API change material for another

Customization
1

Hello

Is it possible to change one material for another in an object, like the picker does but from the API with JavaScript?

2

Say, you would like to replace a material on meshes of type ‘wall’, to be ‘brick’.

First, before the scene is loaded, mark all materials and nodes that you need to use via API as editable:

var viewer = WALK.getViewer();
viewer.setNodeTypeEditable('wall');
viewer.setMaterialEditable('brick');

Then, at any time, but after the scene is loaded, find the required material and nodes and apply the change:

var brickMaterial = viewer.findMaterial('brick');
var nodes = viewer.findNodesOfType('wall');
for (var i = 0; i < nodes.length; ++i) {
    viewer.setMaterialForMesh(brickMaterial, nodes[i].mesh);
}
3

Hi @jan , thanks for your reply.

I already integrated the code in my test project, it enters the for loop, but visually I don’t see any change.
Is there anything else to add?

I attach reference images.

test
test511×535 33.8 KB

4

I found the detail, it was first put the material and then the mesh.

viewer.setMaterialForMesh(brickMaterial, nodes[i].mesh);

Now it works, thanks again @jan

1 Like
5

Sorry about this, I’m adding this correction to my original post.