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# nkarasch

Member Since 01 Nov 2012
Offline Last Active Nov 01 2013 10:22 AM

### In Topic: Euler angle rotations

26 October 2013 - 07:56 PM

z axis, then rotate beta around the new y', finally rotate gamma around the new z''

I used ZYZ, doesn't that match up to what that says?

### In Topic: Euler angle rotations

26 October 2013 - 07:36 PM

http://wolfr.am/1cjQWiv

Does that look right?

I would just go ahead and try it but I have no idea how my end result is supposed to look. All I can do is make sure I'm right on a theory level.

### In Topic: Euler angle rotations

26 October 2013 - 06:43 PM

"You will eventually regret any use of Euler angles." -John Carmack

Part of my assignment:

Parameters of the rotation have been pre-calculated and stored in an attached data file (el1_sh.txt). In the file, the 1st column is timestamp and the rest three columns specify Euler angles of rotations: the 2nd column is alpha, 3th column is beta, 4th column is gamma. There are several definitions of Euler angles. The Euler angle definition used in the file is: First, rotate alpha around the z axis, then rotate beta around the new y', finally rotate gamma around the new z''.

In this assignment, you are asked to animate this series of rotation.

So I need to produce a transformation matrix for these rotations

These kinds of rotation matrices can't give me rotations around the "new" y' and z'' can they? aren't they only relative to the x, y and z of my coordinate system?

### In Topic: Power Up Table Tennis Contest

30 September 2013 - 06:46 PM

I would like to participate as well

### In Topic: All matrix operations in shader?

30 September 2013 - 05:34 PM

Thanks, I don't know about instanced rendering yet but now I have something new to read about

I think it's all opinion but I disagree about me reusing my work being unfair to other students. If I have spent 12 hours a day working on this stuff since school resumed, I don't think it's unfair for me to get to reuse code. It's also NOT unfair to me that I have to start over, I wasn't trying to say that either.

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