|
public static GetGraphicsForCanvas ( Canvas canvas ) : IList |
||
| canvas | Canvas | Input canvas. |
| Результат | IList |
|
private static void Raycast(Canvas canvas, Camera eventCamera, Vector2 pointerPosition, List <GameObject> results)
{
// Necessary for the event system
var foundGraphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
s_SortedGraphics.Clear();
for (int i = 0; i < foundGraphics.Count; ++i)
{
Graphic graphic = foundGraphics[i];
// -1 means it hasn't been processed by the canvas, which means it isn't actually drawn
if (graphic.depth == -1)
{
continue;
}
if (!RectTransformUtility.PointInRectangle(pointerPosition, graphic.rectTransform, eventCamera))
{
continue;
}
if (graphic.Raycast(pointerPosition, eventCamera))
{
s_SortedGraphics.Add(graphic);
}
}
s_SortedGraphics.Sort((g1, g2) => g2.depth.CompareTo(g1.depth));
for (int i = 0; i < s_SortedGraphics.Count; ++i)
{
results.Add(s_SortedGraphics[i].gameObject);
}
}
private static void Raycast(Canvas canvas, Camera eventCamera, Vector2 pointerPosition, List <Graphic> results)
{
IList <Graphic> graphicsForCanvas = GraphicRegistry.GetGraphicsForCanvas(canvas);
for (int i = 0; i < graphicsForCanvas.Count; i++)
{
Graphic graphic = graphicsForCanvas[i];
if (!graphic.canvasRenderer.cull)
{
if (graphic.depth != -1 && graphic.raycastTarget)
{
if (RectTransformUtility.RectangleContainsScreenPoint(graphic.rectTransform, pointerPosition, eventCamera))
{
if (graphic.Raycast(pointerPosition, eventCamera))
{
GraphicRaycaster.s_SortedGraphics.Add(graphic);
}
}
}
}
}
GraphicRaycaster.s_SortedGraphics.Sort((Graphic g1, Graphic g2) => g2.depth.CompareTo(g1.depth));
for (int j = 0; j < GraphicRaycaster.s_SortedGraphics.Count; j++)
{
results.Add(GraphicRaycaster.s_SortedGraphics[j]);
}
GraphicRaycaster.s_SortedGraphics.Clear();
}
private static void Raycast(Canvas canvas, Camera eventCamera, Vector2 pointerPosition, List <Graphic> results)
{
IList <Graphic> graphicsForCanvas = GraphicRegistry.GetGraphicsForCanvas(canvas);
for (int i = 0; i < graphicsForCanvas.Count; i++)
{
Graphic item = graphicsForCanvas[i];
if ((!item.canvasRenderer.cull && (item.depth != -1)) && ((item.raycastTarget && RectTransformUtility.RectangleContainsScreenPoint(item.rectTransform, pointerPosition, eventCamera)) && item.Raycast(pointerPosition, eventCamera)))
{
s_SortedGraphics.Add(item);
}
}
if (< > f__am$cache0 == null)
{
private static void Raycast(Canvas canvas, Camera eventCamera, Vector2 pointerPosition, List <Graphic> results)
{
IList <Graphic> graphicsForCanvas = GraphicRegistry.GetGraphicsForCanvas(canvas);
for (int index = 0; index < graphicsForCanvas.Count; ++index)
{
Graphic graphic = graphicsForCanvas[index];
if (graphic.depth != -1 && graphic.raycastTarget && (RectTransformUtility.RectangleContainsScreenPoint(graphic.rectTransform, pointerPosition, eventCamera) && graphic.Raycast(pointerPosition, eventCamera)))
{
GraphicRaycaster.s_SortedGraphics.Add(graphic);
}
}
GraphicRaycaster.s_SortedGraphics.Sort((Comparison <Graphic>)((g1, g2) => g2.depth.CompareTo(g1.depth)));
for (int index = 0; index < GraphicRaycaster.s_SortedGraphics.Count; ++index)
{
results.Add(GraphicRaycaster.s_SortedGraphics[index]);
}
GraphicRaycaster.s_SortedGraphics.Clear();
}
private static void Raycast(Canvas canvas, Camera eventCamera, Vector2 pointerPosition, List <Graphic> results)
{
// Debug.Log("ttt" + pointerPoision + ":::" + camera);
// Necessary for the event system
var foundGraphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
for (int i = 0; i < foundGraphics.Count; ++i)
{
Graphic graphic = foundGraphics[i];
if (graphic.canvasRenderer.cull)
{
continue;
}
// -1 means it hasn't been processed by the canvas, which means it isn't actually drawn
if (graphic.depth == -1 || !graphic.raycastTarget)
{
continue;
}
if (!RectTransformUtility.RectangleContainsScreenPoint(graphic.rectTransform, pointerPosition, eventCamera))
{
continue;
}
if (graphic.Raycast(pointerPosition, eventCamera))
{
s_SortedGraphics.Add(graphic);
}
}
s_SortedGraphics.Sort((g1, g2) => g2.depth.CompareTo(g1.depth));
