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fltTransformRotateAboutPoint.h
00001 // Filename: fltTransformRotateAboutPoint.h
00002 // Created by:  drose (30Aug00)
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 FLTTRANSFORMROTATEABOUTPOINT_H
00016 #define FLTTRANSFORMROTATEABOUTPOINT_H
00017 
00018 #include "pandatoolbase.h"
00019 
00020 #include "fltTransformRecord.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : FltTransformRotateAboutPoint
00024 // Description : A transformation that rotates about a particular axis
00025 //               in space, defined by a point and vector.
00026 ////////////////////////////////////////////////////////////////////
00027 class FltTransformRotateAboutPoint : public FltTransformRecord {
00028 public:
00029   FltTransformRotateAboutPoint(FltHeader *header);
00030 
00031   void set(const LPoint3d &center, const LVector3 &axis, PN_stdfloat angle);
00032 
00033   const LPoint3d &get_center() const;
00034   const LVector3 &get_axis() const;
00035   PN_stdfloat get_angle() const;
00036 
00037 private:
00038   void recompute_matrix();
00039 
00040   LPoint3d _center;
00041   LVector3 _axis;
00042   PN_stdfloat _angle;
00043 
00044 protected:
00045   virtual bool extract_record(FltRecordReader &reader);
00046   virtual bool build_record(FltRecordWriter &writer) const;
00047 
00048 public:
00049   virtual TypeHandle get_type() const {
00050     return get_class_type();
00051   }
00052   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00053   static TypeHandle get_class_type() {
00054     return _type_handle;
00055   }
00056   static void init_type() {
00057     FltTransformRecord::init_type();
00058     register_type(_type_handle, "FltTransformRotateAboutPoint",
00059                   FltTransformRecord::get_class_type());
00060   }
00061 
00062 private:
00063   static TypeHandle _type_handle;
00064 };
00065 
00066 #endif
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