Refactor picking to use one thread per entity

Added triangle visitor by refactor the triangle volume extractor
Added ability to do a ray intersection with a single volume without using a thread
Added entity collector
Use one thread for each entity
Ignore entities that don’t have a pick object
Removed list of triangle volumes stored on each entity
Use triangle visitor to test each triangle by creating a single volume on the stack
Added triangle and 3 vertex index to the pick event

Change-Id: Id3fd53549bf3ea07805426ef868df174f30e176b
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/render/raycasting/qraycastingservice.cpp b/src/render/raycasting/qraycastingservice.cpp
index 0b183f087..f584e5f74 100644
--- a/src/render/raycasting/qraycastingservice.cpp
+++ b/src/render/raycasting/qraycastingservice.cpp
@@ -141,6 +141,19 @@ QCollisionQueryResult QRayCastingServicePrivate::collides(const Qt3DCore::QRay3D
     return result;
 }
 
+QCollisionQueryResult::Hit QRayCastingServicePrivate::collides(const Qt3DCore::QRay3D &ray, const Qt3DRender::QBoundingVolume *volume)
+{
+    QCollisionQueryResult::Hit result;
+    Hit hit = volumeRayIntersection(volume, ray);
+    if (hit.intersects)
+    {
+        result.m_distance = hit.distance;
+        result.m_entityId = hit.id;
+        result.m_intersection = hit.intersection;
+    }
+    return result;
+}
+
 QRayCastingServicePrivate::QRayCastingServicePrivate(const QString &description)
     : QAbstractCollisionQueryServicePrivate(description)
     , m_handlesCount(0)
@@ -170,6 +183,13 @@ QQueryHandle QRayCastingService::query(const Qt3DCore::QRay3D &ray,
     return handle;
 }
 
+QCollisionQueryResult::Hit QRayCastingService::query(const Qt3DCore::QRay3D &ray, const QBoundingVolume *volume)
+{
+    Q_D(QRayCastingService);
+
+    return d->collides(ray, volume);
+}
+
 QCollisionQueryResult QRayCastingService::fetchResult(const QQueryHandle &handle)
 {
     Q_D(QRayCastingService);