Thanks for your reply Ron. Generically, what I am trying to
do is produce an image of a bog standard bar chart, on a
white
background (i.e. starting from a blank canvas), as follows:
| X Y
| Y X X Y
|__X_Y___X_Y___X_Y___ ...
i.e. a sequence of bar "groups", in which I am
drawing each bar
as a rectangle, and to distinguish each bar type I am hoping
to
fill them with a distinct pattern such as an array of dots
or a
hatching. (Colour-filling helps, but the images may be
monochrome
printed.)
I know there's a perl module GD::Graph that would do most
of what
is needed. But I thought it would be nice to use
ImageMagick, both
to gain experience in it and perhaps also produce a slightly
more
polished image (e.g. with antialiasing of lines).
So far everything has worked out fine, except for this
blasted
pattern-filling of the rectangles.
You ask about backgrounds and foregrounds, but perhaps that
is
part of what needs clarifying, given the task I've
described.
Basically I just think of the whole graph as a pen-plot,
i.e.
vector graphics (and text) application, which I know is not
what
ImageMagick is primarily about; but as it does include
drawing
primitives and fill patterns, I naturally assumed there must
be
some way of combining these to achieve what is needed.
Cheers
John
-----Original Message-----
From: Ron Savage [mailto:ron savage.net.au]
Sent: 19 July 2006 11:35
To: List - ImageMagick Users
Subject: RE: [magick-users] Fill pattern in rectangle
usingPerlMagickDraw('primitive' => 'rectangle', ..)
On Wed, 19 Jul 2006 10:26:58 +0100, Ramsden, John wrote:
Hi John
> So my question is what extra code must I add to tile a
rectangle I
> am plotting as above by a pattern such as
'pattern:crosshatch'.
I too am mystified. For me it's: What exactly are you
trying to do?
I think you need to specify the steps in English.
Your code created images - it did not reveal to what end you
are going to employ
those images.
Are you trying to create a rectangle, and then use that as
the tile?
Put it like this: What exactly is your background, and what
exactly is your
foreground? Define those and them we can consider combining
them.
After that, we might consider using the Draw() method to
tile one image on top
of another one.
> I'm grateful for these, but the PerlMagick
documentation for Draw()
> seems pretty sketchy.
True.
--
Cheers
Ron Savage, ronsavage.net.au on 19/07/2006
http://savage.net.au/
index.html
Let the record show: Microsoft is not an Australian company
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