Affinity Photo - When rasterize fill layer, gets wrong size

[suzylavor]

Hi guys,

I’m having a dificult time with Affinity Photo for iPad: I work with surface pattern design, and always need to create documents using cm and mm unit sizes instead of pixels. But when I create the document and rasterize the fill layer, it gets always the wrong number, causing my repeat files having lines in borders. I’ve attached a screenshot of a layer fill rasterized in a document of 150mm size. It shows 149.9mm, causing a pixel difference, that when repeated, causes thin lines and that’s not what I need. I’ve developed a set of amazing macros for designing patterns using Affinity Photo, but this issue is causing errors. Please, guys, have this checked. Thank you so much!

Suzy Lavor

[EmT]

Hi @suzylavor

When the layer is rasterised it will be done to full pixel values not mm. So unless the file is using full pixel files for the canvas size, the layer will be resized to a full pixel value. 
In the case where the canvas size is not a full pixel value, the layer will need to be resized after being rasterised.

For example a square document sizing of 150mm @ 300 DPI = 1771.7px, so a rasterised layer would be sized to 1771px.

[suzylavor]

I just don’t get why Affinity can’t round up those numbers as the other apps. This causes so much trouble, as when exporting artboards in Affinity Designer also. So the solution is always to create a pixels unit canvas? This is so much trouble as I don’t know how many pixels are in a document of 180mm, 200mm, that’s fabric sizes. Working for printing is different than screens, we don’t even speak about pixels 😅 Please, round up those numbers and everything would be fine 🙏🏻🙏🏻🙏🏻