dali/internal/event/events/hit-test-algorithm-impl.cpp

   1 /*
   2  * Copyright (c) 2022 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/event/events/hit-test-algorithm-impl.h>
  20
  21 // INTERNAL INCLUDES
  22 #include <dali/integration-api/debug.h>
  23 #include <dali/internal/event/actors/actor-impl.h>
  24 #include <dali/internal/event/actors/camera-actor-impl.h>
  25 #include <dali/internal/event/actors/layer-impl.h>
  26 #include <dali/internal/event/actors/layer-list.h>
  27 #include <dali/internal/event/common/projection.h>
  28 #include <dali/internal/event/events/ray-test.h>
  29 #include <dali/internal/event/render-tasks/render-task-impl.h>
  30 #include <dali/internal/event/render-tasks/render-task-list-impl.h>
  31 #include <dali/internal/event/rendering/renderer-impl.h>
  32 #include <dali/public-api/actors/layer.h>
  33 #include <dali/public-api/math/vector2.h>
  34 #include <dali/public-api/math/vector4.h>
  35
  36 namespace Dali
  37 {
  38 namespace Internal
  39 {
  40 namespace HitTestAlgorithm
  41 {
  42 namespace
  43 {
  44 struct HitActor
  45 {
  46   HitActor()
  47   : actor(nullptr),
  48     distance(std::numeric_limits<float>::max()),
  49     depth(std::numeric_limits<int>::min())
  50   {
  51   }
  52
  53   Actor*  actor;       ///< The actor hit (if actor is hit, then this is initialised).
  54   Vector2 hitPosition; ///< Position of hit (only valid if actor valid).
  55   float   distance;    ///< Distance from ray origin to hit actor.
  56   int32_t depth;       ///< Depth index of this actor.
  57 };
  58
  59 /**
  60  * Creates an Actor handle so that a HitTestFunction provided via the public API can be called.
  61  */
  62 struct HitTestFunctionWrapper : public HitTestInterface
  63 {
  64   /**
  65    * Constructor
  66    *
  67    * @param[in] func HitTestFunction to call with an Actor handle.
  68    */
  69   HitTestFunctionWrapper(Dali::HitTestAlgorithm::HitTestFunction func)
  70   : mFunc(func)
  71   {
  72   }
  73
  74   bool IsActorHittable(Actor* actor) override
  75   {
  76     return mFunc(Dali::Actor(actor), Dali::HitTestAlgorithm::CHECK_ACTOR);
  77   }
  78
  79   bool DescendActorHierarchy(Actor* actor) override
  80   {
  81     return mFunc(Dali::Actor(actor), Dali::HitTestAlgorithm::DESCEND_ACTOR_TREE);
  82   }
  83
  84   bool DoesLayerConsumeHit(Layer* layer) override
  85   {
  86     // Layer::IsTouchConsumed() focuses on touch only. Here we are a wrapper for the public-api
  87     // where the caller may want to check for something completely different.
  88     // TODO: Should provide a means to let caller decide. For now do not allow layers to consume
  89     return false;
  90   }
  91
  92   bool ActorRequiresHitResultCheck(Actor* actor, Integration::Point point, Vector2 hitPointLocal, uint32_t timeStamp) override
  93   {
  94     return actor->EmitHitTestResultSignal(point, hitPointLocal, timeStamp);
  95   }
  96
  97   Dali::HitTestAlgorithm::HitTestFunction mFunc;
  98 };
  99
 100 /**
 101  * Used in the hit-test algorithm to check whether the actor is touchable.
 102  * It is used by the touch event processor.
 103  */
 104 struct ActorTouchableCheck : public HitTestInterface
 105 {
 106   bool IsActorHittable(Actor* actor) override
 107   {
 108     return (actor->GetTouchRequired() || actor->GetInterceptTouchRequired() || actor->IsTouchFocusable()) && // Does the Application or derived actor type require a touch event or a intercept touch event? or focusable by touch?
 109            actor->IsHittable();                                                                              // Is actor sensitive, visible and on the scene?
 110   }
 111
 112   bool DescendActorHierarchy(Actor* actor) override
 113   {
 114     return actor->IsVisible() && // Actor is visible, if not visible then none of its children are visible.
 115            actor->IsSensitive(); // Actor is sensitive, if insensitive none of its children should be hittable either.
