158 lines
3.8 KiB
C
158 lines
3.8 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file trackball.h
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* @author drose
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* @date 2002-03-12
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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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* Trackball acts like Performer in trackball mode. It can either spin around
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* a piece of geometry directly, or it can spin around a camera with the
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* inverse transform to make it appear that the whole world is spinning.
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*
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* The Trackball object actually just places a transform in the data graph;
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* parent a Transform2SG node under it to actually transform objects (or
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* cameras) in the world.
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*/
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class EXPCL_PANDA_TFORM Trackball : public MouseInterfaceNode {
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PUBLISHED:
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explicit Trackball(const std::string &name);
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~Trackball();
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void reset();
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PN_stdfloat get_forward_scale() const;
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void set_forward_scale(PN_stdfloat fwdscale);
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// **** Translation ****
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const LPoint3 &get_pos() const;
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PN_stdfloat get_x() const;
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PN_stdfloat get_y() const;
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PN_stdfloat get_z() const;
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void set_pos(const LVecBase3 &vec);
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void set_pos(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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void set_x(PN_stdfloat x);
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void set_y(PN_stdfloat y);
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void set_z(PN_stdfloat z);
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// **** Rotation ****
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LVecBase3 get_hpr() const;
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PN_stdfloat get_h() const;
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PN_stdfloat get_p() const;
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PN_stdfloat get_r() const;
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void set_hpr(const LVecBase3 &hpr);
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void set_hpr(PN_stdfloat h, PN_stdfloat p, PN_stdfloat r);
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void set_h(PN_stdfloat h);
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void set_p(PN_stdfloat p);
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void set_r(PN_stdfloat r);
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// **** Origin of Rotation ****
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void reset_origin_here();
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void move_origin(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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LPoint3 get_origin() const;
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void set_origin(const LVecBase3 &origin);
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// **** Misc ****
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enum ControlMode {
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CM_default,
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CM_truck, // Normally mouse 1
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CM_pan, // Normally mouse 2
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CM_dolly, // Normally mouse 3
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CM_roll, // Normally mouse 2 + 3
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};
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void set_control_mode(ControlMode control_mode);
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ControlMode get_control_mode() const;
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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 LMatrix4 &mat);
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const LMatrix4 &get_mat() const;
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const LMatrix4 &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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int _last_button;
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PN_stdfloat _lastx, _lasty;
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PN_stdfloat _rotscale;
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PN_stdfloat _fwdscale;
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LMatrix4 _rotation;
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LPoint3 _translation;
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LMatrix4 _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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ControlMode _control_mode;
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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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