Command/bitmapimage

\bitmapimage

Summary

The command \bitmapimage is used to produce bitmap image giving color code for each pixel, from left ro right and top to bottom.

Settings

\bitmapimage[...=...,...]{...}
color	rgb cmyk gray
width	dimension
height	dimension
x	number
y	number
{...}	number

Option	Explanation
width	width of the produced bitmap
height	height of the produced bitmap
x	number of pixel in the x direction
y	number of pixel in the y direction
Concatenated strings giving for each pixel, the color code. For example, in rgb mode : "FF0000" for a first red pixel, then "00FF00" for a second green pixel,... At the end you should provide a string like "FF000000FF00..."

Examples

Example 1

\bitmapimage[x=2,  y=2,  width=4cm, height=4cm,color=rgb]{44000088000CC00000FF0000}

With lua, you can obtain all you want

Since you're unlikely to define bitmap images by hand, you'll probably prefer to use lua :-)

\startluacode
function document.TestBitmap(nx,ny)
  local r = { }
  for i=1,nx do
    for j=1,ny do
      r[#r+1] = string.format("%02x%02x%02x",
                              math.floor(i/nx*255),
                              math.floor(j/nx*255),
                              0)
    end
  end
  r = table.concat(r,"\r",1,nx*ny)
  context(r)
end
\stopluacode


\bitmapimage[x=100,y=100,width=4cm, height=4cm,color=rgb]{\ctxlua{document.TestBitmap(100,100)}}

\stoptext

See also

• grph-inc.mkiv

Help from ConTeXt-Mailinglist/Forum

All issues with:

• \bitmapimage on the mailing list (all results)
• \bitmapimage on the mailing list (subject only)
• \bitmapimage on stack exchange
• \bitmapimage in ConTeXt's source