Unity C# - Raycasts, How to Ignore Triggers?

Question

Let's say I have a Raycast, but I don't want it to collide with any triggers. I don't want to change the Project settings since that's a little inflexible.

How can I have a Raycast ignore any triggers?

Answer 1

There is a (optional) parameter for that in Physics.RayCast which is available in Unity 5.2 and up:

public bool RaycastNoTriggers(Vector3 startPosition , Vector3 direction, float distance)
{
    Ray ray = new Ray(startPosition, direction);
    RaycastHit hit; 
    return Physics.Raycast(ray, out hit, distance, DefaultRaycastLayers, QueryTriggerInteraction.Ignore);

}

Answer 2

Select a tag to all triggers called "Ignore Raycast" this will make the Ray ignore the triggers and pass through.

Answer 3

public bool RaycastNoTriggers(Vector3 startPosition , Vector3 direction, float distance)
{
    Ray ray = new Ray(startPosition, direction);
    RaycastHit hit; 
    Physics.Raycast(ray, out hit, distance);
    if (hit.collider != null && !hit.collider.isTrigger) {
        return true; 
    }
    return false;

}