Can you combine multiple meshes with different materials in Three.js?
After some research, I've discovered that existing solutions either merge the geometry only or simply place the Meshes together in a single Object3D or Group.
Can you combine multiple meshes with different materials in Three.js?
After some research, I've discovered that existing solutions either merge the geometry only or simply place the Meshes together in a single Object3D or Group.
Absolutely: Sort of (refer to the comments linked to both the question and this response):
var blueMat = new THREE.MeshPhongMaterial( {color: 0x0000FF } );
var redMat = new THREE.MeshPhongMaterial({ color:0xFF0000 });
var meshFaceMat = new THREE.MeshFaceMaterial( [ blueMat, redMat ] );
var cubeGeo = new THREE.BoxGeometry( 10, 10, 10 );
for ( var f in cubeGeo.faces ) {
cubeGeo.faces[ f ].materialIndex = 0;
}
var sphereGeo = new THREE.SphereGeometry( 5, 16, 16 );
sphereGeo.applyMatrix( new THREE.Matrix4().makeTranslation(0, 5, 0) );
var combinedGeo = new THREE.Geometry();
combinedGeo.merge( cubeGeo, cubeGeo.matrix );
combinedGeo.merge( sphereGeo, sphereGeo.matrix, 1 );
var meshObj = new THREE.Mesh( combinedGeo, meshFaceMat );
scene.add( meshObj );
I opted for a cube and sphere as an example because a box requires distinct material identifiers for its faces.
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