Re: Gets vertical skylines from grob stencils (issue 5626052)

[David Kastrup]

"address@hidden" <address@hidden> writes:

> On Feb 13, 2012, at 12:28 AM, address@hidden wrote:
>
>> On Feb 12, 2012, at 3:40 PM, David Kastrup wrote:
>> 
>>> 
>>> What's with the translate_scale_rotate stuff?  .
>>> 
>>> That looks fishy.  What are you trying to do here?
>> 
>> Account for line thickness.  I actually have no clue how thickness
>> works.  Is thickness in PS and SVG always added perpendicularly on
>> either side (meaning thick/2 on both sides) of the line that is the
>> slope of a curve at a given point?
>> 
>
> Re-asking this question.  In PS and SVG, will the thickness of a curve
> always be added perpendicularly in both directions to the line tangent
> to the curve at a given point?  Also, with rounded caps, does the
> radius of this cap sweep 180 degrees starting and ending at the
> perpendicular axis to the curve while being anchored at the beginning
> and end point?  If so, I can get rid of Translate_scale_rotate.

I can't speak for SVG, but PostScript questions should be answered in
the PostScript Language Reference Manual.  I recommend storing it in a
reasonably accessible place on your disk.

<URL:http://www.adobe.com/products/postscript/pdfs/PLRM.pdf>

-- 
David Kastrup