// StringBuilder cast = new StringBuilder();
for (int i = 0; i < s_SortedGraphics.Count; ++i)
{
results.Add(s_SortedGraphics[i]);
}
// Debug.Log (cast.ToString());
s_SortedGraphics.Clear();
}
public override void Raycast(PointerEventData eventData, List <RaycastResult> resultAppendList)
{
if (canvas == null)
{
return;
}
var canvasGraphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
if (canvasGraphics == null || canvasGraphics.Count == 0)
{
return;
}
//是否支持 MultiDisplay
int displayIndex;
var currentEventCamera = eventCamera; // Propery can call Camera.main, so cache the reference
if (canvas.renderMode == RenderMode.ScreenSpaceOverlay || currentEventCamera == null)
{
displayIndex = canvas.targetDisplay;
}
else
{
displayIndex = currentEventCamera.targetDisplay;
}
var eventPosition = Display.RelativeMouseAt(eventData.position);
if (eventPosition != Vector3.zero)
{
// We support multiple display and display identification based on event position.
int eventDisplayIndex = (int)eventPosition.z;
// Discard events that are not part of this display so the user does not interact with multiple displays at once.
if (eventDisplayIndex != displayIndex)
{
return;
}
}
else
{
// The multiple display system is not supported on all platforms, when it is not supported the returned position
// will be all zeros so when the returned index is 0 we will default to the event data to be safe.
eventPosition = eventData.position;
// We dont really know in which display the event occured. We will process the event assuming it occured in our display.
}
// Convert to view space
Vector2 pos;
if (currentEventCamera == null)
{
// Multiple display support only when not the main display. For display 0 the reported
// resolution is always the desktops resolution since its part of the display API,
// so we use the standard none multiple display method. (case 741751)
float w = Screen.width;
float h = Screen.height;
if (displayIndex > 0 && displayIndex < Display.displays.Length)
{
w = Display.displays[displayIndex].systemWidth;
h = Display.displays[displayIndex].systemHeight;
}
pos = new Vector2(eventPosition.x / w, eventPosition.y / h);
}
else
{
pos = currentEventCamera.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;
}
float hitDistance = float.MaxValue;
Ray ray = new Ray();
if (currentEventCamera != null)
{
ray = currentEventCamera.ScreenPointToRay(eventPosition);
}
//通过两个属性来阻断射线检测部分；
if (canvas.renderMode != RenderMode.ScreenSpaceOverlay && blockingObjects != BlockingObjects.None)
{
float distanceToClipPlane = 100.0f;
if (currentEventCamera != null)
{
float projectionDirection = ray.direction.z;
distanceToClipPlane = Mathf.Approximately(0.0f, projectionDirection)
? Mathf.Infinity
: Mathf.Abs((currentEventCamera.farClipPlane - currentEventCamera.nearClipPlane) / projectionDirection);
}
if (blockingObjects == BlockingObjects.ThreeD || blockingObjects == BlockingObjects.All)
{
if (ReflectionMethodsCache.Singleton.raycast3D != null)
{
var hits = ReflectionMethodsCache.Singleton.raycast3DAll(ray, distanceToClipPlane, (int)m_BlockingMask);
if (hits.Length > 0)
{
hitDistance = hits[0].distance;
}
}
}
if (blockingObjects == BlockingObjects.TwoD || blockingObjects == BlockingObjects.All)
{
if (ReflectionMethodsCache.Singleton.raycast2D != null)
{
var hits = ReflectionMethodsCache.Singleton.getRayIntersectionAll(ray, distanceToClipPlane, (int)m_BlockingMask);
if (hits.Length > 0)
{
hitDistance = hits[0].distance;
}
}
}
}
m_RaycastResults.Clear();
Raycast(canvas, currentEventCamera, eventPosition, canvasGraphics, m_RaycastResults);
int totalCount = m_RaycastResults.Count;
for (var index = 0; index < totalCount; index++)
{
var go = m_RaycastResults[index].gameObject;
bool appendGraphic = true;
//将背向 Camera 的对象过滤掉
if (ignoreReversedGraphics)
{
//判断当前 Graphic 方向与正方向 Vector3.forward 是否相交
if (currentEventCamera == null)
{
// If we dont have a camera we know that we should always be facing forward
var dir = go.transform.rotation * Vector3.forward;
appendGraphic = Vector3.Dot(Vector3.forward, dir) > 0;
}
else
{
// If we have a camera compare the direction against the cameras forward.
