How to put an object in front of camera in THREE.JS?

Question

I\'m trying to put an object in front of the camera, but have not been able to.

I\'m using the FlyControls what moves the camera, and I now want to put an object in fron

Answer 1

var cx, cy, cz, lx, ly, lz;



dir.set(0,0,-1);
dir.applyAxisAngle(0,camera.rotation.x);
dir.applyAxisAngle(1,camera.rotation.y);
dir.applyAxisAngle(2,camera.rotation.z);
var dist = 100;

cx = camera.position.x;
cy = camera.position.y;
cz = camera.position.z;

lx = dir.x;
ly = dir.y;
lz = dir.z;


var l;

l = Math.sqrt((dist*dist)/(lx*lx+ly*ly+lz*lz));

var x1, x2;
var y1, y2;
var z1, z2;     

x1 = cx + lx*l;
x2 = cx - lx*l;

y1 = cy + ly*l;
y2 = cy - ly*l;

z1 = cz + lz*l;
z2 = cz - lz*l;


nanobot.position.set(x1, y1, z1 );

I tried to calculate the direction vector of the direction of the camera, and then calculate the line that passes through the chamber, put a point on this line at a distance from the camera