0. UI Elements
- The editor's UI is divided into four panels that are toggled by clicking their label buttons:
- Create: Settings for creating new vector fields.
- Edit: Methods to calculcate and store velocities on an existing vector field.
- Display: Show velocities as 3D lines.
- Tools: Currently only contains the Curve Path tool.
Update Data
- Use when selecting a different vector field in the same scene to sync up the editor's variables to the object's.
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Resolution
- The number of velocities stored in the vector field (by axis)
Scale
- Size multiplier
- Distance between particles in the vector field
No Gravity
- Disable gravity's influence on the particles in the volume on creation.
- To do this after the volume has been created, change the gravity Field Weight in the object's Particle Properties to 0.0
Generate
- Create a new vector field object from the provided values
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Velocity Type
- Method used to obtain velocities from the volume's particle system
- Velocity Type Descriptions
Blend Method
- Method used to blend the current velocities with the stored values
- Blend Method Descriptions
Selected Only
- Only store/blend velocities for selected points
Invert Next
- Invert the current velocities in the calculation
Calculate
- Calculate and save current velocities using above methods
Normalize
- Normalize stored velocities
Invert All
- Invert stored velocities
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Show
- Show the volume's currently stored velocities as 3D lines
Update Offsets
- Update the displayed lines' starting points with the volume's location offset
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Curve Path
Adds wind forces along a line to make influenced particles flow along it
- Create and select a curve to enable this tool's options
Strength
- The amount of force applied by the wind force fields
Max Distance
- The maximum distance from the line in which particles can be influenced by it
Falloff Power
- Controls the distance at which the forces' influence fades out in
Trail
- Decreases the strength and influence of the wind forces from point to point along the line
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Found in the standard Import/Export menus, labeled as UE4 Vector Field (.fga)
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Export Scale
- Multiplier for the size of the exported volume
- Actual scale on export = (Export Scale) * (Resolution) * 0.5 cm
Scale Velocity
- Apply Export Scale to velocities
Export Offset
- Apply the volume's location offset to the exported file's bounds
Manual Bounds
- Allow setting the min/max bounds that will be exported directly
- This will remove the first three options and replace them with the following:
Minimum / Maximum Bounds
- Values for the exported vector field's bounding volume
Velocity Scale
- Multiplier for the exported velocities
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Import Scale
- Multiplier for the size of the imported volume
Scale Velocity
- Apply Import Scale to the imported volume
Import Offset
- Add location offset from the file to the imported volume
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