/// <summary>
/// 替换自定义射线
/// </summary>
public static void AddRay(ICustomRay ray)
{
if (!_rayList.Contains(ray))
{
_rayList.Add(ray);
Sort();
}
}
/// <summary>
/// Perform the raycast against the list of graphics associated with the Canvas.
/// </summary>
/// <param name="eventData">Current event data</param>
/// <param name="resultAppendList">List of hit objects to append new results to.</param>
public override void Raycast(PointerEventData eventData, List <RaycastResult> resultAppendList)
{
//<Ming> Modify : Canvas必不为空(若为空则为开发时异常!)，节省canvas判空消耗(UnityEngine.Object重载了==和!=)
//if (_canvas == null)
// return;
Camera cacheCamera = eventCamera;
var canvasGraphics = GraphicRegistry.GetGraphicsForCanvas(_canvas);
if (canvasGraphics == null || canvasGraphics.Count == 0)
{
return;
}
Vector2 eventPosition = eventData.position;
ICustomRay customRay = RayManager.CurrentRay;
if (customRay != null)
{
eventPosition = GetEventPosition(customRay.Ray, cacheCamera, eventData);
}
// Convert to view space
Vector2 pos;
if (cacheCamera == null)
{
float w = Screen.width;
float h = Screen.height;
pos = new Vector2(eventPosition.x / w, eventPosition.y / h);
}
else
{
pos = cacheCamera.ScreenToViewportPoint(eventPosition);
}
// If it's outside the camera's viewport, do nothing
if (pos.x < 0f || pos.x > 1f || pos.y < 0f || pos.y > 1f)
{
return;
}
Ray ray = cacheCamera.ScreenPointToRay(eventPosition);
_raycastResults.Clear();
float distance = 0;
Graphic graphic = Raycast(_canvas, cacheCamera, eventPosition, canvasGraphics, ray, out distance);
if (graphic != null)
{
var castResult = new RaycastResult
{
gameObject = graphic.gameObject,
module = this,
distance = distance,
screenPosition = eventPosition,
index = resultAppendList.Count,
depth = graphic.depth,
sortingLayer = _canvas.sortingLayerID,
sortingOrder = _canvas.sortingOrder,
worldPosition = ray.origin + ray.direction * distance,
worldNormal = -graphic.transform.forward
};
resultAppendList.Add(castResult);
}
}
/// <summary>
/// Hide the default proxy ray/cone
/// </summary>
/// <param name="rayOrigin">The ray to hide or show</param>
/// <param name="rayOnly">An optional parameter to hide or show only the ray</param>
public static void HideDefaultRay(this ICustomRay customRay, Transform rayOrigin, bool rayOnly = false)
{
hideDefaultRay(rayOrigin, rayOnly);
}
/// <summary>
/// 销毁当前自定义射线
/// </summary>
public static void RemoveRay(ICustomRay ray)
{
_rayList.Remove(ray);
}