var cameraFoward = currentEventCamera.transform.rotation * Vector3.forward;
var dir = go.transform.rotation * Vector3.forward;
appendGraphic = Vector3.Dot(cameraFoward, dir) > 0;
}
}
//检测 Distance
if (appendGraphic)
{
float distance = 0;
if (currentEventCamera == null || canvas.renderMode == RenderMode.ScreenSpaceOverlay)
{
distance = 0;
}
else
{
Transform trans = go.transform;
Vector3 transForward = trans.forward;
// http://geomalgorithms.com/a06-_intersect-2.html
distance = (Vector3.Dot(transForward, trans.position - ray.origin) / Vector3.Dot(transForward, ray.direction));
// Check to see if the go is behind the camera.
if (distance < 0)
{
continue;
}
}
if (distance >= hitDistance)
{
continue;
}
var castResult = new RaycastResult
{
gameObject = go,
module = this,
distance = distance,
screenPosition = eventPosition,
index = resultAppendList.Count,
depth = m_RaycastResults[index].depth,
sortingLayer = canvas.sortingLayerID,
sortingOrder = canvas.sortingOrder
};
resultAppendList.Add(castResult);
}
}
}
public override void Raycast(PointerEventData eventData, List <RaycastResult> resultAppendList)
{
if (!(this.canvas == null))
{
IList <Graphic> graphicsForCanvas = GraphicRegistry.GetGraphicsForCanvas(this.canvas);
if (graphicsForCanvas != null && graphicsForCanvas.Count != 0)
{
Camera eventCamera = this.eventCamera;
int targetDisplay;
if (this.canvas.renderMode == RenderMode.ScreenSpaceOverlay || eventCamera == null)
{
targetDisplay = this.canvas.targetDisplay;
}
else
{
targetDisplay = eventCamera.targetDisplay;
}
Vector3 vector = Display.RelativeMouseAt(eventData.position);
if (vector != Vector3.zero)
{
int num = (int)vector.z;
if (num != targetDisplay)
{
return;
}
}
else
{
vector = eventData.position;
}
Vector2 vector2;
if (eventCamera == null)
{
float num2 = (float)Screen.width;
float num3 = (float)Screen.height;
if (targetDisplay > 0 && targetDisplay < Display.displays.Length)
{
num2 = (float)Display.displays[targetDisplay].systemWidth;
num3 = (float)Display.displays[targetDisplay].systemHeight;
}
vector2 = new Vector2(vector.x / num2, vector.y / num3);
}
else
{
vector2 = eventCamera.ScreenToViewportPoint(vector);
}
if (vector2.x >= 0f && vector2.x <= 1f && vector2.y >= 0f && vector2.y <= 1f)
{
float num4 = 3.40282347E+38f;
Ray r = default(Ray);
if (eventCamera != null)
{
r = eventCamera.ScreenPointToRay(vector);
}
if (this.canvas.renderMode != RenderMode.ScreenSpaceOverlay && this.blockingObjects != GraphicRaycaster.BlockingObjects.None)
{
float f = 100f;
if (eventCamera != null)
{
float z = r.direction.z;
f = ((!Mathf.Approximately(0f, z)) ? Mathf.Abs((eventCamera.farClipPlane - eventCamera.nearClipPlane) / z) : float.PositiveInfinity);
}
if (this.blockingObjects == GraphicRaycaster.BlockingObjects.ThreeD || this.blockingObjects == GraphicRaycaster.BlockingObjects.All)
{
if (ReflectionMethodsCache.Singleton.raycast3D != null)
{
RaycastHit[] array = ReflectionMethodsCache.Singleton.raycast3DAll(r, f, this.m_BlockingMask);
if (array.Length > 0)
{
num4 = array[0].distance;
}
}
}
