[NTG-context] Re: Rotating and scaling images to fit a page

24 Apr 2025


      Hi,
...
Le 24 avr. 2025 à 04:28, Michael Guravage  a écrit :
Greetings,
I have many images, all with different aspect ratios, that I would like to collect in a document. Each image should be rotated and scaled to fit its page. My MWE uses an image's width and height to discern whether it's wide, tall, or square. This works, but I feel I'm reinventing the wheel. Is there a more straightforward way to implement this? Any suggestions would be much appreciated.
Here is a suggestion :
\starttext
\startMPpage
	draw externalfigure "cow.pdf" xysized(10in,2in) ;
\stopMPpage
\stoptext

Just change for your pagesize the dimensions above.
Fabrice.
...
--
With kind regards,
Michael Guravage
\showgrid
\setuplayout
  [header=0pt, footer=0pt,
   topspace=0pt, bottomspace=0pt,
   height=middle, width=middle,
   backspace=0pt]
\starttext
  \startluacode
    require "lfs"
    function GetFileExtension(url)
      return url:match("^.+(%..+)$")
    end
    cwd=lfs.currentdir()
    for file in lfs.dir(cwd) do
      suffix = GetFileExtension(file)
      if suffix == ".png" then
        image = figures.getinfo(file).used
        width = image.width or 0
        height = image.height or 0
        aspect = height/width
        if (aspect > 0.9 and aspect < 1.1 )  then
          context.externalfigure({file},{width="\\textwidth"})  -- almost square
        elseif height < width then
          context.externalfigure({file},{width="\\textheight", orientation=90}) -- landscape
        else
          context.externalfigure({file},{height="\\textheight"}) -- portrait
        end
        context.page http://context.page/()
      end
    end
  \stopluacode
\stoptext
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[NTG-context] Re: Rotating and scaling images to fit a page

Fabrice L