"Bald Eagle" <cre### [at] netscapenet> wrote:
> "LanuHum" <Lan### [at] yandexru> wrote:
>
> > Matrices are multiplied. How to manipulate an object using a matrix?
>
> Back to matrices again.   :)
>
> If you understand the basic functions of the different parts of the matrix, then
> you can compose a composite matrix by - as you pointed out - multiplying the
> matrices together.
>
> But that is simply representing what happens when you apply one matrix after
> another - sequentially.
>
> So, recently in my camera angle research, I came across a thread that had some
> nice SDL, and if I remember correctly (IIRC) you can therefore do something
> like:
>
> object {
>      MyObject
>      transform {
>           matrix {} // first matrix transform
>           matrix {} // second matrix transform
>           matrix {} // third matrix transform
>           ... etc.
>      }
> }
>
> I just got up and have other things going on, but I think that due to the nature
> of transforms and how they are applied to objects, you may have to invert the
> order of the matrices that get applied, but maybe I'm confusing that with
> something else that's closely related.
>
> I hope that answers most of what you were asking - sorry if I missed anything.
>
> {Also: someone had a question about using orthographic view in Blender}
> see:
>
http://news.povray.org/povray.general/message/%3Cweb.5d97ca568fd7f7baf8be68120%40news.povray.org%3E/#%3Cweb.5d97ca568
fd
> 7f7baf8be68120%40news.povray.org%3E
>
>
> Certainly we could all use more matrix scenes, macros, diagrams, examples,
> tutorials, and perhaps even one day a distro include file with hardcore matrix
> stuff - or implemented in source.

Thank you!

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