solved applyDisplacementMap on importedMesh?

[MarianG]

Hi.Short question
Can we apply displacementMap to an importedMesh? I'm already haveing bump map on material
I tried something, without succes. http://playground.babylonjs.com/#K2ES59

ps: I would like to have this feature. Thanks

 

[Sebavan]

To apply displacement map on a mesh the current code requires to have positions, normals and UVs. Or the skull is not having any UVs defined. 

As a workaround, you can add uvs manually, or take a mesh with uvs for your tests. I ll see if I can easily remove the UV restriction from the code.

[Sebavan]

Silliy me !!!

This can not work without UVs as we require uv to know where to fetch in the displacement map ?

Please, use a mesh which contains UVs to ensure it is working correctly.

[MarianG]

Hi @Sebavan. Thanks for info.
I tried, but it seems that all my meshes doesn't have set uvs, even if all of them have textures.
So in this case maybe I can set uv manually? But how?

[Sebavan]

You can use the function setVerticesData of the mesh to set any type of vertex data: https://www.babylonjs-playground.com/#15O3MB#5

[MarianG]

Ok, got it, http://playground.babylonjs.com/#K2ES59#1, no errors, but without effect too? Maybe wrong uv values?

[Sebavan]

Yes, your uvs are wrong and not the good length as you can see here: http://playground.babylonjs.com/#K2ES59#2 (looking at the  dev tools)

So creating uvs by code for random shapes is almost sorcellery and I would advise you to use a 3d modeler for this task or only use models with uvs.

I added some here just as an example: http://playground.babylonjs.com/#K2ES59#3

You can after easily use your displacement map: https://www.babylonjs-playground.com/#LYXHTH#11

Once you have all the required channels, you should be able to add your displacement map but you have to force update as loaded mesh are usually none updatable: http://playground.babylonjs.com/#K2ES59#6

 

 

[MarianG]

Huge!!!
Thanks @Sebavan
It works exactly as expected.

[MarianG]

Hi. I know I marked this as solved but I'm still missing something.  
I checked an object with 3ds max and it has uvs, 

but on babylonjs when looking for uv they are not there. I have to do something more for this getting this uv?
Thank you 

[Sebavan]

Could you share one of your .babylon file with me ?

[dogyear]

On 8/12/2018 at 1:55 AM, Sebavan said:

To apply displacement map on a mesh the current code requires to have positions, normals and UVs. Or the skull is not having any UVs defined. 

As a workaround, you can add uvs manually, or take a mesh with uvs for your tests. I ll see if I can easily remove the UV restriction from the code.

@Sebava

sorry for the weird message.  I messed up and accidentally hit enter

Edited October 6, 2018 by dogyear
accidentally hit enter XD

[dogyear]

@Sebavan I am having the same issue with my imported mesh.  My mesh definitely has normals and UVs, but I don't understand what you mean by, "...the code requires to have, position..."  This may be what I am missing.

[Sebavan]

@dogyear, are you sure it is related to this thread ?

If yes, could you remind me the context of the question ?

[dogyear]

@Sebavan I was actually alerted to this thread by another user, because I was having the same issue.  I am trying to apply a displacement map on an imported mesh, but have had no success.  I don't understand what I am doing wrong with regards to the applyDisplacementMap function.  I have tried the code snippet below.  I have also tried the same snippet and replacing the undefined with null, and I have omitted the last 4 paramters all together.  None of those solutions worked.  As another user wanted to make sure of on another thread, I confirmed that the mesh I am working with is indeed the correct mesh I am trying to apply the displacement map.  I have also checked the network tab and the correct displacement map image is being loaded.  It's just not reflected on the display.  I have also confirmed that my mesh has position, UVs, and normals, but I only know how to confirm them in blender.  In the console I can see my mesh has position, but I am unsure about UVs or normals.

 

BABYLON.SceneLoader.ImportMesh('', 'assets/models/island/', 'island.babylon', scene, function (newMeshes) {

var mesh = scene.getMeshByName('Island');

setTimeout(function(){

mesh.applyDisplacementMap('/assets/models/island/Sand_003_DISP.png', 0, 5, undefined, undefined, undefined, true);

}, 2000)

});

[Sebavan]

Oh I see, could you create a repro in the playground with your model I would would be way easier to troubleshoot ?

[Sebavan]

I just checked and it seems all should work so having your playground will definitely help, (my test was http://playground.babylonjs.com/#K2ES59#7)

[dogyear]

yea, sorry i'm taking so long.  I'm trying to figure out how to work the playground. I don't see where to upload my babylon file

[dogyear]

maybe you can take a look at the files generated by blender?

island.zip