backend.py

import trimesh
import numpy as np
from PIL import Image
import io

# Function to load a random object
def load_random_object():
    # Replace with the path to your 3D model file
    object_path = "example.obj"  # Ensure this file exists in the project directory
    return trimesh.load(object_path)

# Function to capture views
def capture_views(obj):
    views = {}
    # Define angles for each view
    view_angles = {
        'front': [0, 0, 0],
        'top': [90, 0, 0],
        'bottom': [-90, 0, 0],
        'side': [0, 90, 0]
    }

    for view_name, angles in view_angles.items():
        # Create a copy of the object to apply transformations
        obj_copy = obj.copy()
        # Apply rotation
        rotation_matrix = trimesh.transformations.euler_matrix(*np.radians(angles))[:3, :3]
        obj_copy.apply_transform(rotation_matrix)

        # Render to an image (using off-screen rendering)
        scene = obj_copy.scene()
        png_data = scene.save_image(resolution=[600, 600])

        # Convert PNG data to a PIL Image
        views[view_name] = Image.open(io.BytesIO(png_data))
    return views