a miserable weekend and may be more days! Lan At 02:44 PM 1/31/2003 +0100, you wrote: For the appearance attribute of the shape using textures with transparencies, you may need to add TransparencyAttri

Re: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread "Schäfer, Peter"
I would recommend PNG. It has an alpha channel and can be loaded by J3D (you don't need JAI). To save transparent PNGs in Photoshop, try using "Save For Web" (instead of "Save As"). -- Peter > -Original Message- > From: Lan Wu-Cavener [mailto:[EMAIL PROTECTED]] > Sent: Freitag, 31. Janua

[JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread Florin Herinean
There are several ways to use transparency. 1. The following formats in which you can export from Photoshop support transparencies: GIF, PNG-8 and PNG-24. JPG format DOES NOT SUPPORT TRANSPARENCY. GIF and PNG-8 doesn't use an Alpha channel, so a special colour is marked as being the transparent co

Re: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread Lan Wu-Cavener
I have used gif, jpg and png. All of them are generated from Photoshop 6.0 using transparent background and with an alpha channel added. The things that I am not sure is when saving the image to the format mentioned above, the alpha channel option is grayed out (deactivated). This may mean that

[JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree texture mappi ng

2003-01-31 Thread Florin Herinean
For the appearance attribute of the shape using textures with transparencies, you may need to add TransparencyAttributes with value=0 and mode=BLENDED. Cheers, Florin -Ursprüngliche Nachricht- Von: Lan Wu-Cavener [mailto:[EMAIL PROTECTED]] Gesendet: Donnerstag, 30. Januar 2003 21:48 An:

[JAVA3D] Multiple Locales

2003-01-31 Thread Ranjan.George
Hi All, Have been trying to understand the Java3D hierarchy. As i understand, a locale provides a co-ordinate system to the universe. But it is stated that a universe can have multiple locales. I can understand that too to some extent. When we add a node we specify its position, geometry, etc w

[JAVA3D] AW: [JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread Florin Herinean
Sorry, I pressed the send button before writing anything. Florin -Ursprüngliche Nachricht- Von: Kevin Glass [mailto:[EMAIL PROTECTED]] Gesendet: Freitag, 31. Januar 2003 09:29 An: [EMAIL PROTECTED] Betreff: Re: [JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree Did I miss som

Re: [JAVA3D] AW: [JAVA3D] AW: [JAVA3D] advice and tips on a tree

2003-01-31 Thread Kevin Glass
Did I miss something, or is this email a repost? Incidently, what format is your image? Does it actually have an Alpha channel? Kev > -Ursprüngliche Nachricht- > Von: Lan Wu-Cavener [mailto:[EMAIL PROTECTED]] > Gesendet: Donnerstag, 30. Januar 2003 21:48 > An: [EMAIL PROTECTED] > Betreff