OpenEuphoria

Re: Masking

• Posted by "Lucius L. Hilley III" <L3Euphoria at bellsouth.net> Nov 09, 2003
• 840 views

This has been tested

--
include ofind.e
procedure display_image2(sequence xy, sequence img)
  integer x, y, s, e, li
  sequence img_mask

  x = xy[1]
  y = xy[2]
  img_mask = (img = 0)
  position(2, 1)
  for Y = 1 to length(img) do
    li = length(img_mask[Y])
    e = 0
    s = find(0, img_mask[Y])
    while (s) and (li > e) do
      e = ofind(1, img_mask[Y] , s+1)
      if (e) then
        e -= 1
      else
        e = li
      end if
      pixel(img[Y][s..e], {x+s, Y+y})

      s = ofind(0, img_mask[Y], e+1)
    end while
  end for
end procedure

        Lucius L. Hilley III - Unkmar

----- Original Message ----- 
From: "Stewart MacKenzie-Leigh" <stewartml89 at msn.com>
To: <EUforum at topica.com>
Sent: Saturday, November 08, 2003 02:30 PM
Subject: Masking


>
>
> Is there a fster way to display a bitmap on the screen without the pixels
> which are the mask color, other than plotting each color individually in a
> loop?
>
> this is the code im using at the moment:
>
> for y = 1 to length(img) do
>     for x = 1 to length(img[y]) do
>         if img[y][x] != MASK_COLOR then
>             pixel(img[y][x], {imgX + x, imgY + y})
>         end if
>     end if
> end for
>
> this is too slow for what i am doing.
>
>
> thanks in advance
>
> StewartML
>
>
>
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>
>