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119 lines
4.5 KiB
119 lines
4.5 KiB
using System.Collections.Generic; |
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using UnityEngine.UI; |
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using UnityEngine.Rendering; |
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#if PACKAGE_TILEMAP |
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using UnityEngine.Tilemaps; |
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#endif |
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using UnityEngine.U2D; |
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namespace UnityEngine.EventSystems |
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{ |
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/// <summary> |
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/// Simple event system using physics raycasts. |
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/// </summary> |
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[AddComponentMenu("Event/Physics 2D Raycaster")] |
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[RequireComponent(typeof(Camera))] |
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/// <summary> |
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/// Raycaster for casting against 2D Physics components. |
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/// </summary> |
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public class Physics2DRaycaster : PhysicsRaycaster |
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{ |
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#if PACKAGE_PHYSICS2D |
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RaycastHit2D[] m_Hits; |
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#endif |
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protected Physics2DRaycaster() |
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{} |
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/// <summary> |
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/// Raycast against 2D elements in the scene. |
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/// </summary> |
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public override void Raycast(PointerEventData eventData, List<RaycastResult> resultAppendList) |
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{ |
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#if PACKAGE_PHYSICS2D |
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Ray ray = new Ray(); |
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float distanceToClipPlane = 0; |
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int displayIndex = 0; |
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if (!ComputeRayAndDistance(eventData, ref ray, ref displayIndex, ref distanceToClipPlane)) |
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return; |
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int hitCount = 0; |
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if (maxRayIntersections == 0) |
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{ |
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if (ReflectionMethodsCache.Singleton.getRayIntersectionAll == null) |
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return; |
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m_Hits = ReflectionMethodsCache.Singleton.getRayIntersectionAll(ray, distanceToClipPlane, finalEventMask); |
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hitCount = m_Hits.Length; |
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} |
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else |
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{ |
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if (ReflectionMethodsCache.Singleton.getRayIntersectionAllNonAlloc == null) |
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return; |
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if (m_LastMaxRayIntersections != m_MaxRayIntersections) |
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{ |
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m_Hits = new RaycastHit2D[maxRayIntersections]; |
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m_LastMaxRayIntersections = m_MaxRayIntersections; |
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} |
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hitCount = ReflectionMethodsCache.Singleton.getRayIntersectionAllNonAlloc(ray, m_Hits, distanceToClipPlane, finalEventMask); |
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} |
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if (hitCount != 0) |
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{ |
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for (int b = 0, bmax = hitCount; b < bmax; ++b) |
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{ |
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Renderer r2d = null; |
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// Case 1198442: Check for 2D renderers when filling in RaycastResults |
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var rendererResult = m_Hits[b].collider.gameObject.GetComponent<Renderer>(); |
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if (rendererResult != null) |
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{ |
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if (rendererResult is SpriteRenderer) |
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{ |
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r2d = rendererResult; |
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} |
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#if PACKAGE_TILEMAP |
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if (rendererResult is TilemapRenderer) |
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{ |
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r2d = rendererResult; |
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} |
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#endif |
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if (rendererResult is SpriteShapeRenderer) |
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{ |
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r2d = rendererResult; |
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} |
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} |
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var result = new RaycastResult |
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{ |
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gameObject = m_Hits[b].collider.gameObject, |
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module = this, |
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distance = Vector3.Distance(eventCamera.transform.position, m_Hits[b].point), |
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worldPosition = m_Hits[b].point, |
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worldNormal = m_Hits[b].normal, |
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screenPosition = eventData.position, |
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displayIndex = displayIndex, |
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index = resultAppendList.Count, |
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sortingGroupID = r2d != null ? r2d.sortingGroupID : SortingGroup.invalidSortingGroupID, |
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sortingGroupOrder = r2d != null ? r2d.sortingGroupOrder : 0, |
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sortingLayer = r2d != null ? r2d.sortingLayerID : 0, |
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sortingOrder = r2d != null ? r2d.sortingOrder : 0 |
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}; |
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if (result.sortingGroupID != SortingGroup.invalidSortingGroupID && |
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SortingGroup.GetSortingGroupByIndex(r2d.sortingGroupID) is SortingGroup sortingGroup) |
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{ |
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result.distance = Vector3.Distance(sortingGroup.transform.position, ray.origin); |
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result.sortingLayer = sortingGroup.sortingLayerID; |
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result.sortingOrder = sortingGroup.sortingOrder; |
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} |
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resultAppendList.Add(result); |
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} |
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} |
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#endif |
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} |
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} |
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}
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