00:01A common problem when working in 3D is that objects, such as building footprints...

00:05...Streets, StreetFurniture points, and Vegetation points, do not sit nicely...

00:10...on top of your Digital Elevation Model.

00:14They sit beneath the surface if you like.

00:18And a number of things can cause this.

00:20First and foremost, you do not have elevation information available for your features...

00:25...or the elevation information is incorrect...

00:28...or the resolution of your surface is simply too low.

00:32Now we've published a 2D to 3D GIS template on the 3D GIS and CityEngine resource...

00:38...centers that can help you turn your 2D features into 3D very quickly.

00:45So the template has four GP tools, and let's have a look at the first one.

00:50Here, we're going to turn out 2D Streets into 3D by running them through...

00:53...the Simplify Line and Interpolate Shape GP tools.

00:59And once we're done, you can see we have beautiful 3D centerlines 3D street centerlines.

01:05And if I compare them with the 2D ones, you can see that now we send them into 3D...

01:13...and we want to do the same for our StreetFurniture and our Vegetation.

01:20So let's do it for the street furniture.

01:22Again, we're using Interpolate Shape to turn them into 3D...

01:25...and using the terrain as the source for our elevation information.

01:30And our ready round is for the vegetation.

01:33And we're done.

01:37We're not completely done because the most important ones to building footprints...

01:41...they are slightly more complicated.

01:44Because we need to find an average point within the extent of each building footprint...

01:48...to derive the elevation information, and then join that information back with the original...

01:54...building footprints and turn them into 3D using the Feature to 3D By Attribute GP tool.

02:00And simultaneously, you were also generating a buffered line around the building footprint...

02:06...that is going to help us really build the features nicely into the terrain later on.

02:13So there you go!

02:14This is the first lot that we did.

02:17And I've already done the second lot, so I can turn them on as well.

02:24But you can see that the 3D building footprints do not nicely sit...

02:29...on the terrain because we used an averaged value within the extent of the building footprint.

02:34So then we're going to use the final GP tool...

02:38...to burn them into the terrain, and what we're doing here is we're taking...

02:45...the building footprint and we're going to hard replace in the area of the footprint.

02:49We're going to change the terrain and we're going to use the...

02:52...3D buffered line around the building footprint to generate a nice bank...

02:57...around the original building footprint.

03:00So let's run it.

03:04So we're using the Edit TIN GP tool.

03:07And then we're going to turn the TIN into a raster.

03:09And we're going to have a look at the final, end result.

03:20So we're going to turn off the 2D feature classes and the original terrain...

03:30...and turn the new terrain show it in 3D...

03:34...using the correct base height and there you have it.

03:37You can see now that these building footprints sit perfectly on the terrain.

03:41And we actually burned them into the terrain with a nice bank.

03:47The fact that you can see flickering here now is actually really good.

03:50It means we have coplanar polygons in the base of these...

03:53...building footprints that sit perfectly onto the terrain.

03:58And finally, what we can do is we can extrude our buildings...

04:02...with an attribute value to have 3D buildings.

04:09So we're doing it for this...

04:11...feature class and we can do it for the other one as well.

04:17And what we can do then with the resulting database is we can load it into our...

04:23...CityEngine Philadelphia example.

04:26And keep on modeling in 3D and designing in 3D.

04:31So there you have it!

04:322D to 3D features using the new template published on the GIS...

04:37...3D GIS and CityEngine Resource Center.

04:40Thank you.