Hacking "The GLMatrix"

A gare ni matsayi na biyu.. .. Zan nuna muku (wani abu da wasu zasu iya samu mara amfani sosai) kamar canza launi na wanda ya fi so akan aikin allo (allon allo, allon allo) game da xscreensaver, GLMmatrix, wanda idan baku sani ba shine na'urar kwaikwayo na alamun yau da kullun da ke faɗuwa ta hanyar saka idanu a cikin salon Matrix tare da kyawawan tasirin 3D. Ga hoto:

Kamar yadda nake matukar damuwa, kuma kwamfutata an tsara ta tare da launuka baƙar fata da shuɗin halayyar Arch Linux (wanda yayi kyau sosai tare da shudi mai haske mai haske) .. ..da hankula koren launi na Matrix, bai haɗu da ni ba (ko kuma yadda mutum zai ce a nan da tsakanin yara, har ma da hancin).

Don cimma wannan, za mu shiga tsakani a cikin lambar tushe na xscreensaver, kada ku firgita da ƙwarewa, yana da sauƙi, kuma zan jagora mataki-mataki don su cimma hakan; da wannan nake so in fada muku, cewa ba zan bar abubuwan da aka riga aka tauna ba, amma hakan manufar ita ce, su sha kuma su sanya hannu..ba tsoro.

Mu yi..

1- Zazzage lambar tushe na xscreensaver.

Zamu iya shiga shafin xscreensaver, kuma muna sauke sabuwar sigar source code (lambar tushe).

Ko za mu iya zazzage kai tsaye daga m con wget, koyaushe sanin sigar shi, a wannan yanayin 5.20:

 $ wget http://www.jwz.org/xscreensaver/xscreensaver-5.20.tar.gz

Mun cire shi:

 $ tar -xf xscreensaver-5.20.tar.gz

 2- Duba abubuwan dogaro.

Za mu tabbatar da cewa muna da fakitin buƙata don haka za'a iya amfani da xscreensaver, saboda wannan zamuyi amfani da 'saita'. Dole ne kula a kofar fita (Fitarwa) cewa suka bamu, don sanin ko zamu wasu fakiti sun bata, ko akwai wasu kuskure. Idan kunshin ya ɓace, nemi shi kuma zazzage shi (yana iya zama ta hanyar synaptics, apt, pacman, da dai sauransu - ya dogara da abubuwan da aka so da kuma abubuwan da aka rarraba)

-Mu shiga sabon folda da ba a cire shi ba:

 $ cd xscreensaver-5.20/

Muna aiwatar da wadannan:

 $ ./configure

3- Mun tabbatar da ingantaccen aiki.

Idan babu kunshin da ya ɓace, kuma kada a samu babu kuskure; zamu ci gaba shigarwa xscreensaver, don tabbatar da cewa yana aiki daidai.

Muna aiwatarwa:

 $ make

Idan babu kuskure a cikin yi, azaman mai amfani 'tushen' mun shigar da shi:

 # make install

Muna gwada:

 $ xscreensaver-demo

4- Gyara / hacks/glx/glmatrix.c

Zasuyi magana da su editan rubutu fi so (vim, nano, gedit, da sauransu) a harkata na gani, fayil ɗin da za mu gyara a wannan yanayin:

 $ vi ./hacks/glx/glmatrix.c

Dole ne su sami wani toshe tare da wadannan siffar:
{
unsigned long p = XGetPixel (xi, x, y);
unsigned char r = (p >> rpos) & 0xFF;
unsigned char g = (p >> gpos) & 0xFF;
unsigned char b = (p >> bpos) & 0xFF;
unsigned char a = g;
g = 0xFF;
p = (r << rpos) | (g << gpos) | (b << bpos) | (a << apos);
XPutPixel (xi, x, y, p);
}

Y mun kara kamar haka launi da ake so:
{
unsigned long p = XGetPixel (xi, x, y);
unsigned char r = (p >> rpos) & 0xFF;
unsigned char g = (p >> gpos) & 0xFF;
unsigned char b = (p >> bpos) & 0xFF;
unsigned char a = g;
r = 0x71;
g = 0x93;
b = 0xD1;
p = (r << rpos) | (g << gpos) | (b << bpos) | (a << apos);
XPutPixel (xi, x, y, p);
}
Kasancewa cikin RGB Hexadecimal (ja-kore-shuɗi)

Alal misali, halayyar shudi na Arch Linux shi ne: #1793D1, sauran:

r=0x71;
g=0x93;
b = 0xD1;

Muna kiyaye canje-canje.

5- Mun sake tattara sabon xscreensaver tare da glmatrix da aka gyara.

A wannan gaba zamu yi kusan kamar yadda muke a cikin aya 2, amma wannan lokacin don kama canje-canje da muka yi.

Muna aiwatarwa:

 $ make clean

Sannan:

 $ make

Idan babu wani irin kuskure da ya zo a yi, azaman mai amfani 'tushen' muna aiwatarwa:

 # make install

6- Muna aiwatarwa, tabbatarwa, daidaitawa da jin daɗi.

Muna aiwatarwa:

 $ xscreensaver-demo

A cikin jerin da muka zaba GLMmatrix:

Kuma a cikin gabatarwar ya kamata ya riga an gani a cikin launi da suka zaɓa.

Sanya don dandano .. da ji dadin 😉

7- Wasu misalai na launuka daban-daban. (+ TAMBAYA)

Tip: sani a launi en Gwangwazo ina amfani da GIMP, Muna buɗe launuka masu launi da adadi kamar "Sanarwar HTML". Hakanan zamu iya danna 'o'kuma ɗauki launi na hoto don sanin menene launinsa a Hex.

Ina fata kun ji daɗin gwadawa da rubuta shi kamar yadda na yi. Duk tambayoyin da kuke yi ba jinkirta tuntuɓarku ba.

Happy hacking