diff -urN rt_v21/dat.py rt_v22/dat.py
--- rt_v21/dat.py	2018-04-06 15:34:01.000000000 +0900
+++ rt_v22/dat.py	2018-04-15 18:19:02.000000000 +0900
@@ -151,12 +151,38 @@
 	'l2m': [ ax.zoom_z(2), ax.slide_z(-1), ax.zoom_all(5), ax.slide([30,30,0]) ],
 } ]
 
+
+r = 1000
+
+ball_world = [ {
+	'kind': 'ball',
+	'rtd': { 'diff': 0.3 },
+	'l2m': [ ax.zoom_all(1.0/1.2) ],
+	'maps': maps,
+	'm2g': [ ax.zoom_all(r*1.2), ax.slide_z(-r/2) ],
+},{
+	'kind': 'circle',
+	'rtd': { 'diff': 0.1, 'reflect': 0.3 },
+	'l2m': [ ax.zoom_all(10) ],
+	'maps': maps,
+	'm2g': [ ax.zoom_all(r/10), ax.slide_z(-r/2) ],
+},{
+	'kind': 'ball',
+	'rtd': rtd,
+	'm2g': [ ax.zoom_all(10), ax.slide_x(10) ]
+},{
+	'kind': 'cube',
+	'rtd': rtd,
+	'm2g': [ ax.zoom_all(7), ax.slide_x(-10) ]
+} ]
+
 data_dic = {
 	'copen': copen,
 	'ball': ball,
 	'cube': cube,
 	'poly_n_pyramid': poly_n_pyramid,
 	'objs': objs,
+	'ball_world': ball_world,
 }
 
 data = data_dic.get( ut.arg_s('data_name'), [] )
diff -urN rt_v21/rt.py rt_v22/rt.py
--- rt_v21/rt.py	2018-04-12 21:29:06.000000000 +0900
+++ rt_v22/rt.py	2018-04-15 18:02:30.000000000 +0900
@@ -31,7 +31,7 @@
 			return []
 		#(x, y, _) = lstx.tr( m.get('wh2xyz'), 'g2l', nv_line.p )
 		(x, y, _) = lstx.tr_p( m.get('wh2xyz'), 'g2l', nv_line.p )
-		sec = video.cur_sec()
+		sec = video.cur_sec() + ut.arg_f('init_sec', 0.0)
 		return img.col( fn, sec, int(x), int(y), [] )
 
 	cols = map( f, d.get('maps') )