if (this.blockingObjects == GraphicRaycaster.BlockingObjects.TwoD || this.blockingObjects == GraphicRaycaster.BlockingObjects.All)
{
if (ReflectionMethodsCache.Singleton.raycast2D != null)
{
RaycastHit2D[] array2 = ReflectionMethodsCache.Singleton.getRayIntersectionAll(r, f, this.m_BlockingMask);
if (array2.Length > 0)
{
num4 = array2[0].distance;
}
}
}
}
this.m_RaycastResults.Clear();
GraphicRaycaster.Raycast(this.canvas, eventCamera, vector, graphicsForCanvas, this.m_RaycastResults);
int count = this.m_RaycastResults.Count;
int i = 0;
while (i < count)
{
GameObject gameObject = this.m_RaycastResults[i].gameObject;
bool flag = true;
if (this.ignoreReversedGraphics)
{
if (eventCamera == null)
{
Vector3 rhs = gameObject.transform.rotation * Vector3.forward;
flag = (Vector3.Dot(Vector3.forward, rhs) > 0f);
}
else
{
Vector3 lhs = eventCamera.transform.rotation * Vector3.forward;
Vector3 rhs2 = gameObject.transform.rotation * Vector3.forward;
flag = (Vector3.Dot(lhs, rhs2) > 0f);
}
}
if (flag)
{
float num5;
if (eventCamera == null || this.canvas.renderMode == RenderMode.ScreenSpaceOverlay)
{
num5 = 0f;
}
else
{
Transform transform = gameObject.transform;
Vector3 forward = transform.forward;
num5 = Vector3.Dot(forward, transform.position - eventCamera.transform.position) / Vector3.Dot(forward, r.direction);
if (num5 < 0f)
{
goto IL_4EE;
}
}
if (num5 < num4)
{
RaycastResult item = new RaycastResult
{
gameObject = gameObject,
module = this,
distance = num5,
screenPosition = vector,
index = (float)resultAppendList.Count,
depth = this.m_RaycastResults[i].depth,
sortingLayer = this.canvas.sortingLayerID,
sortingOrder = this.canvas.sortingOrder
};
resultAppendList.Add(item);
}
}
IL_4EE:
i++;
continue;
goto IL_4EE;
}
}
}
}
}
/// <summary>
/// Perform the raycast against the list of graphics associated with the Canvas.
/// GraphicRaycaster内围绕复写的基类的Raycast方法来展开（注意在GraphicRaycaster内部有另一个名为Raycast的私有静态方法，不要搞混）。
///
/// 整个函数代码很多，但是做的事情很简单，对于给定的PointerEventData，射线投射得出一些投射结果RaycastResult，
/// 追加到传入的参数List<RaycastResult>之后。
/// </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)
{
if (canvas == null)
{
return;
}
// 获取当前 Canvas 下所有的 Graphic(canvasGraphics，这些 Graphics 在进行射线检测的时候会用到)。
var canvasGraphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
if (canvasGraphics == null || canvasGraphics.Count == 0)
{
return;
}
int displayIndex;
var currentEventCamera = eventCamera; // Property can call Camera.main, so cache the reference
if (canvas.renderMode == RenderMode.ScreenSpaceOverlay || currentEventCamera == null)
{
//Canvas.targetDisplay => For Overlay mode, display index on which the UI canvas will appear.
displayIndex = canvas.targetDisplay;
}
else
{
displayIndex = currentEventCamera.targetDisplay;
}
// Display.RelativeMouseAt => Query relative mouse coordinates.
// RelativeMouseAt can be used to query relative mouse input coordinates and the screen in which Mouse Input is recorded.
// This is only valid on the Windows Desktop platforms with Multiple Displays.
// x, y returns the coordinates in relative space and z returns the screen in which Mouse Input is handled.
