{"id":294,"date":"2022-01-21T05:35:05","date_gmt":"2022-01-21T05:35:05","guid":{"rendered":"https:\/\/3dstudio.co\/?p=294"},"modified":"2026-03-23T05:35:29","modified_gmt":"2026-03-23T05:35:29","slug":"nurbs-modeling-software","status":"publish","type":"post","link":"https:\/\/3dstudio.co\/vi\/3d-modeling\/nurbs-modeling-software\/","title":{"rendered":"Gi\u1edbi thi\u1ec7u v\u1ec1 Ph\u1ea7n m\u1ec1m l\u1eadp m\u00f4 h\u00ecnh NURBS"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"introduction\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p>Trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n c\u1ea7n th\u1ec3 hi\u1ec7n h\u00ecnh h\u1ecdc chu\u1ea9n c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00e0ng ch\u00ednh x\u00e1c c\u00e0ng t\u1ed1t, m\u00f4 h\u00ecnh NURBS l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111i c\u00f9ng.&nbsp;<\/p>\n\n\n\n<p>\u0110\u1ed9 ch\u00ednh x\u00e1c l\u00e0 y\u1ebfu t\u1ed1 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn t\u1ed1t cho vi\u1ec7c l\u1eadp m\u00f4 h\u00ecnh c\u00f3 s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a m\u00e1y t\u00ednh (CAM). Ngo\u00e0i ra, NURBS l\u00e0 m\u1ed9t trong nhi\u1ec1u k\u1ef9 thu\u1eadt l\u1eadp m\u00f4 h\u00ecnh, b\u1ea1n kh\u00f4ng th\u1ec3 b\u1ecf l\u1ee1 khi h\u1ecdc <a href=\"http:\/\/3dstudio.co\/vi\/how-to-3d-model\/\">l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 m\u00f4 h\u00ecnh 3D<\/a>.<\/p>\n\n\n\n<p>M\u1eb7c d\u00f9 n\u00f3 c\u00f3 r\u1ea5t nhi\u1ec1u l\u1ee3i th\u1ebf do ch\u1ea5t l\u01b0\u1ee3ng surface - N\u00f3 th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u00ec s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ea1o m\u00f4 h\u00ecnh. V\u00ec v\u1eady, \u0111\u00e3 \u0111\u1ebfn l\u00fac x\u00f3a b\u1ecf nh\u1eefng nghi ng\u1edd v\u00e0 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 NURBS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-nurbs-modeling\">M\u00f4 h\u00ecnh NURBS l\u00e0 g\u00ec?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"578\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-model-lantern.jpg\" alt=\"\u0111\u00e8n l\u1ed3ng m\u00f4 h\u00ecnh nurbs\" class=\"wp-image-575\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-model-lantern.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-model-lantern-300x173.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-model-lantern-768x444.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-model-lantern-18x10.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>M\u00f4 h\u00ecnh NURBS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Non-Uniform Rational B-Splines. H\u1ecd l\u00e0 m\u1ed9t<strong> <\/strong>lo\u1ea1i <a href=\"https:\/\/www.tutorialspoint.com\/computer_graphics\/computer_graphics_curves.htm\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">\u0110\u01b0\u1eddng cong Bezier<\/a> \u0111\u01b0\u1ee3c t\u1ea1o ra th\u00f4ng qua m\u1ed9t c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc. V\u00ec v\u1eady, n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 <strong>bi\u1ec3u di\u1ec5n c\u00e1c lo\u1ea1i h\u00ecnh 3D kh\u00e1c nhau b\u1eb1ng to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p<\/strong>.&nbsp;<\/p>\n\n\n\n<p>\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c m\u00f4 h\u00ecnh NURBS c\u1ef1c k\u1ef3 linh ho\u1ea1t v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c quy tr\u00ecnh t\u1ea1o m\u00f4 h\u00ecnh surface: minh h\u1ecda chi ti\u1ebft, ho\u1ea1t \u1ea3nh v\u00e0 thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-the-best-software-for-nurbs-modeling\"><meta charset=\"utf-8\">Ph\u1ea7n m\u1ec1m t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1eadp m\u00f4 h\u00ecnh NURBS l\u00e0 g\u00ec?