I can share a picture later this afternoon but I am working on a landscape design where there’s a hill going down to the lake. On the top of the hill and partially on the hill the client wants a mulch bed that follows the hill terrain. I would like to be able to draw the curved garden bed and show her with the plants but the Fredo6 extension, Toolsonsurface is unable to make it a complete shape so mulch material does not work when trying to fill the area. Any ideas? I used the sandbox tool to create the hill terrain.
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Which of the tools on ‘Fredo Tools on Surface’ did you use and couldn’t draw what you wanted? What does that shape actually look like? What about the terrain?
Thought I would share this picture of a model I did some time ago which seems to resemble (at least to some extent) what you were talking about. The model was generated using the Skatter plugin to generate all of the bushes. Then I just projected them on to the surface which was generated with the sandbox tool.
Hope it will give you some idea of how to accomplish what you are wanting to do. Again, the way to put things on the landscape (IMO) is just put the plants in a group and then just “project” them on to the sandbox. They will automatically follow the elevation of the surface where you project them. 
So I used two, line and arc. The hill is a steeper hill at a total elevation change of 20’ but this bed is at the top so only about a 1’ difference. The bed is approximately 21 feet long, 6’ wide and the ends are rounded. When I went and drew the arcs, the terrain started to disconnect and disappear as well as I couldn’t fill in the shape once I closed in the points.
What does it mean that it disconnected and disappeared?
This description alone is not enough. You said you would at least add some images.
But you could probably simply draw that shape in plan (2D), and then use the Sandbox > Drape tool to transfer it to the 3D model.
I am out of the office for the rest of the week so had my partner hop on my computer and take a pic of wat I was messing around with last night per your latest reply.
You can see the garden shaped bed on the top and I went ahead and draped it. The one side worked well and the other as you can see did not. The “disappearing” terrain I was talking about looks likes its preventing the corner from closing.
Turn on Hidden Geometry and select the edges that ‘missing’ and change them to solid (turn off smooth and soft).
Basics of SketchUp at Campus - learn.sketchup.com
- changing the properties of the edges
Now that you’ve added some more information:
- Sandbox creates those elongated triangles, depending on the points it has joined;
- sometimes, problems like the ones visible in your video appear when you draw some edges and certain faces are duplicated (in the same space).
One of the solutions is to delete those faces and manually join the vertices and recreate the missing surfaces.
The better option is to create the surface as a grid, either using the Fredo TopoShaper extension, or manually (Sandbox + mcAlignEnds). Then, such problems should no longer appear.
Ok, I was not very clear with my previous post. I thought the area where you wanted to “show” you plants was a lot larger and was had more variations. I was going to tell you that the tools to would be the sandbox drape and possibly the stamp tool. After seeing your post today, I think I misunderstood what you wanted to accomplish.
I appreciate your help! The Fredo6 TopoShaper tool was what worked the best.
Glad to hear it worked. Again, I apologize. I misunderstood what you were wanting to do. I thought what you wanted to do was something more like the image I posted.