began draft of internal node rendering structure

app/node/keyframe.cpp

@@ -0,0 +1,59 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  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 <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "keyframe.h"
+
+NodeKeyframe::NodeKeyframe() :
+  time_(0),
+  value_(0),
+  type_(kLinear)
+{
+
+}
+
+const rational &NodeKeyframe::time()
+{
+  return time_;
+}
+
+void NodeKeyframe::set_time(const rational &time)
+{
+  time_ = time;
+}
+
+const QVariant &NodeKeyframe::value()
+{
+  return value_;
+}
+
+void NodeKeyframe::set_value(const QVariant &value)
+{
+  value_ = value;
+}
+
+const NodeKeyframe::Type &NodeKeyframe::type()
+{
+  return type_;
+}
+
+void NodeKeyframe::set_type(const NodeKeyframe::Type &type)
+{
+  type_ = type;
+}