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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
namespace XNode.Examples.RuntimeMathNodes {
public class NodeDrag : MonoBehaviour, IPointerClickHandler, IBeginDragHandler, IDragHandler, IEndDragHandler {
private Vector3 offset;
private UGUIMathBaseNode node;
private void Awake() {
node = GetComponentInParent<UGUIMathBaseNode>();
}
public void OnDrag(PointerEventData eventData) {
node.transform.localPosition = node.graph.scrollRect.content.InverseTransformPoint(eventData.position) - offset;
}
public void OnBeginDrag(PointerEventData eventData) {
Vector2 pointer = node.graph.scrollRect.content.InverseTransformPoint(eventData.position);
Vector2 pos = node.transform.localPosition;
offset = pointer - pos;
}
public void OnEndDrag(PointerEventData eventData) {
node.transform.localPosition = node.graph.scrollRect.content.InverseTransformPoint(eventData.position) - offset;
Vector2 pos = node.transform.localPosition;
pos.y = -pos.y;
node.node.position = pos;
}
public void OnPointerClick(PointerEventData eventData) {
if (eventData.button != PointerEventData.InputButton.Right)
return;
node.graph.nodeContextMenu.selectedNode = node.node;
node.graph.nodeContextMenu.OpenAt(eventData.position);
}
}
}
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