Zolemba ndi Zolepheretsa ndi AutoCAD - Gawo 3

MUTU 15: Dongosolo laumunthu Wotengera

Mu chaputala cha 3 cha bukuli timaphunzirira momwe zinthu zimayendera, chofunikira kwambiri pakuwongolera zojambula zenizeni, osati ku Autocad, komanso kujambula mwaluso. Mu chaputala chimenecho timaphunziranso momwe tingayambitsire ma Coronia ndi ma polar organices, amtheradi komanso wachibale. Chifukwa chake zikuwonekeratu kuti chifukwa cha ndege ya Cartesian, kapena dongosolo loyendetsa, titha kutanthauzira komwe lingaliro lililonse pazenera pokhudzana ndi mfundo yotchedwa chiyambi yokha ndi ma ax ax ya X ndi axis ya Y muzojambula mbali ziwiri ndikuwonjezera Z axis mu mbali zitatu.
Kuphatikizanso, pojambula ndi zinthu zomwe zidapangidwa kale, malo omwe maziko ake amakhalanso ndi ofanana. Ndiye kuti, ngati titha kusankha kuti lingaliro lililonse pa skrini likugwirizanitsa X = 0, Y = 0 ndi Z = 0, ndiye kuti zolumikizira za mfundo zina zonsezojambulajambulidwezi zidzasinthidwanso pamfundoyi. Mwachidule, izi ndi zomwe a People Coordinate System (SCP) akunena, kukhala wokhoza kupereka lingaliro lililonse lazogwirizira, komanso kufotokozera tanthauzo la nkhwangwa iliyonse ya Cartesian m'njira yapadera. Chifukwa chake, pali njira zambiri zopangira SCP. Koma tiyeni tiwone mwadongosolo.

15.1 Chithunzi cha SCP

Chizindikiro cha SCP, mu mawonekedwe a default a Autocad, chili pakona yakumanzere kwa chophimba, ndendende komwe kunayambira, komwe X = 0 ndi Y = 0. Kuchokera pamenepo, X axis ili ndi mfundo zake zabwino kumanja ndi zomwe zimayang'ana pamwamba pa Y, ndiye kuti, skrini imafanana ndi 1 quadrant monga tikuwonera m'gawo la 3.2. Kenako, ax ax ya Z ndi mzere wongoyerekeza wophimba, yemwe malingaliro ake abwino amapita m'maso mwa wogwiritsa ntchito ndege yomwe idapangidwa ndi mawonekedwe ofananawo. Komabe, chida cha SCP chitha kupangidwanso kuti chizikhalabe kumunsi kumanzere kwa chophimba, ngakhale makina ake samagwirizana ndi zomwe zimayambira, kotero kuti chithunzi chimakwaniritsa ntchito yake posonyeza momwe nkhwangwa zake ziliri. mu chojambulachi Izi ndi zina zitha kukhazikitsidwa ndi menyu wazomwe zimawoneka ngati chithunzi chokha chikasankhidwa.

Tikagwiritsa ntchito mawonekedwe a 2D a chizindikirocho, nkhwangwa ya Z imaleka kuwonekera, izi zimawonekera bwino tikamagwiritsa ntchito mawonekedwe a isometric a Chithunzi.

Zojambula ziwiri zokha, monga momwe tikuonera, kugwiritsa ntchito chizindikiro chimodzi kapena china sikudziwika kwenikweni. Koma zomwezo sizinganenedwenso pazithunzi za 2D muzojambula zitatu. Komabe, kusintha mawonekedwe mu bokosi la zokambirana ndikosavuta, kotero kuti wogwiritsa ntchito amangogwiritsa ntchito yomwe ili yoyenera mlandu uliwonse. Zina zonse zomwe zili m'bokosi la zokambirana zili pafupifupi zongokhala, popeza mudzatha kutsimikizira: mukufuna mtundu wanji pazithunzi ndi malo a pepala (mafunso omwe akhale mutu wophunziridwa mu Chaputala 29), kodi mukufuna mizere yotani za chithunzi mu 3D ndi kukula komwe adzakhale nako pazenera.
Zosankha zonsezi sizipanga System Coordine System, chifukwa sizisintha kumene, koma kunali kofunikira kuzibwereza chifukwa ndi chithunzithunzi chomwe chingatisonyeze mosavuta zomwe Coordinate System yomwe tikugwiritsa ntchito. Kupanga SCP tidzagwiritsa ntchito lamulo kapena zida pagawo lotsatirali.