 116   }
 117
 118   bool DoesLayerConsumeHit(Layer* layer) override
 119   {
 120     return layer->IsTouchConsumed();
 121   }
 122
 123   bool ActorRequiresHitResultCheck(Actor* actor, Integration::Point point, Vector2 hitPointLocal, uint32_t timeStamp) override
 124   {
 125     if(point.GetState() != PointState::STARTED && actor->IsAllowedOnlyOwnTouch() && ownActor != actor)
 126     {
 127       return false;
 128     }
 129     return actor->EmitHitTestResultSignal(point, hitPointLocal, timeStamp);
 130   }
 131
 132   void SetOwnActor(const Actor* actor)
 133   {
 134     ownActor = actor;
 135   }
 136   const Actor* ownActor;
 137 };
 138
 139 /**
 140  * Check to see if the actor we're about to hit test is exclusively owned by another rendertask?
 141  */
 142 bool IsActorExclusiveToAnotherRenderTask(const Actor&                               actor,
 143                                          const RenderTask&                          renderTask,
 144                                          const RenderTaskList::ExclusivesContainer& exclusives)
 145
 146 {
 147   if(exclusives.size())
 148   {
 149     for(const auto& exclusive : exclusives)
 150     {
 151       if((exclusive.renderTaskPtr != &renderTask) && (exclusive.actor.GetActor() == &actor))
 152       {
 153         return true;
 154       }
 155     }
 156   }
 157   return false;
 158 }
 159
 160 /**
 161  * Recursively hit test all the actors, without crossing into other layers.
 162  * This algorithm performs a Depth-First-Search (DFS) on all Actors within Layer.
 163  * Hit-Testing each Actor, noting the distance from the Ray-Origin (3D origin
 164  * of touch vector). The closest Hit-Tested Actor is that which is returned.
 165  * Exceptions to this rule are:
 166  * - When comparing against renderable parents, if Actor is the same distance
 167  * or closer than it's renderable parent, then it takes priority.
 168  */
 169 HitActor HitTestWithinLayer(Actor&                                     actor,
 170                             const RenderTask&                          renderTask,
 171                             const RenderTaskList::ExclusivesContainer& exclusives,
 172                             const Vector4&                             rayOrigin,
 173                             const Vector4&                             rayDir,
 174                             const float&                               nearClippingPlane,
 175                             const float&                               farClippingPlane,
 176                             HitTestInterface&                          hitCheck,
 177                             const bool&                                overlayed,
 178                             bool&                                      overlayHit,
 179                             bool                                       layerIs3d,
 180                             const RayTest&                             rayTest,
 181                             const Integration::Point&                  point,
 182                             const uint32_t                             eventTime)
 183 {
 184   HitActor hit;
 185
 186   if(IsActorExclusiveToAnotherRenderTask(actor, renderTask, exclusives))
 187   {
 188     return hit;
 189   }
 190
 191   // For clipping, regardless of whether we have hit this actor or not.
 192   // This is used later to ensure all nested clipped children have hit
 193   // all clipping actors also for them to be counted as hit.
 194   bool clippingActor  = actor.GetClippingMode() != ClippingMode::DISABLED;
 195   bool overlayedActor = overlayed || actor.IsOverlay();
 196
 197   // If we are a clipping actor or hittable...
 198   if(clippingActor || hitCheck.IsActorHittable(&actor))
 199   {
 200     Vector3 size(actor.GetCurrentSize());
 201
 202     // Ensure the actor has a valid size.
 203     // If so, perform a quick ray sphere test to see if our ray is close to the actor.
 204     if(size.x > 0.0f && size.y > 0.0f && rayTest.SphereTest(actor, rayOrigin, rayDir))
 205     {
 206       Vector2 hitPointLocal;
 207       float   distance;
 208
 209       // Finally, perform a more accurate ray test to see if our ray actually hits the actor.
 210       if(rayTest.ActorTest(actor, rayOrigin, rayDir, hitPointLocal, distance))
 211       {
 212         // Calculate z coordinate value in Camera Space.
