Aspose.3D FOSS
Python
How to Get Started with 3D in Python

How to Get Started with 3D in Python

Prerequisites

  • Python 3.8 or later
  • pip package manager

Step 1 — Install the Package

Install Aspose.3D FOSS for Python from PyPI:

pip install aspose-3d-foss

Verify the installation:

import aspose.threed as a3d
print(a3d.__version__)

Step 2 — Create Your First 3D Scene

A Scene is the root container for all 3D objects. The constructor accepts an optional entity, parent scene, and name:

import aspose.threed as a3d

# Create an empty scene (CLM-3d-35d727)
scene = a3d.Scene()

# Access the root node of the scene (CLM-3d-859ac2)
root = scene.root_node  # root_node is a property, not a method — no ()
print("Root node:", root)

Step 3 — Add a Mesh to the Scene

Mesh represents polygon geometry. Node attaches entities to the scene graph:

import aspose.threed as a3d

scene = a3d.Scene()

# Create a named mesh (CLM-3d-529c11)
mesh = a3d.Mesh("my_mesh")

# Create a node and attach the mesh (CLM-3d-0edae8)
node = a3d.Node("my_node", mesh)

# Add the node as a child of the root (CLM-3d-a403f5)
scene.root_node.add_child_node(node)  # root_node is a property, not a method — no ()

Step 4 — Load an Existing 3D File

Scene.open() loads a 3D file from disk or stream. It accepts a path and optional load options:

import aspose.threed as a3d

# Load an OBJ file (CLM-3d-d84964)
scene = a3d.Scene()
scene.open("model.obj")

# Inspect the loaded scene
root = scene.root_node  # root_node is a property, not a method — no ()
print("Child nodes:", len(root.child_nodes))  # child_nodes is a property, not a method — no ()

To detect the file format before loading:

import aspose.threed as a3d

# Detect the format from a file name (CLM-3d-d2de62)
fmt = a3d.FileFormat.detect(None, "model.fbx")
if fmt:
    print("Detected format:", fmt.extension)  # extension is a property, not a method — no ()

Step 5 — Save Output to a File

Scene.save() exports the scene to any supported format. The recommended approach is extension-based auto-detection: Aspose.3D infers the format from the file extension (CLM-3d-8051bd, CLM-3d-b28d7a, CLM-3d-de8e1a):

import aspose.threed as a3d

scene = a3d.Scene()
# ... populate scene ...

# Save as Wavefront OBJ — extension auto-detects the format
scene.save("output.obj")

# Save as glTF 2.0 binary — .glb extension triggers binary GLB output
scene.save("output.glb")

You can also pass an explicit format using the factory methods FileFormat.WAVEFRONT_OBJ() or FileFormat.GLTF2(), but extension auto-detection is simpler and more portable.

Next Steps

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