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diff --git a/cinelerra-5.1/cinelerra/scenegraph.h b/cinelerra-5.1/cinelerra/scenegraph.h
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+/*
+ * CINELERRA
+ * Copyright (C) 2011 Adam Williams <broadcast at earthling dot net>
+ * 
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+
+
+#ifndef SCENEGRAPH_H
+#define SCENEGRAPH_H
+
+
+#include "affine.inc"
+#include "arraylist.h"
+#include "overlayframe.h"
+#include "vframe.h"
+
+
+// Main scene graph objects
+class SceneGraph;
+
+
+
+
+// Base class for all scene objects
+class SceneNode
+{
+public:
+	SceneNode();
+	SceneNode(const char *title);
+	SceneNode(VFrame *image, int private_image, float x, float y);
+	virtual ~SceneNode();
+
+	void append(SceneNode *node);
+	SceneNode* get_node(int number);
+	void reset();
+// Copy values & image pointer but not subnodes yet
+	void copy_ref(SceneNode *node);
+// Not recursive yet
+	int get_memory_usage();
+	virtual void dump(int indent);
+	void render(VFrame *frame, int do_camera);
+// 2D coordinate transformation
+	void transform_coord(
+		float *x, 
+		float *y, 
+		float *sx, 
+		float *sy, 
+		float *ry);
+	int get_flip();
+
+	ArrayList<SceneNode*> nodes;
+
+// for 2D
+	VFrame *image;
+	int private_image;
+
+// Move.  Only x & y are used in 2D.
+// x,y is the top left corner in 2D
+	float x, y, z;
+// Scale.  Only sx & sy are used in 2D
+	float sx, sy, sz;
+// Rotate in degrees.  Only ry is used in 2D
+	float rx, ry, rz;
+// causes x,y to be the top right corner in 2D
+	int flip;
+	int hidden;
+	char title[BCTEXTLEN];
+// Set in append()
+	SceneNode *parent;
+	SceneGraph *scene;
+};
+
+
+class SceneGraph : public VFrameScene
+{
+public:
+	SceneGraph();
+	virtual ~SceneGraph();
+
+	SceneNode* get_node(int number);
+	void append(SceneNode *node);
+	void append_camera(SceneNode *node);
+// Render 2D scene
+	void render(VFrame *frame, int cpus);
+	void dump();
+	void transform_camera(VFrame *frame, 
+		float *x, 
+		float *y, 
+		float *sx, 
+		float *sy, 
+		int flip);
+
+	
+	ArrayList<SceneNode*> nodes;
+	ArrayList<SceneNode*> cameras;
+	int current_camera;
+	AffineEngine *affine;
+	OverlayFrame *overlayer;
+	int cpus;
+};
+
+
+
+class SceneTransform : public SceneNode
+{
+public:
+	SceneTransform();
+	virtual ~SceneTransform();
+
+};
+
+
+
+class SceneLight : public SceneNode
+{
+public:
+	SceneLight();
+	virtual ~SceneLight();
+
+
+	double r, g, b;
+};
+
+
+class SceneCamera : public SceneNode
+{
+public:
+	SceneCamera();
+	virtual ~SceneCamera();
+
+	virtual void dump(int indent);
+
+// Top left of box to look at in 2D
+	double at_x, at_y, at_z;
+	double scale;
+};
+
+class SceneMaterial : public SceneNode
+{
+public:
+	SceneMaterial();
+	virtual ~SceneMaterial();
+
+	double r, g, b, a;
+	char *texture;
+	double s, t;
+};
+
+
+
+// Base class for shapes
+class SceneShape : public SceneNode
+{
+public:
+	SceneShape();
+	~SceneShape();
+
+// Pivot for shapes
+	double pivot_x, pivot_y, pivot_z;
+};
+
+
+
+class SceneCylinder : public SceneShape
+{
+public:
+	SceneCylinder();
+	virtual ~SceneCylinder();
+};
+
+class SceneSphere : public SceneShape
+{
+public:
+	SceneSphere();
+	virtual ~SceneSphere();
+};
+
+class SceneBox : public SceneShape
+{
+public:
+	SceneBox();
+	virtual ~SceneBox();
+};
+
+
+
+
+
+#endif
+
+
+