One type of workflow that caters itself to a more believable scene if trying to replicate a real-world example or setting is that of importing a heightmap you have created inside a 3rd-party application. As stated prior they are a greyscale image and can be imported using the following file formats:
- 8bit BMP
- 16bit PGM
- 16bit RAW
Using simple logic we will want to have a trade-off in resolution as to give the best result possible. If you keep the resolution of the heightmap high and keep the size of the terrain low you will have the best ratio to sculpt the terrain to highest fidelity.
How to Import and Export a Heightmap
Follow the steps below to import and export a heightmap:
- Carve out an area in our terrain that will make it apparent that it has not only been saved, but also that it can be imported and be quite apparent. For this example a ravine was carved out.
- Now, export the heightmap by going to File -> Export Heightmap. The terrain has now been exported. Flatten out the terrain height to a value of 35 in the Flatten tool. The terrain is now different from the saved heightmap.
- Import the heightmap by going to File -> Import Heightmap. You should see an identical topology to what you have saved earlier.