spine-runtimes/spine-unity/Assets/Examples/Scripts/Sample Components/Legacy/AtlasRegionAttacher.cs

/******************************************************************************
 * Spine Runtimes Software License v2.5
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 * Copyright (c) 2013-2016, Esoteric Software
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using UnityEngine;
using System.Collections.Generic;
using Spine;
using Spine.Unity.Modules.AttachmentTools;

namespace Spine.Unity.Modules {
	/// <summary>
	/// Example code for a component that replaces the default attachment of a slot with an image from a Spine atlas.</summary>
	public class AtlasRegionAttacher : MonoBehaviour {

		[System.Serializable]
		public class SlotRegionPair {
			[SpineSlot] public string slot;
			[SpineAtlasRegion] public string region;
		}

		[SerializeField] protected AtlasAsset atlasAsset;
		[SerializeField] protected bool inheritProperties = true;
		[SerializeField] protected List<SlotRegionPair> attachments = new List<SlotRegionPair>();

		Atlas atlas;

		void Awake () {
			var skeletonRenderer = GetComponent<SkeletonRenderer>();
			skeletonRenderer.OnRebuild += Apply;
			if (skeletonRenderer.valid) Apply(skeletonRenderer);
		}

		void Start () { } // Allow checkbox in inspector

		void Apply (SkeletonRenderer skeletonRenderer) {
			if (!this.enabled) return;

			atlas = atlasAsset.GetAtlas();
			float scale = skeletonRenderer.skeletonDataAsset.scale;

			foreach (var entry in attachments) {
				Slot slot = skeletonRenderer.Skeleton.FindSlot(entry.slot);
				Attachment originalAttachment = slot.Attachment;
				AtlasRegion region = atlas.FindRegion(entry.region);

				if (region == null) {
					slot.Attachment = null;
				} else if (inheritProperties && originalAttachment != null) {
					slot.Attachment = originalAttachment.GetRemappedClone(region, true, true, scale);
				} else {
					var newRegionAttachment = region.ToRegionAttachment(region.name, scale);
					slot.Attachment = newRegionAttachment;
				}
			}
		}
	}
}