feat: add testing script for Blender GLTF export capability with material creation

tools/test_blender_export.py

@@ -0,0 +1,85 @@
+import bpy
+import os
+
+print("="*60)
+print("TESTING BLENDER EXPORT CAPABILITY")
+print("="*60)
+
+# Check if GLTF export is available
+try:
+    print("\n1. Checking if GLTF export operator exists...")
+    if hasattr(bpy.ops.export_scene, 'gltf'):
+        print("   ✓ GLTF export operator found!")
+    else:
+        print("   ✗ GLTF export operator NOT FOUND!")
+        print("   You need to enable the glTF 2.0 add-on:")
+        print("   Edit → Preferences → Add-ons → search 'gltf' → enable it")
+        raise Exception("GLTF exporter not available")
+except AttributeError:
+    print("   ✗ export_scene module issue")
+    raise
+
+# Test creating a simple cube
+print("\n2. Creating test cube...")
+bpy.ops.object.select_all(action='SELECT')
+bpy.ops.object.delete(use_global=False)
+bpy.ops.mesh.primitive_cube_add(size=1.0)
+cube = bpy.context.active_object
+print(f"   ✓ Created cube: {cube.name}")
+
+# Test creating a material
+print("\n3. Creating test material...")
+mat = bpy.data.materials.new(name="TestMat")
+mat.use_nodes = True
+nodes = mat.node_tree.nodes
+
+# Find Principled BSDF
+bsdf = None
+for node in nodes:
+    print(f"   Found node: {node.name} (type: {node.type})")
+    if node.type == 'BSDF_PRINCIPLED':
+        bsdf = node
+        break
+
+if bsdf:
+    print(f"   ✓ Found Principled BSDF node")
+    bsdf.inputs['Base Color'].default_value = (1.0, 0.0, 0.0, 1.0)
+    print(f"   ✓ Set color to RED")
+else:
+    print(f"   ✗ No Principled BSDF found, creating one...")
+    bsdf = nodes.new(type='ShaderNodeBsdfPrincipled')
+    bsdf.inputs['Base Color'].default_value = (1.0, 0.0, 0.0, 1.0)
+
+# Apply material to cube
+cube.data.materials.append(mat)
+print(f"   ✓ Applied material to cube")
+
+# Test export
+output_dir = os.path.expanduser("~/.cache/starworld/primitives")
+os.makedirs(output_dir, exist_ok=True)
+test_path = os.path.join(output_dir, "test_cube.glb")
+
+print(f"\n4. Attempting export to: {test_path}")
+try:
+    bpy.ops.export_scene.gltf(
+        filepath=test_path,
+        export_format='GLB',
+        use_selection=False  # Export all
+    )
+    print(f"   ✓ EXPORT SUCCESSFUL!")
+    
+    # Check if file exists
+    if os.path.exists(test_path):
+        size = os.path.getsize(test_path)
+        print(f"   ✓ File created: {size} bytes")
+    else:
+        print(f"   ✗ File was not created!")
+        
+except Exception as e:
+    print(f"   ✗ EXPORT FAILED: {e}")
+    import traceback
+    traceback.print_exc()
+
+print("\n" + "="*60)
+print("TEST COMPLETE")
+print("="*60)