Currently, I am in the process of constructing a Cube using the standard new THREE.CubeGeometry method. I have adjusted the mesh's position (x,y,z) and successfully incorporated it into the scene. My next step involves drawing cubes in all six corners of the initial cube upon user interaction. How would I go about obtaining the coordinates for each vertex in the coordinate system?
A straightforward way to achieve this is:
let cubeGeometry = new THREE.CubeGeometry(...);
let verticesArray = cubeGeometry.vertices;
For those in search of 8 vertices or corners, you can find a demo at this link: http://jsfiddle.net/ebeit303/54uQ9/
function addShapes() {
width = 100;
height = 100
depth = 100;
var geometry = new THREE.CubeGeometry( width, height, depth );
var material = new THREE.MeshBasicMaterial({color:0xffccff, side:2, overdraw:true} );
mesh = new THREE.Mesh( geometry, material );
group.add( mesh );
mesh.position.set(10,20,20);
var x = mesh.position.x;
var y = mesh.position.y;
var z = mesh.position.z;
console.log(geometry.vertices);
var len = geometry.vertices.length;
for(var i = 0; i < len; i++){
var vx = geometry.vertices[i].x;
var vy = geometry.vertices[i].y;
var vz = geometry.vertices[i].z;
var material1 = new THREE.MeshBasicMaterial({color:Math.random()*0xffffff, side:2, overdraw:true, opacity:0.6, transparent:true} );
var mesh1 = new THREE.Mesh( geometry, material1 );
group.add(mesh1);
mesh1.position.set( (vx*2)+x,(vy*2)+y,(vz*2)+z);
}
}
This demonstration showcases a cube with 8 vertices/corners. Additional cubes are then created and positioned on each vertex of the central cube using basic geometric properties. The cubegeometry - geometry.vertices relationship and mesh positioning are key components of this simple calculation. Explore the jsfiddle link for a clearer understanding.
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