Need help making a simple script for my webcam

Hey everyone, fairly new to applescript programming. I just bought a usb camera for my macbook because I use it for video conferencing/playing around, and it is better quality than the built in isight. However, in order to use this camera I need to use drivers from a program called camTwist. This being said camTwist needs to be opened first and the usb camera must be selected from camTwist Step 1 list in order for any other application to use the camera. I just want to make a simple program that would open camTwist first, then select "webcam" from the list (double click it like I always have to in order to select it) in order to activate the driver, and then open photo booth which would then be using the camTwist driver in order to take pictures.
I made a crude program but it does not automatically select "webcam" from the Step 1 list in camTwist:
tell application "CamTwist" to activate
delay 10
tell application "Photo Booth" to activate
that’s basically it. I set the delay to 10 seconds so that when camTwists boots up first I can manually select my webcam. HOWEVER, I would like to make a script that would boot up CamTwist first, select my webcam from the list automatically, and then open Photo Booth with the CamTwist webcam driver already selected.
Don't know much about applescript so any help to make a working script to solve my problem would be greatly appreciated! Thanks!

Solved my problem but now I need help with something else! First I used CamTwist user options to create user defined hot keys with the specific purpose to load the webcam. I chose Command+B. I tested it out in CamTwist and it worked. The program follows a logical order from there. First it loads CamTwist, then after a short delay it presses the hot keys in order to load the webcam from the video source list, then another short delay and Photo Booth is opened with the driver loaded from camTwist. Everything works Perfect! Here's the code:
tell application "System Events"
tell application "CamTwist" to activate
delay 0.5
--Press command+b which is a user defined hot key to load webcam
key code 11 using command down
end tell
delay 0.5
tell application "Photo Booth" to activate
My Next question is, would it be possible with this same script to have both applications quit together. For example I always quit Photo Booth first, so when I quit photo booth is there a way to make CamTwist also quit and keep everything within the same script? Please let me know. This forum has been very helpful and lead me to a solution to my problem! Hoping I can solve this next problem as well! Thanks everyone.

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Last edited by dgz (2013-08-29 21:24:28)

Xyne wrote:
You should also quote the variables and output in double quotes to make the code robust, e.g.
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Without the quotes, whitespace will break the code. Even if you don't expect whitespace in any of the paths, it's still good coding practice to include the quotes imo.
thanks for the tip.
here it is, anyhow:
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thanks for the help.
Last edited by dgz (2013-08-29 21:26:32)

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What I mean is there should be some sort of parameter in the script so that when I run it, I can choose whatever directory I want to compress rather than just be limited to just /.
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I see, so it's like double defining? But once I remove the 'double weight' and 'double bias', this is what I get.
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frontSpring=weight*bias/100*0.3828;
^
ForzaSpringCalculation.java:31: operator * cannot be applied to java.lang.String,int
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ForzaSpringCalculation.java:31: operator / cannot be applied to java.lang.String,int
rearSpring=weight*100-bias/100*.3828;
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