Panda3D

rotate_to.h

00001 // Filename: rotate_to.h
00002 // Created by:  drose (04Nov99)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef ROTATE_TO_H
00016 #define ROTATE_TO_H
00017 
00018 ////////////////////////////////////////////////////////////////////
00019 //
00020 // rotate_to()
00021 //
00022 // This function computes a suitable rotation matrix to rotate vector
00023 // a onto vector b.  That is, it computes mat so that a * mat = b.
00024 // The rotation axis is chosen to give the smallest possible rotation
00025 // angle.
00026 //
00027 ////////////////////////////////////////////////////////////////////
00028 
00029 #include <math.h>
00030 #include "pandabase.h"
00031 #include "luse.h"
00032 
00033 BEGIN_PUBLISH
00034 
00035 EXPCL_PANDA_MATHUTIL void rotate_to(LMatrix3f &mat, const LVector3f &a, const LVector3f &b);
00036 EXPCL_PANDA_MATHUTIL void rotate_to(LMatrix3d &mat, const LVector3d &a, const LVector3d &b);
00037 
00038 EXPCL_PANDA_MATHUTIL void rotate_to(LMatrix4f &mat, const LVector3f &a, const LVector3f &b);
00039 EXPCL_PANDA_MATHUTIL void rotate_to(LMatrix4d &mat, const LVector3d &a, const LVector3d &b);
00040 
00041 END_PUBLISH
00042 
00043 #endif
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