Measure a particular Layer Properties (width & height) through coding

Question

Hi,
     I am working on the Apparel Model images. Everyday we work with different models. Once done with the shooting process, we  make the required correction on it so obviously we come across height issues at the retouch (Photoshop CS5) end.
The following steps will describe the process on how we do it. We have a template for the image cropping (Template's Width X height: 3700 X 5000 pxls). Usally we used to drag the template to the apparel images then will make a proportianate tranform for the template according to the model's height and crop it. this is what we are doing in the manual process. We have an idea of creating a script for this category. the same steps will be executed by the script. First Select the appropriate folder which will be processed by this script. application will open the images one by one. Steps: Open the Template image, copy and paste it on the another document. According to the Model's height make a proportianate transform to the template layer (In this step, we need to know about the particular layer properties for ex: (if the activeDocument's height is 3000pxls. the tranform will happen proportianately to the template layer).
My Question is How do we measure  a particuler layer properties and how to access it through coding?
My Second Question is : How do we get the properties data and how it will be applied through coding?
I am waiting your reply.
thanks,
Rajiv.s 

Answer 1

Open the Template image, copy and paste it on the another document.
Copy/pasting via Script is not such a great idea, the method duplicate may be a better fit to duplicate a layer into another file or group.
My Question is How do we measure  a particuler layer properties and how to access it through coding?
Layers habe a property called bounds, this describes the left, top, right and bottom coordinates.
It may be prudent to set the unitRulers via the Script to make sure they are always the same units (px, pt, mm …).
#target photoshop
var theBounds = app.activeDocument.activeLayer.bounds;
var theWidth = theBounds[2] - theBounds[0];
var theHeight = theBounds[3] - theBounds[1];
alert ("layer is " + theWidth + " x " + theHeight);