**Edited by Blind1992, 11 October 2013 - 02:25 PM.**

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#3
Members - Reputation: **104**

Posted 11 October 2013 - 06:10 AM

Matrix product is not implemented as component-wise multiplication..

Thanks for the reply, however I'm not quite sure what you mean, Im pretty new to OpenGL, and C++ for that matter. I've simply tried following tutorials, but adapt them to my matrix class. Could you elaborate please?

Many thanks

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#4
Moderators - Reputation: **9849**

Posted 11 October 2013 - 06:17 AM

What he's saying is that, if you have two matrices, then to multiply them you don't just take the individual components and multiply them. That is effectively what you're doing when you multiply the elements of CameraMatrix1 by the sine and cosine factors that make up the rotation matrix. Matrix multiplication is much more complex that that.

You need to read up on linear algebra, or at least matrix math. A quick search for matrix multiplication reveals plenty of sources.

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#5
Members - Reputation: **104**

Posted 11 October 2013 - 06:27 AM

What he's saying is that, if you have two matrices, then to multiply them you don't just take the individual components and multiply them. That is effectively what you're doing when you multiply the elements of CameraMatrix1 by the sine and cosine factors that make up the rotation matrix. Matrix multiplication is much more complex that that.

You need to read up on linear algebra, or at least matrix math. A quick search for matrix multiplication reveals plenty of sources.

You are quite right. I've been so stuck in this mindset I never looked back at what I thought was already correct. Well I'll see what I can come up with. Thanks. Maybe now I can make some progress

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#6
Crossbones+ - Reputation: **7572**

Posted 11 October 2013 - 06:50 AM

A good matrix/vector library takes quite a bit of effort to write and make bug-free. Unless you have specific needs or requirements rolling your own is nothing but a lengthy and annoying chore.

**Edited by BitMaster, 11 October 2013 - 06:51 AM.**

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#7
Members - Reputation: **104**

Posted 11 October 2013 - 07:59 AM

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#9
Members - Reputation: **104**

Posted 11 October 2013 - 08:16 AM

Without seeing the relevant code, it's only possible to guess. It appears either your matrix multiplication is still broken or the translation matrices you create are faulty.

Ignore post, made a silly mistake.

**Edited by Blind1992, 11 October 2013 - 08:20 AM.**