AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Simple 3D Point Plotting          AppletTalk.com Forum Index -> Java Help View previous topic :: View next topic   Author Message Brian Bagnall Guest Posted: Sun Sep 24, 2006 9:52 pm    Post subject: Simple 3D Point Plotting I'm looking to create a simple Java app that outputs a bunch of 3D points (X, Y, Z) into a window. Possibly being able to rotate the image of the dots to appreciate the 3D. What would be my best way to do this in Java? The Java 3D API seems like overkill since you *need* OpenGL and a 3D card, but I'm sure my app would run fine on any system without 3D hardware. - Brian Back to top Thomas Weidenfeller Guest Posted: Mon Sep 25, 2006 2:05 pm    Post subject: Re: Simple 3D Point Plotting Brian Bagnall wrote: Quote: I'm looking to create a simple Java app that outputs a bunch of 3D points (X, Y, Z) into a window. Possibly being able to rotate the image of the dots to appreciate the 3D. What would be my best way to do this in Java? There is almost never a best way in programming, only compromises. And without knowing your requirements, resources, etc. we can't even say what a feasible way might be. Quote: The Java 3D API seems like overkill since you *need* OpenGL and a 3D card, but I'm sure my app would run fine on any system without 3D hardware. You ruled out Java 3D (because you didn't want to make that compromise), so now you have to make other compromises when e.g. using the Java2D API (part of the java standard edition). You could now start to learn the Java2D API. Then learn the math involved in projecting 3D data on a 2D surface, rotation, translation, scaling of 3D data, etc. Alternatively, you could look for some 3rd party data visualization toolkit (google ...) which might fit your needs. Or you could look for similar examples. E.g. there is a very old applet demo which displays somewire frame data. It might be possible to adapt it. /Thomas -- The comp.lang.java.gui FAQ: http://gd.tuwien.ac.at/faqs/faqs-hierarchy/comp/comp.lang.java.gui/ ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq Back to top Brian Bagnall Guest Posted: Mon Sep 25, 2006 8:58 pm    Post subject: Re: Simple 3D Point Plotting "Thomas Weidenfeller" <nobody (AT) ericsson (DOT) invalid> wrote in message news:ef8658$f48$1 (AT) news (DOT) al.sw.ericsson.se... Quote: Alternatively, you could look for some 3rd party data visualization toolkit (google ...) which might fit your needs. Or you could look for similar examples. E.g. there is a very old applet demo which displays somewire frame data. It might be possible to adapt it. Yes, that sounds like a better way to go. I can output the data to a file and display the scatter dots it in another program (probably around 400 dots). Could you point me to the Java app you mentioned, or possibly a free data visualization application? - Brian Back to top Larry Barowski Guest Posted: Tue Sep 26, 2006 6:51 pm    Post subject: Re: Simple 3D Point Plotting "Thomas Weidenfeller" <nobody (AT) ericsson (DOT) invalid> wrote in message news:ef8658$f48$1 (AT) news (DOT) al.sw.ericsson.se... Quote: Brian Bagnall wrote: You could now start to learn the Java2D API. Then learn the math involved in projecting 3D data on a 2D surface, rotation, translation, scaling of 3D data, etc. Alternatively, you could look for some 3rd party data visualization toolkit (google ...) which might fit your needs. Or you could look for similar examples. E.g. there is a very old applet demo which displays somewire frame data. It might be possible to adapt it. For either of those options, the OP might want to look at VGJ. It displays graphs in 3D, with rotation controls. http://www.eng.auburn.edu/department/cse/research/graph_drawing/vgj.html Assuming you are plotting points that are the same solid color, so you don't need a z-buffer or depth sort, this would be all you'd need. The code is very old, somewhat sloppy, and no longer maintained, but you can find updated versions elsewhere. 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