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Spline Architect – Terrain Tools

Description
Terrain Tools is an addon for Spline Architect.

Think of Terrain Tools as an extension of Unity’s Terrain system. It works seamlessly with all built-in terrain features while maintaining a non-destructive workflow. You have full freedom to shape mountains, carve paths, create rivers, roads, and much more, directly with splines.

Craft detailed, hand-made landscapes with unmatched control and speed. Build entire worlds not in weeks or days, but in hours, or even minutes.

📘 User manual

💬 Discord

🔧 General

Terrain Tools is multithreaded and uses Unity Burst for optimal performance.
Supports multiple terrains, including high-resolution 4K terrains.
Add up to 16 noise layers for terrain deformation, painting, and object spawning.

🏔 Terrain Deformation

Set width, blend width, easing, and erosion parameters for spline deformations.
Customize each control point individually with properties like saddle skew, contrast, rotation, noise strength, and center smoothing.
Use up to 8 range fields to deform specific segments of the spline.
Carve paths on stamped terrain, fully compatible with Unity’s Terrain tools.
Non-destructive editing lets you make changes without permanently altering terrain.
Includes a unique erosion system unlike anything you’ve seen before.

🎨 Terrain Painting

Paint terrain with up to 16 layers per spline.
Control width, blend width, easings, noise, slope filtering, slope blending, and range for each paint layer.
Adjust painting on a per-control-point basis using width, offset, and blend modifiers.
Works alongside Unity’s terrain painting system.
All painting data is stored directly in the spline.

🌲 Object Spawning

Spawn any prefab or existing scene object along splines.
Supports up to 16 instancing layers.
Control spacing, probability, distance from splines, slope, random rotation, scale, and more.
Customize spawn behavior per control point like, scale, height and probabilty.

Check out the details and buy a license from the Unity Asset Store: https://assetstore.unity.com/packages/tools/terrain/spline-architect-terrain-tools-324377

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