Actually this is part one of a series of small tutorials showing how to
create a realistic knotted net in 3D. In this tutorial we will create
the first knot.
(You can also get all files of this tutorial for free - scroll down to the end of the article to find out how)
Things You Will Need
- 3ds max or any other 3d software which supports splines and extruding a shape along a spline
- some experience with your 3D software
Now select all vertexes, right-click in the viewport and choose "Smooth" to smooth out the edges.
If you still have problems with this step grab a piece of rope or a cord and tie the knot for real.
Here we'll create one more "piece of rope" running through the knot. This will enable us to create a whole net in the next phase of this tutorial.
OK, select the spline and on the Modify-panel go to the Geometry rollout, there click on the Create Line button. In the Top view create a straight line perpendicular to the original one. It should be made of three vertexes (both ends and the one in the middle right where the knot is). You'll probably have to move the new line around a bit to get it inside the knot as shown in the image. Also select the newly created vertexes, right-click and choose "Smooth".
It can be hard to select the vertexes. Switching to wireframe mode (F3) or X-ray mode (alt+X) helps a lot here.
Now adjust the four endpoints. They should be roughly at the same distance from the knot. No need for super precision, just use the grid as a guide. Also bring all four in one plane(in other words at the same height. The easiest way to do so is to select all four and then in the Perspective view scale only on the Z-axes.
Got to part two where we'll start creating a net based on the knot created in this tutorial: