At 16:50 +0000 20/10/11, Cameron Laird wrote:
>Please say a few words more, Mr. Delacour.
>
>I mildly agree with you--but I suspect we might see different
>pictures when we use the same words. What, for you, is the
>significance among end-users of scalable images? What's the
>"business case" you see for vector, as opposed to raster,
>graphics?
>
>For me, SVG has already gone more-than-nowhere.
I use SVG exclusively at the moment for technical drawing, to do what
most people probably do in a clumsy and unfathomable CAD program.
All the coding is done by script using Perl and a special Perl module
I am developing to simplify things as much as possible.
For example this bit of Perl
$s.= path ("tf\\tl(30 30) scale(3)\\
fill\\burlywood\\
d\\M 0 0
v200 [spine]
h150 [front]
v-60 [cheek]
c -80 -10 -10 -160 -150 -140 [bent side]");
will produce this SVG code
<path transform="translate(30 30) scale(3)" fill="burlywood" d="M 0 0
v200 h150 v-60 c -80 -10 -10 -160 -150 -140" />
to give the shape of a grand piano, but the actual numbers used can
be variables imported from a text file into the perl script and
written as variables in the path etc, so the whole design can be
altered by simply changing the values of keys in a text file.
The values could also be acquired through a form on a web page so
that the user would fill in the fields and have the image redrawn to
his own specifications.
On the Mac at least, an SVG image can be printed direct to a vector
PDF from either Safari or Firefox (not Opera, which creates a raster
PDF) and this can be converted to DXF to take to the machinist, the
laser cutter, the water-jet cutter etc. to produce whatever object is
being drawn. There is also a UNIX program svg2pdf which uses Cairo
to produce a vector PDF but it is not reliable or fully developed.
I look forward to the day when the profile of SVG is raised to a
point where it is generally recognised as a serious tool for serious
work rather than a toy to produce useless cartoons etc. It ought to
be possible to take an SVG file to a machine shop in the morning and
collect a finished product in the evening.
JD
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