Pointmap: bump icosphere subdiv to 1 (smooth balls); cut max_points to 25K to balance GLB size

app.py

@@ -236,7 +236,7 @@ def _triangulate_grid(pointmap_hwc: np.ndarray, mask_hw: np.ndarray,
 
 
 def _make_glb(image_pil_texture: Image.Image, pointmap_hwc: np.ndarray,
-              mask_hw: np.ndarray, max_points: int = 60_000) -> str:
+              mask_hw: np.ndarray, max_points: int = 25_000) -> str:
     """Render the pointmap as a cloud of tiny coloured spheres (one per pixel).
 
     Avoids triangulation artifacts entirely — there's no surface mesh between
@@ -273,10 +273,10 @@ def _make_glb(image_pil_texture: Image.Image, pointmap_hwc: np.ndarray,
     extent = float(np.ptp(pts, axis=0).max()) if len(pts) else 1.0
     radius = max(extent / max(np.cbrt(len(pts)), 1.0) * 0.7, 1e-4)
 
-    # Icosphere template (subdivisions=0 → 12 verts, 20 faces — light per instance).
-    sphere = trimesh.creation.icosphere(subdivisions=0, radius=radius)
-    sv = sphere.vertices.astype(np.float32)         # (V=12, 3)
-    sf = sphere.faces.astype(np.int64)              # (F=20, 3)
+    # Icosphere template (subdivisions=1 → 42 verts, 80 faces — smoother balls).
+    sphere = trimesh.creation.icosphere(subdivisions=1, radius=radius)
+    sv = sphere.vertices.astype(np.float32)         # (V=42, 3)
+    sf = sphere.faces.astype(np.int64)              # (F=80, 3)
     V, F = len(sv), len(sf)
     N = len(pts)