Timeline for How to compute a transformation matrix that describes each position and rotation on a sphere?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 14, 2016 at 21:58 | vote | accept | Lamda | ||
| Apr 23, 2016 at 11:30 | comment | added | Lamda | could you elaborate on the gimbal lock.. The way i've computed my up vector is as such.. up = cross(cross(direc,(0,1,0)),dir) how would you based on these to construct the rotation matrix?¨ | |
| Apr 23, 2016 at 11:27 | comment | added | sam hocevar | No, the up vector is just a general hint, it does not have to be perpendicular to your view vector. It just has to be non-collinear. Gimbal lock is related to this, but probably not an issue for you. | |
| Apr 23, 2016 at 11:21 | comment | added | Lamda | Will gimbal lock be an issue here? | |
| Apr 23, 2016 at 11:08 | comment | added | Lamda | I am sure i understand the problem.. Could you demonstrate with an illustration? | |
| Apr 23, 2016 at 10:47 | comment | added | Lamda | It seems like the up vector should be perpendicular to the my orient vector?.. but it does not seem like that 0,0,1 is always perpendicular to that.. | |
| Apr 23, 2016 at 10:41 | comment | added | Lamda | I did read a bit about the up vector.. which might help me?.. I am not using any form of 3d library, so i have to compute it using mathematics. | |
| Apr 23, 2016 at 10:02 | history | answered | sam hocevar | CC BY-SA 3.0 |