TerrainFacts

Remarks

The (derived) readout convention, from [20 § B6]'s lighting panel, and it belongs here more than there. This is the dialog where a person accidentally asks for eight gigabytes: four numbers that each look reasonable multiply into a terrain nothing can load, and the multiplication is not one anybody does in their head.

⚠ MetresPerStep is here because the height range is authored. Unreal fixes the range and nobody has to think about it; [§ D2] lets the author set it, which buys a 40 m rolling landscape 0.6 mm of vertical precision instead of 8 mm — and makes it possible to ask for a 20 km range and wonder later why a flatten will not settle. The number that answers that has to be on the form.

Fields and properties (7)

• public float WidthX

  How far it reaches along X, in metres.

• public float WidthZ

  And along Z.

• public long Samples

  How many height samples it has in total.

• public long HeightBytes

  What those samples occupy.

• public long WeightBytesPerLayer

  What one paint layer adds.

• public int Tiles

  How many tiles, which is how many collision shapes.

• public float MetresPerStep

  What one step of the 16-bit height range is, in metres.

Methods (3)

• public TerrainFacts(float WidthX, float WidthZ, long Samples, long HeightBytes, long WeightBytesPerLayer, int Tiles, float MetresPerStep)

  What a new terrain costs, computed from the form as it is being filled in.

• public static TerrainFacts Of(in TerrainDescription description)

  What a description costs.

• public IReadOnlyList<(string Label, string Value)> Rows()

  The rows the panel draws, each already labelled as derived.

Used by (3)

• TerrainCreateSettingsVixen.Editor.Terrain
• TerrainModuleVixen.Editor.Terrain
• TerrainPanelTestsVixen.Editor.Terrain.Tests