Èñïîëüçîâàíèå ôîðìàòà PNG â Tux Paint

Tux Paint - Ïðîñòàÿ ïðîãðàììà ðèñîâàíèÿ äëÿ äåòåé.

Copyright 2005 by Bill Kendrick and others
bill@newbreedsoftware.com
http://www.newbreedsoftware.com/tuxpaint/

27 èþíÿ 2002 - 9 ìàðòà 2005
$Id: PNG.txt,v 1.1 2007/08/12 19:15:15 wkendrick Exp $


Î PNG
----------
  PNG - ýòî ãðàôè÷åñêèé ôîðìàò, ÷ü¸ íàçâàíèå ðàñøèôðîâûâàåòñÿ êàê Portable Network Graphic (Ïåðåíîñèìàÿ ñåòåâàÿ ãðàôèêà). 
  Ýòî îòêðûòûé ñòàíäàðò, íå çàùèù¸ííûé ïàòåíòàìè (â îòëè÷èå îò GIF). Ýòî ôîðìàò ñ âûñîêèì óðîâíåì êîìïðåññèè äàííûõ
  (íî áåç ïîòåðè êà÷åñòâà, â îòëè÷èå îò JPEG, - ïîòåðÿ êà÷åñòâà ïîçâîëÿåò äåëàòü ôàéë ìåíüøå ðàçìåðîì,
  íî ïðèâîäèò ê ïîòåðå ÷àñòè äàííûõ ïðè ñîõðàíåíèè),
  ñ ïîääåðæêîé 24-áèòíîãî öâåòà (16,7 ìèëëèîíîâ öâåòîâ), à òàêæå
  "àëüôà-êàíàëà" - ò.å. êàæäûé ïèêñåë ìîæåò èìåòü ðàçëè÷íóþ ñòåïåíü
  ïðîçðà÷íîñòè.

  Äëÿ ïîëó÷åíèÿ äîïîëíèòåëüíîé èíôîðìàöèè, ïîñåòèòå:  http://www.libpng.org/

  Ýòè îñîáåííîñòè (îòêðûòîñòü, îòñóòñòâèå ïîòåðè êà÷åñòâà, êîìïðåññèÿ äàííûõ, ïîääåðæêà ïðîçðà÷íîñòè)
  ïðèâåëè ê âûáîðó äàííîãî ôîðìàòà äëÿ Tux Paint.  (Ïîääåðæêà PNG â Tux Paint
  îáåñïå÷èâàåòñÿ îòêðûòîé áèáëèîòåêîé SDL_Image, à â íå¸ âçÿòà
  èç áèáëèîòåêè libPNG.)

  Ïîääåðæêà áîëüøîãî êîëè÷åñòâà öâåòîâ ïîçâîëÿåò èñïîëüçîâàòü â TuxPaint ôîòîðåàëèñòè÷íûå
  øòàìïû, à ïðîçðà÷íîñòü ïîçâîëÿåò ñîçäàâàòü êèñòè âûñîêîãî
  êà÷åñòâà.


Êàê ñîçäàòü PNG
----------------
  Íèæå ïðèâåä¸í î÷åíü ñæàòûé ñïèñîê ñïîñîáîâ ñîçäàíèÿ PNG è
  êîíâåðòàöèè ñóùåñòâóþùèõ èçîáðàæåíèé â PNG.


  Ïîëüçîâàòåëÿì Linux/Unix
  ----------------
    GIMP
    --------
      Íàèëó÷øèé èíñòðóìåíò ñîçäàíèÿ ðèñóíêîâ PNG äëÿ èñïîëüçîâàíèÿ â Tux Paint ýòî
      GIMP (GNU Image Manipulation Program) - âûñîêîêà÷åñòâåííàÿ
      îòêðûòàÿ ïðîãðàììà èíòåðàêòèâíîãî ðèñîâàíèÿ è ðåäàêòèðîâàíèÿ ôîòîãðàôèé.

