Removed remaining dependancies on osg::Camera.

include/osgGA/MatrixManipulator

@@ -0,0 +1,102 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library 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 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#ifndef OSGGA_MatrixManipulator
+#define OSGGA_MatrixManipulator 1
+
+#include <osg/Node>
+#include <osg/Matrix>
+
+#include <osgUtil/SceneView>
+
+#include <osgGA/Export>
+#include <osgGA/GUIEventHandler>
+#include <osgGA/GUIEventAdapter>
+#include <osgGA/GUIActionAdapter>
+
+namespace osgGA{
+
+/**
+
+MatrixManipulator is an abstract base class defining the interface, and a certain
+amount of default functionality, for classes which wish to control OSG cameras
+in response to GUI events.
+
+*/
+class OSGGA_EXPORT MatrixManipulator : public GUIEventHandler
+{
+public:
+
+
+        virtual const char* className() const { return "MatrixManipulator"; }
+
+        /** set the position of the matrix manipulator using a 4x4 Matrix.*/
+        virtual void setByMatrix(const osg::Matrix& matrix) = 0;
+
+        /** set the position of the matrix manipulator using a 4x4 Matrix.*/
+        virtual void setByInverseMatrix(const osg::Matrix& matrix) = 0;
+
+        /** get the position of the manipulator as 4x4 Matrix.*/
+        virtual osg::Matrix getMatrix() const = 0;
+
+        /** get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix.*/
+        virtual osg::Matrix getInverseMatrix() const = 0;
+
+        /** Get the FusionDistanceMode. Used by SceneView for setting up setereo convergence.*/
+        virtual osgUtil::SceneView::FusionDistanceMode getFusionDistanceMode() const { return osgUtil::SceneView::PROPORTIONAL_TO_SCREEN_DISTANCE; }
+
+        /** Get the FusionDistanceValue. Used by SceneView for setting up setereo convergence.*/
+        virtual float getFusionDistanceValue() const { return 1.0f; }
+
+
+        /**
+        Attach a node to the manipulator, automatically detaching any previously attached node.
+        setNode(NULL) detaches previous nodes.
+        May be ignored by manipulators which do not require a reference model.
+        */
+        virtual void setNode(osg::Node*) {}
+
+        /** Return const node if attached.*/
+        virtual const osg::Node* getNode() const { return NULL; }
+
+        /** Return node if attached.*/
+        virtual osg::Node* getNode() { return NULL; }
+
+        /**
+        Move the camera to the default position. 
+        May be ignored by manipulators if home functionality is not appropriate.
+        */
+        virtual void home(const GUIEventAdapter& ,GUIActionAdapter&) {}
+
+        /**
+        Start/restart the manipulator.
+        FIXME: what does this actually mean? Provide examples.
+        */
+        virtual void init(const GUIEventAdapter& ,GUIActionAdapter&) {}
+
+        /** Handle events, return true if handled, false otherwise. */
+        virtual bool handle(const GUIEventAdapter& ea,GUIActionAdapter& us);
+
+        /** Handle visitations */
+        virtual void accept(GUIEventHandlerVisitor& v)    { v.visit(*this); }
+
+protected:
+
+        MatrixManipulator();
+        virtual ~MatrixManipulator();
+
+};
+
+}
+
+#endif