// Display.RelativeMouseAt(...)方法用于获取鼠标的相对位置，在PC平台下可能会有多个Display窗口，返回的z表示的是Display的id。
// 如果不支持多个Display则返回值的z为0，此时获取到的就是eventData.position；
var eventPosition = Display.RelativeMouseAt(eventData.position);
if (eventPosition != Vector3.zero)
{
// We support multiple display and display identification based on event position.
int eventDisplayIndex = (int)eventPosition.z;
// Discard events that are not part of this display so the user does not interact with multiple displays at once.
// 当平台支持 MultiDisplay 时，如果用户操作的不是当前的 Display，那么所有的其他 Display 上产生的事件都会被舍弃。
if (eventDisplayIndex != displayIndex)
{
return;
}
}
else
{
// The multiple display system is not supported on all platforms, when it is not supported the returned position
// will be all zeros so when the returned index is 0 we will default to the event data to be safe.
eventPosition = eventData.position;
// We dont really know in which display the event occured. We will process the event assuming it occured in our display.
}
// Convert to view space
// 获取正确的pos：将上一步的屏幕坐标eventPosition转换成ViewPort坐标pos，这里同样也处理了多Display的情况。
// 获取eventCamera不为null则直接调用相机的坐标转换方法ScreenToViewportPoint
Vector2 pos;
if (currentEventCamera == null)
{
// Multiple display support only when not the main display. For display 0 the reported
// resolution is always the desktops resolution since its part of the display API,
// so we use the standard none multiple display method. (case 741751)
float w = Screen.width;
float h = Screen.height;
if (displayIndex > 0 && displayIndex < Display.displays.Length)
{
w = Display.displays[displayIndex].systemWidth;
h = Display.displays[displayIndex].systemHeight;
}
pos = new Vector2(eventPosition.x / w, eventPosition.y / h);
}
else
{
pos = currentEventCamera.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;
}
// Distance from camera to target point.
// 获取正确的hitDistance：这里分别处理blockingObjects 为不同的枚举值时的情况（默认值为None）。
// hitDistance表示相机到投射目标点的距离。后边会根据这个距离值筛选掉一部分Graphic；
// m_BlockingMask是LayerMask用于按层筛选投射目标；
// 这里的ReflectionMethodsCache.Singleton.raycast3D这样的方法实际上调用的就是Physics.Raycast(...)方法
float hitDistance = float.MaxValue;
Ray ray = new Ray();
if (currentEventCamera != null)
{
// Camera.ScreenPointToRay => Returns a ray going from camera through a screen point.
// Resulting ray is in world space, starting on the near plane of the camera
// and going through position's (x,y) pixel coordinates on the screen (position.z is ignored).
// Screen space is defined in pixels. The bottom-left of the screen is (0,0); the right-top is (pixelWidth -1,pixelHeight -1).
ray = currentEventCamera.ScreenPointToRay(eventPosition);
}
// Canvas renderMode 不为 RenderMode.ScreenSpaceOverlay 并且设置了 blockingObjects，
// 此时就会 Blocked Objects 和 Blocked Mask 就会生效。
if (canvas.renderMode != RenderMode.ScreenSpaceOverlay && blockingObjects != BlockingObjects.None)
{
float distanceToClipPlane = 100.0f;
if (currentEventCamera != null)
{
float projectionDirection = ray.direction.z;
distanceToClipPlane = Mathf.Approximately(0.0f, projectionDirection)
? Mathf.Infinity
: Mathf.Abs((currentEventCamera.farClipPlane - currentEventCamera.nearClipPlane) / projectionDirection);
}
if (blockingObjects == BlockingObjects.ThreeD || blockingObjects == BlockingObjects.All)
{
if (ReflectionMethodsCache.Singleton.raycast3D != null)
{
// ReflectionMethodsCache.Singleton.raycast3D这样的方法实际上调用的就是Physics.Raycast(...)
