155 lines
3.9 KiB
C++
155 lines
3.9 KiB
C++
// Filename: trackball.h
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// Created by: drose (12Mar02)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef TRACKBALL_H
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#define TRACKBALL_H
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#include "pandabase.h"
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#include "mouseInterfaceNode.h"
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#include "nodePath.h"
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#include "modifierButtons.h"
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#include "luse.h"
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#include "transformState.h"
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////////////////////////////////////////////////////////////////////
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// Class : Trackball
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// Description : Trackball acts like Performer in trackball mode. It
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// can either spin around a piece of geometry directly,
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// or it can spin around a camera with the inverse
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// transform to make it appear that the whole world is
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// spinning.
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//
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// The Trackball object actually just places a transform
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// in the data graph; parent a Transform2SG node under
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// it to actually transform objects (or cameras) in the
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// world.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA Trackball : public MouseInterfaceNode {
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PUBLISHED:
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Trackball(const string &name);
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~Trackball();
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void reset();
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float get_forward_scale() const;
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void set_forward_scale(float fwdscale);
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/// **** Translation ****
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const LPoint3f &get_pos() const;
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float get_x() const;
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float get_y() const;
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float get_z() const;
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void set_pos(const LVecBase3f &vec);
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void set_pos(float x, float y, float z);
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void set_x(float x);
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void set_y(float y);
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void set_z(float z);
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/// **** Rotation ****
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LVecBase3f get_hpr() const;
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float get_h() const;
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float get_p() const;
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float get_r() const;
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void set_hpr(const LVecBase3f &hpr);
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void set_hpr(float h, float p, float r);
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void set_h(float h);
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void set_p(float p);
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void set_r(float r);
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/// **** Origin of Rotation ****
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void reset_origin_here();
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void move_origin(float x, float y, float z);
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LPoint3f get_origin() const;
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void set_origin(const LVecBase3f &origin);
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/// **** Misc ****
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void set_invert(bool flag);
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bool get_invert() const;
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void set_rel_to(const NodePath &rel_to);
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const NodePath &get_rel_to() const;
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void set_coordinate_system(CoordinateSystem cs);
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CoordinateSystem get_coordinate_system() const;
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void set_mat(const LMatrix4f &mat);
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const LMatrix4f &get_mat() const;
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const LMatrix4f &get_trans_mat() const;
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private:
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void apply(double x, double y, int button);
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void reextract();
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void recompute();
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float _lastx, _lasty;
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float _rotscale;
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float _fwdscale;
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LMatrix4f _rotation;
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LPoint3f _translation;
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LMatrix4f _mat, _orig;
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bool _invert;
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NodePath _rel_to;
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CoordinateSystem _cs;
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protected:
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// Inherited from DataNode
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virtual void do_transmit_data(DataGraphTraverser *trav,
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const DataNodeTransmit &input,
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DataNodeTransmit &output);
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private:
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// inputs
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int _pixel_xy_input;
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// outputs
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int _transform_output;
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CPT(TransformState) _transform;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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MouseInterfaceNode::init_type();
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register_type(_type_handle, "Trackball",
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MouseInterfaceNode::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#endif
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