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I saw this Blender animation on Youtube showing a building walls grow into completion from the ground up:

https://www.youtube.com/watch?v=lNSdnzUH9IY

Does anyone know how to achieve this result? I have a building model, just have to show the walls rising up and covered with the ceiling.

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    $\begingroup$ maybe moving up booleans objects for the walls and increasing array count for the tiles? $\endgroup$
    – moonboots
    Nov 19, 2018 at 20:51

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For the walls you could use a Boolean modifier:

  • Create your walls.
  • Create an object that will mask your walls, like a cube.
  • Give your walls a Boolean modifier. Choose Operation > Difference and select your cube as Object.
  • To make the cube invisible, go in the Properties panel > Display > Maximum Draw Type > Wire, and in Cycles Settings, disable all the options.
  • Now when you move up or down the cube it will make your wall visible and invisible, you just have to put some keyframes.
  • Repeat the same operation for the other walls with new cubes.

For the roof :

  • Create an array of tiles, with or without an Array modifier.
  • Duplicate this array of tiles with a new Array modifier. Put some keyframes on the Count Value to display more and more tiles.

enter image description here

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  • $\begingroup$ Amazing! That does the trick! Thanks very much. $\endgroup$
    – Cyrus
    Nov 20, 2018 at 13:30

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