QAbstractMeshFunctor

Each QAbstractMesh class now has to implement a QAbstractMeshFunctor class.
When a mesh is set to dirty, the functor is sent through a QChangeArbiter
notification to the backend. The backend, using the functor can then rebuild
the mesh. There should be no issue if the frontend mesh is deleted while the
backend is creating the mesh as the functor has no direct reference to the
frontend element and contains all the data needed for a complete creation of
the mesh.

Change-Id: I4984f03a612e74c688bfb6cc2f19d9241b517457
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 16 insertions, 4 deletions

diff --git a/src/render/io/gltfparser.cpp b/src/render/io/gltfparser.cpp
index fa23b3ca2..431adb06c 100644
--- a/src/render/io/gltfparser.cpp
+++ b/src/render/io/gltfparser.cpp
@@ -965,14 +965,26 @@ GLTFParser::GLTFParserMesh::GLTFParserMesh(QNode *parent)
 {
 }
 
-bool GLTFParser::GLTFParserMesh::load()
+void GLTFParser::GLTFParserMesh::setData(MeshDataPtr data)
 {
-    return true;
+   m_meshData = data;
+   QAbstractMesh::setDirty(this);
 }
 
-void GLTFParser::GLTFParserMesh::setData(MeshDataPtr data)
+QAbstractMeshFunctorPtr GLTFParser::GLTFParserMesh::meshFunctor() const
+{
+    return QAbstractMeshFunctorPtr(new GLTFParserMesh::GLTFParserMeshFunctor(m_meshData));
+}
+
+GLTFParser::GLTFParserMesh::GLTFParserMeshFunctor::GLTFParserMeshFunctor(MeshDataPtr meshData)
+    : QAbstractMeshFunctor()
+    , m_meshData(meshData)
+{
+}
+
+QAbstractMeshDataPtr GLTFParser::GLTFParserMesh::GLTFParserMeshFunctor::operator ()()
 {
-    QAbstractMesh::setData(data.staticCast<QAbstractMeshData>());
+    return m_meshData;
 }
 
 } // of namespace Qt3D