Although this may not be applicable to develop 3d elements on curves, but some suggested videos and articles for projecting textures and images onto curved surfaces include:
When you 'paint' a texture in SketchUp, what it does is tile the texture repeatedly. However, when this happens with a curved surface, the result can really look odd. This article will show you how to overcome this problem. Open up the...
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Est. reading time: 1 minute
http://help.sketchup.com/en/article/3000114
and conversely to project a curve onto a flat surface:
Using Sketchup Make 2015
How do you project a curved surface onto a flat plane? I essentially want to create an elevation of the front of a train so I can draw the windows that will be draped back onto it but I first need a flat interpretation of the front curved surface.
If you are looking to place 3d objects on curves, you may want to explore the follow me tool or the Profile Builder 2 plugin .
(Always enjoyed the “What me worry? guy, Alfred E. Newman” btw.)