resizing an image.

[amit]

Hi group,

What is the best way to rersize an image to a specific width and
height?

Any samples?


Thanks.

[amit]

Re: resizing an image.

On Apr 1, 4:02 pm, amit <amit.ko...@gma il.comwrote:

Hi group,
>
What is the best way to rersize an image to a specific width and
height?
>
Any samples?
>
Thanks.

Just to explain my case:

Currently I have a png file. it will be uploaded and then converted to
JPEG file. Either before conversion or after conversion (which is
better?) I need to change the size of it to be width=320 pixcel and
height =240 pixcel


Thanks.

[amit]

Re: resizing an image.

On Apr 1, 4:19 pm, amit <amit.ko...@gma il.comwrote:

On Apr 1, 4:02 pm, amit <amit.ko...@gma il.comwrote:
>

Hi group,

>

What is the best way to rersize an image to a specific width and
height?

>

Any samples?

>

Thanks.

>
Just to explain my case:
>
Currently I have a png file. it will be uploaded and then converted to
JPEG file. Either before conversion or after conversion (which is
better?) I need to change the size of it to be width=320 pixcel and
height =240 pixcel
>
Thanks.

This is currently what I'm doing:


$tmp = imagecreatetrue color($new_widt h, $new_height);
imagecopyresamp led($dst, $file, 0,0,0,0, $new_width, $new_height, 320,
240);

imagejpeg($tmp, "/var/www/html/apps/sa/usr_bg_imgs/" . "newfile.pn g",
100);


However, generated image is a black image only!

[Krustov]

Re: resizing an image.

<comp.lang.ph p>
<amit>
<Tue, 1 Apr 2008 16:02:53 -0700 (PDT)>
<57d37985-0849-4530-8d59-9c51ba5f6f16@s8 g2000prg.google groups.com>

What is the best way to rersize an image to a specific width and
height?
>
Any samples?
>

The code below doesnt mind if the source image is widescreen or portrait
as it will resize either to suit .



$max_width=150;
$max_height=107 ;

$source="demo/blah.jpg";
$thumb=imagecre atetruecolor($m ax_width,$max_h eight);
$grab=imagecrea tefromjpeg($sou rce);

$dummy="#FAF9EC "; include('colour _convert.php'); $kol=imagecolor allocate
($thumb,$grab1, $grab2,$grab3);
imagefilledrect angle($thumb,0, 0,$max_width,$m ax_height,$kol) ;

$size=GetImageS ize($source);
$width_ratio=($ size[0]/$max_width);
$height_ratio=( $size[1]/$max_height);

if ($width_ratio>= $height_ratio)
{$ratio=$width_ ratio;}
else
{$ratio=$height _ratio;}

$new_width=($si ze[0]/$ratio);
$new_height=($s ize[1]/$ratio);

$glasgow=0; if ($new_width<$ma x_width) {$glasgow=75-$new_width/2;}

$paisley=0; if ($new_height<$m ax_height) {$paisley=54-$new_height/2;}

imagecopyresamp led($thumb,$gra b,$glasgow,$pai sley,0,0,$new_w idth,
$new_height,$si ze[0],$size[1]);



colour_convert. php being the following .....

<?php

$temp=str_repla ce("#","",$dumm y); $temp=strtouppe r($temp);

$temp1=substr($ temp,0,2);
$temp2=substr($ temp,2,2);
$temp3=substr($ temp,4,2);

$grab1=hexdec($ temp1);
$grab2=hexdec($ temp2);
$grab3=hexdec($ temp3);

?>


Hardly stunning code - but it works fine and i've more important things
to do than tinker around rewiting it .


--

https://www.krustov.co.uk

[Krustov]

Re: resizing an image.

<comp.lang.ph p>
<Krustov>
<Wed, 2 Apr 2008 00:57:40 +0100>
<MPG.225cd6b619 7effbb98b366@ne ws.newsreader.c om>

imagecopyresamp led($thumb,$gra b,$glasgow,$pai sley,0,0,$new_w idth,
$new_height,$si ze[0],$size[1]);
>

$jenny="poop/whatever.jpg";

imagejpeg($thum b,$jenny,70); imagedestroy($t humb); imagedestroy($g rab);



Add the above code that i snipped by mistake .

[amit]

Re: resizing an image.

On Apr 1, 5:04 pm, Krustov <m...@privacy.n etwrote:

<comp.lang.ph p>
<Krustov>
<Wed, 2 Apr 2008 00:57:40 +0100>
<MPG.225cd6b619 7effbb98b...@ne ws.newsreader.c om>
>

imagecopyresamp led($thumb,$gra b,$glasgow,$pai sley,0,0,$new_w idth,
$new_height,$si ze[0],$size[1]);

>
$jenny="poop/whatever.jpg";
>
imagejpeg($thum b,$jenny,70); imagedestroy($t humb); imagedestroy($g rab);
>
Add the above code that i snipped by mistake .

Thank you but it is so confusing the way it is written in terms of
variable names. Also, I get so many division by zero.

However, I will do something about it.

Thanks for your time.