Hi i’d like some help if i needed to use a function to change each object color on press of buton? function multico() { scene.traverse( function( tested ) { for (let i=0; i<= tested.lengtht; i++){ console.log('tested'); }; so i got to use traverse to visit all…

In that case it means the material you’re trying to edit color of does not have a color (at least assuming you used the snippet above.) Instead of color.set simply assign a new THREE.Color (edited the snippet above to include that.)

for (let i=0; i<= tested.lengtht; i++){ to for (let i=0; i<= tested.length; i++){ function multico() scene.traverse(function(child){ if(child.isMesh && child.material.length==undefined){ child.material.color.set( Math.random() * 0xffffff ); } });

that’s a very subtle correction, if i may say so. You might have wanted to point out the initially wrong spelling of “length”, which had a surplus “t” at its end. I myself had to look more than twice until I realized that … :face_with_monocle:

that looks amazing, thanks for your 2 feedbacks.

ok i’m back i really’ve been searching on this, but why ’ child.material.color is undefined ’ when pressing my function function multico(child) { //change of colors random scene.traverse( function(child) { if(child.isMesh){ child.material.color.set( Math.random() * 0xffffff ); }}); }; maybe…

Maybe is array material not single

[image] Add children to a group break traverse method Questions Hi there! I would like to traverse the whole scene looking for a certain child (which is actually a grand-child) and then add it to another group in order to change its pivot point (it’s a door). Here’s my c…

as per this topic As per docs - you should not add / remove / modify any elements when using Object3D.traverse. If you need to do that - you can use children.forEach or save referenced to the elements you’d like to remove in an array outside of thetraverse callback. that i read here Cannot read …

maybe using ‘needsupdate’ see here GLB Replace mesh material on traverse with MeshPhysicalMaterial results in black mesh.material.needsUpdate = true;

[image] ADI3DXP: where is this technique children.foreach, documented? Here for example - it’s just a method of JavaScript arrays (acts pretty much the same as any for-loop, loops through the items in an array.)

Veery very cool. Will study this, thanks

Change colors problem

Questions

ADI3DXP January 2, 2025, 3:48pm 13

this looks very much the next step.

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Change colors problem

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