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58 linhas
1.4 KiB
58 linhas
1.4 KiB
using UnityEngine;
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using System.Collections;
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using UnityEngine.UI;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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[RequireComponent(typeof(PolygonCollider2D))]
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[AddComponentMenu("UI/UIPolygon")]
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public class UIPolygon : Image
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{
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private PolygonCollider2D _polygon = null;
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private PolygonCollider2D polygon
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{
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get{
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if(_polygon == null )
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_polygon = GetComponent<PolygonCollider2D>();
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return _polygon;
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}
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}
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protected UIPolygon()
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{
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useLegacyMeshGeneration = true;
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}
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protected override void OnPopulateMesh(VertexHelper vh)
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{
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vh.Clear();
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}
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public override bool IsRaycastLocationValid(Vector2 screenPoint, Camera eventCamera)
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{
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return polygon.OverlapPoint( eventCamera.ScreenToWorldPoint(screenPoint));
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}
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#if UNITY_EDITOR
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protected override void Reset()
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{
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base.Reset();
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transform.localPosition = Vector3.zero;
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float w = (rectTransform.sizeDelta.x *0.5f) + 0.1f;
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float h = (rectTransform.sizeDelta.y*0.5f) + 0.1f;
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polygon.points = new Vector2[]
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{
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new Vector2(-w,-h),
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new Vector2(w,-h),
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new Vector2(w,h),
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new Vector2(-w,h)
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};
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}
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#endif
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}
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#if UNITY_EDITOR
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[CustomEditor(typeof(UIPolygon), true)]
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public class UIPolygonInspector : Editor
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{
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public override void OnInspectorGUI()
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{
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}
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}
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#endif
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