<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li><a href=\"https:\/\/www.blender.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">M\u00e1y xay<\/a> - C\u00f4ng c\u1ee5 mi\u1ec5n ph\u00ed t\u1ed1t nh\u1ea5t cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u. B\u1ea1n c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh tuy\u1ec7t v\u1eddi d\u00e0nh cho l\u1eadp m\u00f4 h\u00ecnh NURBS.<\/li><li><a href=\"https:\/\/www.rhino3d.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">T\u00ea gi\u00e1c<\/a> - N\u00f3 d\u1ec5 s\u1eed d\u1ee5ng h\u01a1n Studiotools r\u1ea5t nhi\u1ec1u. Nhi\u1ec1u ng\u01b0\u1eddi c\u0169ng th\u00edch Rhino v\u00ec c\u00e1c addon m\u00f4 h\u00ecnh tham s\u1ed1 c\u1ee7a n\u00f3.<\/li><li><a href=\"http:\/\/moi3d.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Mol<\/a> - n\u00f3 l\u00e0 m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh th\u00e2n thi\u1ec7n h\u01a1n v\u00e0 d\u1ec5 d\u00e0ng h\u01a1n. N\u00f3 c\u00f3 gi\u00e1 th\u1ea5p h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi Rhino.<\/li><li><a href=\"https:\/\/www.autodesk.com\/products\/alias-products\/overview\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">B\u00ed danh Autodesk<\/a> - Ng\u01b0\u1eddi s\u1eeda \u0111\u1ed5i NURBS t\u1ed1t nh\u1ea5t cho \u0111\u1ebfn nay. N\u00f3 c\u00f3 th\u1ec3 x\u1eed l\u00fd surfaces t\u1ed1t h\u01a1n so v\u1edbi Rhino. N\u1ebfu b\u1ea1n \u0111ang l\u00e0m c\u00e1c m\u00f4 h\u00ecnh s\u1ebd \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t, t\u00f4i th\u1ef1c s\u1ef1 khuy\u00ean b\u1ea1n n\u00ean d\u00f9ng th\u1eed ph\u1ea7n m\u1ec1m n\u00e0y.<\/li><li><a href=\"http:\/\/ayam.sourceforge.net\/\" target=\"_blank\" rel=\"noopener\">Ayam<\/a> - Th\u00eam m\u1ed9t t\u00f9y ch\u1ecdn mi\u1ec5n ph\u00ed. N\u00f3 v\u1eabn \u0111ang \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt v\u00e0 ph\u00e1t tri\u1ec3n cho \u0111\u1ebfn ng\u00e0y nay.<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"625\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/best-nurbs-modeling-programs.jpg\" alt=\"ph\u1ea7n m\u1ec1m m\u00f4 h\u00ecnh nurbs t\u1ed1t nh\u1ea5t\" class=\"wp-image-580\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/best-nurbs-modeling-programs.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/best-nurbs-modeling-programs-300x188.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/best-nurbs-modeling-programs-768x480.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/best-nurbs-modeling-programs-18x12.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"modeling-with-nurbs\">L\u1eadp m\u00f4 h\u00ecnh v\u1edbi NURBS<\/h2>\n\n\n\n<p>M\u00f4 h\u00ecnh h\u00f3a NURBS l\u00e0 m\u1ed9t c\u01a1 s\u1edf tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u1ea1o ra c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng 3D. V\u1edbi c\u00f4ng ngh\u1ec7 n\u00e0y, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng b\u1eb1ng <a href=\"https:\/\/knowledge.autodesk.com\/support\/maya\/learn-explore\/caas\/CloudHelp\/cloudhelp\/2018\/ENU\/Maya-Basics\/files\/GUID-BE2DAF5E-2EF9-48B0-80B6-AB65533D6E9F-htm.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">NURBS g\u1ed1c ho\u1eb7c surfaces<\/a>.&nbsp;<\/p>\n\n\n\n<p>Trong tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea7u ti\u00ean, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u1edf d\u1ea1ng c\u00e1c d\u1ea1ng h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n nh\u01b0 h\u00ecnh l\u1eadp ph\u01b0\u01a1ng, h\u00ecnh tr\u1ee5, h\u00ecnh n\u00f3n, h\u00ecnh c\u1ea7u, v.v. