69 lines
1.9 KiB
C#
69 lines
1.9 KiB
C#
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.EventSystems;
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namespace SimpleInputNamespace
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{
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[RequireComponent( typeof( SimpleInputMultiDragListener ) )]
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public class AxisInputRotateGesture : MonoBehaviour, ISimpleInputDraggableMultiTouch
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{
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private const float MULTIPLIER = 180f / Mathf.PI;
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public SimpleInput.AxisInput axis = new SimpleInput.AxisInput();
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public float sensitivity = 0.25f;
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public bool clockwise = true;
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private SimpleInputMultiDragListener eventReceiver;
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public int Priority { get { return 2; } }
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private void Awake()
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{
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eventReceiver = GetComponent<SimpleInputMultiDragListener>();
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}
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private void OnEnable()
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{
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eventReceiver.AddListener( this );
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axis.StartTracking();
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}
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private void OnDisable()
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{
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eventReceiver.RemoveListener( this );
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axis.StopTracking();
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}
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public bool OnUpdate( List<PointerEventData> mousePointers, List<PointerEventData> touchPointers, ISimpleInputDraggableMultiTouch activeListener )
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{
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axis.value = 0f;
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if( activeListener != null && activeListener.Priority > Priority )
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return false;
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if( touchPointers.Count < 2 )
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{
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if( ReferenceEquals( activeListener, this ) && touchPointers.Count == 1 )
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touchPointers[0].pressPosition = touchPointers[0].position;
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return false;
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}
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PointerEventData touch1 = touchPointers[touchPointers.Count - 1];
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PointerEventData touch2 = touchPointers[touchPointers.Count - 2];
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Vector2 deltaPosition = touch2.position - touch1.position;
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Vector2 prevDeltaPosition = deltaPosition - ( touch2.delta - touch1.delta );
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float deltaAngle = ( Mathf.Atan2( prevDeltaPosition.y, prevDeltaPosition.x ) - Mathf.Atan2( deltaPosition.y, deltaPosition.x ) ) * MULTIPLIER;
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if( deltaAngle > 180f )
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deltaAngle -= 360f;
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else if( deltaAngle < -180f )
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deltaAngle += 360f;
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axis.value = clockwise ? deltaAngle * sensitivity : -deltaAngle * sensitivity;
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return true;
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}
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}
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}
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