“[css-masking] draft from 2014-05-22: inflate in 'Appendix B: Compute stroke bounding box'

Hello,

I tried to find out, how the 'stroke bounding box' is related to an arbitrary 
stroked path, but something seems to be missing.

'Appendix B: Compute stroke bounding box' contains the line:

'Inflate box with the value of delta.'

It is explained before, how to determine the delta, but as far as I have seen,
the operation 'inflate box' is not defined and not obvious, how to do it.
I think, this needs to be added to have a defined meaning for this appendix.

My vague association with such 'inflation' is, because it is already known,
that the object bounding box is a rectangle, that this might be related to 
something like this:
a) Translate the center (the average of the vectors to the corners) of the
    object bounding box to the origin.
b) Multiply data/vectors by delta (respectively another number with a relation
    to delta, that needs to be defined)
c) Apply inverse operation of a)



Olaf

Received on Thursday, 3 July 2014 15:10:19 UTC