The arrow is in the middle of the graphic, so reversing it doesn't
help. I don't think it is a special case though. Suppose you are
drawing happy faces. When you zoom out you wouldn't see any happy
faces. What basically always happens is the line becomes an image that
is a single pixel long but maybe quite wide, depending on the graphic.
So it doesn't really matter what the image is it is always cut-off when
you zoom out. Even if it is a simple pattern of blue line followed by a
red line. When you zoom out it becomes a blue line.
Jesse
Brent Owens wrote:
I would expect the graphics to act the way they are currently acting.
An arrow is a special case, where you don't want part of the graphic
to change (arrow head), but you want the rest to adjust (the line). I
suggest making a special arrow type that will behave the way you want
it to. Or, reversing the points and having a reversed arrow graphic.
Brent Owens
TOPP
Jesse Eichar wrote:
I have a bit of a issue with lines drawn with a Graphic stroke. I've
looked at the SLD specification on how it is supposed to be done and
I haven't really gotten a good answer but here is what it does and
what I think it should do:
What it does:
Between each set of coordinates the graphic is drawn. If the
distance between the two coordinates is longer than the graphic then
the graphic is repeated until the space if filled up. So far this is
more or less ok. However if the distance between coordinates is less
than the length of the graphic then the graphic is clipped so that it
fits. Because of this when you zoom out the graphic is
unrecognizable. Image a line with an arrow. If you zoom in the
arrow can be seen with no difficulty but if you zoom out it looks
like a line (the arrow is lost).
What I expected:
I expected the arrow to show up independent of what zoom level I am
at. A weather map is a good point. I have weather front with arrows
indicating the direction they are moving. The direction the arrow
points is dependent on the order of the coordinates so a graphic
stoke would work perfectly... Unfortunately if I look at all of
canada it just looks like a line. I have to zoom in to see the
arrows. This is not what is desired.
I am going to make a new implementation of StyledShapePainter for my
use in this project. And can add it to geotools if it is the
behaviour that other expect as well. However if there is a better
way to do what I want please let me know before I do too much work.
Thanks,
Jesse
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