"Sven Littkowski" <sve### [at] jamaica-focuscom> wrote:
> Thanks for your replay, Manuel.
>
> However, I am not sure if I understood your points right, let me repeat the
> way I understood. So you can correct me.
>
> "When selecting with a rectangle, POV-Ray is currently remembering the
> outlines and can therefore repeat a render just like that. However when
> using a lasso shape (irregular shape) with more corners than a rectangle,
> POV-Ray could not automatically re-render that selection.
>
> And it is not possible to select (based on what you see so far after a
> rendering) to select a part of the scene so exactly as you could with a
> rectange."
>
> Is this what you meant?
>
> Sven
>
>

What he means is that when selecting with a rectangle, only points (4
numbers) are needed to describe the lower left and upper right corners of
the selection.  When you do this, you canoptionally have these written to
your ini file for rerendering the exact selection.  These are written to
the ini as Start_Column, Start_Row, End_Column and End_Row (+SC, +SR, +EC,
+ER).  These can also be appended manually to the commandline to render
onlya region.  However with a lasso selection, many more values need to be
used to describe the region.  It is likely possible to do this, however,
adding it to the ini file or command line would not be convenient.
Not to say that it can't be done, but it would likely have to implemented
differently than the current rectangle selection.

-tgq

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