      Âåðîÿòíî, îíà óæå óñòàíîâëåíà â Âàøåé ñèñòåìå Linux. Åñëè íåò, îíà
      íàâåðíÿêà äîñòóïíà íà èíñòàëëÿöèîííîì äèñêå èëè íà
      ñàéòå, ñ êîòîðîãî Âû ñêà÷àëè äèñòðèáóòèâ.  ïðîòèâíîì ñëó÷àå:

        http://www.gimp.org/


    Krita
    -----
      Krita - ïðèëîæåíèå äëÿ ðèñîâàíèÿ è ðåäàêòèðîâàíèÿ èçîáðàæåíèÿ, âõîäÿùåå â KOffice.

        http://koffice.kde.org/krita/


    NetPBM
    ------
      NetPBM - ýòî êîëëåêöèÿ îòêðûòûõ óòèëèò êîìàíäíîé ñòðîêè, êîíâåðòèðóþùèõ
      â è èç ðàçëè÷íûõ ôîðìàòîâ, âêëþ÷àÿ GIF, TIFF, BMP, PNG è ìíîãèå äðóãèå.

      ÏÐÈÌÅ×ÀÍÈÅ: Ôîðìàòû NetPBM (Portable Bitmap: PBM,
      Portable Greymap: PGM, Portable Pixmap: PPM, è îáùèé
      Portable Any Map: PNM) íå ïîääåðæèâàþò àëüôà-êàíàë, òàê ÷òî ëþáàÿ
      èíôîðìàöèÿ î ïðîçðà÷íîñòè (íàïðèìåð, èç ôàéëà GIF) áóäåò ïîòåðÿíà! Èñïîëüçóéòå GIMP!

      Âåðîÿòíî, îíè óæå óñòàíîâëåíû â Âàøåé ñèñòåìå Linux. Åñëè íåò, îíè
      íàâåðíÿêà äîñòóïíû íà èíñòàëëÿöèîííîì äèñêå èëè íà
      ñàéòå, ñ êîòîðîãî Âû ñêà÷àëè äèñòðèáóòèâ.  ïðîòèâíîì ñëó÷àå:

        http://netpbm.sourceforge.net/


    cjpeg/djpeg
    -----------
      "cjpeg" è "djpeg" - ïðîãðàììû êîìàíäíîé ñòðîêè, êîíâåðòèðóþùèå ìåæäó
      ôîðìàòîì NetPBM Portable Any Map (PNM) è JPEG.

      Âåðîÿòíî, îíè óæå óñòàíîâëåíû â Âàøåé ñèñòåìå Linux (ïîä Debian îíè äîñòóïíû â ïàêåòå "libjpeg-progs").
      Åñëè íåò, îíè íàâåðíÿêà äîñòóïíû íà èíñòàëëÿöèîííîì äèñêå èëè íà
      ñàéòå, ñ êîòîðîãî Âû ñêà÷àëè äèñòðèáóòèâ.  ïðîòèâíîì ñëó÷àå:

        ftp://ftp.uu.net/graphics/jpeg/


  Ïîëüçîâàòåëÿì Windows
  -------------
    The Gimp
      http://www.gimp.org/~tml/gimp/win32/

    Canvas (Deneba)
      http://www.deneba.com/products/canvas8/default2.html

    CorelDRAW (Corel)
      http://www.corel.com/

    Fireworks (Macromedia)
      http://macromedia.com/software/fireworks/
      
    Illustrator (Adobe)
      http://www.adobe.com/products/illustrator/main.html

    Paint Shop Pro (Jasc)
      http://www.jasc.com/products/psp/
    
    Photoshop (Adobe)
      http://www.adobe.com/products/photoshop/main.html

    PIXresizer (Bluefive software)
      http://bluefive.pair.com/pixresizer.htm


  Ïîëüçîâàòåëÿì Macintosh
  ---------------
    Canvas (Deneba)
      http://www.deneba.com/products/canvas8/default2.html

    CorelDRAW (Corel)
      http://www.corel.com/

    Fireworks (Macromedia)
      http://macromedia.com/software/fireworks/

    GraphicConverter (Lemke Software)
      http://www.lemkesoft.de/us_gcabout.html

    Illustrator (Adobe)
      http://www.adobe.com/products/illustrator/main.html
      
    Photoshop (Adobe)
      http://www.adobe.com/products/photoshop/main.html


Äîïîëíèòåëüíàÿ èíôîðìàöèÿ
----------
  Íà âåá-ñàéòå libPNG ïðèâåä¸í ñïèñîê ãðàôè÷åñêèõ ðåäàêòîðîâ è êîíâåðòîðîâ,
  ïîääåðæèâàþùèõ ôîðìàò PNG:

    http://www.libpng.org/pub/png/pngaped.html
    http://www.libpng.org/pub/png/pngapcv.html