I-6.2 Splines
Ngakolunye uhlangothi, i-splines yimihlobo yamakhanti athambile adalwe ngokwendlela ekhethiwe ukuhumusha amaphuzu abonisiwe esikrinini.
E-Autocad, i-spline ichazwa njenge- "non-umfaniswano wokulinganisa i-Bezier-spline curve" (NURBS), okusho ukuthi ijika alihlanganisiwe ngama-arcs noma ama-elliptical arcs. Ijika elilungiselelwe kahle, empeleni, elisisiza ukudala imidwebo engxenye ngama-curve aphunyuka ekujwayeleni kwezinto ezilula. Njengoba umfundi esecabanga, izinhlobo eziningi zezimoto, ngokwesibonelo, kanye nezinhlobo zamadivayisi amaningi e-ergonomic, zidinga ukudweba ama-curves anjalo. Kunezindlela ezimbili zokwakha umugqa: ngama-setpoints noma ngama-vertices okulawula.
I-spline enamaphuzu asethelwe idlula ngamaphuzu akhonjiswe esibukweni. Kodwa-ke, inketho ethi "Knots" ikuvumela ukuthi ukhethe izindlela ezihlukile zezibalo zokuphazanyiswa yipline, ezingakhiqiza ijika elihlukile ngamaphuzu afanayo.
Futhi, inketho ye "toLerance" yomyalo inquma ukunemba lapho ijika lizovumelana namaphoyinti amakiwe. Inani lokulungiswa elilingana no-zero lizobangela ukuba ijika lidlule ngokuqinile kulawa maphuzu, noma iliphi inani ngaphandle kokuthi "lizosusa ijika lihlukane namaphoyinti. Ake sibheke ukwakhiwa kophawu olunamaphuzu asethiwe kepha ngokubekezelelana okuhlukile.
Kungenzeka ukuthi usuvele uqaphele ukuthi ekuqaleni komyalo sinenketho ethi "Indlela", evumela ukuthi sishintshele kwindlela yesibili yokwakha ama-splines, okuwukuthi, usebenzisa ama-vertices wokulawula, yize-ke nathi singayikhetha le ndlela ngqo enkingeni yayo I-Ribbon
I-splines eyenziwe nge-vertices yokulawula ikhiqizwa ngamaphoyinti ukuthi, ndawonye, akhiqize imigqa yesikhashana ye-polygon ezokwenza ukuthi inqume ukuma kwe-spline. Inzuzo yale ndlela yukuthi lezi zitho zinikeza ukulawula okuphezulu phezu kokuhlelwa kwe-spline, nakuba, ngokuhlela, kungenzeka ukushintsha uhlangothi lwamaphuzu okulungiswa ukuze ulawule ama-vertic futhi ngokuphambene nalokho.
Nakuba ukuhlela iziphephelo kungukuthi isahluko se-18, singalindela ukuthi uma ukhetha u-spline, singasebenzisa ukuphoqa kwe-triangular ukushintsha ukuboniswa kwamaphoyinti okulungiswa noma ama-vertic alawulayo. Singafaka futhi ezinye noma ezinye, sizilungise noma siziqede.