====== HF_FractalInflate filter ======

===== Filter info =====

^  Description | Increase the size of a heightfield using diamond-square fractal interpolation. |
^  Author | [[user>Aaron]] |
^  Plugin | [[bundywiki>plugins:calc:ZG_CalcHF|ZG_CalcHF]] ^

===== Looks like =====

| {{:plugins:calc:zeograph:filters:hf_fractalinflate.png|:plugins:calc:zeograph:filters:hf_fractalinflate.png}} |

===== Input pins =====

^ Name ^ Type ^ Default value ^ Description ^
|  //hInputHF//  |  hvar  |  N/A  | A handle to the heightfield to be inflated.  |
|  //hDesignMap//  |  hvar  |  N/A  | A handle to the design map.  |
|  //nLevels//  |  int  |  1  | The number of levels of inflation. Each level doubles the dimensions of the map.  |
|  //FractalWeight//  |  float  |  100  | A weighting for the strength of the fractal noise to be applied during inflation (see comment below).  |

===== Output pins =====

^ Name ^ Type ^ Description ^
|  //hOutputHF//  |  hmap  | A handle to the inflated heightfield. |

===== Options =====

This filter has no options.

===== Comments =====

==== Fractal weight ====

The fractal weighting at each point in the heightfield is controlled by the 'frac' parameter of each pixel in the design map. The //FractalWeight// parameter in this filter may be used to increase or decrease the overall fractal noise used for the inflation levels across the whole map. Typically, for late-stage inflation near the final resolution of the heightfield, the fractal weighting is decreased to 50.