This document discusses new features in Unity 2019.3 for worldbuilding, including terrain holes, the ProBuilder and Polybrush packages, the new Terrain Toolbox for managing multiple terrain tiles, improved brush tools, and new erosion brushes. It provides examples and screenshots of how these tools can be used to sculpt realistic terrain and environment features.

2. Mesh Sculpting for
Realistic Terrain
Features
or...

3. What’s New In
Worldbuilding:
Unity 2019.3 Edition
Matt Schell
Online Evangelist, Unity Technologies
@mattmirrorfish

4. Worldbuilding In Unity
— Creating content in Unity, mostly
environments and level designs
— Terrain, Probuilder and Polybrush
— Getting a lot of new, better and
more tightly integrated tools in
Unity!
4

5. Image from Manifold Garden, modeled in
ProBuilder
Worlds built in Unity
5
Image from Book of the Dead, using Unity
Terrain in HDRP

6. What’s In This 25 Minute Talk
6
1. Holes!
2. ProBuilder & Polybrush verified packages
3. Terrain toolbox released
4. New brushes with Brush Mask Filters
5. Erosion tools

7. 7
☢Eye Warning☢
Programmer art ahead, there be
dragons. Professional artists please
avert your eyes and don’t judge me.

8. 8
Terrain Holes!
“There’s holes in them thar hills!!!”
- Works seamlessly with other
Unity systems like physics,
navmesh or lightmapping.
- Programmers can also access
terrain-hole data through scripting
and implement custom terrain
logic.
- Still heightmap based, just with
holes. Not for tunnels, overhangs,
or cave systems on it’s own.

9. Use Paint > Paint Holes to create holes in the
terrain mesh, similar to painting elevation
Terrain Holes In Practice
9
Bridge the gap with a mesh feature that leads
down below the terrain. I made some stairs
and a tube in ProBuilder.

10. In-game GIF example
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11. Create raw geometry with ProBuilder, making
sure there are enough vertices to modify
Irregular Shapes With Polybrush
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Use Polybrush to move vertices and deform
the basic mesh

12. Create in ProBuilder, edit in Polybrush
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13. Smoothing jagged edges and extending
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14. 14
Terrain Toolbox
— Automate terrain creation &
management with a new
centralized interface
— Create multiple terrain tiles
simultaneously
— Import height maps

15. 15
Terrain Toolbox
— Automate terrain creation &
management with a new
centralized interface
— Create multiple terrain tiles
simultaneously
— Import height maps

16. 16
Brush UX
Improvements
— Per-brush common settings
— Jitter, Scatter, & Spacing
— Randomization allows for more
organic looking output

17. 17
Scene View Hotkeys
— A: Controls Brush strength
(opacity).
— S: Controls Brush size.
— D: Controls Brush rotation.
— Control: Inverts the Brush
effect for most, modifier for
others.
— Shift: enables the smoothing
Brush.
— Shift + A Enables the Terrain
Layer Eyedropper tool.

18. 18
Brush Mask Filters
— Added in 2019.2
— Add additional operations to
the Brush before computing the
output
— Math filters operate on the
heightmap data
— Add shown, adds 5 to the pixels
being written

19. 19
Terrain Brush Mask Filters
— Types
– Height
– Aspect
– Concavity
– Slope
— Applied in top to bottom order

20. New Brush Types
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— Clone
— Height Stamp / Mesh Stamp
— Bridge
— Pinch, Bulge, Twist, Smudge
— Procedural Noise
— Terrace
— Slope Flatten, Sharpen Peaks,
Contrast

21. Physical Erosion Brushes
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Thermal Erosion Brush Hydraulic Erosion Brush Wind Erosion Brush

22. 22
Thank you!
Matt Schell
Online Evangelist – Unity Technologies
@mattmirrorfish
Terrain Resources
GitHub: github.com/Unity-Technologies/TerrainToolSamples
Forum: forum.unity.com/forums/world-building.146

23. Organic shapes
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Worldbuilding?
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— Qasim Meher Assad, Head of Products, Mindstorm
UnrulyHeroesbyMagicDesignStudios—MadewithUnity
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37. Resources

38. Icons
Core - Material Design

45. Icons
AV - Material Design

47. Icons
Communication - Material Design

49. Icons
Device - Material Design

51. Icons
Material Design - Hardware

53. Icons
Image - Material Design

55. Icons
Maps- Material Design

56. Icons
Notification- Material Design

58. Icons
Social- Material Design