00001 // Filename: pStatPianoRoll.I 00002 // Created by: drose (18Jul00) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved 00008 // 00009 // All use of this software is subject to the terms of the Panda 3d 00010 // Software license. You should have received a copy of this license 00011 // along with this source code; you will also find a current copy of 00012 // the license at http://www.panda3d.org/license.txt . 00013 // 00014 // To contact the maintainers of this program write to 00015 // panda3d@yahoogroups.com . 00016 // 00017 //////////////////////////////////////////////////////////////////// 00018 00019 //////////////////////////////////////////////////////////////////// 00020 // Function: PStatPianoRoll::set_horizontal_scale 00021 // Access: Public 00022 // Description: Changes the amount of time the width of the 00023 // horizontal axis represents. This may force a redraw. 00024 //////////////////////////////////////////////////////////////////// 00025 INLINE void PStatPianoRoll:: 00026 set_horizontal_scale(float time_width) { 00027 if (_time_width != time_width) { 00028 _time_width = time_width; 00029 normal_guide_bars(); 00030 force_redraw(); 00031 } 00032 } 00033 00034 //////////////////////////////////////////////////////////////////// 00035 // Function: PStatPianoRoll::get_horizontal_scale 00036 // Access: Public 00037 // Description: Returns the amount of total time the width of the 00038 // horizontal axis represents. 00039 //////////////////////////////////////////////////////////////////// 00040 INLINE float PStatPianoRoll:: 00041 get_horizontal_scale() const { 00042 return _time_width; 00043 } 00044 00045 //////////////////////////////////////////////////////////////////// 00046 // Function: PStatPianoRoll::timestamp_to_pixel 00047 // Access: Public 00048 // Description: Converts a timestamp to a horizontal pixel offset. 00049 //////////////////////////////////////////////////////////////////// 00050 INLINE int PStatPianoRoll:: 00051 timestamp_to_pixel(float time) const { 00052 return (int)((float)_xsize * (time - _start_time) / _time_width); 00053 } 00054 00055 //////////////////////////////////////////////////////////////////// 00056 // Function: PStatPianoRoll::pixel_to_timestamp 00057 // Access: Public 00058 // Description: Converts a horizontal pixel offset to a timestamp. 00059 //////////////////////////////////////////////////////////////////// 00060 INLINE float PStatPianoRoll:: 00061 pixel_to_timestamp(int x) const { 00062 return _time_width * (float)x / (float)_xsize + _start_time; 00063 }
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