World Editor: Forest Generator – Arma Reforger

A Forest Generator is a generator creating entities in an area defined by a Shape.

Forest generators can be found in the Resource Browser in ArmaReforger > Prefabs > WEGenerators > Forest and are prefixed with FG_ for Forest Generator.

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• While a forest generator focuses on forests, it can actually generate any kind of entity defined in its Forest setting (can e.g be used for rocks on seabed, etc)
• There can be multiple Forest Generators per defined area.

Requirements

• A Shape (polyline, spline) defining an area (see Vector Tool)
  • Said area can be defined by either a polyline or a spline, but the spline will be considered a polyline (and not consider its curves, only its points)
  • All shapes are considered "closed"
  • At least three points are required
• A forest generator entity as a direct child to this shape.

Options

Obstacles

Avoid Objects

Avoid objects - the trace check is a 10cm cylinder (for trees mostly)

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This setting is performance hungry for it does a trace for every tree to be created. For the best performances, uncheck it whenever possible.

Avoid Roads

Avoid roads, respecting their clearance setting

Avoid Rivers

Avoid rivers, respecting their clearance setting

Avoid PowerLines

Avoid power lines, respecting their clearance setting

Avoid Tracks

Avoid tracks, respecting their clearance setting

Avoid Lakes

Avoid lakes

Regenerate By Obstacle Changes

Entirely regenerates if a shape obstacle (listed and checked above) is added/(re)moved in the area

Generation

Seed

Seed used by the random generator of this forest generator

Allow Partial Regeneration

Allow partial forest regeneration, regenerates the whole forest otherwise

Regenerate Entire Forest

Click to regenerate the entire forest

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This is a "button-like" checkbox, used to fix minor inconveniences due to partial regeneration.

Debug

Print Area

Print the area of the forest generator polygon

Print Entities Count

Print the count of entities spawned by this forest generator

Print Performance Details

Print advanced performance measurements

Draw Debug Shapes

Draw general debug shapes

Draw Debug Shapes Obstacles

Draw obstacles debug shapes

Draw Debug Shapes Rectangulation

Draw rectangulation debug shapes

Draw Debug Shapes Regeneration

Draw partial regeneration debug shapes

Entities Follow Terrain On Shape Move

Make entities follow terrain level on shape move (keeping their relative Y)

Forest

Forest's content is defined here - which entity types to spawn, what density, etc.

Levels

Forest generator levels to spawn in this forest generator polygon

Clusters

Forest generator clusters to spawn in this forest generator polygon

Global Outline Scale Curve

Curve defining general outline scaling; from inside (left, forest core) to outside (right, forest outline)

Global Outline Scale Curve Distance

Distance from shape over which the scaling occurs

Levels

Levels define three tree levels:

• Top level - tall trees
• Bottom level - trees growing below top level
• Outline level - forest's border trees

Outline Level

An outline can be one of two types:

• Small
• Medium

Clusters

Clusters are groups of entities to be created within the forest's surface, but outside of the outline area. They allow to define various generators with the following properties:

• type(s) of generated objects
  • min and max scale
  • model
  • number of models count
  • min and max models placement radius
• their density (in cluster / hectare or CDENSHA)
• enabled or not

A cluster can be of two types:

• Circle
• Strip

Options

Uncategorised

Objects

Define which tree groups should spawn in this cluster

Min CDENSHA

The minimum density of the filling in number of clusters for hectare

Max CDENSHA

The maximum density of the filling in number of clusters for hectare

Generate

Generate this cluster or not

Strip

Max X Offset

Offset that is applied to generated objects to avoid seeing the exact shape of the curve

Max Y Offset

Offset that is applied to generated objects to avoid seeing the exact shape of the curve

Frequency

Defines how many times should the curve repeats for this strip

Amplitude

Defines the maximum extent of the curve