Upload example/demo.py

example/demo.py

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+"""
+One-click demo: creates a synthetic sphere point cloud and runs the full pipeline.
+Perfect for beginners who want to see it work immediately.
+
+Usage:
+    python example/demo.py
+"""
+import subprocess
+import sys
+import os
+
+# 1. Generate synthetic data
+print("=" * 60)
+print("Step 1: Creating a synthetic sphere point cloud...")
+print("=" * 60)
+result = subprocess.run([sys.executable, os.path.join(os.path.dirname(__file__), "make_sphere.py")])
+if result.returncode != 0:
+    print("Failed to generate sphere. Aborting.")
+    sys.exit(1)
+
+# 2. Run the pipeline with reduced iterations for speed
+print("\n" + "=" * 60)
+print("Step 2: Running LightweightMR (reduced quality for speed)...")
+print("  This will take ~5–15 minutes on CPU, ~1 minute on GPU.")
+print("=" * 60)
+cmd = [
+    sys.executable, "-m", "lightweightmr",
+    "-i", "example/sphere.ply",
+    "-o", "example/sphere_mesh.ply",
+    "--device", "cpu",
+    "--sdf-iters", "5000",
+    "--vg-iters", "2000",
+    "--vertices", "800",
+]
+print(f"Command: {' '.join(cmd)}\n")
+result = subprocess.run(cmd)
+if result.returncode != 0:
+    print("Pipeline failed. See error above.")
+    sys.exit(1)
+
+print("\n" + "=" * 60)
+print("SUCCESS!")
+print("=" * 60)
+print(f"  Input:  example/sphere.ply")
+print(f"  Output: example/sphere_mesh.ply")
+print("\nOpen the mesh in Blender, MeshLab, or Windows 3D Viewer.")
+print("For better quality, re-run with more iterations:")
+print("  python -m lightweightmr -i example/sphere.ply -o example/sphere_mesh.ply --sdf-iters 20000 --vg-iters 8000 --vertices 3400")