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| /* Save this file with a jsx extension and place in your | |
| Illustrator/Presets/en_US/Scripts folder. You can then | |
| access it from the File > Scripts menu */ | |
| var decimalPlaces = 3; | |
| if (app.documents.length > 0) { | |
| if (app.activeDocument.selection.length < 1) { | |
| alert('Select a path'); | |
| } else if (app.activeDocument.selection[0].area) { | |
| // Individual Items | |
| var objects = app.activeDocument.selection; | |
| } else if (app.activeDocument.selection[0].pathItems) { | |
| // Group/Compound Shape | |
| var objects = app.activeDocument.selection[0].pathItems; | |
| } else { | |
| alert('Please select a path or group.'); | |
| } | |
| // Collect info | |
| var totalArea = 0; | |
| for (var i=0; i<objects.length; i++) { | |
| if (objects[i].area) { | |
| var totalArea = totalArea + objects[i].area; | |
| } | |
| } | |
| // Conversions | |
| var ppi = 72; | |
| var areaIn = totalArea / ppi / ppi; | |
| if (areaIn < 0) var areaIn = -areaIn; | |
| var areaCm = areaIn * 6.4516; | |
| // Display | |
| alert('Shape Area\ | |
| ' + areaIn.toFixed(decimalPlaces) + ' in² \ | |
| ' + areaCm.toFixed(decimalPlaces) + ' cm² \n\ | |
| ' + i + ' shapes'); | |
| } |
Okay got my answer within 1 minute. Its exposed, I'll check if I can update it.
I had been working also on parts where the script still fails. That's internal compound path items. Still haven't found a method to properly do those. Tried many variations doing all kinds of automated path operators, but it keeps failing.
I'll do some work and see if I can implement the scaleFactor
@schroef thank you so much for looking into this so quickly.
What is the issue with compound paths? I thought it was providing the area accurately and I have therefore been using it to do so for a couple of years?
Well it does, but there are so manu different ways art can be created using a mix of shapes and compound paths. The issue arise when such such are combined into one, but are build of many separate sub items. There are certain cases where it's not working properly
I need to check again which cases. I made some test for this months ago. But then laid aside as I couldn't figure it out and worked on other scripts.
Ps I was just thinking. If you run alert(app.activeDocument.scaleFactor) from a simple jsx file. It will return the scale factor. If you use this in the latest getShapeArez you could apply a scale. I have not tested it yet. But I think it should work
Okay, i think i got it working now. Would you test this version. It now automatically check the scaleFactor
scale factor is automatically checked, dont need to check any setting or what so ever
version should show v0.1.7.1
https://github.com/schroef/Illustrator-Scripts/blob/master/GetShapeArea-dialog.jsx
Ill also check and see if i can get compound shapes to work better. It currently still has issues and doesnt return correct area.
@schroef wow, thanks for doing that so quickly! Will get this tested ASAP! :)
@schroef ericadyson is correct, you are a star! I have tested v0.1.7.1 using a simple 100x100cm square on a 600x600cm artboard and the old version gave an area of 100cm2 (100x too small) and v0.1.7.1 gave an area of 10,000cm2 which is correct! I need to do some further testing on more complicated designs, but for now it looks very promising. A HUGE THANK YOU :)
Make sure not use difficult compounds shape with negative shapes. I'm trying to figure out what's going wrong in those cases. It has issues when a group consists of multiple compundpathitems with negative (cutout) shapes and return faulty values
@schroef is it that it includes the negative/cutout area in the area calculation?
Seems to work for something like this. But is this too simple?
Those simple shapes work. I'll post a more complex shape when I'm at work. It when there is a group build of sub items which are compound shapes. Each of these have lots of cutouts. This is where it goes wrong. I must have made an error somehwere
Look here is an example of a more complex shape. The item in the middle is a group build of 4 compoundPathItem, noticed how the end result is wrong. It should be 250.0952 if my math is still correct
If i run on a single section, it does work
When i run a multi selection of compoundPathItems, it also seems to work correct. I did some tricks applying some filters and expanding it, to make sub items work. But something is going wrong
Its really depends on how the shape is build. Because if i group the the above version and then run it, it also returns that 250....
Notice this, look how they are looking to be the same in terms of structure. The outcome is different though, i dont get why that is?!
Check the sub items, i noticed that a shape can be build in different manner and looking the same. The way i am calculating compounds with negative shapes is by checking the polarity. Normally a cutout is negative. But it seems the most outer shape can also be negative and still show the same. Look at the images below. They look the same, but the outer shape has different polarity. Its kinda weird that its actually showing the shape correctly
Example negative polarity on outer shape
Example positive polarity on outer shape
@schroef are you only finding this with the design above or have you seen the same in other cases? I am not sure I can replicate the error.
@candiceda
Yeah, that's is probably true. I think illustrator uses an internal scaling factor for this "new" large scale document. This script is not build for that.
Perhaps I can do some research, see if this properties are exposed for scripting. If so, than that would be an easy fix