Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Thanks, that is what I was looking for, last night: pass Imager a data array or pack'ed binary data. I could not hit that in any doc (with my limited bandwidth). And even now Imager::Draw manages to confuse me more than clear it up.

Is the following equivalent without the functionality of switching the channels (I can create data with any channel arrangement)? Note how I had to change ROSYBROWN to RGBA and that non-transparent seems to be 0xFF!

use strict; use warnings; use Imager; use constant IMAGESIZE => 300; # RBGA use constant ROSYBROWN => 0xBC8F8FFF; my @result = map { # make us some picture to find when ( ROSYBROWN ) x $_, # examining output, let it be random int( rand 0xFFFFFFFF ), # colour diagonal on uniform BG ( ROSYBROWN ) x ( IMAGESIZE - $_ - 1 ), } 0 .. IMAGESIZE - 1; my $img = Imager-> new( type => 'raw', xsize => IMAGESIZE, ysize => IMAGESIZE, data => pack( 'L>*', @result ), raw_interleave => 0, raw_datachannels => 4, raw_storechannels => 4, ); $img->write(file=>'out.png');

In reply to Re^2: How to create and save an image from RGB values by bliako
in thread How to create and save an image from RGB values by bliako

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others examining the Monastery: (3)
As of 2022-08-18 23:45 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?