Rebuild the NPC hands and add a hand capture

src/test/capture_npc_baseline.gd

@@ -30,6 +30,8 @@ const VARIANTS := [
 ]
 ## Camera orbits the subject at yaw 0 (front = Godot +Z). Portrait views keep
 ## the eye/head in frame; the last two show the full body and crowd silhouette.
+const HAND_VIEW := {"name": "hand", "yaw": 15.0, "distance": 0.80, "height": 0.72,
+	"target_x": 0.27, "target_y": 0.72, "fov": 32.0}
 const VIEWS := [
 	{"name": "front", "yaw": 0.0, "distance": 1.85, "height": 1.55,
 		"target_y": 1.52, "fov": 32.0},
@@ -48,6 +50,8 @@ const SETTLE_FRAMES := 4
 const MAX_FRAMES := 4000
 
 var out_dir := "user://screenshots/npc_baseline"
+var only_view := ""
+var _views: Array = VIEWS
 var frames := 0
 var _phase := "stage_variant"
 var _variant_i := 0
@@ -61,6 +65,10 @@ func _initialize() -> void:
 	for arg in OS.get_cmdline_user_args():
 		if str(arg).begins_with("--out="):
 			out_dir = str(arg).substr(6)
+		elif str(arg).begins_with("--view="):
+			only_view = str(arg).substr(7)
+	if only_view == "hand":
+		_views = [HAND_VIEW]
 	root.size = Vector2i(1280, 720)
 	_build_stage()
 
@@ -83,7 +91,7 @@ func _process(_delta: float) -> bool:
 		"shoot":
 			_shoot()
 			_view_i += 1
-			if _view_i >= VIEWS.size():
+			if _view_i >= _views.size():
 				_view_i = 0
 				_variant_i += 1
 				if _variant_i >= VARIANTS.size():
@@ -169,10 +177,10 @@ func _stage_variant() -> void:
 func _frame_view() -> void:
 	if _avatar == null or not is_instance_valid(_avatar):
 		return
-	var view: Dictionary = VIEWS[_view_i]
+	var view: Dictionary = _views[_view_i]
 	var yaw := deg_to_rad(float(view["yaw"]))
 	var distance := float(view["distance"])
-	var target := Vector3(0.0, float(view["target_y"]), 0.0)
+	var target := Vector3(float(view.get("target_x", 0.0)), float(view["target_y"]), 0.0)
 	_camera.position = target + Vector3(sin(yaw) * distance, float(view["height"]) - target.y,
 		cos(yaw) * distance)
 	_camera.fov = float(view["fov"])
@@ -180,7 +188,7 @@ func _frame_view() -> void:
 
 func _shoot() -> void:
 	var variant: Dictionary = VARIANTS[_variant_i]
-	var view: Dictionary = VIEWS[_view_i]
+	var view: Dictionary = _views[_view_i]
 	var dir := ProjectSettings.globalize_path(out_dir)
 	DirAccess.make_dir_recursive_absolute(dir)
 	var base := "%s__%s" % [variant["name"], view["name"]]