OK, 现在你有两个物体对吗 ?(pic 20), 接下来要做的是，使用相同的方法 ( 复制 ) 来创建中间的一些曲线 (pic 21). 记住最开始和最后的曲线要缩到最小 .
注意 : 如果你想闭合整个曲面，你可以使用 surface > planar 命令来闭合开始和最后的曲线 .

pic 20



pic 21

Create Top Seat Upholstery

Note : to continue your work and to get more modeling concentration, you could use working by layer or hide your finished model. :)

注意 : 继续你的工作前，你可以使用 Layer 来隐藏你已完成的物体 .

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 . :)

侧视窗 , 创建一条参考曲线如 (pic 22), 然后切换到顶视窗 , 创建一条 NURBS 圆形曲线 (sections 18) 然后调整它的 CV 点到像 (pic 23) 所示 . 记住 .... 尽量使每个 CV 点之间的距离一样， 因为这会影响到最后 loft 出来物体的效果 .

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 curve or circle curve (pic 25).

回到侧视窗，复制一些曲线如 (pic 24) ，并且调整每条曲线的 CV 点，得到 (pic 25) 的效果为止 .

pic 24


pic 25

Now hide profile curves and select all the curves one by one sequentially (from top to bottom or reverse) then surface > loft . You will have this new lofted object (pic 26). Next, from side view create a cutter curve reference (pic 27).

隐藏参考线，再依次选择这些曲线，并使用 surface > loft 命令 . 得到新物体如 (pic 26). 回到侧视窗中去，创建一条如 (pic 27) 所示的剪切曲线 .

pic 26


pic 27

With cutter curve still selected and still from side view, shift select main object, then Edit NURBS > Project Curve on Surface . You will have this cutter spline area (pic 28); next, select main object Edit NURBS > Trim and select these 2 front objects (pic 29).

在剪切曲线仍然被选择时，按住 Shift 键选择主物体 , 在侧视窗中使用 Edit NURBS > Project Curve on Surface . 你将在曲面上得到剪切曲线 (pic 28); 选择你要保留的区域，并 Edit NURBS > Trim (pic 29).

pic 28


pic 29