koobas.hobune.stream
ORBIT CAMERA ZOOM LIMIT
My script works fine, but i'd like to add the functionality of the zoom limit: i'm new in unity, so please speak basic :-)
using System.Collections; using System.Collections.Generic; using UnityEngine;
public class Move : MonoBehaviour { public Camera camera; public bool rotate; protected Plane plane; private void Awake() { if(camera == null) { camera = Camera.main; } }
private void Update()
{
if(Input.touchCount >= 1)
{
plane.SetNormalAndPosition(transform.up, transform.position);
}
var Delta1 = Vector3.zero;
var Delta2 = Vector3.zero;
if( Input.touchCount >= 1)
{
Delta1 = PlanePositionDelta(Input.GetTouch(0));
if ( Input. GetTouch(0).phase == TouchPhase.Moved)
{
camera.transform.Translate(Delta1, Space.World);
}
}
if (Input.touchCount >= 2)
{
var pos1 = PlanePosition(Input.GetTouch(0).position);
var pos2 = PlanePosition(Input.GetTouch(1).position);
var pos1b = PlanePosition(Input.GetTouch(0).position - Input.GetTouch(0).deltaPosition);
var pos2b = PlanePosition(Input.GetTouch(1).position - Input.GetTouch(1).deltaPosition);
var zoom = Vector3.Distance(pos1, pos2) / Vector3.Distance(pos1b, pos2b);
if (zoom == 0 || zoom > 10)
{
return;
}
camera.transform.position = Vector3.LerpUnclamped(pos1, camera.transform.position, 1 / zoom);
if(rotate && pos2b != pos2)
{
camera.transform.RotateAround(pos1, plane.normal, Vector3.SignedAngle(pos2 - pos1, pos2b - pos1b, plane.normal));
}
}
}
protected Vector3 PlanePosition(Vector2 screenPos)
{
var rayNow = camera.ScreenPointToRay(screenPos);
if (plane.Raycast(rayNow, out var enterNow))
{
return rayNow.GetPoint(enterNow);
}
return Vector3.zero;
}
protected Vector3 PlanePositionDelta(Touch touch)
{
if(touch.phase != TouchPhase.Moved)
{
return Vector3.zero;
}
var rayBefore = camera.ScreenPointToRay(touch.position - touch.deltaPosition);
var rayNow = camera.ScreenPointToRay(touch.position);
if(plane.Raycast(rayBefore, out var enterBefore) && plane.Raycast(rayNow, out var enterNow))
{
return rayBefore.GetPoint(enterBefore) - rayNow.GetPoint(enterNow);
}
return Vector3.zero;
}
}
