本教程向大家介紹maya nurbs 汽車坐椅建模的過程，教程很經(jīng)典，制作起來(lái)難度也不大，希望教程對(duì)朋友們有所幫助！

翻譯說明： 為了讓大家更能理解這個(gè)教程，我并不翻譯其中一些命令，這樣可以讓一些初學(xué)者 ( 不是很熟悉 maya nurbs 建模命令 ) 更快找到這些命令。另：我的英文不好，所以在翻譯的時(shí)候會(huì)有一些不足之處，如果有讓你發(fā)笑的地方，請(qǐng)你給我提醒，我將更改過來(lái) , 我的 email: chinacache@163.com.
希望可以和大家一同進(jìn)步！

rendered using maya 7.0 (software render)

create seat gear rotater

from front view, create a beveled gear profile (pic 1) and bevel plusit (width 0.5, depth 0.5, extrude depth 1.5 and outer style curve convex out) (pic 2).

在前視窗中創(chuàng)建齒輪的輪廓曲線 (pic 1) 并用 bevel plus 它 ,bevel 的取值 (width 0.5(width 0.5, depth 0.5, extrude depth 1.5 和 outer style curve convex out)(pic 2).

pic 1

pic 2

next, create another profile curve (pic 3) and bevel plus it (width 0.1, depth 0.1, extrude depth 0.2 and outer style curve concave in) (pic4)

接下來(lái)，創(chuàng)建另一條曲線 (pic 3) 并 bevel plus 它，取值如下 (width 0.1, depth 0.1, extrude depth 0.2 and outer style curve concave in) (pic 4).

pic 3

pic 4

create a nurbs cylinder (6 spans), rotate to 90° and rescale it smaller and drag to the center of the bottom right circle corner (pic 5). from side view, tweak the right-end cv's and rescale them smaller (very small until it looks like they are touching each other) (pic6).
youcould use front view zoom to check it, and then adjust 2 more right cv's and drag to the left, until it looks like this image (pic 7), and then duplicate this cylinder and hide the new one (copied) , errh what is this ? duplicate ?... you will know later :)

創(chuàng)建一個(gè) nurbs 圓柱體 (spans 為 6), 旋轉(zhuǎn) 90 度 , 并將它縮小移動(dòng)到如 (fig 5) 所示，切換到側(cè)視窗， 拉伸最右排的 cv 點(diǎn)并將其縮到看上去合成一點(diǎn)為止 .(pic 6) 你可以切換到前視窗當(dāng)中放大來(lái)檢查它，接著調(diào)整最右邊的兩排 cv 點(diǎn) ( 包含我們所縮小的那一排 ) ，并將它們向左移動(dòng)到如 (pic 7) 所示 , 調(diào)整好后復(fù)制這個(gè)曲面，并將復(fù)制出來(lái)的曲面隱藏起來(lái)，為什么 ? 向下看你就會(huì)明白的 ...

pic 5

pic 6

pic 7

now drag the cylinder to the center of the beveled curves (pic 8), nowselectyour beveled surface,selectyour cylinder, then fillet circular it with value of around 0.056 (reverse direction) and then trimit, you will have this cute half hole (pic 9).

將圓柱體移動(dòng)到 bevel 的曲線中心 (pic 8), 現(xiàn)在 -- 選擇你 bevel 出來(lái)的曲面 , 按 shift 鍵選擇圓柱體，然后 circular fillet 它們， circular fillet 取值約為 0.056, 完成后對(duì)它們分別 trim,我們可以得到如 (pic 9).

remember the one cylinder that we hid before ? unhide it, rotate it to 180 of y axis, rescale it smaller a little bit, and place it in the center of this new half hole (pic 10).

你是否記得我們隱藏的那個(gè)曲面 ? 顯示它，在 y 軸方向上旋轉(zhuǎn) 180 度 , 將它縮小一點(diǎn)，并將它移動(dòng)到中心如 (pic 10)

pic 8

pic 9

pic 10

do the same with the bottom left circle corner (pic 11).

左邊的齒輪用同樣的的方法做出 (pic 11)

pic 11

nowselectall of your objects, go to the render menu, thenselectset nurbs tessellation , set curvature tolerance to highest quality, u and v around 5000 , click set and close then render it, then you will have this cute looking object (pic 12).

