Legacy Documentation: Version 4.3.0
EditorGUILayout.Vector3Field
static function Vector3Field(label: string, value: Vector3, params options: GUILayoutOption[]): Vector3;
static function Vector3Field(label: GUIContent, value: Vector3, params options: GUILayoutOption[]): Vector3;
Parameters

label Label to display above the field.
value The value to edit.
options An optional list of layout options that specify extra layouting properties. Any values passed in here will override settings defined by the style.
See Also: GUILayout.Width, GUILayout.Height, GUILayout.MinWidth, GUILayout.MaxWidth, GUILayout.MinHeight, GUILayout.MaxHeight, GUILayout.ExpandWidth, GUILayout.ExpandHeight.
Returns
Vector3 The value entered by the user.
Description

Make an X, Y & Z field for entering a Vector3.


Measure the distance between 2 GameObjects or 2 positions in 3D space.
	// Simple Script that measures the distance between 2 GameObjects
	// or measure the distance between 2 positions in 3D space
	
	class EditorGUILayoutVector3Field extends EditorWindow {
		
		var distance : float = 0;
		var obj1 : Vector3;
		var obj2 : Vector3;
	
		@MenuItem("Examples/Measure Distance between 2 objects")
		static function Init() {
			var window = GetWindow(EditorGUILayoutVector3Field);
			window.Show();
		}
		function OnGUI() {
			GUILayout.Label("Select an object in the Hierarchy view and click 'Capture Position'");
			EditorGUILayout.BeginHorizontal();
				obj1 = EditorGUILayout.Vector3Field("GameObject 1:", obj1);
				if(GUILayout.Button("Capture Position"))
					obj1 = Selection.activeTransform.position;
			EditorGUILayout.EndHorizontal();
			
			EditorGUILayout.BeginHorizontal();
				obj2 = EditorGUILayout.Vector3Field("GameObject 2:", obj2);
				if(GUILayout.Button("Capture Position"))
					obj2 = Selection.activeTransform.position;
			EditorGUILayout.EndHorizontal();
			EditorGUILayout.LabelField("Distance:", distance.ToString());
			if(GUILayout.Button("Close"))
				this.Close();		
		}
		function OnInspectorUpdate() {
			distance = Vector3.Distance(obj1,obj2);
			this.Repaint();
		}
	}