Maya Nurbs 汽车轮胎建模

Create Tire Pattern

Open your Maya, from top view, create these curves (Fig 1), and move them to 6 of y-axis (go up). Remember...you must use closed curves. And of course... you could create another tire pattern. :)

打开 Maya, 切换到前视窗 , 创建如 (fig 1) 一样的曲线，并将它在 y 轴向上移动 6 个单位 . 记住 : 曲线必须是闭合的 . 另外，你也可以创建你自己喜欢的曲线样式 .

Then from front view, create a NURBS cylinder (radius 5, sections 12, spans 6), rotate it to 90°, name this cylinder master_ tire (Fig 2).

回到前视窗，创建一个 Nurbs 圆柱体 (radius 5,sections 12,spans 6), 旋转 90 度，将其命名为 master_tire (fig 2).

Fig 1


Fig 2

Tire Detail

From side view, select these outer CV's (Fig 3) and scale them smaller (Fig 4). Note : use center pivot axis to scale.

切换到侧视窗中，选择外沿的 CV 点 (fig 3) 将它们拉伸如 (fig 4). 注意 : 使用中心黄点来拉伸 .

Fig 3


Fig 4

Now duplicate this master_ tire and name the new one master_ copy , then hide master_ tire (select Master_tire then hit CTRL-H)

复制一条 master_tire 曲面 , 将其命名为 master_copy, 将 master_tire 隐藏起来 ( 选择 master_tire 曲面按 Ctrl+H 组合键 ).

Go to top view, rescale and adjust your curves to this position (Fig 5) (don't overlatuLaoShi.comp the "master_copy" body), and then Shift-select master_copy and edit nurbs project curve on surface .
Note : you must do this projection from top view.
Then from persp view you will have these new projection curves (Fig 6)

切换到顶视窗 , 将你的曲线重新拉伸缩放到如 (fig 5)( 不要超过 master_copy) ，然后按 Shift 键点选 master_copy ，选择 edit nurbs project curve on surface 命令将曲线投影到曲面上 .
记住 : 你必须在顶视窗中投影 .
回到透视窗你将得到一些投影的曲线 (fig 6).

Fig 5


Fig 6

With the new projection curves still selected, go to menu surfaces extrude option box , select Distance and enter -0.15 on Extrude Length , output g