pycollada

import os from collada import Collada, material, geometry, source import numpy as np # 1. Create a new COLLADA document mesh = Collada() # 2. Define geometry: a simple triangle # Vertices verts = np.array([ 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0, 0.0 ]) normals = np.array([ 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0 ]) vert_src = source.FloatSource('my_verts-positions', verts, ('X', 'Y', 'Z')) norm_src = source.FloatSource('my_normals-normals', normals, ('X', 'Y', 'Z')) # Indices for a single triangle triangles = np.array([0, 0, 1, 1, 2, 2]) # vertex index, normal index, ... geom = geometry.Geometry(mesh, 'geometry0', 'my_triangle_geometry', [geometry.Triangles(vert_src, norm_src, triangles, 'material0')]) mesh.geometries.append(geom) # 3. Create a material effect = material.Effect('effect0', [], 'phong', diffuse=(1, 0, 0, 1)) mat = material.Material('material0', 'red_material', effect) mesh.materials.append(mat) mesh.effects.append(effect) # 4. Save the COLLADA document output_file = 'my_first_collada.dae' mesh.write(output_file) print(f"Created '{output_file}'") # 5. Load an existing COLLADA document (or the one we just created) # For demonstration, we'll try to load the file we just saved. if os.path.exists(output_file): loaded_mesh = Collada(output_file) print(f"Loaded '{output_file}' with {len(loaded_mesh.geometries)} geometries.") # Example: Accessing a geometry if loaded_mesh.geometries: print(f"First geometry ID: {loaded_mesh.geometries[0].id}") else: print(f"Could not load '{output_file}'. Make sure the file exists.")