没做出来,
我是看一篇教程的.有一段英文看不懂的,现摘录下来,告诉我是如何操作的
if needed,set the compass to XYZ and insure the Normal to the XZ plane,
To realize,drag the second control point in X direction(or Z depending on the support plane) and move sursor
over the first on while holding the CTRL key.Release the mouse button ,when "use the point" appears. |