Ignore objects with constant alpha less than 1.0
Posted: Thu Oct 10, 2019 6:15 pm
I am trying to build an action that converts all 100 K objects to a spot swatch, and ignore K objects less than 100.
The problem is Pitstop selects 100 K objects, regardless of their constant alpha. For example, we have a file built in Illustrator with a square that is 100% K, but the opacity of the object is 50%. The object will only print 50% K, but Pitstop detects it as 100% K.
I have some test files, but I'm having a difficult time attaching them to the post, the AI file is less than 800KB but still won't upload.
Please refer to the attached PNG file. This is a screenshot of Acrobat's built-in Preflight Profile "List transparent objects." You can see that Acrobat detected a "constant alpha" on the fill that is less than 1.0. My test file contains two squares that are detected as having constant alphas less than 1.0: one with 100K and 50% opacity, the other 100K with 37% opacity.
It is possible to detect these objects with Acrobat's built-in tools, but I don't know how to detect the constant alpha of objects with Pitstop. The closest I have gotten is "Select objects that have a clipping path," which selects the proper squares... but I don't know how to select the content within the clipping paths, or check if the clipping path has a constant alpha less than 1.0.
Any ideas on how to detect constant alpha less than 1.0? Or any other suggestions?
The problem is Pitstop selects 100 K objects, regardless of their constant alpha. For example, we have a file built in Illustrator with a square that is 100% K, but the opacity of the object is 50%. The object will only print 50% K, but Pitstop detects it as 100% K.
I have some test files, but I'm having a difficult time attaching them to the post, the AI file is less than 800KB but still won't upload.
Please refer to the attached PNG file. This is a screenshot of Acrobat's built-in Preflight Profile "List transparent objects." You can see that Acrobat detected a "constant alpha" on the fill that is less than 1.0. My test file contains two squares that are detected as having constant alphas less than 1.0: one with 100K and 50% opacity, the other 100K with 37% opacity.
It is possible to detect these objects with Acrobat's built-in tools, but I don't know how to detect the constant alpha of objects with Pitstop. The closest I have gotten is "Select objects that have a clipping path," which selects the proper squares... but I don't know how to select the content within the clipping paths, or check if the clipping path has a constant alpha less than 1.0.
Any ideas on how to detect constant alpha less than 1.0? Or any other suggestions?