Introduction - If you have any usage issues, please Google them yourself
BezierSpline 1.21. sketch up (draft design of the master, Google products software) plug-ins under the Bezier curves, when used to extract the sketch up copy of the directory to install plug-ins on the list, I have not used the time being, let us find from the network information to learn it, but it can achieve a high degree of functionality is different outside the edge of the curve into a smooth connection surface intricate, and the main sketch up for 3D design, the use of different BezierSpline 1.21 can generate topographic contour lines of the 3-D digital map !