User`s manual
V 1   P R O F E S S I O N A L   5 . 7  
 57
Trace 
This golf-specific tool allows you to draw a continuous arc (a Bezier curve) 
through the club path, or any moving object in the video. For a golf swing, 
you may choose  to  target  the backswing and the downswing  together  or 
separately.  The line may be shaded to better visualize the varying speed of 
the club head through the swing. Here’s a completed example using the color blue for 
the backswing and the color yellow for the downswing: 
Before using 
Trace
, you must first set both the impact point and the top-of-backswing 
key  positions.    For  best  results,  you  should  also  manually  set  the  address  position. 
Instructions  for  doing  this  may  be  found  in  the  Video  Playback 
chapter. 
When you click 
Trace
, a window opens to guide you through the 
process. 
Check 
Vary  color  depth with speed
 if you want to see the trace 
color become brighter  as  the speed increases and become darker 
when the speed decreases. 
Check 
Save  trace  with  tab
  if  you want  the V1  to  automatically 
recall  the  trace  when  you open the  video  and click 
Trace
  in  the 
future. 
Select either the 
Backswing
 or the 
Downswing
, or both. 
Select the colors that you would like to use by clicking on them. 
Click 
Begin
 when you are ready to begin drawing the trace.  The 
window will change to show this text: 










