Latest Contributions by ThomasFuchs

This article was made with CityEngine 2022.1 and Twinmotion 2022.2. Prepare your CE Terrain for Twinmotion Before you start exporting the terrain layer, some preparations are needed. Export all Models and Shapes to Unreal Datasmith Export your scene geometry using the Datasmith Exporter ThomasFuchs_0-1671536898140.png IMPORTANT: Enable the Twinmotin compatibility mode.  In the Geometry Settings section press Center. Note down the offset values. This will help you to align the terrain in the Twinmotion scene later. Please consult the Export DATASMITH (Unreal and Twinmotion)—ArcGIS CityEngine Resources | Documentation for more details. Setting the optimal Terrain resolution Select the Terrain and open the Inspector. Increase the elevation resolution until the grid is approximately 1- by -1 meter. Additionally, write down the amplitude of the terrain (Maximum Height - Minimum Height value), since it is later needed for the import in Twinmotion. ThomasFuchs_0-1670601536199.png Water areas Does your scene contain an ocean, lake, or slow-flowing river? Then use Twinmotion for realistic water visualization. Most likely your terrain data represents the surface of the water body. For the visualization in Twinmotion, water bodies need some depth to look good. Use the CityEngine terrain edit brush to increase the depth of the terrain in the water areas.  ThomasFuchs_0-1670600572372.png Export your CE Terrain There are two methods to transfer terrain data from CityEngine to Twinmotion. You can either choose to export a heightmap image or terrain mesh. Export as Heightmap image Select the terrain in the Scene Editor and go to Menu > Export... > Export Selected Terrains as Image. Then choose the png (16 Bit Grey) format.  ThomasFuchs_4-1670602449748.png Export as Mesh Select the terrain in the Scene Editor and go to Menu > Export Models... and select Autodesk FBX. ThomasFuchs_2-1671537304069.png Go to Geometry Settings and use the same offset values (the values you wrote down earlier) as you did for the Datasmith export (alternatively, click Center). This helps to align the terrain in your Twinmotion scene after import. Prepare your Twinmotion Scene First, make sure your Twinmotion scene is set to meters: ThomasFuchs_7-1670602764886.png Datasmith Import Open the Twinmotion geometry import dialog to import your scene geometry stored int the Datasmith exchange format. ThomasFuchs_0-1671539854984.png Keep all default options Import your Terrain in Twinmotion In Twinmotion, terrains are called Landscapes. Open the import dialog and select the Landscape tab. On import, landscapes get materials assigned automatically.  ThomasFuchs_2-1670601951780.png You have three different options to add the terrain: 1: Landscape from a Heightmap image ThomasFuchs_5-1670602501942.png Set the Largest dimension to the largest dimension of the image file. Remember: the elevation resolution was set to 1-by-1 meters prior to export in CityEngine. The amplitude is the Maximum Height - Minimum Height value in the CityEngine Inspector (The same amplitude values you wrote down earlier). Optionally enable Smoothing. 2: Landscape from Mesh ThomasFuchs_6-1670602630304.png The up-axis and the distance unit are defined by the CE exporter. Keep both options set to Auto. Optionally enable Smoothing. 3: Import Terrain Mesh as Geometry The third option is to import the terrain mesh as geometry. This allows you to keep the texture (e.g., satellite image) of your CityEngine terrain. ThomasFuchs_0-1671466705812.png Keep the default settings Add Water to the Landscape Optionally, enable Water in the Twinmotion scene.  Settings > Weather > Effects > Ocean Enable Adjust the height In Aspect select the water type ThomasFuchs_8-1670603321680.png Move all elements into place Use the rotate/translate tool for aligning your building geometry to the terrain. ThomasFuchs_9-1670603517158.png ____________________________________________________________________________ Get a  Free 21-Day Trial of ArcGIS CityEngine | Sign Up Today (esri.com) and try Twinmotion for free for as long as you need for non-commercial use, or upgrade to the full-featured version for yourself or your company. ... View more

Recently, there have been changes to the Esri raster base map servers. Unfortunately, the way CityEngine 2022.0 and earlier executes queries in Get Map Data is not fully supported anymore. From now on, requests from CityEngine 2022.0 and earlier must be limited to Medium (2k) resolution. ThomasFuchs_0-1670590689763.png To download base maps with up to 8k resolution, please update to the most recent version of CityEngine (2022.1 or newer). ... View more