// raycast3DAll 时指定了射线检测层 m_BlockingMask，这个参数就是自定义设定的 Blocking Mask，
// 属于 block mask 的对象在这里就会就行射线检测，并得到最小的一个 hitDistance；
// 后面对所有的 Graphics 进行射线检测时，如果检测结果 distance 大于 hitDistance，那么那个结果会被舍弃。
// 如此一来，Blocking Mask 就起到了阻挡的作用，属于这个 layer 的所有对象的一旦被射线检测成功并得到 hitDistance，
// PhysicsRaycaster 最后的射线检测结果都只会包含这个 hitDistance 距离以内的对象。
var hits = ReflectionMethodsCache.Singleton.raycast3DAll(ray, distanceToClipPlane, (int)m_BlockingMask);
if (hits.Length > 0)
{
hitDistance = hits[0].distance;
}
}
}
if (blockingObjects == BlockingObjects.TwoD || blockingObjects == BlockingObjects.All)
{
if (ReflectionMethodsCache.Singleton.raycast2D != null)
{
var hits = ReflectionMethodsCache.Singleton.getRayIntersectionAll(ray, distanceToClipPlane, (int)m_BlockingMask);
if (hits.Length > 0)
{
hitDistance = hits[0].distance;
}
}
}
}
m_RaycastResults.Clear();
Raycast(canvas, currentEventCamera, eventPosition, canvasGraphics, m_RaycastResults);
// 判断对应的GameObject是否有效appendGraphic，即是否继续处理追加该Graphic到射线投射结果的列表
int totalCount = m_RaycastResults.Count;
for (var index = 0; index < totalCount; index++)
{
var go = m_RaycastResults[index].gameObject;
bool appendGraphic = true;
// 如果ignoreReversedGraphics ，则只是追加朝向为正的Graphic
if (ignoreReversedGraphics)
{
if (currentEventCamera == null)
{
// If we dont have a camera we know that we should always be facing forward
var dir = go.transform.rotation * Vector3.forward;
appendGraphic = Vector3.Dot(Vector3.forward, dir) > 0;
}
else
{
// If we have a camera compare the direction against the cameras forward.
var cameraFoward = currentEventCamera.transform.rotation * Vector3.forward;
var dir = go.transform.rotation * Vector3.forward;
appendGraphic = Vector3.Dot(cameraFoward, dir) > 0;
}
}
if (appendGraphic)
{
float distance = 0;
Transform trans = go.transform;
Vector3 transForward = trans.forward;
if (currentEventCamera == null || canvas.renderMode == RenderMode.ScreenSpaceOverlay)
{
distance = 0;
}
else
{
// http://geomalgorithms.com/a06-_intersect-2.html
// 计算 Graphic 和 Camera 之间的向量在 Graphic 正方向上的投影以及计算射线方向在 Graphic 正方向上的投影，
// 两者相除就得到最终的 distance。
distance = (Vector3.Dot(transForward, trans.position - ray.origin) / Vector3.Dot(transForward, ray.direction));
// Check to see if the go is behind the camera.
if (distance < 0)
{
continue;
}
}
if (distance >= hitDistance)
{
continue;
}
var castResult = new RaycastResult
{
gameObject = go,
module = this,
distance = distance,
screenPosition = eventPosition,
index = resultAppendList.Count,
depth = m_RaycastResults[index].depth,
sortingLayer = canvas.sortingLayerID,
sortingOrder = canvas.sortingOrder,
worldPosition = ray.origin + ray.direction * distance,
worldNormal = -transForward
};
resultAppendList.Add(castResult);
}
}
}
/// <summary>
/// Perform a raycast into the screen and collect all graphics underneath it.
/// </summary>
private void Raycast(List <Canvas> canvases, Camera eventCamera, Vector2 pointerPosition, List <Graphic> results)
{
var workspaceTest = new Predicate <Graphic>( // Unity's original test, with modifications from voidALPHA to perform less intensive tests first
g => !g.raycastTarget ||
!RectTransformUtility.RectangleContainsScreenPoint(g.rectTransform, pointerPosition, eventCamera) ||
g.depth == -1 ||
!g.Raycast(pointerPosition, eventCamera)
);
var choreoTest = new Predicate <Graphic>( // Unity's original test, with modifications from voidALPHA to perform less intensive tests first
g => !g.raycastTarget ||
!RectTransformUtility.RectangleContainsScreenPoint(g.rectTransform, pointerPosition, null) ||
g.depth == -1 ||
!g.Raycast(pointerPosition, null)
);
foreach (var canvas in canvases)
{
AllWorkspaceGraphics.AddRange(GraphicRegistry.GetGraphicsForCanvas(canvas)); // Stick all graphics for canvas into list
}
if (ChoreoCanvas)
{
AllChoreoGraphics.AddRange(GraphicRegistry.GetGraphicsForCanvas(ChoreoCanvas));
}
if (AllWorkspaceGraphics.Count + AllChoreoGraphics.Count != LastKnownGraphicCount) // Graphics count changed
{
HierarchyCacheDictionary.Clear(); // Clear out cached dictionary and root graphic lists
RootWorkspaceGraphics.Clear();
RootChoreoGraphics.Clear();
if (SatelliteUpdateLord.Instance.NodesProcessing) // We're still processing nodes; perform slower non-cached tests while nodes come up.
