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P_RotateTool.h

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00001 /***************************************************************************
00002  *cr                                                                       
00003  *cr            (C) Copyright 1995-2019 The Board of Trustees of the           
00004  *cr                        University of Illinois                       
00005  *cr                         All Rights Reserved                        
00006  *cr                                                                   
00007  ***************************************************************************/
00008 
00009 /***************************************************************************
00010  * RCS INFORMATION:
00011  *
00012  *      $RCSfile: P_RotateTool.h,v $
00013  *      $Author: johns $        $Locker:  $             $State: Exp $
00014  *      $Revision: 1.35 $       $Date: 2019/01/17 21:21:01 $
00015  *
00016  ***************************************************************************
00017  * DESCRIPTION:
00018  * This is Paul's new Tracker code -- pgrayson@ks.uiuc.edu
00019  *
00020  * This tool, meant for use with a haptic device, is useful for
00021  * accurate rotations.  Pressing the button grabs the molecule and
00022  * fixes you to the surface of a sphere.  Moving around its surface
00023  * rotates as if you are grabbing a big trackball.  I want to add 3d
00024  * detentes!
00025  *
00026  ***************************************************************************/
00027 #ifdef VMDVRPN
00028 #include "P_Tool.h"
00029 
00033 class RotateTool : public Tool {
00034 public:
00035   RotateTool(int id, VMDApp *, Displayable *);
00036   virtual void do_event();
00037   virtual const float *position() const;
00038   virtual int isgrabbing();
00039   virtual const Matrix4 *orientation();
00040   
00041   const char *type_name() const { return "rotate"; }
00042 private:
00043   int grab_toggle;
00044   int button_was_down;
00045 
00046   int constrained;
00047   float rotatecenter[3];
00048   float rotateradius;
00049   float constrainedpos[3];
00050   float old_pos[3];
00051   float old_normal[3];
00052   q_type qoffset;
00053   Matrix4 offset;
00054   Matrix4 start;
00055   Matrix4 product;
00056 };
00057 
00058 #endif

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