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o b\u1ea5t k\u1ef3 h\u00ecnh d\u1ea1ng 3D n\u00e0o t\u1eeb c\u00e1c d\u1ea1ng n\u00e0y b\u1eb1ng c\u00e1ch c\u1eaft b\u1ecf c\u00e1c ph\u1ea7n kh\u00f4ng mong mu\u1ed1n, s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 \u0111i\u00eau kh\u1eafc ho\u1eb7c thay \u0111\u1ed5i c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a c\u00e1c nguy\u00ean th\u1ee7y.&nbsp;<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c NURBS surface, b\u1ea1n c\u1ea7n b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch x\u00e2y d\u1ef1ng c\u00e1c \u0111\u01b0\u1eddng cong NURBS v\u00e0 surface \u0111\u1ec3 x\u00e2y d\u1ef1ng bi\u1ec3u m\u1eabu 3D d\u1ef1a tr\u00ean \u0111\u00f3. Ch\u1ec9 khi \u0111\u00f3, b\u1ea1n m\u1edbi n\u00ean t\u1ea1o NURBS surface.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"NURBS ph\u1ea7n 2: T\u1ea1o surface t\u1eeb c\u00e1c \u0111\u01b0\u1eddng cong\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/pDEyX0lhAZo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption>NURBS ph\u1ea7n 2: T\u1ea1o surface t\u1eeb \u0111\u01b0\u1eddng cong NURBS<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-the-difference-between-polygonal-and-nurbs-modeling\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa l\u1eadp m\u00f4 h\u00ecnh Polygonal v\u00e0 NURBS l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>B\u1ea1n s\u1ebd g\u1eb7p m\u00f4 h\u00ecnh polygonal v\u00e0 NURBS trong b\u1ea5t k\u1ef3 <a href=\"https:\/\/3dstudio.co\/vi\/3d-modeling-services\/\">D\u1ecbch v\u1ee5 m\u00f4 h\u00ecnh 3D<\/a> v\u00ec ch\u00fang kh\u00e1 gi\u1ed1ng nhau. Tuy nhi\u00ean, m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t l\u00e0m cho ch\u00fang kh\u00e1c nhau. V\u00ec b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00e3 tr\u1ea3i qua m\u00f4 h\u00ecnh polygonal, ch\u00fang t\u00f4i ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y \u0111\u1ec3 th\u1ec3 hi\u1ec7n s\u1ef1 t\u01b0\u01a1ng ph\u1ea3n.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"modeling-workflow\">M\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh l\u00e0m vi\u1ec7c<\/h3>\n\n\n\n<p>Vi\u1ec7c t\u1ea1o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong m\u00f4 h\u00ecnh polygonal r\u1ea5t d\u1ec5 d\u00e0ng v\u00ec n\u00f3 th\u01b0\u1eddng l\u00e0 m\u1ed9t N-gon \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thao t\u00e1c v\u00e0 thay \u0111\u1ed5i mesh.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Trong NURBS, ng\u01b0\u1ee3c l\u1ea1i, <strong>c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng lu\u00f4n c\u00f3 4 m\u1eb7t, \u0111i\u1ec1u n\u00e0y \u0111\u1eb7t ra m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf trong quy tr\u00ecnh l\u00e0m vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a<\/strong>.<\/p>\n\n\n\n<p>H\u01a1n n\u1eefa, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng NURBS lu\u00f4n t\u00e1ch bi\u1ec7t v\u00e0 kh\u00f3 g\u1eafn v\u00e0o, m\u1eb7c d\u00f9 b\u1ea1n th\u1eadm ch\u00ed s\u1ebd kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1eddng n\u1ed1i gi\u1eefa ch\u00fang.&nbsp;<\/p>\n\n\n\n<p class=\"tip\"><strong>M\u1eb9o chuy\u00ean nghi\u1ec7p: <\/strong>chuy\u1ec3n \u0111\u1ed5i m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng NURBS th\u00e0nh m\u1ed9t <a href=\"http:\/\/3dstudio.co\/vi\/polygon-mesh\/\">l\u01b0\u1edbi \u0111a gi\u00e1c<\/a> trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n mu\u1ed1n l\u00e0m sinh \u0111\u1ed9ng n\u00f3 \u0111\u1ec3 c\u00e1c kh\u1edbp n\u1ed1i kh\u00f4ng b\u1ecb r\u1eddi ra.