69 lines
1.6 KiB
Text
69 lines
1.6 KiB
Text
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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 pStatPianoRoll.I
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* @author drose
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* @date 2000-07-18
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*/
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/**
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* Changes the amount of time the width of the horizontal axis represents.
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* This may force a redraw.
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*/
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INLINE void PStatPianoRoll::
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set_horizontal_scale(double time_width) {
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if (_time_width != time_width) {
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_time_width = time_width;
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normal_guide_bars();
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force_redraw();
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}
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}
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/**
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* Returns the amount of total time the width of the horizontal axis
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* represents.
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*/
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INLINE double PStatPianoRoll::
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get_horizontal_scale() const {
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return _time_width;
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}
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/**
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* Converts a timestamp to a horizontal pixel offset.
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*/
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INLINE int PStatPianoRoll::
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timestamp_to_pixel(double time) const {
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return (int)((double)_xsize * (time - _start_time) / _time_width);
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}
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/**
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* Converts a horizontal pixel offset to a timestamp.
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*/
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INLINE double PStatPianoRoll::
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pixel_to_timestamp(int x) const {
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return _time_width * (double)x / (double)_xsize + _start_time;
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}
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/**
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* Converts a value (i.e. a "height" in the strip chart) to a horizontal
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* pixel offset.
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*/
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INLINE int PStatPianoRoll::
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height_to_pixel(double value) const {
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return (int)((double)_xsize * value / _time_width);
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}
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/**
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* Converts a horizontal pixel offset to a value (a "height" in the strip
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* chart).
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*/
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INLINE double PStatPianoRoll::
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pixel_to_height(int x) const {
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return _time_width * (double)x / (double)_xsize;
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}
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