110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
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# ifndef SR_SCENE_MANIPULATOR_H
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# define SR_SCENE_MANIPULATOR_H
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/** \file sr_scene.h
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* basic scene elements
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*/
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# include "sr_quat.h"
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# include "sr_plane.h"
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# include "sr_sn_editor.h"
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# include "sr_sn_shape.h"
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# include "sr_polygons.h"
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class SrBox;
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class SrLines;
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class SrSphere;
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//==================================== SrSnManipulator ====================================
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/*! \class SrSnManipulator sr_sn_manipulator.h
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\brief edit polygons
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SrSnManipulator puts a bounding box around the child object and lets
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the user manipulate the box, updating the transformation matrix
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accordingly. */
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class SrSnManipulator : public SrSnEditor
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{ public :
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enum Mode { ModeWaiting, ModeTranslating, ModeRotating };
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static const char* class_name;
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private :
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Mode _mode;
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SrSnBox* _box;
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SrSnLines* _dragsel;
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SrPnt _firstp; // 1st pt selected (center of the blue cross)
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int _corner;
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SrPnt _bside[4];
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SrPlane _plane;
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SrMat _initmat;
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SrQuat _rotation; // local rot after _initmat
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SrVec _translation; // local transl after _initmat
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float _rx, _ry, _rz;
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SrPnt _center;
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float _radius;
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float _precision_in_pixels;
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void (*_user_cb) ( SrSnManipulator*, const SrEvent&, void* );
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void* _user_cb_data;
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bool _translationray;
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protected :
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/*! Destructor only accessible through unref() */
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virtual ~SrSnManipulator ();
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public :
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/*! Constructor */
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SrSnManipulator ();
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/*! Defines the child node */
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void child ( SrSn* sn );
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/*! Retrieves the child node */
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SrSn* child () const { return SrSnEditor::child(); }
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/*! Get a reference to the manipulator matrix. */
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SrMat& mat () { return SrSnEditor::mat(); }
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/*! Set a initial matrix to the manipulator. This matrix will be saved
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and all manipulations performed will be combined to it.
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Note: the final transformation is obtained with mat() */
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void initial_mat ( const SrMat& m );
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/*! Put into waiting mode, ie, no selections appearing */
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void init ();
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/*! To be called to update the manipulation box */
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void update ();
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/*! Set a user callback that is called each time an event is processed
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by the manipulator */
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void callback ( void(*cb)(SrSnManipulator*,const SrEvent&,void*), void* udata )
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{ _user_cb=cb; _user_cb_data=udata; }
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/*! Returns the associated callback data */
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void* user_cb_data () const { return _user_cb_data; }
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/*! Set the translation DOFs */
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void translation ( const SrVec& t );
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/*! Returns the translation DOFs */
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SrVec translation () const { return _translation; }
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/*! Handles mouse drag events, and few keys:
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qawsed = rotation around xyz axis (shift and alt change the step)
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esc: put back the original location
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x: switch to/from the "translation ray" mode
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p: print the current global matrix of the manipulator */
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virtual int handle_event ( const SrEvent &e );
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private :
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void _transform ( const SrPnt& p, const SrVec& r );
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void _set_drag_selection ( const SrPnt& p );
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};
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//================================ End of File =================================================
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# endif // SR_SN_MANIPULATOR_H
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