--- Log opened Sat Oct 22 00:00:59 2011 |
00:50 | | You're now known as TheWatcher[T-2] |
00:55 | < Derakon> | Right, there's basic cube drawing, and it works, and now I can move on to more interesting problems. |
00:55 | < Derakon> | Thanks for the help, McM. |
00:58 | | You're now known as TheWatcher[zZzZ] |
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05:35 | | mode/#code [+qo Vornicus Vornicus] by ChanServ |
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13:56 | | * AnnoDomini looks at a job advert. |
13:56 | < AnnoDomini> | The job advert lists COBOL as a requirement. |
14:12 | < gnolam> | Ahh... legacy systems. |
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14:52 | < Simon_Sh1ne> | * Time travel experience |
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18:15 | < celmin|lunch> | Okay, so, I have no idea why scaling doesn't work. |
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19:15 | < celticminstrel> | I even print out the matrix just before multiplying, and it looks right. |
19:17 | <~Vornicus> What's the row count on the matrix? |
19:18 | < celticminstrel> | 4 |
19:18 | <~Vornicus> and 4 columns too? |
19:18 | < celticminstrel> | Yeah. |
19:18 | <~Vornicus> [[2 0 0 0] [0 2 0 0] [0 0 2 0] [0 0 0 1]] |
19:18 | <~Vornicus> That fourth column is itself a scaling |
19:19 | < celticminstrel> | I did wonder about that... |
19:19 | < celticminstrel> | But, should I omit the fourth row when I multiply by a scalar, or the fourth column, or both? |
19:20 | <~Vornicus> 'yes' |
19:20 | < celticminstrel> | <_< |
19:20 | <~Vornicus> the fourth column is generally used to translate stuff |
19:20 | < celticminstrel> | Yeah. |
19:20 | <~Vornicus> and the fourth row is generally used when you're projecting |
19:20 | <~Vornicus> (specifically you can use it as a perspective mangle) |
19:21 | < celticminstrel> | (There's a 1 in the 4th column, 1st row, and I have no idea how it got there, but I'm ignoring it because I don't think it'd make a difference.) |
19:22 | < celticminstrel> | Okay, scaling works, now for translating and rotating with respect to the world origin. |
19:23 | < celticminstrel> | Translating works but is respect to the model at the moment. |
19:23 | < celticminstrel> | Probably the same is true of rotating; I can't tell. |
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19:28 | < sshine> | are you implementing matrix operations? |
19:31 | < celticminstrel> | I think the idea is to pre-compose the transforms before passing it on to OpenGL. I dunno; I'm basically doing what the assignment tells me to. I think. |
19:32 | < celticminstrel> | I'm supposed to implement the matrix myself or something. |
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19:46 | < sshine> | is some kind of matrix type passed to OpenGL? |
19:50 | < celticminstrel> | Yeah. |
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20:48 | | * Alek twitches. |
20:52 | < Alek> | http://pastie.org/private/nj4teiemdpu3bgxlbuuw |
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--- Log closed Sun Oct 23 00:00:14 2011 |