CODEWITHSUNDEEP
autodesk-forgeautodesk-viewerifc
FabianLinn
FabianLinn

Reputation: 57

Autodesk Forge Viewer: Change Texture in IFC Model

we run a webapplication using Autodesk Forge. In the webapplication we'd like to change surface apperances. Therefore we use the following Audodesk functions

...
event.fragIdsArray.forEach(frag => {
const model = this.viewer.model;
model.getFragmentList().setMaterial(frag, this.material)
var object = this.viewer.impl.getFragmentProxy(this.viewer.impl.model, frag)
object.updateAnimTransform()
}

The code works fine for Autodesk Revit imported model. Using imported IFC models does not work as expected. Both models were imported to the AD Forge viewer by ADs model derivate api.

To geht our expected results we tried to use MeshBasicMaterial and MeshPhongMaterial. Both with the same result: Revit model is fine, IFC model aint so.

In Order to lookup for some workaround we tried to copy the fragment meshes and creating overlays with the same mashes and changed materials. Code was like

...
var obj = this.viewer.impl.getRenderProxy(this.viewer.impl.model, frag)
var meshProxy = new THREE.Mesh(obj.geometry, this.material);
meshProxy.matrix.copy(obj.matrixWorld);
meshProxy.matrixWorldNeedsUpdate = true;
meshProxy.matrixAutoUpdate = false;
meshProxy.frustumCulled = false;
this.viewer.impl.addOverlay("parkett", meshProxy);
...

The result is shown in the image (right side is the expected result):

left side: Texture added to IFC. Right side: Same with rvt model

Somehow it looks like the image texture is not shown "detailed" enough...

Thanks in advance for any suggestion!

Upvotes: 0

Views: 477

Answers (1)

Petr Broz
Petr Broz

Reputation: 9942

From the question I'm not entirely sure what the problem is. Are there no visible changes when applying a custom material to IFC models? Or is the custom material applied, but in a "wrong way"?

If the custom material is not applied at all, make sure that the model is not consolidated. You can ensure that using viewer.model.unconsolidate();.

If the custom material is applied but its texture doesn't look correct, it could be because the geoemtries in the IFC model do not include proper texture coordinates. In that case you would have to map the texture yourself, for example, using a custom shader: https://github.com/petrbroz/forge-basic-app/blob/custom-texture-mapping/public/CustomTextureExtension.js.

Upvotes: 0

Related Questions