diff -urN rt_v44/cg.py rt_v45/cg.py
--- rt_v44/cg.py	2018-05-30 02:56:18.000000000 +0900
+++ rt_v45/cg.py	2018-06-04 23:11:09.000000000 +0900
@@ -20,8 +20,6 @@
 
 	srvs.setup()
 
-	dat.setup()
-
 	(w, h) = ( ut.arg_i('w', 640) , ut.arg_i('h', 480) )
 	div = ut.arg_i('div', 1)
 	(w, h) = map( lambda v: v // div, (w, h) )
@@ -42,14 +40,18 @@
 	eye_f = way.liss_eye()
 	wh2eye = lstx.opt( [ ax.wh_map(w, h), fcx.new(dz), ax.zoom_z(-1), ax.rot_x(90) ] )
 
-	rt.del_cache()
-
+	dep_sec = True
 	n = cnt.n
 	while cnt.up():
 		i = cnt.cur()
 
-		eye2g = ax.new_line( eye_f( cnt.cur_sec() ) )
+		sec = cnt.cur_sec()
+		eye2g = ax.new_line( eye_f(sec) )
 
+		if dep_sec:
+			dep_sec = dat.setup(sec)
+			if 'wf' not in sys.argv:
+				rt.del_cache()
 		f = rt.draw
 		if 'wf' in sys.argv:
 			f = wf.draw
diff -urN rt_v44/dat.py rt_v45/dat.py
--- rt_v44/dat.py	2018-06-03 04:49:15.000000000 +0900
+++ rt_v45/dat.py	2018-06-04 23:11:09.000000000 +0900
@@ -8,6 +8,7 @@
 import cylx
 import fcx
 import lstx
+import way
 import sock
 import val
 import img
@@ -71,17 +72,17 @@
 	if not m.get('rep'):
 		m['rep'] = (0,0)
 
-def setup_ydic(o):
+def setup_ydic(o, sec):
 	t = type(o)
 	if t == list:
-		return list( map( setup_ydic, o ) )
+		return list( map( lambda o: setup_ydic(o, sec), o ) )
 	if t == dict:
-		return dict( map( lambda k: ( k, setup_ydic( o.get(k) ) ), o.keys() ) )
+		return dict( map( lambda k: ( k, setup_ydic( o.get(k), sec ) ), o.keys() ) )
 	if t == str and o.startswith('ax.'):
 		return eval(o)
 	return o
 
-ydic = setup_ydic( ut.yaml_load( ut.arg_s('yaml', 'dat.yaml'), {} ) )
+ydic = {}
 
 def d_setup(d):
 	# return lst [d]
@@ -343,11 +344,16 @@
 typ_d = '{{kind:i4,l2g:lx,def_col:col,maps:[{}],rtd:rtd}}'.format(typ_map)
 typ_data = '[{}]'.format(typ_d)
 
-def setup():
+def setup(sec):
 	data_name = ut.arg_s('data_name', 'copen')
+	fn = ut.arg_s('yaml', 'dat.yaml')
+	yd = setup_ydic( ut.yaml_load(fn, {}), sec )
+	ydic.clear()
+	ydic.update(yd)
 	data = ydic.get(data_name, [])
 	data = sum( map( d_setup, data ), [] )
 	#print('data={}'.format(data))
 	val.cli.set_prop('data', typ_data, data)
 	val.cli.set_prop('lights', '[ltd]', lights)
+	return ut.cmd_exec( "grep '\<sec\>' " + fn ) != ''
 # EOF
diff -urN rt_v44/dat6.yaml rt_v45/dat6.yaml
--- rt_v44/dat6.yaml	1970-01-01 09:00:00.000000000 +0900
+++ rt_v45/dat6.yaml	2018-06-04 23:11:09.000000000 +0900
@@ -0,0 +1,47 @@
+pillar:
+- kind: cube
+  rtd: { base: 0.1, diff: 0, reflect: 0.5, reflact: 0.5, density: 2 }
+  m2g: [ 'ax.zoom_z( way.get([(10,2),(1,2)], sec, True) )' ]
+- kind: pipe
+  rtd: { base: 0.1, diff: 0, reflect: 0.5, reflact: 0.5, density: 2 }
+  m2g: [ 'ax.zoom([2,2,1])', ax.slide_z(-11) ]
+  rxs:
+  - [ m2g, append, 2, [ ax.slide_z(22) ] ]
+
+big_ball:
+- kind: ball
+  rtd: { diff: 0.3 }
+  maps:
+  - fn: IMG_3999_4.mov
+    fn_r: IMG_3999_4.mov
+    t2m: [ ax.zoom_all(2), ax.rot_x(90) ]
+  - fn: IMG_3999_4.mov
+    fn_r: IMG_3999_4.mov
+    t2m: [ ax.zoom_all(2), ax.rot_x(90), ax.rot_z(180) ]
+  m2g: [ ax.zoom_all(1000) ]
+
+colosseum:
+- kind: export
+  export: pillar
+  m2g: [ ax.slide_x(20) ]
+  rxs:
+  - [ m2g, append, 16, [ ax.rot_z(360.0/16) ] ]
+- kind: pipe
+  rtd: { base: 0.1, diff: 0, reflect: 0.5, reflact: 0.5, density: 2 }
+  m2g: [ 'ax.zoom([24, way.get([(24,4),(1,4)], sec, True), 1])', ax.slide_z(-13) ]
+  rxs:
+  - [ m2g, append, 2, [ ax.slide_z(26) ] ]
+
+all:
+- kind: export
+  export: colosseum
+  rxs:
+  - [ m2g, append, 2, [ ax.zoom(16) ] ]
+- kind: ball
+  rtd: { base: 0.1, diff: 0, reflect: 0.5, reflact: 0.5, density: 2 }
+  l2m: [ 'ax.slide( way.liss([-3,-3,-3],[3,3,3],[3,4,5])(sec) )' ]
+  m2g: [ ax.zoom_all(6) ]
+- kind: export
+  export: big_ball
+
+# EOF