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Answered

Transparency Masks and Patterns

Forum|Forum|4 years ago
December 1, 2021
3 replies
604 views

Can I create a pattern of random small blobs that I can use as a transperency mask?

Example I have a shape filled with a solid color or pattern, then I copy in place a duplicate of the shape and fill it with my blob pattern. I would like the blobs to act as a transparency mask to "cut holes" in the original underlying shape.

Or can I use a second fill on the original object that utilizes the blob pattern as a transparency mask?

Suggestions?

This topic has been closed for replies.

Correct answer Ton Frederiks

Group the objects first before applying the mask.

Ton Frederiks

Community Expert

You can also add a second fill to the object in the Appearance panel.

Give the top fill an opacity of 0%.

Select Knockout group for the combined appearance.

c.pfaffenbichler

Community Expert

F

fgwebbjrAuthor

Participant

I would like to see each individual circle within the pattern act as the mask ...not the entire rectangle containing the pattern.

Doug A Roberts

Community Expert

In that case tick 'Invert Mask'.

Ton Frederiks

Community Expert

You could use a seperate object filled with your blobs above your other object.

Select both and choose Make Mask in the Transparency panel (play with the Clip and Invert Mask checkboxes for the correct effect).

F

fgwebbjrAuthor

Participant

Close. I can do that for each individual object. However when I tried to apply to all of the objects in the layer simultaneous I could not get it to work.

Ton Frederiks

Correct answer

Community Expert

Group the objects first before applying the mask.

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