Convert OBJ to STL in Java with the help of 3D document control Aspose.3D

3D modeling and printing has become increasingly popular, and with it comes the need to convert files between different formats. A common task is to convert OBJ files to an STL format that can be used for 3D printing. OBJ files are the final product of 3D modeling, usually generated by CAD software. STL files contain information about 3D vector graphics. In this post, we will learn how to convert OBJ to STL in Java using Aspose.3D.

Aspose.3D  is a feature-rich game software and computer-aided design (CAD) API that can manipulate documents without relying on any 3D modeling and rendering software. The API supports Discreet3DS, WavefrontOBJ, FBX (ASCII, Binary), STL (ASCII, Binary), Universal3D, Collada, glTF, GLB, PLY, DirectX, Google Draco file formats and more. Developers can easily create, read, convert, modify and control the essence of the 3D file format.

Java OBJ to STL Converter – Free Download

We will use Aspose.3D for Java  API to convert OBJ file to STL format. It allows you to create, edit, manipulate and save 3D formats. It enables Java applications to process 3D documents without installing any software packages on the computer.

Please download the JAR of the API or add the following pom.xml configuration in your Maven based Java application .

<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://repository.aspose.com/repo/</url>
</repository>

<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-3d</artifactId>
<version>23.7.0</version>
</dependency>

Convert OBJ to STL using options in Java

We can specify STL save options when converting OBJ files to STL format by following these steps:

1. Use the Scene.fromFile() method to load the input OBJ file.
2. Create an instance of the StlSaveOptions class.
3. After that, specify the STL save options, such as setFlipCooperativeSystem , getLookupPaths , etc.
4. Finally, call the save() method to save it as STL.

The following code sample demonstrates how to convert OBJ to STL using the STL save option in Java .

// Load input OBJ file with Scene class.
Scene scene = Scene.fromFile("C:\\Files\\CreateFanCylinder.obj");

// Initialize an object
StlSaveOptions saveSTLOpts = new StlSaveOptions();

// Flip the coordinate system.
saveSTLOpts.setFlipCoordinateSystem(true);

// Configure the look up paths to allow importer to find external dependencies.
String dataDir = "C:\\Files\\";
saveSTLOpts.getLookupPaths().add(dataDir);

// Convert OBJ to STL file.
scene.save("C:\\Files\\scene_out.stl", saveSTLOpts);

OBJ to STL Online Converter

You can also convert OBJ files to STL format using this free online OBJ to STL converter tool (developed using the API mentioned above).

In conclusion, converting OBJ to STL in Java opens up a world of possibilities for 3D model manipulation and optimization. For both beginners and experienced programmers, Aspose.3D for Java simplifies the conversion process. Besides converting OBJ to STL in Java, you can also try free online conversion tools.