On 2015-10-30 14:26, Matt Maier wrote:
If it turns out that you can return a "normalized" SVG path does that
mean
we might be able to do some vector operations in script. Like
separating/joining two different shapes/paths, or adjusting the control
points of a shape?
I meant to actually put a footnote into that post to explain what
normalized meant in this context...
SVG paths have various commands which are not part of the 'standard' 2d
vector path model - in particular arcs and relative commands. The code
we have parses them all, but they get 'normalized' to
moveto/lineto/quadcurveto/cubiccurveto/closepath thus setting an svgpath
and getting it again will not necessarily roundtrip.
Anyway, in terms of your actual question - you will be able to
manipulate the svg paths as strings - so you'll be able to build paths
up out of subpaths, and modify elements of them (by modifying the
string) certainly.
In terms of 'vector operations' - if you mean things like union /
intersection / difference of paths then that is a lot harder. That being
said, I do think Skia has added some 'PathOps' abilities for such things
which we can look into leveraging. It would be nice to be able to do
things like:
union svg path tFoo with svg path tBar
intersect svg path tFoo with svg path tBar
At some point.
In regards to editing the control points of a shape - then you can do
that with polygonal points of graphics now (right click menu on a
graphic IIRC, or you can set the 'editMode' of the graphic). We'd
certainly look at extending the editTool so curves can also be edited in
this way.
Warmest Regards,
Mark.
--
Mark Waddingham ~ m...@livecode.com ~ http://www.livecode.com/
LiveCode: Everyone can create apps
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