 213         const Matrix&  viewMatrix          = renderTask.GetCameraActor()->GetViewMatrix();
 214         const Vector4& hitDir              = Vector4(rayDir.x * distance, rayDir.y * distance, rayDir.z * distance, 0.0f);
 215         const float    cameraDepthDistance = (viewMatrix * hitDir).z;
 216
 217         // Check if cameraDepthDistance is between clipping plane
 218         if(cameraDepthDistance >= nearClippingPlane && cameraDepthDistance <= farClippingPlane)
 219         {
 220           if(overlayHit && !overlayedActor)
 221           {
 222             // If we have already hit an overlay and current actor is not an overlay ignore current actor.
 223           }
 224           else
 225           {
 226             if(overlayedActor)
 227             {
 228               overlayHit = true;
 229             }
 230
 231             // If the hit actor does not want to hit, the hit-test continues.
 232             if(hitCheck.ActorRequiresHitResultCheck(&actor, point, hitPointLocal, eventTime))
 233             {
 234               hit.actor       = &actor;
 235               hit.hitPosition = hitPointLocal;
 236               hit.distance    = distance;
 237               hit.depth       = actor.GetSortingDepth();
 238
 239               if(actor.GetRendererCount() > 0)
 240               {
 241                 //Get renderer with maximum depth
 242                 int rendererMaxDepth(actor.GetRendererAt(0).Get()->GetDepthIndex());
 243                 for(uint32_t i(1); i < actor.GetRendererCount(); ++i)
 244                 {
 245                   int depth = actor.GetRendererAt(i).Get()->GetDepthIndex();
 246                   if(depth > rendererMaxDepth)
 247                   {
 248                     rendererMaxDepth = depth;
 249                   }
 250                 }
 251                 hit.depth += rendererMaxDepth;
 252               }
 253             }
 254           }
 255         }
 256       }
 257     }
 258   }
 259
 260   // If current actor is clipping, and hit failed, We should not checkup child actors. Fast return
 261   if(clippingActor && !(hit.actor))
 262   {
 263     return hit;
 264   }
 265
 266   // Find a child hit, until we run out of actors in the current layer.
 267   HitActor childHit;
 268   if(actor.GetChildCount() > 0)
 269   {
 270     childHit.distance        = std::numeric_limits<float>::max();
 271     childHit.depth           = std::numeric_limits<int32_t>::min();
 272     ActorContainer& children = actor.GetChildrenInternal();
 273
 274     // Hit test ALL children and calculate their distance.
 275     bool parentIsRenderable = actor.IsRenderable();
 276
 277     for(ActorIter iter = children.begin(), endIter = children.end(); iter != endIter; ++iter)
 278     {
 279       // Descend tree only if...
 280       if(!(*iter)->IsLayer() &&                           // Child is NOT a layer, hit testing current layer only
 281          (hitCheck.DescendActorHierarchy((*iter).Get()))) // We can descend into child hierarchy
 282       {
 283         HitActor currentHit(HitTestWithinLayer((*iter->Get()),
 284                                                renderTask,
 285                                                exclusives,
 286                                                rayOrigin,
 287                                                rayDir,
 288                                                nearClippingPlane,
 289                                                farClippingPlane,
 290                                                hitCheck,
 291                                                overlayedActor,
 292                                                overlayHit,
 293                                                layerIs3d,
 294                                                rayTest,
 295                                                point,
 296                                                eventTime));
 297
 298         // Make sure the set hit actor is actually hittable. This is usually required when we have some
 299         // clipping as we need to hit-test all actors as we descend the tree regardless of whether they
 300         // are hittable or not.
 301         if(currentHit.actor && (!hitCheck.IsActorHittable(currentHit.actor)))
 302         {
 303           continue;
 304         }
 305
 306         bool updateChildHit = false;
 307         if(currentHit.distance >= 0.0f)
 308         {
 309           if(layerIs3d)
 310           {
 311             updateChildHit = ((currentHit.depth > childHit.depth) ||
 312                               ((currentHit.depth == childHit.depth) && (currentHit.distance < childHit.distance)));
 313           }
 314           else
 315           {
 316             updateChildHit = currentHit.depth >= childHit.depth;
 317           }
 318         }
 319
 320         if(updateChildHit)
 321         {
 322           if(!parentIsRenderable || currentHit.depth > hit.depth ||
 323              (layerIs3d && (currentHit.depth == hit.depth && currentHit.distance < hit.distance)))
 324           {
 325             childHit = currentHit;
 326           }
 327         }
 328       }
 329     }
 330   }
 331
 332   return (childHit.actor) ? childHit : hit;
 333 }
 334
 335 /**
 336  * Return true if actor is sourceActor or a descendent of sourceActor
 337  */
 338 bool IsWithinSourceActors(const Actor& sourceActor, const Actor& actor)
 339 {
 340   if(&sourceActor == &actor)
 341   {
 342     return true;
 343   }
 344
 345   Actor* parent = actor.GetParent();
 346   if(parent)
 347   {
 348     return IsWithinSourceActors(sourceActor, *parent);
 349   }
 350
 351   // Not within source actors
 352   return false;
 353 }
 354
 355 /**
 356  * Returns true if the layer and all of the layer's parents are visible and sensitive.
