Nurbs高建模.docVIP

Maya Nurbs 车轮建模 Open your Maya, expand front view, then create a wheel pattern with shapes/curves like in the following image (pic 0). For this tutorial I use working units (cm) with object size around 3.927 (pic 1), this measurement affects every xyz axis number in this tutorial, but you could choose your own measurement, e.g. 3.9 or 4. 打开你的 Maya, 切换到 Front 视图，创建圆滑的曲线 ( 如 pic 0 所示 ). 在这个教程里我使用厘米作为单位，车轮的直径为 3.927( 如 pic 1), 这个尺寸在 xyz 轴上都是有效的，你可以自己选择你喜欢的尺寸，如 3.9 或 4.  Now select second circle shapes (pic 1a), then surface planar. And then edit nurbs rebuild surfaces, open option box and enter 8x8 for uv spans (pic 2) , this rebuild surface step is important cause we need a high-resolution nurbs for this main front object.现在选择第二条圆环曲线 (pic 1a), 使用 surface planar 命令 . 然后使用 edit nurbsrebuild 命令重???曲面，改变曲面 UV 度为 8x8(pic 2), 这一点非常重要，因为我们需要一个非常精确的曲面。  From front view select these outer cvs (pic 3) then drag to -z axis (pic 4), -z value its about -0.235. You could expand your cv information on the right panel to see the value.在 Front 视图里选择 CV 点 (pic 3) 将其在 -z 轴方向拉伸 (pic 4), 数值约为 -0.235. 你可以在 Channel box 里看到这一数值。  Select these 9 center cvs (pic 5) and drag also to -0.235 -z axis (pic 6). 选择 9 个 CV 点 (pic 5) 将其在 -z 轴上拉 -0.235 的距离 (pic 6).  Select these oval shapes (pic 7) and drag to about -0.46 of -z axis (pic 8). 选择那些卵形的曲线 (pic 7) ，并在 -z 轴上移动 -0.46(pic 8).  Now you have front oval shapes (bigger) and oval back shapes (smaller) right? OK now select every set of oval shapes like in pic 9 and loft them (every set of them), then it would look like this pic (pic 10). 先选择大的卵形曲线，按住 Shift 键选择小形卵形曲线 (pic 9) ，一组一组的 Loft 它们，然后就可得到如下图的结果 (pic 10).  Now select the other shapes (triangle and small shapes in the center) (pic 11) and then extrude them to -0.5 of -z axis (pic 12). remember : to extrude a curve as nurbs, open your extrude option box and set the style to distance, and make sure output geometry has been set to nurbs 现在选择其它曲线 ( 三角形和中心那些小圆 )(pic 11),