Renderer Bounds

Unity Engine
1

Hello,

I am trying to calculate the bounds of a TextMesh so I can make it clickable and so far I have failed.

I have used all the possible combinations of renderer.bounds and none of them seems not even roughly accurate.

I even debug using gismos to see the result on screen with:

Vector3 center = renderer.bounds.center;
Gizmos.color = Color.white;
Gizmos.DrawWireCube(center, renderer.bounds.extents);
Gizmos.color = Color.yellow;
Gizmos.DrawWireCube(center, renderer.bounds.size);
Gizmos.color = Color.red;
Gizmos.DrawWireCube(center, renderer.bounds.min);
Gizmos.color = Color.green;
Gizmos.DrawWireCube(center, renderer.bounds.max);

and the yellow one looks like the best one but how can I use it… If we assume one of the above is OnScreenSize…

Vector3 touchPosition = Input.mousePosition;
Vector3 screenPosition = Camera.mainCamera.WorldToScreenPoint( transform.position );

if( screenPosition.x - ( OnScreenSize.x ) < touchPosition.x screenPosition.x + ( OnScreenSize.x ) > touchPosition.x screenPosition.y - ( OnScreenSize.y ) < touchPosition.y screenPosition.y + ( OnScreenSize.y ) > touchPosition.y )
{
isClicked = true;
}

2

If you want to make clickable object, there is a better way. You could use Physics.Raycast method.
See a little example from my project bellow:

void OnGUI()
    {
        Vector3 pos = Input.mousePosition;
        if (Camera.current != null)
        {
            Ray ray = Camera.current.ScreenPointToRay(pos);
            RaycastHit hit = new RaycastHit();

            if (Physics.Raycast(ray, out hit))
            {
                #if UNITY_EDITOR
                Debug.DrawRay(ray.origin, ray.direction * 25, Color.blue);
                #endif

                bool leftMouseButton = Input.GetMouseButton(0);
                bool rightMouseButton = Input.GetMouseButton(1);
                bool middleMouseButton = Input.GetMouseButton(2);

                if (leftMouseButton | rightMouseButton | middleMouseButton)
                {
                    GameObject hitObject = hit.collider.gameObject;
                    if (hitObject != null)
                    {
                        //Debug.Log("hit the "+hitObject.name);

                        if (leftMouseButton)
                            OnObjectLeftClicked(hitObject);

                        if (rightMouseButton)
                            OnObjectRightClicked(hitObject);

                        if (middleMouseButton)
                            OnObjectMiddleButtonClicked(hitObject);
                    }
                }
            }
        }
    }
3

Yeah but then I’ll have to create a collider for each textmesh

4

Any other methods anyone?

5

I think, there are not other methods.
Why you don’t want to create colliders?

6

What the collider creates for a TextMesh is essentially the same as renderer.bounds.size but it has to use the physics engine which is 1. unreliable in some cases 2. heavy so I am wondering how to actually do it using just those bounds instead but they seem to lose the proper center for some reason I have yet to understand