Transforms position from screen space into world space.
Screenspace is defined in pixels. The bottom-left of the screen is (0,0); the right-top is (pixelWidth,pixelHeight). The z position is in world units from the camera.
// Convert the 2D position of the mouse into a // 3D position. Display these on the game window.
using UnityEngine;
public class ExampleClass : MonoBehaviour { private Camera cam;
void Start() { cam = Camera.main; }
void OnGUI() { Vector3 point = new Vector3(); Event currentEvent = Event.current; Vector2 mousePos = new Vector2();
// Get the mouse position from Event. // Note that the y position from Event is inverted. mousePos.x = currentEvent.mousePosition.x; mousePos.y = cam.pixelHeight - currentEvent.mousePosition.y;
point = cam.ScreenToWorldPoint(new Vector3(mousePos.x, mousePos.y, cam.nearClipPlane));
GUILayout.BeginArea(new Rect(20, 20, 250, 120)); GUILayout.Label("Screen pixels: " + cam.pixelWidth + ":" + cam.pixelHeight); GUILayout.Label("Mouse position: " + mousePos); GUILayout.Label("World position: " + point.ToString("F3")); GUILayout.EndArea(); } }
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