| Description | Generate a heightfield using Perlin noise. |
| Author | Aaron |
| Plugin | ZG_perlin |
This filter has no input pins.
| Name | Type | Description |
| hMap | hvar | A handle to the perlin heightmap created by the filter. |
The filter options window for the Perlin filter looks like:
The options are as follows:
| Option name | Data type | Description |
| Width | int | The desired width of the map (east-west), in pixels. |
| Height | int | The desired height of the map (south-north), in pixels. |
| HorizScale | float | The desired horizontal spacing between map pixels, in metres. |
| FeatureScale | float | The pixel size of the largest noise octave relative to the output map width/height. Low values give bumpy terrain, and large values give 'continental' terrain. A value of ~0.5 is typical. |
| nOctaves | int | The number of noise octaves applied to the map. A low value gives smooth terrain, a large value gives rough terrain (but is slower to generate). |
| Persistence | float | The noise octave amplitude propagation coefficient. A value of ~0.5 is typical. Larger values give rougher terrain. |
| NoiseKey | int | A number used to seed the pseudorandom number generator used by the Perlin generator. |
To edit any of the values, double left-click the mouse on them.
To make mosaic perlin maps, first create the heightfield using Map:CreateMosaic, then pass the map to Heightfield:Generator:Perlin2. The Perlin2 filter behaves in much the same way as this filter, except that its settings are exposed as input pins rather than options.
