one way roads, drawing spaced arrows

[rich.fromm]

tbonfort wrote:
> 
> vector should show up however.
> what's your symbol definition and your corresponding STYLE block ?
> 

using a truetype symbol, i have something like the following, thanks to your
previous tip:

--- begin 1a ---
SYMBOL
    NAME "fwdArrowFont"
    TYPE truetype
    # XXX eventually we should use some arrow specific font
    FONT verdana-bold
    CHARACTER ">"
    GAP -10
END
--- end 1a ---

this works, and has some spacing between the "arrows", as desired.

if i switch to using a vector symbol, like the following:

--- begin 2a ---
SYMBOL
    NAME 'fwdArrow'
    TYPE vector
    POINTS
        4 1
        3 0
        -99 -99
        4 1
        3 2
        -99 -99
        4 1
        0 1
    END
END
--- end 2a ---

this sort of works, but the arrows touch each other, with no spacing.

if i add a negative GAP to the vector symbol, like i did for the truetype:

--- begin 2b ---
SYMBOL
    NAME 'fwdArrow'
    TYPE vector
    POINTS
        4 1
        3 0
        -99 -99
        4 1
        3 2
        -99 -99
        4 1
        0 1
    END
    GAP -10
END
--- end 2b ---

then no symbols show up at all.  same result (no symbols) if i change to GAP
10.  if i change to GAP 0, the result is the same as having no GAP at all
(symbols are present, with no spacings).

the corresponding STYLE blocks are this:

--- begin 1b ---
            STYLE
                COLOR	102 153 204
                SIZE	5
                SYMBOL	'fwdArrowFont'
            END
--- end 1b ---

and this:

--- begin 2c ---
            STYLE
                COLOR	102 153 204
                SIZE	5
                SYMBOL	'fwdArrow'
            END
--- end 2c ---

respectively.

- rich

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