This node changes the size and resolution of a terrain.

To add a Change size node, right-click in the Graph Editor and
select **Create Node > Terrain Transformation
> Change size**.

Double click on the node to open its parameters:

The **Current size** in the parameters dialog
displays the current Terrain **Width** and
**Height** in meters and the **Quad**
**size** of a grid quad.

- Use the
**New size**fields to change the**Width**and**Height**in meters and the**Quad****size**of the Terrain. - Toggle between
**Absolute values**(meters) and**Relative values**(%). - Check the
**Keep aspect ratio**box to preserve the proportions of the Terrain when you change one value. **Scale heights proportionally**: The scale factor applied to the width and the height is also applied to the heights of the vertices so that the terrain keeps with the same look. This means for example that the slopes angle is not altered.

The scale factor is applied to the heights of the vertices following these rules:- If both dimensions are increased, the smallest one is applied to the scaling factors.
- If both dimensions are decreased, the largest one is applied to the scaling factors.
- Otherwise, the heights cannot be changed (scale factor = 1).

**Leave heights unchanged**: The heights of the vertices are preserved.

Link the Smooth node to an input node.

The size of the terrain is divided by 2 and the **Scale
heights accordingly** parameter is selected. The output
terrain is a smaller version of the original terrain.

For example:

In this example, the size of the terrain is divided by 2 and the
**Leave heights unchanged** parameter is selected. The
output terrain is smaller but the mountains have still the same
heights; now they are sharper.

Parameter | Use |
---|---|

Width | New width (in meters) or the scale factor (as a percentage) to be applied to the width |

Height | New height (in meters) or the scale factor (as a percentage) to be applied to the height |

Quad size | New size (in meters) of a grid quad |

Absolute values | Defines the values of the new dimensions of the Terrain in meters |

Relative values | Sets the scale factor to be applied to the dimensions of the Terrain as a percentage |

Keep aspect ratio | If selected, the width to height ratio is constrained |

Scale heights proportionally | The scale factor applied to the width and the height is also applied to the heights of the vertices so that the terrain remains with the same look. |

Leave heights unchanged | The heights of the vertices are preserved |

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