| --- Log opened Sat Mar 21 00:00:42 2015 |
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| 00:23 | <&Derakon> | Oh, ToxicFrog: thanks for the Clojure help earlier. Same to you, McMartin. |
| 00:23 | <&ToxicFrog> | You're welcome |
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| 00:59 | <&McMartin> | Cheers |
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| 12:38 | < abudhabi> | Is there any better way to render vector graphics in Java than Graphics2D? |
| 12:38 | <&McMartin> | What scale of vector graphics are we talking here? |
| 12:38 | < abudhabi> | Spheres, ellipses and lines, mostly. |
| 12:38 | <&McMartin> | If you're rendering full 3D scenes, there are full bindings to things like OpenGL or 3D scene frameworks. |
| 12:38 | <&McMartin> | Ah, OK |
| 12:38 | <&McMartin> | Graphics2D is probably the way to go for that. |
| 12:39 | < abudhabi> | But Graphics2D appears to have awful scaling, and equally awful handling of sub-pixel coordinates. |
| 12:41 | <&McMartin> | Hrm. I vaguely recall an official API that used floating point for coordinates. |
| 12:41 | <&McMartin> | I'm about three major revisions out of date in Java |
| 12:43 | < abudhabi> | Some of the functions support FP, but some of the ones I need don't. |
| 12:43 | <&McMartin> | Are those the ones, perchance, that exist also in the Graphics superinterface~ |
| 12:43 | < abudhabi> | Ionno. |
| 12:44 | <&McMartin> | Graphics is the old 1.0 not-really-good-enough API, Graphics2D is an attempt to extend that to be less awful while remaining compatible |
| 12:44 | <&McMartin> | Both of them are essentially for painting to custom widgets, which is a thing that OSes occasionally get cranky about in this age of actually functional direct rendering infrastructure |
| 12:44 | < abudhabi> | So what are my options? Should I use some kind of 3D thing to render my 2D? |
| 12:45 | <&McMartin> | Well |
| 12:45 | <&McMartin> | That's a lot of work |
| 12:45 | <&McMartin> | But it's also a very standard approach these days |
| 12:45 | <&McMartin> | Do you have a UI mockup or screenshot or anything? |
| 12:45 | <&McMartin> | A lot of my advice depends on exactly what kind of application this is. |
| 12:47 | <&McMartin> | (But I'll also add that I'm not aware of any 3D vector libraries that do ellipses well~) |
| 12:48 | < abudhabi> | http://i.imgur.com/Org7cfn.png |
| 12:48 | <&McMartin> | I'm getting removed.png there |
| 12:48 | < abudhabi> | http://i.imgur.com/Orq7cfn.png |
| 12:49 | <@Shiz> | beautiful AWT styling |
| 12:50 | <@Shiz> | protip: UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); |
| 12:50 | <&McMartin> | Ok. This is about the usecase I'd use Graphics2D for, yeah |
| 12:50 | <@Shiz> | this should be mandatory code for everything that uses AWT/swing |
| 12:50 | <&McMartin> | FFS, I asked for a mockup, dude |
| 12:50 | <@Shiz> | lol |
| 12:50 | <&McMartin> | (This is the "Minesweeper/Chip's Challenge" usecase, for the record) |
| 12:51 | < abudhabi> | I'd be fine if it were just the subpixel that were shitty. |
| 12:51 | < abudhabi> | But I really need adequate scaling. |
| 12:52 | <&McMartin> | AffineTransform doesn't cover it? |
| 12:52 | <&McMartin> | (I've never attempted this) |
| 12:52 | < abudhabi> | How does that work? |
| 12:52 | < abudhabi> | I've been using .scale() which isn't what I want (it's a plain raster scale). |
| 12:53 | <&McMartin> | So, I'm incredibly rusty here, but |
| 12:53 | <&McMartin> | There's are Shape classes that you can pass to Draw, with names like Ellipse2D |
| 12:53 | <&McMartin> | Those can be run through AffineTransform objects to do stretching and scaling operations, and maybe also rotations? |
| 12:54 | <&McMartin> | And that gets you a new Shape that can then be drawn |
| 12:54 | | * McMartin goes into random-walk research mode, o_Os. "Since when does Scala target LLVM?" |
| 12:55 | <&McMartin> | Answer: OK, maybe it doesn't. |
| 12:55 | <&ToxicFrog> | it does? holy shit |
| 12:56 | <&ToxicFrog> | oh :( |
| 12:56 | <&McMartin> | abudhabi: The official tutorial on this is http://docs.oracle.com/javase/tutorial/2d/advanced/transforming.html |
| 12:56 | <&McMartin> | I'm not sure if this is what you want |
| 12:57 | <&McMartin> | But I'm way too rusty here to be able to suggest useful best practices or anything :/ |
| 13:00 | < abudhabi> | Well, thanks anyway. |
| 13:00 | < abudhabi> | I'll see if I can use this. |
| --- Log closed Sat Mar 21 13:07:55 2015 |
| --- Log opened Sat Mar 21 13:19:25 2015 |
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| --- Log closed Sun Mar 22 00:00:58 2015 |