選擇你所有的物體，進(jìn)入到全局渲染里，設(shè)置 nurbs tessellation , 將 curvature tolerance 高為更高組另， u 和 v 取到 5000, 然后 set and close 并渲染它，這樣我們得到如 (pic 12) 的物體 .

pic 12

wheee...everything is so easy and so smooth with maya isn't it ?, but oops...this is just part 1. :(
note : you could put logo thereordo whatever you want, more detailorsomething... :)

喔 ....maya 是否很簡(jiǎn)單 ? 不要急，以上只是第一節(jié) :(
注意 : 你可以在這里放上你喜歡的標(biāo)記 , 或者刻畫更多的細(xì)節(jié) .... :)

nowselectall these objects, group them and name the group "rotator", and then save this file as "rotator_gear.mb"ordo whatever you like with the file name. :)

現(xiàn)在選擇你所有的物體，并將它們成組，將組命名為 "rotator", 并存儲(chǔ)文件為 "rototor_gearmb"( 也可以是你想用的名字 )

create bottom seat upholstery

制作椅子的扶手

from side view, create 2 profile curves like in this image (pic 13), then from front view, create a nurbs circle with 18 sections, rotate it 90°, then adjust the cv's with the scale and move tools until it looks like in this image (pic 14).

在側(cè)視窗，創(chuàng)建兩條輪廓曲線 (pic 13), 回到前視窗，再創(chuàng)建一條 nurbs 圓形曲線 (section 18), 旋轉(zhuǎn) 90 度，然后調(diào)整它的各 cv 點(diǎn)到像 (pic 14) 所示 .

pic 13

pic 14

here's the perspective view

這是透視圖

then duplicate this curve and rescale it (y axis), move it many times(following the shape of the profile curve) until it looks like this (pic 14). note : you must rescale the start and end curves very small (pic 15).

然后復(fù)制一些曲線并在 y 軸方向上放大或縮小它們，調(diào)整到如 (pic 14). 記住 : 最開始和結(jié)束的曲線你要盡量將其縮到最小 .(pic 15)

pic 14

pic 15

thenselectthese 3 curves (pic 16),selecta couple of the top cv's and then move them to the left a little bit and rotate them also to the left (pic 17).

選擇這 3 條曲線 (pic 16), 將它們的一些 cv 點(diǎn)向左移動(dòng)并消微放大一點(diǎn) (pic 17).

pic 16

pic 17

nowselectall these curves from start to end (not the profile) and then surface loft . you will have this new object (pic 18), now duplicate mirror this new object with the parameters shown here (pic 19).
note : the translate value could be different, but scale -1 is a must for mirror duplicate :)

現(xiàn)在依此選擇這些曲線（不含那條輪廓線 ) 然后 surface loft . 你將得到一個(gè)曲面如 (pic 18), 接著以鏡像的方式復(fù)制這個(gè)物體，復(fù)制的選項(xiàng)請(qǐng)看 (pic 19).
注意 : 移動(dòng) (translate) 的數(shù)值可以有所不同，但是拉伸 (scale) 的數(shù)值為 -1 時(shí)表示以鏡像的方式復(fù)制 .

pic 18

pic 19

ok now you have two of these 2 mirrored objects right ? (pic 20) next, do the same steps (using duplicated curves) to create the center top and bottom upholstery (pic 21). remember to use very small curves for the start and end curves. :)
note : if you want to close the startorend curves, you could also use surface planar .

ok, 現(xiàn)在你有兩個(gè)物體對(duì)嗎 ?(pic 20), 接下來(lái)要做的是，使用相同的方法 ( 復(fù)制 ) 來(lái)創(chuàng)建中間的一些曲線 (pic 21). 記住最開始和最后的曲線要縮到最小 .
注意 : 如果你想閉合整個(gè)曲面，你可以使用 surface planar 命令來(lái)閉合開始和最后的曲線 .

pic 20

pic 21

create top seat upholstery

note : to continue your work and to get more modeling concentration, you could use working by layerorhide your finished model. :)

注意 : 繼續(xù)你的工作前，你可以使用 layer 來(lái)隱藏你已完成的物體 .

from side view, create a profile curve like in this image (pic 22), and then from top view, create a nurbs circle with 18 sections and adjust the cv's until the circle looks like in this image (pic 23). remember... the distances between cv curves are important; try to maintain the same distances, 'cause the distance between the cv's affects the smoothness of the final lofted objects . :)

側(cè)視窗 , 創(chuàng)建一條參考曲線如 (pic 22), 然后切換到頂視窗 , 創(chuàng)建一條 nurbs 圓形曲線 (sections 18) 然后調(diào)整它的 cv 點(diǎn)到像 (pic 23) 所示 . 記住 .... 盡量使每個(gè) cv 點(diǎn)之間的距離一樣， 因?yàn)檫@會(huì)影響到最后 loft 出來(lái)物體的效果 .

pic 22

pic 23

then from side view, duplicate this curve many times following the profile curve (pic 24). adjust every cv's curve, especially the top and bottom curves, it should be turned into lane curveorcircle curve (pic 25).

