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Rendering OBJ File in Android: A Quick Guide

Sep 27, 2024

So you've got an OBJ file and you want to render it in your Android app? Well, you're in luck because I've got the perfect solution for you! Follow these steps to render your OBJ file in Android using OpenGL and OBJParser.

Step 1: Set up your Android project

First things first, you'll need to set up an Android project in Android Studio. Once you have your project ready, make sure to include the necessary permissions for reading external storage if your OBJ file is located outside the app's internal storage.

Step 2: Add the necessary dependencies

You'll need to add the necessary dependencies for rendering 3D models in your Android app. This includes adding the OpenGL library and OBJParser library to your project. You can do this by adding the following dependencies in your build.gradle file:

dependencies {

implementation 'com.android.support:appcompat-v7:28.0.0'

implementation 'com.android.support:design:28.0.0'

implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.21'

implementation 'com.duyha.obj3dparser:obj3dparser:1.0.0'

implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.0'

}

Step 3: Load and render the OBJ file

Now that your project is set up and you have the necessary dependencies, it's time to load and render the OBJ file. You can use the OBJParser library to parse the OBJ file and retrieve the vertices, normals, and texture coordinates. Then, use OpenGL to render the 3D model based on the data obtained from the OBJ file.

Step 4: Handle touch events for interaction (optional)

If you want to add touch interaction to your 3D model, you can handle touch events in your Android app. This could include rotating, zooming, or panning the 3D model based on user gestures.

And that's it! You've successfully rendered an OBJ file in your Android app using OpenGL and OBJParser. Now you can showcase 3D models in your app with ease. Happy rendering!

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