 357  */
 358 inline bool IsActuallyHittable(Layer& layer, const Vector2& screenCoordinates, const Vector2& stageSize, HitTestInterface& hitCheck)
 359 {
 360   bool hittable(true);
 361
 362   if(layer.IsClipping())
 363   {
 364     ClippingBox box = layer.GetClippingBox();
 365
 366     if(screenCoordinates.x < static_cast<float>(box.x) ||
 367        screenCoordinates.x > static_cast<float>(box.x + box.width) ||
 368        screenCoordinates.y < stageSize.y - static_cast<float>(box.y + box.height) ||
 369        screenCoordinates.y > stageSize.y - static_cast<float>(box.y))
 370     {
 371       // Not touchable if clipping is enabled in the layer and the screen coordinate is outside the clip region.
 372       hittable = false;
 373     }
 374   }
 375
 376   if(hittable)
 377   {
 378     Actor* actor(&layer);
 379
 380     // Ensure that we can descend into the layer's (or any of its parent's) hierarchy.
 381     while(actor && hittable)
 382     {
 383       if(!hitCheck.DescendActorHierarchy(actor))
 384       {
 385         hittable = false;
 386         break;
 387       }
 388       actor = actor->GetParent();
 389     }
 390   }
 391
 392   return hittable;
 393 }
 394
 395 /**
 396  * Gets the near and far clipping planes of the camera from which the scene is viewed in the render task.
 397  */
 398 void GetCameraClippingPlane(RenderTask& renderTask, float& nearClippingPlane, float& farClippingPlane)
 399 {
 400   CameraActor* cameraActor = renderTask.GetCameraActor();
 401   nearClippingPlane        = cameraActor->GetNearClippingPlane();
 402   farClippingPlane         = cameraActor->GetFarClippingPlane();
 403 }
 404
 405 /**
 406  * Hit test a RenderTask
 407  */
 408 bool HitTestRenderTask(const RenderTaskList::ExclusivesContainer& exclusives,
 409                        const Vector2&                             sceneSize,
 410                        LayerList&                                 layers,
 411                        RenderTask&                                renderTask,
 412                        Vector2                                    screenCoordinates,
 413                        Results&                                   results,
 414                        HitTestInterface&                          hitCheck,
 415                        const RayTest&                             rayTest)
 416 {
 417   if(renderTask.IsHittable(screenCoordinates))
 418   {
 419     Viewport viewport;
 420     renderTask.GetViewport(viewport);
 421     if(screenCoordinates.x < static_cast<float>(viewport.x) ||
 422        screenCoordinates.x > static_cast<float>(viewport.x + viewport.width) ||
 423        screenCoordinates.y < static_cast<float>(viewport.y) ||
 424        screenCoordinates.y > static_cast<float>(viewport.y + viewport.height))
 425     {
 426       // The screen coordinate is outside the viewport of render task. The viewport clips all layers.
 427       return false;
 428     }
 429
 430     float nearClippingPlane, farClippingPlane;
 431     GetCameraClippingPlane(renderTask, nearClippingPlane, farClippingPlane);
 432
 433     // Determine the layer depth of the source actor
 434     Actor* sourceActor(renderTask.GetSourceActor());
 435     if(sourceActor)
 436     {
 437       Dali::Layer layer(sourceActor->GetLayer());
 438       if(layer)
 439       {
 440         const uint32_t sourceActorDepth(layer.GetProperty<bool>(Dali::Layer::Property::DEPTH));
 441
 442         CameraActor* cameraActor     = renderTask.GetCameraActor();
 443         bool         pickingPossible = cameraActor->BuildPickingRay(
 444           screenCoordinates,
 445           viewport,
 446           results.rayOrigin,
 447           results.rayDirection);
 448         if(!pickingPossible)
 449         {
 450           return false;
 451         }
 452
 453         // Hit test starting with the top layer, working towards the bottom layer.