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"562\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-modeling-tool-blender.jpg\" alt=\"m\u00e1y xay c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh nurbs\" class=\"wp-image-576\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-modeling-tool-blender.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-modeling-tool-blender-300x169.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-modeling-tool-blender-768x432.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-modeling-tool-blender-18x10.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption>(ngu\u1ed3n <a href=\"https:\/\/www.youtube.com\/watch?v=cEe57tKwUIA&amp;t=12s&amp;ab_channel=JoshGambrell\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">YouTube<\/a>)<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"file-size\">K\u00edch th\u01b0\u1edbc t\u1eadp tin<\/h3>\n\n\n\n<p>\u0110\u00f4i khi, khi b\u1ea1n chuy\u1ec3n c\u00e1c m\u00f4 h\u00ecnh polygonal \u0111\u01b0\u1ee3c t\u1ea1o sang c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 ph\u1ea7n m\u1ec1m m\u00f4 h\u00ecnh 3D kh\u00e1c nhau, c\u00e1c m\u00f4 h\u00ecnh mesh s\u1ebd b\u1ecb b\u00f3p m\u00e9o v\u00ec nhi\u1ec1u l\u00fd do.&nbsp;<\/p>\n\n\n\n<p>Tuy nhi\u00ean, b\u1ea1n c\u00f3 th\u1ec3 kh\u00f4ng face v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1 v\u1edbi m\u00f4 h\u00ecnh NURBS v\u00ec<strong> d\u1ec5 d\u00e0ng \u0111\u1ecdc c\u00e1c t\u1ec7p ch\u1ee9a c\u00e1c \u0111i\u1ec3m m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc<\/strong>. H\u01a1n n\u1eefa,<strong> C\u00e1c t\u1ec7p NURBS c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n<\/strong> \u0111i\u1ec1u n\u00e0y c\u0169ng l\u00e0m cho ch\u00fang d\u1ec5 d\u00e0ng h\u01a1n \u0111\u1ec3 l\u01b0u tr\u1eef.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"texturing\">K\u1ebft c\u1ea5u<\/h3>\n\n\n\n<p>\u0110\u1ec3 d\u1ec5 d\u00e0ng b\u1ecdc c\u00e1c k\u1ebft c\u1ea5u xung quanh \u0111\u1ed1i t\u01b0\u1ee3ng 3D c\u1ee7a b\u1ea1n, b\u1ea1n c\u1ea7n chia n\u00f3 th\u00e0nh m\u1ed9t bi\u1ec3u di\u1ec5n 2D ph\u1eb3ng - a <a href=\"http:\/\/3dstudio.co\/vi\/uv-unwrapping-software\/\">UV map<\/a>. N\u00f3 l\u00e0m cho \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a b\u1ea1n th\u1ef1c t\u1ebf h\u01a1n.&nbsp;<\/p>\n\n\n\n<p>Th\u1eadt kh\u00f4ng may, n\u00f3 s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng v\u1edbi NURBS. <strong>B\u1ea1n kh\u00f4ng th\u1ec3 UV m\u1edf c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng NURBS<\/strong> v\u00ec v\u1eady t\u1ed1t h\u01a1n n\u00ean s\u1eed d\u1ee5ng polygonal mesh \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u1ebft c\u1ea5u tr\u00ean mesh c\u1ee7a b\u1ea1n.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"594\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-uv-maps-texturing.jpg\" alt=\"k\u1ebft c\u1ea5u b\u1ea3n \u0111\u1ed3 uv nurbs\" class=\"wp-image-588\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-uv-maps-texturing.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-uv-maps-texturing-300x178.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-uv-maps-texturing-768x456.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/nurbs-uv-maps-texturing-18x12.