Hi, I would like to create a 3d cityscape over a google earth terrain. I have tried everything and I'm stuck.
Right firstly I downloaded a OS map of a city (Lincoln UK)
The file was .gml which was converted to Autocad using a digimap application called interp0se
I have cleaned up the map and imported the AutoCAD lines into sketchup.
I got the 3d terrain within sketchup with geolocation and enabled terrain view to make it 3d.
Now I have the problem.
How can I get the whole site and surrounding context onto my terrain.
Well I tried projecting it on with some ruby scripts but the results wern't that good, a lot of lines were missed out and was a bit useless. (I dont know why)
I then had the idea to make the faces between the lines and then extrude the whole lot through the terrain and intersect. - I have done this before but the model was Much smaller and it worked fine. I would then delete unwanted geometry and build up layers of buildings by pulling and pushing to different levels. not the projected terrain faces as they cant be pulled but I would overlay another extrution of just buildings. But I ran into a problem and this is why im here. I also tried draping the lines over via the sandbox drape tool.
Basically the i cant do this because some faces "bleed" into other face - merging them together. so I have lots of faces I can freely push and pull but some lines arent intersecting with the face there on?!
I tried intersecting with the selected but it didnt do anything and tried projecting it again but nothing changes. I dont get why they arent interacting with each other. I attached some images. I even tried tracing over but it doesnt change anything, im not going to trace over the whole lot though.
I used make faces plug in as well but the results are the same as if I intersect the lines with a face below it.
Basically this will make an amazing 3d model for me to model my architectural project in and also use for analysis of the site, i.e realistic sunlight analysis etc...
2 attachments
1 - hovering above terrain waiting to be built up
2 - representation of what happens when I click on one face