• Create Account

We need 7 developers from Canada and 18 more from Australia to help us complete a research survey.

Support our site by taking a quick sponsored survey and win a chance at a \$50 Amazon gift card. Click here to get started!

# Matrix calculation

Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.

2 replies to this topic

### #1Juan Camilo Acosta Arango  Members   -  Reputation: 152

Like
0Likes
Like

Posted 14 October 2011 - 08:55 AM

I know that the computedRotationMatix is calculated multiplying PreRotation * Rotation * PostRotation;

computedRotationMatix = PreRotation * Rotation * PostRotation;

But currently i only knows the computedRotationMatix , PreRotation , PostRotation;

How can i find the Rotation matrix?

Juan Camilo Acosta Arango

Bogotá, Colombia

### #2SiCrane  Moderators   -  Reputation: 10849

Like
0Likes
Like

Posted 14 October 2011 - 09:01 AM

Provided that PreRotation and PostRotation are invertible,

Rotation = PreRotation-1 * computedRotationMatrix * PostRotation-1

### #3Álvaro  Crossbones+   -  Reputation: 16538

Like
0Likes
Like

Posted 14 October 2011 - 11:17 AM

And provided they are rotations, you can transpose them instead of finding their inverses, since the results should match.

Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.

PARTNERS