Raycast in 3D

Questions & Answers
1

I´m trying to adapt a script for pick up a object and drag it but i can´t figure out how can i pass it to 3d. The original script is for 2d:

Vector3 pos;
if(forTouchScreen)
pos = camera.ScreenToWorldPoint(Input.GetTouch(0).position);
	else
pos = camera.ScreenToWorldPoint(Input.mousePosition); 
pos.z = -1;
dragger.transform.position = pos;
RaycastHit2D  hit;
hit = Physics2D.Raycast(pos, Vector2.zero, Mathf.Infinity, layerMask);
if(!hitObject)
hitObject = hit.transform;

Can someone help??

4

RaycastHit hit;
Vector3pos = camera.ScreenToWorldPoint(Input.mousePosition);
if (Physics.Raycast (Vector3pos, -Vector3.up, out hit))
{

print(hit.collider.name);

}

Try this hope it will work

2

I think you need to check out this:

The above example takes the mouse position, which in your case will be ‘pos’, and changes it to a world position. Then use the resulting ray to pick the gameObject that you are clicking on.

3

It always give me error" Cannot implicitly convert typre “UnityEngine.ray to Unityengine.vector3”

Here is how i do:

Ray pos = camera.ScreenPointToRay(Input.mousePosition);
dragger.transform.position=ray;
RaycastHit hit;
if(Physics.Raycast(pos, out hit)
{

…

I try diferente ways but it’s always error!