solved How to dynamically update the geometry of a mesh?

[leota]

I've created a BoxGeometry and assigned it to a Mesh, then when I click on the Mesh I would like to trigger an update of the geometry, for example change its "size" parameter. Is there a method I need to call on the Mesh to update it? I can see that the size property of the geometry gets updated, but the Mesh is still using the cached version.

This is probably an easy thing to do, but I'm struggling a bit as I'm very new to Babylon.

I've created a PG here: http://www.babylonjs-playground.com/#JTA9RH

Any help would be much appreciated

[brianzinn]

I haven't used geometries.  Will scaling on the box work for you?
http://www.babylonjs-playground.com/#JTA9RH#1

[leota]

12 minutes ago, brianzinn said:

I haven't used geometries.  Will scaling on the box work for you?
http://www.babylonjs-playground.com/#JTA9RH#1

mmh not really....I need to update geometry parameters. For example, if I use a CylinderGeometry I would need to change "diameterTop", so the scaling trick would not work.

[Guest]

Hello everything is here:

http://doc.babylonjs.com/how_to/how_to_dynamically_morph_a_mesh

Here is an example: https://www.babylonjs-playground.com/#1UZIZC#6

 

If you want to use pure shape functions, I recommend to directly use the MeshBuilder: http://www.babylonjs-playground.com/#JTA9RH#2

 

[leota]

4 minutes ago, Deltakosh said:

Hello everything is here:

http://doc.babylonjs.com/how_to/how_to_dynamically_morph_a_mesh

Here is an example: https://www.babylonjs-playground.com/#1UZIZC#6

 

If you want to use pure shape functions, I recommend to directly use the MeshBuilder: http://www.babylonjs-playground.com/#JTA9RH#2

 

Ok so basically I need to reassign the "mesh" variable to a newly created mesh. Thought there was a method to explicitly trigger a mesh update, but that's fine too. Thx!

[Guest]

There is (the one I used in the playground I mentioned) but it forces you to build the geometry manually. If you just want to recreate a new geometry, then this is the best way

[brianzinn]

if you don't want to recreate the mesh - here is a way with box as your first example.  boxes are easy, if you're using cylinders then it gets more involved:
http://www.babylonjs-playground.com/#JTA9RH#5

[leota]

Thanks, I need a solution that work on any kind of geometry, so recreating and reassigning the mesh seems to be the best solution so far.