grid = key=master,group=grid,depth=1,widthcm=7,heightcm=7.5,gcell=20,  \
       xmarg=0,ymarg=0,shrink=false,rounded=true,                      \
       border_thickness=very thin,border_color=gray20,                 \
       gback_color=gray85,gline_thickness=very thin,gline_color=gray85
 
swarmpath = key=,group=,depth=100,begtime=0,endtime=0,nowtime=0
 
frame = key=framekey,group=frame,depth=100,xl=-40,xh=40,yl=-40,yh=50
 
image = key=ipf1,group=ipfs,depth=800,x=0,y=0,image_size=6.12, \
        image_file=scn_pngs/overtaking_cpa.png
 
image = key=colorstrip,group=ipfs,depth=800,x=0,y=43,image_size=6, \
        image_file=scn_pngs/colorstrip_thin.png
 
vessel = key=center_ship,group=frame,depth=900,x=0,y=0,hdg=2,     \
         body_type=kayak,length=8,wid_mbody=3.2,wid_stern=2.172,  \
         pct_mbody=0.5,line_color=black,line_thickness=very thin, \
         fill_color=white
 
line = key=line_east_west,group=frame,depth=900,x1=-36,y1=0,x2=36,y2=0, \
       line_color=white,line_style=solid,line_thickness=very thin
 
line = key=line_north_south,group=frame,depth=900,x1=0,y1=36.6,x2=0, \
       y2=-37,line_color=white,line_style=solid,                     \
       line_thickness=very thin
 
point = key=flag_red,group=playing_field,depth=904,x=0,y=0, \
        point_size=0.01,point_color=white
 
circle = key=ipf_ring_border,group=frame,depth=950,x=0,y=0,radius=36.5, \
         line_color=black,fill_color=empty,line_style=solid,            \
         line_thickness=thin
 
label = key=label_north,group=frame,depth=990,label={\bf N}, \
        label_color=black,label_size=tiny,x=0,y=38
 
label = key=label_east,group=frame,depth=990,label={\bf E}, \
        label_color=black,label_size=tiny,x=37.9,y=0
 
label = key=label_south,group=frame,depth=990,label={\bf S}, \
        label_color=black,label_size=tiny,x=0,y=-37.8
 
label = key=label_west,group=frame,depth=990,label={\bf W}, \
        label_color=black,label_size=tiny,x=-38.6,y=0
 
label = key=cpa_key,group=frame,depth=990,label={$cpa(\theta, v)$}, \
        label_color=black,label_size=tiny,x=0,y=47
 
label = key=cpa_key_max,group=frame,depth=990,label=47.2m, \
        label_color=black,label_size=tiny,x=36,y=47
 
label = key=cpa_key_min,group=frame,depth=990,label=0, \
        label_color=black,label_size=tiny,x=-36,y=47
 
wedge = key=speed_1p0,group=speed_key,depth=1000,hidden=true,x=0,y=0, \
        rad_low=9,rad_hgh=9,ang_low=120,ang_hgh=150,rel_ang=0,        \
        line_color=white,fill_color=empty,line_style=solid,           \
        line_thickness=very thin
 
wedge = key=speed_2p0,group=speed_key,depth=1000,x=0,y=0,rad_low=18,   \
        rad_hgh=18,ang_low=120,ang_hgh=150,rel_ang=0,line_color=white, \
        fill_color=empty,line_style=solid,line_thickness=very thin
 
wedge = key=speed_3p0,group=speed_key,depth=1000,hidden=true,x=0,y=0, \
        rad_low=27,rad_hgh=27,ang_low=120,ang_hgh=150,rel_ang=0,      \
        line_color=white,fill_color=empty,line_style=solid,           \
        line_thickness=very thin
 
label = key=speed_1p0_label,group=speed_key,depth=1000,hidden=true, \
        label=1.0m/s,label_color=white,label_size=tiny,x=9,y=-3
 
label = key=speed_2p0_label,group=speed_key,depth=1000,label=2.0m/s, \
        label_color=white,label_size=tiny,x=16,y=-7
 
label = key=speed_3p0_label,group=speed_key,depth=1000,hidden=true, \
        label=3.0m/s,label_color=white,label_size=tiny,x=24,y=-11