Cleanup source tree

Move all C++ source files in the src subfolder. Adapted the cmake process accordingly and cleanup.

src/CopyVisitor.cpp

@@ -0,0 +1,104 @@
+/*
+ * This file is part of vimix - Live video mixer
+ *
+ * **Copyright** (C) 2020-2021 Bruno Herbelin <bruno.herbelin@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+**/
+
+#include "GlmToolkit.h"
+#include "Scene.h"
+#include "Source.h"
+
+#include "CopyVisitor.h"
+
+Node *CopyVisitor::deepCopy(Node *node)
+{
+    CopyVisitor cv;
+    node->accept(cv);
+
+    return cv.current_;
+}
+
+CopyVisitor::CopyVisitor() : current_(nullptr)
+{
+
+}
+
+void CopyVisitor::visit(Node &n)
+{
+}
+
+void CopyVisitor::visit(Group &n)
+{
+    Group *here = new Group;
+
+    // node
+    current_ = here;
+    current_->copyTransform(&n);
+    current_->visible_ = n.visible_;
+
+    // loop
+    for (NodeSet::iterator node = n.begin(); node != n.end(); ++node) {
+        (*node)->accept(*this);
+
+        here->attach( current_ );
+
+        current_ = here;
+    }
+
+}
+
+void CopyVisitor::visit(Switch &n)
+{
+    Switch *here = new Switch;
+
+    // node
+    current_ = here;
+    current_->copyTransform(&n);
+    current_->visible_ = n.visible_;
+
+    // switch properties
+    here->setActive( n.active() );
+
+    // loop
+    for (uint i = 0; i < n.numChildren(); ++i) {
+        n.child(i)->accept(*this);
+
+        here->attach( current_ );
+
+        current_ = here;
+    }
+
+}
+
+void CopyVisitor::visit(Scene &n)
+{
+    Scene *here = new Scene;
+
+    current_ = here->root();
+    n.root()->accept(*this);
+}
+
+
+void CopyVisitor::visit(Primitive &n)
+{
+    Primitive *here = new Primitive;
+
+    // node
+    current_ = here;
+    current_->copyTransform(&n);
+    current_->visible_ = n.visible_;
+
+}