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What is Instant Meshes?

Instant Meshes is a free open source program for automatic retopologising of 3D models. This means that it helps to simplify a complex 3D model and restructure the mesh network to make it easier to edit or use in real-time applications like games.

Step-by-step guide for using Instant Meshes

1. Preparation

• Required files: A 3D model in OBJ format. If your model is in a different format, you can convert it to the OBJ format with a program like Blender.

Two. Download Instant Meshes

• Visit website: Go to the GitHub page of Instant Meshes: Instant Meshes on GitHub.
• Download: Scroll down to the “Downloads” section in the Readme file.
• Select operating system: Download the appropriate version for your operating system (Windows, macOS or Linux).
• Unpack: Unpack the downloaded ZIP file into a folder of your choice.

3. Installation

• No installation required: Instant Meshes is a portable program. That means you don’t have to install it. You can start it directly from the unpacked folder.

4. Start the program

• Execution: Open the unpacked folder and double-click the program file:
• Under Windows:

• Instant Meshes.exe

• Under macOS/Linux:

• Instant Meshes

• (possibly, you need to adjust the permissions to run the program)

Five. 3D model loading

• Open model: Click “File” in the program window and then click “Open Mesh…”.
• Select a file: Navigate to your 3D model in OBJ format and select it.

6. Adjust settings

• Set the number of polygons: In the right area of the program you will find the setting “Vertex Count”. Here you can set the desired number of points (Vertices) in the new mesh.
• Enable orientation lines (optional): For better results, you can use orientation lines:
• Click “Solve Orientation Field”.
• Click on “Solve Position Field”.

7. Create new mesh

• Start calculation: After adjusting the settings, click on “Extract Mesh”.
• View preview: The program will now show you a preview of the new Meshes.

8. Save optimized model

• Save: Click “File” and then click “Save Mesh…”.
• Select location: Select a folder and a file name for the optimized 3D model.
• Select format: You can save the optimized mesh in OBJ or PLY format.

9. Completion

• End program: Close Instant Meshes when you’re done.
• Further processing: You can now use the optimized 3D model in other programs, for example in Blender, Unity or Unreal Engine.

Additional tips

• Create backups: Before you process your original model, create a backup copy.
• Experiment: Try different settings for Vertex to get the best result for your needs.
• View tutorials: There are many online tutorials (e.g. on YouTube) that explain the use of Instant Meshes step by step.