Kyauta Mai Ƙididdige Aspect Ratio

Yadda Yake Aiki

Duk yanayoyin lissafi guda uku — sauƙaƙa rabo, samo girman da suka rasa, da sake-girma da rabo tsayayye — suna gudana a matsayin lissafin JavaScript tsantsa a burauzarka ta amfani da algorithm na GCD na Euclidean da aka rubuta da hannu. Babu ɗakin karatu, babu uwar garke, babu lodar fayil da abin ya shafa.

1. 1
   GCD yana rage rabo

   Lokacin da ka shigar da fadi da tsawo, kayan aikin yana gudanar da algorithm na Euclid (gcd(a, b) = gcd(b, a % b)) sau da yawa har sai ragowar ta zama sifili, sannan yana raba bangarorin biyu da wannan mai rabewa don samar da rabo na cikakkiyar lamba mai sauƙi, misali 1920 × 1080 ta zama 16:9.
2. 2
   Neman rabo mai suna

   Ana kwatanta rabo na decimal (fadi / tsawo) da tebur da aka rubuta kai tsaye na rabo 12 na yau da kullum — 1:1, 4:3, 16:9, 21:9, 2.39:1, da sauransu. Idan bambancin yana cikin 0.05, ana nuna suna mafi kusa tare da rabo mai sauƙi.
3. 3
   Lissafin girma da aka samo ko sake-girma

   A yanayin Rabo-zuwa-Girma, ana lissafta bangaren da ya rasa a matsayin sanannunKimar / rabo (ko sanannunKimar * rabo), an zagaya zuwa cikakkiyar lamba mafi kusa, tare da madadin da yake samun mafi kusa cikakkiyar-lamba na yawan rabo mai sauƙi. A yanayin Sake-girma, ana lissafta bangaren da aka kulle a matsayin (sabonGirma * ainihinDaya) / ainihinBiyu — ninkawa-tsallake guda daya.
4. 4
   Ƙudurori masu dacewa an lissafa su

   Bayan sauƙaƙawa, kayan aikin yana bin jeri tsayayye na fadi 14 na al'ada (480 px zuwa 7680 px) kuma yana gwada tw % simplifiedWidth === 0 don gano har zuwa ƙudurori shida da suke da iri ɗayan rabo, yana jera su don kwafi da dannawa ɗaya.

Kayan Aiki Masu Alaƙa