[ObservationsEntity] fix type and casting

Author: almarouk

src/qmlAlembic/AlembicEntity.cpp

@@ -97,7 +97,7 @@ void AlembicEntity::updateObservations() const
 {
     for (auto* entity : _observations)
     {
-        entity->update(_viewId, _viewer2DInfo);
+        entity->update(static_cast<aliceVision::IndexT>(_viewId), _viewer2DInfo);
         if (entity->isEnabled() != _displayObservations)
             entity->setEnabled(_displayObservations);
     }
@@ -289,7 +289,7 @@ void AlembicEntity::visitAbcObject(const Alembic::Abc::IObject& iObj, QEntity* p
 
     std::vector<BaseAlembicObject*> entities = createEntities(iObj);
 
-    for (int j = 0; j < entities.size(); j++)
+    for (size_t j = 0; j < entities.size(); j++)
     {
         auto entity = entities[j];
         entity->setObjectName((iObj.getName() + std::to_string(j)).c_str());

src/qmlAlembic/AlembicEntity.hpp

@@ -49,7 +49,7 @@ class AlembicEntity : public Qt3DCore::QEntity
     Q_SLOT const QUrl& source() const { return _source; }
     Q_SLOT float pointSize() const { return _pointSize; }
     Q_SLOT float locatorScale() const { return _locatorScale; }
-    Q_SLOT float viewId() const { return _viewId; }
+    Q_SLOT int viewId() const { return _viewId; }
     Q_SLOT bool displayObservations() const { return _displayObservations; }
     Q_SLOT QVariantMap viewer2DInfo() const { return _viewer2DInfo; }
     Q_SLOT void setSource(const QUrl& source);