Hi Ingo,
There aren't any specific methods, but transforms are just hash refs, so you
can get at the internals easily. In your case it sounds like you want
something like this:
$t=t_linear(s=>3,rot=>25,pre=>10)
p keys %$t
p values %$t
p keys %{$t->{params}}
p values %{$t->{params}}
You'll get the rotation matrix, then, with $t->{params}->{matrix}. It looks
like this also folds in the scaling, as there is no separate scaling parameter
(and in my example the diagonal entries are >1). See the t_linear docs.
cheers,
Derek
> On Jan 12, 2017, at 7:13 AM, Ingo Schmid <[email protected]> wrote:
>
> Hi Craig,
>
> is it possible to access parts of a e.g. linear transformation? I have
> defined a map from world to pixel coordinates (or vice versa). This
> object I store in the header of the image stack.
>
> In some cases now, I would like to access parts of the transformation,
> like the rotation matrix or the scaling. As far as I can tell there are
> no methods to access these parts of the transform object? I would like
> to avoid having to store these parts separately if possible.
>
>
> Ingo
>
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