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption>(ngu\u1ed3n <a href=\"https:\/\/www.youtube.com\/watch?v=MMk5ILIaafw&amp;ab_channel=MikeCushny\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">YouTube<\/a>)<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"calculations\">T\u00ednh to\u00e1n<\/h3>\n\n\n\n<p>M\u00f4 h\u00ecnh h\u00f3a Polygonal s\u1eed d\u1ee5ng c\u00e1c m\u1eb7t ph\u1eb3ng ph\u1eb3ng ho\u1eb7c c\u00e1c polygon \u0111\u1ec3 t\u1ea1o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng. T\u01b0\u01a1ng \u1ee9ng, n\u00f3 t\u00ednh to\u00e1n c\u00e1c polygon n\u00e0y. Tuy nhi\u00ean, n\u00f3 t\u00ednh to\u00e1n c\u00e1c \u0111\u01b0\u1eddng gi\u1eefa c\u00e1c \u0111i\u1ec3m, v\u00ec v\u1eady n\u00f3 kh\u00f4ng th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng cong m\u01b0\u1ee3t m\u00e0.<\/p>\n\n\n\n<p class=\"note\"><strong>Ghi ch\u00fa: <\/strong>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c nh\u00f3m l\u00e0m m\u1ecbn v\u00e0 t\u0103ng s\u1ed1 l\u01b0\u1ee3ng polygon \u0111\u1ec3 t\u1ea1o ra c\u1ea3m nh\u1eadn v\u1ec1 c\u00e1c \u0111\u01b0\u1eddng cong m\u01b0\u1ee3t m\u00e0 h\u01a1n.<\/p>\n\n\n\n<p><strong>NURBS<\/strong>, M\u1eb7t kh\u00e1c,<strong> s\u1eed d\u1ee5ng to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p \u0111\u1ec3 t\u00ednh to\u00e1n c\u00e1c splines gi\u1eefa c\u00e1c \u0111i\u1ec3m bao g\u1ed3m mesh<\/strong>.<\/p>\n\n\n\n<p>M\u1eb7c d\u00f9 n\u00f3 cho ph\u00e9p \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n so v\u1edbi m\u00f4 h\u00ecnh polygonal, <strong>C\u00e1c ph\u00e9p t\u00ednh NURBS kh\u00f3 x\u1eed l\u00fd h\u01a1n<\/strong>. Kh\u00f4ng c\u00f3 g\u00ec ng\u1ea1c nhi\u00ean khi b\u1ea1n s\u1ebd kh\u00f4ng bao gi\u1edd th\u1ea5y NURBS trong tr\u00f2 ch\u01a1i \u0111i\u1ec7n t\u1eed. N\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 th\u1eddi gian k\u1ebft xu\u1ea5t ph\u1ea3i nhanh.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/difference-between-polygonal-and-nurbs-modeling.jpg\" alt=\"s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u00f4 h\u00ecnh polygonal v\u00e0 nurbs\" class=\"wp-image-577\" srcset=\"https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/difference-between-polygonal-and-nurbs-modeling.jpg 1000w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/difference-between-polygonal-and-nurbs-modeling-300x300.jpg 300w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/difference-between-polygonal-and-nurbs-modeling-150x150.jpg 150w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/difference-between-polygonal-and-nurbs-modeling-768x768.jpg 768w, https:\/\/3dstudio.co\/wp-content\/uploads\/2022\/01\/difference-between-polygonal-and-nurbs-modeling-12x12.jpg 12w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-advantages-of-nurbs\">\u01afu \u0111i\u1ec3m c\u1ee7a NURBS<\/h2>\n\n\n\n<p>C\u00f3 th\u1ec3 s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c ph\u00e9p t\u00ednh to\u00e1n h\u1ecdc gi\u1edd \u0111\u00e2y khi\u1ebfn b\u1ea1n s\u1ee3 h\u00e3i kh\u1ecfi l\u1ed9 tr\u00ecnh NURBS. Trong khi n\u00f3 c\u00f3 qu\u00e1 nhi\u1ec1u \u0111i\u1ec3m ki\u1ec3m so\u00e1t khi so s\u00e1nh v\u1edbi m\u00f4 h\u00ecnh polygonal, n\u00f3 c\u00f3 r\u1ea5t nhi\u1ec1u l\u1ee3i \u00edch m\u00e0 b\u1ea1n kh\u00f4ng n\u00ean b\u1ecf qua. T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 m\u1ed9t <a href=\"http:\/\/3dstudio.co\/vi\/polygon-mesh\/\">l\u01b0\u1edbi \u0111a gi\u00e1c<\/a> n\u01a1i \u0111\u00e2y.