// This provides raycast functionality while generating and is still faster than caching information every frame.
{
if (Choreography.Views.TimelineViewBehaviour.StepPicker.gameObject.activeInHierarchy ||
pointerPosition.y < Choreography.Views.TimelineViewBehaviour.Instance.CurrentHeight)
{
AllChoreoGraphics.RemoveAll(choreoTest);
foreach (var graphic in AllChoreoGraphics)
{
SortedGraphics.Add(graphic);
}
}
else if (ChainView.Instance.Visible)
{
AllWorkspaceGraphics.RemoveAll(workspaceTest);
foreach (var graphic in AllWorkspaceGraphics)
{
SortedGraphics.Add(graphic);
}
}
LastKnownGraphicCount = 0; // Zero out known Graphic count to force the Raycaster to attempt caching again on next raycast.
}
else
{
transformTester.Refresh(AllWorkspaceGraphics, transform);
foreach (var g in AllWorkspaceGraphics) // Not processing nodes, do a lot of work up front to improve later speed of calculations
{
HierarchyCacheDictionary[g] = new List <Graphic>(); // Initialize the list of Children for this Graphic
g.transform.GetComponentsInChildren(HierarchyCacheDictionary[g]); // Ask Unity for the list of Graphics under this Graphic, store it in the cache
var p = g.transform.parent;
if (transformTester.TestTransform(p)) // If no ancestor is a Graphic
{
RootWorkspaceGraphics.Add(g); // This Graphic will need to be among the first to be tested
}
}
transformTester.Refresh(AllChoreoGraphics, ChoreoCanvas.transform);
foreach (var g in AllChoreoGraphics) // Do the same for the Choreography Canvas
{
HierarchyCacheDictionary[g] = new List <Graphic>();
g.transform.GetComponentsInChildren(HierarchyCacheDictionary[g]);
var p = g.transform.parent;
if (transformTester.TestTransform(p))
{
RootChoreoGraphics.Add(g);
}
}
LastKnownGraphicCount = AllWorkspaceGraphics.Count + AllChoreoGraphics.Count;
}
}
// If we're working against cached graphic lists (ie nodes aren't currently being populated) prepare for the hierarchy-based test
var test = workspaceTest;
if (Choreography.Views.TimelineViewBehaviour.StepPicker.gameObject.activeInHierarchy || pointerPosition.y < Choreography.Views.TimelineViewBehaviour.Instance.CurrentHeight)
{ // Mouse is in the Choreography area, perform Choreography tests.
test = choreoTest;
foreach (var g in RootChoreoGraphics)
{
GraphicsToTest.Enqueue(g);
}
}
else if (ChainView.Instance.Visible)
{
foreach (var g in RootWorkspaceGraphics)
{
GraphicsToTest.Enqueue(g);
}
}
while (GraphicsToTest.Count > 0)
{
var g = GraphicsToTest.Dequeue();
if (SortedGraphics.Contains(g))
{
continue;
}
if (!test(g))
{
foreach (var gr in HierarchyCacheDictionary[g])
{
if (gr == g)
{
continue;
}
GraphicsToTest.Enqueue(gr);
}
SortedGraphics.Add(g);
}
}
var sgraphics = new List <Graphic>(SortedGraphics);
sgraphics.Sort((g1, g2) => g2.depth.CompareTo(g1.depth));
for (int i = 0; i < sgraphics.Count; ++i)
{
results.Add(sgraphics[i]);
}
// Ready the lists for the next run.
AllWorkspaceGraphics.Clear();
AllChoreoGraphics.Clear();
SortedGraphics.Clear();
}