[cairo] How to texturing a self-defined pattern(or image) along line and fill a polygon?

[Petr Kobalíček]

Check out antigrain (https://github.com/oncaphillis/agg), it has this
feature and it's public domain.

On Fri, Dec 4, 2015 at 8:56 PM, Lawrence D'Oliveiro <ldo at geek-central.gen.nz
> wrote:

> On Fri, 04 Dec 2015 14:53:56 +0800, quanzhao198757 at sina.com wrote:
>
> > I want to use cairo to draw vector-maps, and it shows the strong
> > ability to draw lines and polygons etc., but now I need to texturing
> > a self-defined pattern(may like -^--^--^--^-) along a winding line
> > and fill polygon with it, how should I do?
>
> You could flatten the path to a sequence of straight lines. Then do
> your own patterning along each of those straight lines.
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