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>NURBS surface r\u1ea5t d\u1ec5 x\u00e2y d\u1ef1ng<\/li><li>N\u00f3 cung c\u1ea5p c\u00e1c \u0111\u01b0\u1eddng cong m\u1edf, \u0111\u00f3ng v\u00e0 k\u1eb9p m\u01b0\u1ee3t m\u00e0 h\u01a1n<\/li><li>C\u00e1c lo\u1ea1i NURBS surface \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong c\u00e1c mi\u1ec1n kh\u00e1c nhau nh\u01b0 \u0111\u1ed3 h\u1ecda vect\u01a1<\/li><li>B\u1ea1n c\u00f3 th\u1ec3 nh\u1eadp d\u1eef li\u1ec7u NURBS v\u00e0o ph\u1ea7n m\u1ec1m m\u00f4 h\u00ecnh h\u00f3a, k\u1ebft xu\u1ea5t, ho\u1ea1t \u1ea3nh ho\u1eb7c ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt kh\u00e1c nhau<\/li><li>NURBS gi\u00fap t\u1ea1o \u0111\u01b0\u1eddng cong v\u00e0 c\u00e1c d\u1ea1ng h\u00ecnh d\u1ea1ng 3D h\u1eefu c\u01a1 kh\u00e1c nhau<\/li><li>B\u1ea1n c\u1ea7n \u00edt th\u00f4ng tin h\u01a1n \u0111\u1ec3 bi\u1ec3u di\u1ec5n h\u00ecnh h\u1ecdc NURBS, kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c ph\u00e9p g\u1ea7n \u0111\u00fang faceted<\/li><li>Quy t\u1eafc \u0111\u00e1nh gi\u00e1 c\u1ee7a NURBS \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ch\u00ednh x\u00e1c tr\u00ean m\u1ecdi \u0111\u1ed3 h\u1ecda m\u00e1y t\u00ednh<\/li><\/ul>\n\n\n\n<p>V\u00e0 \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 ph\u1ea7n cu\u1ed1i c\u1ee7a danh s\u00e1ch. Khi b\u1ea1n xem x\u00e9t k\u1ef9 h\u01a1n, b\u1ea1n s\u1ebd ph\u00e1t hi\u1ec7n ra c\u00f2n nhi\u1ec1u \u0111i\u1ec1u h\u01a1n th\u1ebf n\u1eefa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"is-it-worth-a-try-conclusion\">N\u00f3 c\u00f3 \u0111\u00e1ng \u0111\u1ec3 th\u1eed kh\u00f4ng? (S\u1ef1 k\u1ebft lu\u1eadn)<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 m\u00f4 h\u00ecnh NURBS c\u00f3 v\u1ebb gi\u1ed1ng nh\u01b0 m\u1ed9t th\u1ee9 kh\u00f3 b\u1ebb g\u00e3y, nh\u01b0ng b\u1ea1n kh\u00f4ng n\u00ean n\u1ea3n l\u00f2ng khi s\u1eed d\u1ee5ng n\u00f3. \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a bi\u1ec3u di\u1ec5n 3D \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n b\u1eb1ng to\u00e1n h\u1ecdc th\u1ef1c s\u1ef1 mang l\u1ea1i hi\u1ec7u qu\u1ea3.&nbsp;<br>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh NURBS \u0111\u1ec3 t\u1ea1o c\u01a1 s\u1edf. Sau \u0111\u00f3 chuy\u1ec3n \u0111\u1ed5i \u0111\u1ed1i t\u01b0\u1ee3ng th\u00e0nh polygonal mesh. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t kh\u1edfi \u0111\u1ea7u tuy\u1ec7t v\u1eddi ph\u1ea3i kh\u00f4ng?<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u v\u1ec1 m\u1ed9t trong nh\u1eefng k\u1ef9 thu\u1eadt t\u1ea1o m\u00f4 h\u00ecnh 3D ch\u00ednh x\u00e1c nh\u1ea5t? H\u00e3y xem h\u01b0\u1edbng d\u1eabn n\u00e0y v\u1ec1 l\u1eadp m\u00f4 h\u00ecnh NURBS \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam!<\/p>","protected":false},"author":2,"featured_media":562,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2],"tags":[15,13,16],"class_list":["post-294","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3d-modeling","tag-3d-artist","tag-3d-modeling","tag-guide"],"_links":{"self":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts\/294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/comments?post=294"}],"version-history":[{"count":19,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts\/294\/revisions"}],"predecessor-version":[{"id":1291,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/posts\/294\/revisions\/1291"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/media\/562"}],"wp:attachment":[{"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/media?parent=294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/categories?post=294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3dstudio.co\/vi\/wp-json\/wp\/v2\/tags?post=294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}