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Boolean on image not working correctly?


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Hi,

In Designer I place an image, convert to curves, draw a shape (rectangle) partially over the image, then do a geometry subtract. The operation works, except the image gets all distorted. I also noticed other Boolean operations have the same effect (result in distorted original image). Am I missing a step or doing something wrong? I know I can do this with masks, but I prefer to use the Boolean as it seems like it would be less steps (although would be even better if I didn't have to convert the image to curves first).

Thanks,

-Bill

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A boolean operation should not work on images.

Converting an image to curves does not turn it into a vector. A trace is required for that, which AD does not have.

Your technique turns an image into a vectorcontainer with a Bitmap Fill, which you can move around with the Fill Tool.

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18 minutes ago, wbdoll said:

I place an image, convert to curves

All you're doing is modifying the image boundary. You're not vectorising the image.

19 minutes ago, wbdoll said:

I know I can do this with masks

Best way.

Affinity Photo 2.0.3,  Affinity Designer 2.0.3, Affinity Publisher 2.0.3, Mac OSX 13, 2018 MacBook Pro 15" Intel.

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11 hours ago, wbdoll said:

Ok, I thought I had read somewhere that the way to boolean on an image was to turn it into curves.

Yes, you can do that, but currently there is a bug with the transformation matrix of the bitmap fill of the resulting shape, hence the incorrect fill of your result.

To work around that:

  1. before performing the Boolean operation, select only the lower object (the Curve object that originally was an Image object) and do Copy (cmd+c)
  2. do the Boolean operation
  3. with the resulting object selected, do Paste Style (shift+cmd+v) to give the correct fill to it
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