How to implement the fabric customization functionality (visual display of different colors, shapes, patterns)?

Question

infographics

Hello!
A friend undertook to make a bed linen store to order. Wants to implement functionality similar to the functionality on this site .
Please tell me where to turn your eyes in order to qualitatively resolve this issue.
I would be very grateful for the advice. Now I don't even know where to look.

Answer 1

Here was a very similar question, see the answers.
How to get 10 identical drawings (jpg/png) in different colors with gradient?
The point is that you can try to do all this on the server, or even on the client. Make some kind of mask, with contours and shadows, and so on. Substitute a picture with the desired color or even a background under it.