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I recreated Bradley's node tree of flipping book pages.

enter image description here

He is using several his own node-groups. One of them is Delay Fall-Off where I can delay start, but since I generate instances of final book it is applied to all instances of course.

enter image description here

  • How can I set delay per instance
  • How can I control delay by another object (Empty) or even better by value of procedural texture in place of instance.

Here is whole node tree ... enter image description here

I didn't fully understand the whole node-tree, I will need more time ... (or entire of my life :)

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  • $\begingroup$ Without putting in a lot of research. You can simply subtract some scaled value of the index of each instance from the value thats animating them. So find the value thats animating the books. Add a math subtract node there. Create an index node. Multiply that index value by some scale. Then connect that to the subtract node. $\endgroup$
    – TheJeran
    Commented Mar 30, 2022 at 9:12
  • $\begingroup$ If you mean this setup ... it still affects all instances. $\endgroup$
    – vklidu
    Commented Mar 30, 2022 at 14:18
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    $\begingroup$ @RobinBetts Sure, awesome result :) Cover control is welcomed (in the best it should be UV textured as well). Final goal is like table full of books animated as coming "wind" opening books from right to left on the table with a bit of randomness. Anim ends with open books on random page. Sure also random book thickness is welcomed too, but since it would be taken almost from top view current version can fake illusion too. GN are hard for me, so any step further is welcomed. Thanks :) $\endgroup$
    – vklidu
    Commented Apr 1, 2022 at 7:47
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    $\begingroup$ @quellenform etc. sorry for delay, busy, and it's a bit of a tangle. vklidu's extra requirements actually change it quite a lot, chiefly, to thicken the books and cover the spine? Here's the messy version without any concessions to being understood :(. Got to figure out how to make it a reasonable BSE answer. $\endgroup$
    – Robin Betts ♦
    Commented Apr 2, 2022 at 13:28
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    $\begingroup$ @RobinBetts, thanks for sharing! You are right: if you do the page flip after realizing the instances, it is possible this way. $\endgroup$
    – quellenform ♦
    Commented Apr 2, 2022 at 13:34

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