On 30-Oct-05 Amber Hassaan wrote:
> Hi Werner,
>Having read solutions posted to the
> forgoing problem by Ted and others,I think the task is
> solved for now.But I would rather that(in coming
> releases of groff):
> 1.pic had some construct like filled arc and filled
> polygon.(in addit
Hi Werner,
Having read solutions posted to the
forgoing problem by Ted and others,I think the task is
solved for now.But I would rather that(in coming
releases of groff):
1.pic had some construct like filled arc and filled
polygon.(in addition to \D request)
2.\D'***' request could be en
On 28-Oct-05 Tadziu Hoffmann wrote:
>
> Lots of fun with pie charts. Just for the heck of it, here's a
> modified version of Ted's pie-chart mechanism that "remembers"
> the angles of the wedges and allows you to give the wedge size
> as a percentage of the whole "pie" (plus, it allows you to use
This one works without string arguments:
.sp 3c
.de YY
ps: def
/wedge
{ gsave currentpoint translate 1 -1 scale
newpath 0 0 moveto 0 0 5 2 roll 3.6 mul exch
3.6 mul dup 3 1 roll add arc closepath
gsave fill grestore 0 setgray stroke
grestore }
def
..
\Y[YY]\c
.de wedge
\m[\\$2]\Z'\N'32''
Lots of fun with pie charts. Just for the heck of it, here's a
modified version of Ted's pie-chart mechanism that "remembers"
the angles of the wedges and allows you to give the wedge size
as a percentage of the whole "pie" (plus, it allows you to use
"groff" colors; the \N'32' (which should be a
On 28-Oct-05 Werner LEMBERG wrote:
>
>> Well, here's a skeleton with an example of use.
>
> *Very* nice!
>
>> Basically, as it is, you invoke in-line it with
>>
>> \*[wedge radius(pts) Red Green Blue Angle1 Angle2]
>
> Aah, you use the new string syntax with arguments! This means that
> you n
> Well, here's a skeleton with an example of use.
*Very* nice!
> Basically, as it is, you invoke in-line it with
>
> \*[wedge radius(pts) Red Green Blue Angle1 Angle2]
Aah, you use the new string syntax with arguments! This means that
you need at least groff 1.18.
Thanks a lot for your solut
Here is a variant where the sectors are outlined with
thin black lines, if you prefer that.
\X'ps: def \
/drawwedge { \
newpath \
0 0 moveto \
0 0 rad ang1 ang2 arc \
closepath \
} def'
\X'ps: def \
/wedge { gsave \
currentpoint translate 1 -1 scale \
/ang2 exch def \
/ang1 exch
Another Oops! The end of the \X'ps: def' was missing its closing
quote in my first post (not that it seemed to spoil it!).
Here is the code again.
\X'ps: def \
/wedge { gsave \
currentpoint translate 1 -1 scale \
/ang2 exch def \
/ang1 exch def \
/B exch def /G exch def /R exch def \
/r
[OOPS]
On 28-Oct-05 Ted Harding wrote:
> [...]
> .LP
> \&
> .sp 1i
> This is a line with_\h'0.5i'\
> \*[wedge 36 1.0 0.0 0.0 000 045]\
> \*[wedge 36 0.5 0.5 0.0 045 100]\
> \*[wedge 36 0.0 1.0 0.0 100 170]\
> \*[wedge 36 0.0 0.5 0.5 170 250]\
> \*[wedge 36 0.0 0.0 1.0 250 360]\
> \h'0.5i'_in the mi
On 28-Oct-05 Werner LEMBERG wrote:
>
>> I need to use drawing requests (\D'...') directly (without
>> using PIC) to make pie-chart segments that can be filled with
>> color.
>
> This isn't possible directly in groff (nor it is possible directly
> with pic). It is not too difficult to write a mac
> It works well for what I need right now, but the macro approach
> makes sense provided groff supports sine, cosine, and tangent
> functions...
Given that groff doesn't have a `float' data type only ad-hoc
solutions for the trigonometric functions, suitable to a specific
problem, make sense IMHO.
I solved my problem for now by changing my approach to the pie
chart and using solid color for the circle, then I filled one
small segment by drawing short, straight lines a few points wide
before drawing over the entire thing with an outer dark circle
and the various radii. It works well for what
> I need to use drawing requests (\D'...') directly (without
> using PIC) to make pie-chart segments that can be filled with
> color.
This isn't possible directly in groff (nor it is possible directly
with pic). It is not too difficult to write a macro which constructs
the segment itself with \D
On 25-Oct-05 Clarke Echols wrote:
>
> I need to use drawing requests (\D'...') directly (without
> using PIC) to make pie-chart segments that can be filled with
> color.
>
> I have no problem getting filled boxes and polygons, but I
> have not discovered how to draw two lines with an included
> a
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