Radial color gradient not exported correctly in a PDF

[Shamoon]

Hello Affnity community,

I am new to AD and try to export a vector graphic with color gradients to PDF. I realized that elliptic color gradients are exported correctly while radial color gradients are not. I tried various export options and could only achieve a correct export after rasterizing the objects which in turn reduces the image resolution.. What am I missing? Is there an option during export which I need to enable/disable?

test gradient.afdesign

test gradient.pdf

Edited January 17, 2022 by Shamoon
additional attachment

[Alfred]

Welcome to the Serif Affinity Forums, @Shamoon.

If elliptical gradients work correctly for you but radial gradients don’t, why not simply use elliptical gradients throughout?

[Shamoon]

Hey Alfred,

Thank you for your reply 🙂 Yes, sure, that solution works charmingly well, but why should radial gradients cause a problem during export. I am asking because I want to be sure not to miss something important since I have just started learning the software.

[Old Bruce]

14 minutes ago, Shamoon said:

why should radial gradients cause a problem during export.

You made an Ellipse shape with a Radial Gradient, then you changed the shape of the ellipse and that distorted the Radial Gradient. For what ever reason the distortion is not exported. 

[Dan C]

Hi @Shamoon,

Welcome to the Affinity Forums & thanks for your report!

I can confirm that I've been able to replicate this issue with your document and therefore I'm getting this logged with our developers now.

I'm not 100% certain if the PDF specification supports this type of scale/shearing on gradients, so this may be the reason why the PDF is being exported in this way currently - however I do believe that Affinity could improve this behaviour (for example rasterising the gradient) so that it appears exactly as it does within the Affinity app, when exported.

I hope this helps