回到側(cè)視窗，復(fù)制一些曲線如 (pic 24) ，并且調(diào)整每條曲線的 cv 點(diǎn)，得到 (pic 25) 的效果為止 .

pic 24

pic 25

now hide profile curves andselectall the curves one by one sequentially (from top to bottomorreverse) then surface loft . you will have this new lofted object (pic 26). next, from side view create a cutter curve reference (pic 27).

隱藏參考線，再依次選擇這些曲線，并使用 surface loft 命令 . 得到新物體如 (pic 26). 回到側(cè)視窗中去，創(chuàng)建一條如 (pic 27) 所示的剪切曲線 .

pic 26

pic 27

with cutter curve still selected and still from side view, shiftselectmain object, then edit nurbs project curve on surface . you will have this cutter spline area (pic 28); next,selectmain object edit nurbs trim andselectthese 2 frontobjects (pic 29).

在剪切曲線仍然被選擇時(shí)，按住 shift 鍵選擇主物體 , 在側(cè)視窗中使用 edit nurbs project curveon surface . 你將在曲面上得到剪切曲線 (pic 28); 選擇你要保留的區(qū)域，并 edit nurbs trim (pic 29).

pic 28

pic 29

nowselectmain object, shiftselectextruded objectthen apply a circular fillet and trim it (pic 38), remember : before circular filletting a surface, open circular fillet option and make sureto turn on create curve on surface , if you're not do this then you cannot trim the surface.

現(xiàn)在選擇主物體，按 shift 鍵選擇 extrude 的曲面，使用 circular fillet 和 trim 命令 (pic 38). 記住 : 在 circular fillet 一個(gè)曲面之前，打開 circular fillet 的選項(xiàng)盒并將 create curve on surface 打開，否則你將不能剪切你的曲面 .

next..select outter curve, shiftselectinner curve then surface bevel plus , remember : before bevel plus, make sure to check your bevel plus option box, make sure output options to nurbs .
ok now bevel plus it (width 0.2, depth 0.2, extrude depth 0.3, outterstylecurve concave in, innerstylecurve convex out) (pic 39)

接下來(lái)選擇外沿的曲線，按 shift 鍵選擇里面的曲線，使用 surfacebevel plus 命令，記住 : 在 bevel plus 前，你應(yīng)當(dāng)打開 bevel plus 的選項(xiàng)盒并確保你所輸出的幾何體為 nurbs.
ok.bevel plus 的數(shù)值為 width 0.2, depth 0.2, extrude depth 0.3, outterstylecurve concave in, innerstylecurve convex out.(pic 39) 為我們 bevel 出來(lái)的物品 .

pic 38

pic 39

and of course, drag it to the center of seat belt hole (pic 40 and pic 41)

當(dāng)然，我們需要將它移動(dòng)到椅子的中心位置 (pic 40, pic 41)

pic 40

pic 41

now mix them all together (pic 42), and dont forget to import the seat rotater gear from "rotater_gear.mb", and put the gear rotater to the back- bottom side of the seat.

for more seat detail, you could add a small rope at every top of nurbs surfaces (pic 43),oryou could also create a pair of seat belt.

現(xiàn)在將所有物體組合在一起 (pic 42), 不要忘記將 "rotater_gear.mb" 文件導(dǎo)入，并將齒輪放到椅子兩邊 .
你可以給椅子添加更多的細(xì)節(jié)，如做一些小的 nurbs 曲面來(lái)做椅子的繩子 (pic 43), 又或者你可以增加一條安全帶 .

pic 42

pic 43

final shaded render

it is very easy to create a sport car seat within maya right ? :)

ok....now all you have to do is texturing...
texturing tips : you could use 512x512 pixel of carpet texture with repeat uv arround 12 x12 :)

ok this is it, i hope you like it :)

創(chuàng)建汽車的椅子是不是很容易 ? :)

好的 .... 接下來(lái)你要做的是做貼圖給它 ....
建議 : 使用 512x512 的貼圖文件， uv 分陪為 12x12

以上就是maya nurbs 汽車坐椅建模英文教程，希望大家喜歡！

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