| guiPoint | A point in GUI space. | 
| vertex | The nearest vertex position to guiPoint, or a default value if no vertex is within the minimum picking distance. | 
| objectsToSearch | An array of Transform to consider when picking the nearest vertex. If null, all active objects in open scenes are considered. | 
| objectsToIgnore | An array of Transform to exclude from consideration when picking nearest vertex. | 
| gameObject | The GameObject that contains the nearest vertex found by this function. Null if no vertex was found. | 
bool Returns true if a vertex within 50 pixels of the guiPoint was found, false if no vertex found within the minimum picking radius.
Returns the nearest vertex to a guiPoint within a maximum radius of 50 pixels.