CODEWITHSUNDEEP
pythonmayamel
JKeil
JKeil

Reputation: 11

Print xyz values of an animating locator in Maya

I am trying to print out the xyz coordinates over time of a series of animating locators (named tracker1, tracker2, etc). I need to reconvert the locator's xyz data into a text file so I can then bring it into an alternate tracking program. I know that what I need to do on a base level is run a mel or python script to print out the xyz data in a complete list within the script editor, but am having trouble with syntax. The text file itself I can take care of, and I do not need a compiling script for all the locators at once either, though that would be great. Any idea how to do this?

Revised:
Ok so here is what we have right now.
We are using this script, and successfully generating the xyz values for a single frame.
Example: item name "tracker1",
frame: frame "1"
Script: 

for ($item in `ls -sl`){  
$temp=`xform -q -t -ws $item `;  
print ($temp[0]+" "+$temp[1]+" "+$temp[2]+"\n");};  
0.1513777615 22.7019734 176.3084331

Thing is, we need this xyz information for every frame in the sequence (frames 1-68).
Thanks in advance

Upvotes: 1

Views: 1034

Answers (1)

davidlatwe
davidlatwe

Reputation: 95

Try this.

I wrote in Python, this can record all selected objects' translate attr at every frame,

and write in to a .txt file.

start frame and end frame was defined by time slider's playback range.

# .txt file path where you want to save, for example C:/trackInfo.txt
outPath = 'C:/trackInfo.txt'
# start time of playback
start = cmds.playbackOptions(q= 1, min= 1)
# end time of playback
end = cmds.playbackOptions(q= 1, max= 1)
#locators list
locList = cmds.ls(sl= 1)
if len(locList) > 0:
    try:
        # create/open file path to write
        outFile = open(outPath, 'w')
    except:
        cmds.error('file path do not exist !')
    # info to write in
    infoStr = ''
    # start recoard
    for frame in range(int(start), int(end + 1)):
        # move frame
        cmds.currentTime(frame, e= 1)
        # if you need to add a line to write in frame number
        infoStr += str(frame) + '\n'
        # get all locators
        for loc in locList:
            # if you need to add a line to write in locator name
            infoStr += loc + '\n'
            # get position
            pos = cmds.xform(loc, q= 1, t= 1, ws= 1)
            # write in locator pos
            infoStr += str(pos[0]) + ' ' + str(pos[1]) + ' ' + str(pos[2]) + ' ' + '\n'
    # file write in and close
    outFile.write(infoStr)
    outFile.close()
else:
    cmds.warning('select at least one locator')

For moving time frame

1. Use currentTime cmd

Mel:

currentTime -e $frame

Python:

cmds.currentTime(frame, e= 1)

2. With a for loop and set start, end frame number

Mel:

// in your case
int $start = 1;
int $end = 68;
for( $frame = $start; $frame < $end + 1; $frame++ ){
    currentTime -e $frame;
    // do something...
}

Python:

# in your case
start = 1
end = 68
for frame in range(start, end + 1):
    cmds.currentTime(frame, e= 1)
    # do something...

Upvotes: 2

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