theinonen wrote:
These vector images must have been made in some 3d-modelling software, as they could have been drawn much simpler in a 2d app and as such are not very suitable for editing.
For example if you look the picture below, you see that top of that Tezro case is made of 9 different shapes, when that same could have been achieved with only 3 shapes. And if you look at the bottom menu you see something like 8652 objects in the foreground. I believe it would take a superhuman effort to group all of those and put them to layers.
One method would be to put everything into a magnetic layer, and then use snaps to draw a simpler image on top of the old one.
I took a stab at the same image yesterday. I had no problem using Inkscape to separating the purple plastics into a layer of itself. Notice that all holes in the metal is a few shapes that need to be selected and moved.. those will take some time. Another approach that I might try is to edit the SVG as a textfile and group things by Z-order. It will take some trial and error but should be quicker.
I would do more, but I'm not sure what software should be used to view the result in a nice click-to-show-layer-x fashion.