 454         HitActor hit;
 455         bool     overlayHit       = false;
 456         bool     layerConsumesHit = false;
 457
 458         for(int32_t i = layers.GetLayerCount() - 1; i >= 0 && !(hit.actor); --i)
 459         {
 460           Layer* layer(layers.GetLayer(i));
 461           overlayHit = false;
 462
 463           // Ensure layer is touchable (also checks whether ancestors are also touchable)
 464           if(IsActuallyHittable(*layer, screenCoordinates, sceneSize, hitCheck))
 465           {
 466             // Always hit-test the source actor; otherwise test whether the layer is below the source actor in the hierarchy
 467             if(sourceActorDepth == static_cast<uint32_t>(i))
 468             {
 469               // Recursively hit test the source actor & children, without crossing into other layers.
 470               hit = HitTestWithinLayer(*sourceActor,
 471                                        renderTask,
 472                                        exclusives,
 473                                        results.rayOrigin,
 474                                        results.rayDirection,
 475                                        nearClippingPlane,
 476                                        farClippingPlane,
 477                                        hitCheck,
 478                                        overlayHit,
 479                                        overlayHit,
 480                                        layer->GetBehavior() == Dali::Layer::LAYER_3D,
 481                                        rayTest,
 482                                        results.point,
 483                                        results.eventTime);
 484             }
 485             else if(IsWithinSourceActors(*sourceActor, *layer))
 486             {
 487               // Recursively hit test all the actors, without crossing into other layers.
 488               hit = HitTestWithinLayer(*layer,
 489                                        renderTask,
 490                                        exclusives,
 491                                        results.rayOrigin,
 492                                        results.rayDirection,
 493                                        nearClippingPlane,
 494                                        farClippingPlane,
 495                                        hitCheck,
 496                                        overlayHit,
 497                                        overlayHit,
 498                                        layer->GetBehavior() == Dali::Layer::LAYER_3D,
 499                                        rayTest,
 500                                        results.point,
 501                                        results.eventTime);
 502             }
 503
 504             // If this layer is set to consume the hit, then do not check any layers behind it
 505             if(hitCheck.DoesLayerConsumeHit(layer))
 506             {
 507               layerConsumesHit = true;
 508               break;
 509             }
 510           }
 511         }
 512
 513         if(hit.actor)
 514         {
 515           results.renderTask       = RenderTaskPtr(&renderTask);
 516           results.actor            = Dali::Actor(hit.actor);
 517           results.actorCoordinates = hit.hitPosition;
 518
 519           return true; // Success
 520         }
 521
 522         if(layerConsumesHit)
 523         {
 524           return true; // Also success if layer is consuming the hit
 525         }
 526       }
 527     }
 528   }
 529   return false;
 530 }
 531
 532 /**
 533  * Iterate through the RenderTaskList and perform hit testing.
 534  *
 535  * @param[in] sceneSize The scene size the tests will be performed in
 536  * @param[in] layers The list of layers to test
 537  * @param[in] taskList The list of render tasks
 538  * @param[out] results Ray information calculated by the camera
 539  * @param[in] hitCheck The hit testing interface object to use
 540  * @param[in] onScreen True to test on-screen, false to test off-screen
 541  * @return True if we have a hit, false otherwise
 542  */
 543 bool HitTestRenderTaskList(const Vector2&    sceneSize,
 544                            LayerList&        layers,
 545                            RenderTaskList&   taskList,
 546                            const Vector2&    screenCoordinates,
 547                            Results&          results,
 548                            HitTestInterface& hitCheck,
 549                            bool              onScreen)
 550 {
 551   RenderTaskList::RenderTaskContainer&                  tasks      = taskList.GetTasks();
 552   RenderTaskList::RenderTaskContainer::reverse_iterator endIter    = tasks.rend();
 553   const auto&                                           exclusives = taskList.GetExclusivesList();
 554   RayTest                                               rayTest;
 555
 556   for(RenderTaskList::RenderTaskContainer::reverse_iterator iter = tasks.rbegin(); endIter != iter; ++iter)
 557   {
 558     RenderTask& renderTask            = *iter->Get();
 559     const bool  isOffscreenRenderTask = renderTask.GetFrameBuffer();
 560     if((onScreen && isOffscreenRenderTask) || (!onScreen && !isOffscreenRenderTask))
 561     {
 562       // Skip to next task
 563       continue;
 564     }
 565     if(HitTestRenderTask(exclusives, sceneSize, layers, renderTask, screenCoordinates, results, hitCheck, rayTest))
 566     {
 567       // Return true when an actor is hit (or layer in our render-task consumes the hit)
 568       return true; // don't bother checking off screen tasks
 569     }
 570   }
 571
 572   return false;
 573 }
 574
 575 /**
 576  * Iterate through the RenderTaskList and perform hit testing for both on-screen and off-screen.
