303-0000.jpg

Getting Started with VNS 3: Terrain Basics
Part 3D. Generating Terrain

1. VNS doesn't limit you to imported data for terrain. You can also create terrain with the Terrain Generator. Create a new project and name it TG.

303d-0010.jpg

2. When asked if you want to import data, answer No, as we'll be creating our own.

303d-0020.jpg

3. Go to the Data menu and open the Terrain Generator.

303d-0030.jpg . . . 303d-0031.jpg

4. Open a view for TG Camera and zoom back a notch with the - (minus) key.

303d-0040.jpg

5. We have terrain visible in the camera view, but we don't have any DEM objects in the Database Editor. This is a preview of the default Terrain Generator texture, size, and elevation range. It doesn't become a DEM object until we create a DEM.

6. Select Elevation Range Texture Operations TextureOperations.gifand Edit Texture.

303d-0060.jpg

7. Drag the Texture Editor out of the way so we can see the camera view. The default element is a Hybrid Multifractal texture.

303d-0070.jpg

8. Go to the Selected Element dropdown list and choose Turbulence.

303d-0080.jpg

9. The camera view refreshes with the new texture element.

303d-0090.jpg

10. Try Pebbles next. In addition to creating artificial terrain, the Terrain Generator Texture Editor is a great place to experiment with different textures and see how they work in 3 dimensions.

303d-0100.jpg

11. Close out the Texture Editor and go to the Terrain Generator Coverage page. The default terrain size is about 28 kilometers on a side and the elevation ranges from 0 to 5000 meters.

303d-0110.jpg

12. To choose another area preset, use the Area Presets dropdown list and select Square Kilometer.

303d-0120.jpg

13. The elevation range and cell size will scale accordingly.

303d-0130.jpg

14. The camera view changes as the nearly 800 square-kilometer terrain is reduced to a single square kilometer. That's the DEM off in the distance.

303d-0140.jpg

15. Reset the TG Camera to its default position.

303d-0150.jpg

16. You can also set your own values for DEM dimensions, bounds, cell size, and elevation range. As with all VNS Components, you can load a prebuilt Terrain Generator. Select Load Component LoadComponent.giffrom the titlebar to open the Component Gallery.

303d-0160.jpg

17. Load the Groovy Component.

303d-0170.jpg

18. You don't see any terrain because the Component has the preview disabled. Go to the General page and check the Preview Enabled box.

303d-0180.jpg

19. Create DEM, save your project, and close out the Terrain Generator.

303d-0190.jpg

navprev.gif . . . navnext.gif

Warning: file_put_contents(/extra/home/webdude/3dnature.com/files/cache/pages/0/c/e/0ce0ecb13d671f236cbd217748e62404f73e8514f7eaffdf20f1469db594a266.cache): failed to open stream: No such file or directory in /extra/home/webdude/3dnature.com/updates/concrete5.6.3.4/concrete/core/libraries/page_cache/types/file.php on line 62