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Poligoane monotone [pdf]

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Triangularea unui poligon y-monoton (2)<br />

• Se continua cautarea atat<br />

timp cat un lant contine o<br />

singura muchie, iar cealalta<br />

muchie este concava.<br />

• La aparitia unei muchii<br />

convexe in lantul concav (sau<br />

o a doua muchie apare in<br />

celalalt lant), se trianguleaza<br />

cat mai mult posibil folosind<br />

un model de evantai.<br />

• Complexitate in timp: O(k)<br />

▫ k = nr varfuri poligon.<br />

lantul stang lantul drept<br />

varf inferior<br />

varf superior

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