 577  *
 578  * @param[in] sceneSize The scene size the tests will be performed in
 579  * @param[in] layers The list of layers to test
 580  * @param[in] taskList The list of render tasks
 581  * @param[out] results Ray information calculated by the camera
 582  * @param[in] hitCheck The hit testing interface object to use
 583  * @param[in] onScreen True to test on-screen, false to test off-screen
 584  * @return True if we have a hit, false otherwise
 585  */
 586 bool HitTestForEachRenderTask(const Vector2&    sceneSize,
 587                               LayerList&        layers,
 588                               RenderTaskList&   taskList,
 589                               const Vector2&    screenCoordinates,
 590                               Results&          results,
 591                               HitTestInterface& hitCheck)
 592 {
 593   bool result = false;
 594
 595   // Check on-screen tasks before off-screen ones.
 596   // Hit test order should be reverse of draw order (see ProcessRenderTasks() where off-screen tasks are drawn first).
 597   if(HitTestRenderTaskList(sceneSize, layers, taskList, screenCoordinates, results, hitCheck, true) ||
 598      HitTestRenderTaskList(sceneSize, layers, taskList, screenCoordinates, results, hitCheck, false))
 599   {
 600     // Found hit.
 601     result = true;
 602   }
 603
 604   return result;
 605 }
 606
 607 } // unnamed namespace
 608
 609 HitTestInterface::~HitTestInterface() = default;
 610
 611 bool HitTest(const Vector2& sceneSize, RenderTaskList& taskList, LayerList& layerList, const Vector2& screenCoordinates, Dali::HitTestAlgorithm::Results& results, Dali::HitTestAlgorithm::HitTestFunction func)
 612 {
 613   bool wasHit(false);
 614   // Hit-test the regular on-scene actors
 615   Results                hitTestResults;
 616   HitTestFunctionWrapper hitTestFunctionWrapper(func);
 617   if(HitTestForEachRenderTask(sceneSize, layerList, taskList, screenCoordinates, hitTestResults, hitTestFunctionWrapper))
 618   {
 619     results.actor            = hitTestResults.actor;
 620     results.actorCoordinates = hitTestResults.actorCoordinates;
 621     wasHit                   = true;
 622   }
 623   return wasHit;
 624 }
 625
 626 bool HitTest(const Vector2& sceneSize, RenderTaskList& renderTaskList, LayerList& layerList, const Vector2& screenCoordinates, Results& results, HitTestInterface& hitTestInterface)
 627 {
 628   bool wasHit(false);
 629
 630   // Hit-test the regular on-scene actors
 631   if(!wasHit)
 632   {
 633     wasHit = HitTestForEachRenderTask(sceneSize, layerList, renderTaskList, screenCoordinates, results, hitTestInterface);
 634   }
 635   return wasHit;
 636 }
 637
 638 bool HitTest(const Vector2& sceneSize, RenderTaskList& renderTaskList, LayerList& layerList, const Vector2& screenCoordinates, Results& results, const Actor* ownActor)
 639 {
 640   ActorTouchableCheck actorTouchableCheck;
 641   actorTouchableCheck.SetOwnActor(ownActor);
 642   return HitTest(sceneSize, renderTaskList, layerList, screenCoordinates, results, actorTouchableCheck);
 643 }
 644
 645 } // namespace HitTestAlgorithm
 646
 647 } // namespace Internal
 648
 649 } // namespace Dali