So you've been working on a Unity project and you need to convert your selected gameobjects to OBJ format for 3D modeling and sharing. Here's a quick guide on how to do it:

1. Select the Gameobjects: In the Unity editor, select the gameobjects that you want to convert to OBJ format. These could be 3D models, terrains, or any other gameobjects in your scene.

2. Export as OBJ: Once you have selected the gameobjects, go to the 'File' menu and choose 'Export as OBJ'. This will bring up a dialog where you can specify the export settings such as the file name, texture options, and other parameters.

3. Adjust Export Settings: Depending on your requirements, you may need to adjust the export settings to ensure that the OBJ file is generated according to your preferences. You can set options for texture mapping, normals, and other 3D model properties.

4. Save the OBJ File: After configuring the export settings, click 'Export' to save the OBJ file to your desired location. Unity will then convert the selected gameobjects to OBJ format and generate the corresponding file with all the necessary data.

5. Check the OBJ File: Once the export process is complete, you can open the OBJ file in a 3D modeling software such as Blender, Maya, or 3ds Max to inspect the converted gameobjects. Make sure to verify that the conversion has been successful and that the OBJ file retains all the necessary details.

By following these steps, you can easily convert selected gameobjects to OBJ format in Unity for 3D modeling and sharing. This process allows you to take your Unity creations into other 3D modeling software or share them with others who may not have access to Unity. Whether you're creating game assets, architectural visualizations, or animated scenes, converting your gameobjects to OBJ format opens up a world of possibilities for collaboration and creativity.