Re: [Geotools-devel] Rendering lines with a Graphic Stroke

[Jody G. <jga...@re...>]

Brent Owens wrote:
> Maybe an added "fit" tag could do it. Where the image is stretched 
> (shrunk) to fit the line length when the image is too large for the 
> line, and then tiled when the image is smaller than the line length. 
> Of course a single pixel representing a line breaks this, and most 
> solutions I believe.
I don't think we need to think on this one - what does the spec say?  
MapServer bends graphics along a line ... making nice looking roads and 
"pipes".
> A possibility would be to have the full image, a portion of the image, 
> or a different image altogether, displayed when the line turns into a 
> point (because of zooming out). That way when your line shrinks, your 
> graphic could turn into just an arrow head, instead of an arrow head 
> plus a line tail. The idea of a line graphic does not work for a point 
> geometry, because the line graphic is designed for a line. Maybe an 
> alternate lower-dimentionality image substitute would work.
By arrow Jesse means something like:
 ____/\____/\_____/\_____/\_____

Rather then:
=======================>

Here let me look it up for you guys:
> There are three basic types of strokes: solid-color, GraphicFill 
> (stipple), and repeated linear GraphicStroke. A repeated linear 
> graphic is plotted linearly and has its graphic symbol bent around the 
> curves of the line string, and a graphic fill has the pixels of the 
> line rendered with a repeating area-fill pattern. If neither a 
> GraphicFill nor GraphicStroke element is given, then the line 
> symbolizer will render a solid color.
Later,
Jody