How to find new coordinates by length and direction = Vector3(0, 0, 0)?

Questions
1

How to find the new coordinates of a point, knowing the initial coordinates, direction and length of the line that the point will move to.
I searched in the documentation, but found only such a complicated way: I create a camera, set the direction, move the camera forward by a length, determine the camera coordinates.
Maybe there is an easier way? Help me please.

Updated: Added a question about Vector3(0, 0, 0)

2 
final = start.add(direction.scale(distance))

where start is your initial coordinates as a Vector3, direction is a unit Vector3, if not already a unit vector do direction.normalize(), distance is the length of the line and final is the final coordinates as a Vector3;

If you are moving a mesh you can use translate, eg

mesh.translate(direction, distance, BABYLON.Space.WORLD);  //or
mesh.translate(direction, distance, BABYLON.Space.LOCAL);
3

Yes, thanks, move the mesh what I need, only the direction is Vector3(0, 0, 0) it doesn’t work
How to use direction = Vector3(0, 0, 0)?

4

Zero direction is no direction at all, so no movement.

It works if the direction is not zero

5

How then to move the mesh towards the origin of the coordinate axis (0,0,0) by a certain length?

6

Then (0, 0, 0) is not a direction it is a destination.

direction = destination.subtract(start).normalize(),

You need to find out more about position vectors verses direction vectors.

2 Likes
7

Thanks, this is what I need!