84 lines
2.9 KiB
C#
84 lines
2.9 KiB
C#
using System.Collections.Generic;
|
|
using UnityEngine.UI;
|
|
|
|
namespace UnityEngine.EventSystems
|
|
{
|
|
/// <summary>
|
|
/// Simple event system using physics raycasts.
|
|
/// </summary>
|
|
[AddComponentMenu("Event/Physics 2D Raycaster")]
|
|
[RequireComponent(typeof(Camera))]
|
|
/// <summary>
|
|
/// Raycaster for casting against 2D Physics components.
|
|
/// </summary>
|
|
public class Physics2DRaycaster : PhysicsRaycaster
|
|
{
|
|
#if PACKAGE_PHYSICS2D
|
|
RaycastHit2D[] m_Hits;
|
|
#endif
|
|
|
|
protected Physics2DRaycaster()
|
|
{}
|
|
|
|
/// <summary>
|
|
/// Raycast against 2D elements in the scene.
|
|
/// </summary>
|
|
public override void Raycast(PointerEventData eventData, List<RaycastResult> resultAppendList)
|
|
{
|
|
#if PACKAGE_PHYSICS2D
|
|
Ray ray = new Ray();
|
|
float distanceToClipPlane = 0;
|
|
int displayIndex = 0;
|
|
if (!ComputeRayAndDistance(eventData, ref ray, ref displayIndex, ref distanceToClipPlane))
|
|
return;
|
|
|
|
int hitCount = 0;
|
|
|
|
if (maxRayIntersections == 0)
|
|
{
|
|
if (ReflectionMethodsCache.Singleton.getRayIntersectionAll == null)
|
|
return;
|
|
m_Hits = ReflectionMethodsCache.Singleton.getRayIntersectionAll(ray, distanceToClipPlane, finalEventMask);
|
|
hitCount = m_Hits.Length;
|
|
}
|
|
else
|
|
{
|
|
if (ReflectionMethodsCache.Singleton.getRayIntersectionAllNonAlloc == null)
|
|
return;
|
|
|
|
if (m_LastMaxRayIntersections != m_MaxRayIntersections)
|
|
{
|
|
m_Hits = new RaycastHit2D[maxRayIntersections];
|
|
m_LastMaxRayIntersections = m_MaxRayIntersections;
|
|
}
|
|
|
|
hitCount = ReflectionMethodsCache.Singleton.getRayIntersectionAllNonAlloc(ray, m_Hits, distanceToClipPlane, finalEventMask);
|
|
}
|
|
|
|
if (hitCount != 0)
|
|
{
|
|
for (int b = 0, bmax = hitCount; b < bmax; ++b)
|
|
{
|
|
var sr = m_Hits[b].collider.gameObject.GetComponent<SpriteRenderer>();
|
|
|
|
var result = new RaycastResult
|
|
{
|
|
gameObject = m_Hits[b].collider.gameObject,
|
|
module = this,
|
|
distance = Vector3.Distance(eventCamera.transform.position, m_Hits[b].point),
|
|
worldPosition = m_Hits[b].point,
|
|
worldNormal = m_Hits[b].normal,
|
|
screenPosition = eventData.position,
|
|
displayIndex = displayIndex,
|
|
index = resultAppendList.Count,
|
|
sortingLayer = sr != null ? sr.sortingLayerID : 0,
|
|
sortingOrder = sr != null ? sr.sortingOrder : 0
|
|
};
|
|
resultAppendList.Add(result);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
}
|