====== Heightfield:Subtract filter ======


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

^  Description | This filter is used to decrease the height of a heightmap by a uniform value. |
^  Author | [[user>Aaron]] |
^  Plugin | [[bundywiki>plugins:calc:ZG_CalcHF|ZG_CalcHF]] ^

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

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

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

^ Name ^ Type ^ Default value ^ Description ^
|  //hMap//  |  hvar  |  N/A  | A handle to a map that is to be modified. |
|  //Value//  |  float  |  0  | The height value, in metres, to be subtracted from //hMap//. |

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

^ Name ^ Type ^ Description ^
|  //hMap//  |  hvar  | A handle to the map (handle is passed through from input to output). |

===== Options =====

This filter has no options.

===== Comments =====

None.