GD with php

[timlitw@gmail.com]

I am trying to use gd to make a wind direction compass.

Is is possbile to merge the picture of the compass with the picture of
the compass needle rotateing the needle as needed ofr each rendering?

[Janwillem Borleffs]

Re: GD with php

timlitw@gmail.c om wrote:

I am trying to use gd to make a wind direction compass.
>
Is is possbile to merge the picture of the compass with the picture of
the compass needle rotateing the needle as needed ofr each rendering?
>

Yep, example source can be found here:

http://playground.jwscripts.com/imagerotate.phps

The source also contains URLs to a demo application.


JW

[timlitw@gmail.com]

Re: GD with php


Janwillem Borleffs wrote:

timlitw@gmail.c om wrote:

I am trying to use gd to make a wind direction compass.

Is is possbile to merge the picture of the compass with the picture of
the compass needle rotateing the needle as needed ofr each rendering?

>
Yep, example source can be found here:
>

http://playground.jwscripts.com/imagerotate.phps

>
The source also contains URLs to a demo application.
>
>
JW

Thanks very much for that. I had found a clock and modified that - and
got this far

http://www.qffinc.com/scripts/compass.php?windir=300

but I think with a few modification this example will get me further.

[timlitw@gmail.com]

Re: GD with php


timlitw@gmail.c om wrote:

Janwillem Borleffs wrote:

timlitw@gmail.c om wrote:

I am trying to use gd to make a wind direction compass.
>
Is is possbile to merge the picture of the compass with the picture of
the compass needle rotateing the needle as needed ofr each rendering?
>

Yep, example source can be found here:

http://playground.jwscripts.com/imagerotate.phps

The source also contains URLs to a demo application.


JW

>
Thanks very much for that. I had found a clock and modified that - and
got this far

http://www.qffinc.com/scripts/compass.php?windir=300

>
but I think with a few modification this example will get me further.

It still needs some work - rotateing the pointer for nne ne and ene ofr
example leave artifacts. you can see it here

http://www.qffinc.com/weather/hillsboro/test.php

[Geoff Berrow]

Re: GD with php

Message-ID: <1151819563.790 025.269390@75g2 000cwc.googlegr oups.comfrom
timlitw@gmail.c om contained the following:

>It still needs some work - rotateing the pointer for nne ne and ene ofr
>example leave artifacts. you can see it here
>http://www.qffinc.com/weather/hillsboro/test.php

Give your server a break. Each time you generate and image, store it.
then check if the image exists before generating a new one. Eventually
you will have 360 images and won't need to create any more. Or just
write a loop to generate 360 images in one go.

Though to be honest, I doubt you can measure wind direction to an
accuracy of one degree anyway. A display to the nearest 5 degrees would
probably do just as well.
--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[timlitw@gmail.com]

Re: GD with php


Geoff Berrow wrote:

Message-ID: <1151819563.790 025.269390@75g2 000cwc.googlegr oups.comfrom
timlitw@gmail.c om contained the following:
>

It still needs some work - rotateing the pointer for nne ne and ene ofr
example leave artifacts. you can see it here
http://www.qffinc.com/weather/hillsboro/test.php

>
>
Give your server a break. Each time you generate and image, store it.
then check if the image exists before generating a new one. Eventually
you will have 360 images and won't need to create any more. Or just
write a loop to generate 360 images in one go.
>
Though to be honest, I doubt you can measure wind direction to an
accuracy of one degree anyway. A display to the nearest 5 degrees would
probably do just as well.
--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

actually , n, nne, ne, ene, e, ese, se, sse, s ssw, sw, wsw, w wnw, nw,
nnw are all that are really needed. We don't actually have to be more
acurate than that.

So how do I check if I already have the image ot not?

[Geoff Berrow]

Re: GD with php

Message-ID: <1151866129.908 244.297340@p79g 2000cwp.googleg roups.comfrom
timlitw@gmail.c om contained the following:

>actually , n, nne, ne, ene, e, ese, se, sse, s ssw, sw, wsw, w wnw, nw,
>nnw are all that are really needed. We don't actually have to be more
>acurate than that.
>
>So how do I check if I already have the image ot not?

file_exists()

But for just sixteen images, I'd simply create them in a paint program.

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Krustov]

Re: GD with php

<comp.lang.ph p>
<timlitw@gmail. com>
<2 Jul 2006 11:48:49 -0700>
<1151866129.908 244.297340@p79g 2000cwp.googleg roups.com>

actually , n, nne, ne, ene, e, ese, se, sse, s ssw, sw, wsw, w wnw, nw,
nnw are all that are really needed. We don't actually have to be more
acurate than that.
>
So how do I check if I already have the image ot not?
>

$pass=1;
$filename="imag es/demo.jpg";
if (!file_exists($ filename)) {$pass=0;}
if ($pass==0) {include('creat e_map_image.php ');}

If a image isnt found then $pass will equal 0


--

https://www.emailuser.co.uk/?name=KRUSTOV

[timlitw@gmail.com]

Re: GD with php


Krustov wrote:

>
$pass=1;
$filename="imag es/demo.jpg";
if (!file_exists($ filename)) {$pass=0;}
if ($pass==0) {include('creat e_map_image.php ');}
>
If a image isnt found then $pass will equal 0

Thank you everyone for the help!

[timlitw@gmail.com]

Re: GD with php

Now I need to add, high and low hands to my gauges.

When I duplicate the code the writes the hand it still doesn't get in
the final image.

I'm guessing that I need to increment the temporary image that I am
working with as I add layers.

Does any one have an example of adding 2 or 3 layers on top of an
image?