Enable applying of gradients and pattern on line segments

[stockiNail]

Fix #11204

[kurkle]

I think it should still return false if prevStyle is undefined. Also might be worth comparing the object instances for equality when its pattern or gradient

[stockiNail]

I think it should still return false if prevStyle is undefined.

You're right! I'll do

Also might be worth comparing the object instances for equality when its pattern or gradient

Ok, therefore scans the object properties checking if the values are equals. right?

[kurkle]

Thats what I was thinking. Maybe its ok to just check each property and not use JSON.stringify at all..

[stockiNail]

Maybe its ok to just check each property and not use JSON.stringify at all..

Fully agree. I'm busy now in a couple of other things. As soon as I'll finish, I'll change it and re-commit. I was checking before if there is already a helpers function which is doing that but I don't think so.

[stockiNail]

Maybe its ok to just check each property and not use JSON.stringify at all..

it sounds more complex than I expected... Let me propose another options using stringify.

[kurkle]

A map could be more efficient in these. But I'm not really worried about that. My main worry is a confusion between index in the array and some other possible numeric value, which is probably a non-issue really.

[stockiNail]

I was thinking to use a map but the array could contain max 4 objects.
Not clear about the confusion. The index is used only to compare a gradient/pattern. We needed a unique value per object instance to put in the json. It seemed to me better than a string or object.