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RaycastHit 
 Description 
 Structure used to get information back from a raycast. 
 Variables 
 barycentricCoordinate - The barycentric coordinate of the triangle we hit. 
 collider - The Collider that was hit. 
 distance - The distance from the ray's origin to the impact point. 
 lightmapCoord - The uv lightmap coordinate at the impact point. 
 normal - The normal of the surface the ray hit. 
 point - The impact point in world space where the ray hit the collider. 
 rigidbody - The Rigidbody of the collider that was hit. If the collider is not attached to a rigidbody then it is null. 
 textureCoord - The uv texture coordinate at the impact point. 
 textureCoord2 - The secondary uv texture coordinate at the impact point. 
 transform - The Transform of the rigidbody or collider that was hit. 
 triangleIndex - The index of the triangle that was hit.