MTree - Open Source

MTree is a powerful tree creation tool for the Unity Engine. It allows you to create procedural trees directly within the Unity Editor, complete with wind animation, LODs, and mesh merging.

Originally a paid asset, the original developer (MaximeHerpin) has allowed this tool to be released as Open Source under the MIT License.

Features

• Procedural Generation: Create unique trees using inspector-based workflows.
• Mesh Export: Export your generated trees to standard Mesh format to use in your projects without needing MTree scripts at runtime (except for wind).
• MeshLOD: Support for MeshLOD and GPU Resident Drawer.
• Wind System: Includes MTreeWind.cs for vertex-displacement wind animations.
• LOD Support: Automatically generates Levels of Detail with dithered corss-fade.
• Full Source Code: Modify and extend the tool as needed.

Compatibility

• Unity Versions: Compatible with most Unity versions including Unity 6.
• Render Pipelines: Works with all Built-in, URP, and HDRP pipelines.
  • Note: The materials rely on Shader Graph. You must have the Shader Graph package installed.
  • The provided Shader Graphs are compatible across pipelines, but ensure your project is set up to handle Shader Graph materials.

Installation

Option 1: Install via Package Manager (Git URL)

• Open the Package Manager and select Add package from git URL from the add menu.
• Enter https://github.com/Warwlock/MTree.git to install this package.
• If Unity could not find git, consider installing it here.

Option 2: Install via UPM

• Go to Edit --> Project Settings --> Package Manager
• Under Scoped Registries create a new one.
• Enter this:
  • Name: Warwlock
  • URL: https://registry.npmjs.com
  • Scope(s): com.warwlock
• Go to Window --> Package Manager and under My Registries, install MTree package.

Option 3: Manual Install

• Download the source code as a ZIP file.
• Extract the folder into your Unity project's Packages folder (e.g., Packages/MTree).
• If you want to add it to Assets folder, rename Samples~ folder to Samples to include tree templates.

Include Tree Templates

• Go to Package Manager and select MTree package.
• Under the Samples tab, import Example Templates.

Documentation

https://github.com/Warwlock/MTree/blob/main/Documentation~/Documentation.md

Contributing

Contributions are welcome! Since this is now an open-source project, feel free to submit Pull Requests to fix bugs, clean up the Shader Graphs, or improve the overall tree generation system.

License & Origin

This project is a community-maintained version of MTree.

• Original Creator: MaximeHerpin
• License: MIT License
• Source of Permission: https://discussions.unity.com/t/mtree-tree-creation/713264/875

Note: The original developer stated: "Whoever reads this and has a version of MTree has my permission to publish it with a MIT (or equivalent) license."

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Big thanks to mherpin for creating this tool and giving it to the community!