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Fix math errors in normalizer and waveform colorer.

This commit is contained in:
Jonathan Moore Liles 2008-03-09 18:16:51 -05:00
parent 90a5568a20
commit bb61dde7fb
2 changed files with 71 additions and 71 deletions
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4
Peaks.C
View File

@ -303,10 +303,10 @@ Peaks::normalization_factor( float fpp, nframes_t start, nframes_t end ) const
Peak p = peak( start, end );
s = fabs( 1.0f / p.max );
s = 1.0f / fabs( p.max );
if ( s * p.min < -1.0 )
s = 1 / fabs( p.max );
s = 1.0f / fabs( p.min );
return s;
}

138
Waveform.C
View File

@ -39,48 +39,48 @@ bool Waveform::vary_color = true;
* outlined, filled, polygonal, rectified. */
/** draw a portion of /clip/'s waveform. coordinates are the portion to draw */
void
Waveform::draw ( int ox, int X, int Y, int W, int H, Audio_File *_clip, int channel, float fpp, nframes_t _start, nframes_t _end, float _scale, Fl_Color color )
{
fl_push_clip( X, Y, W, H );
void
Waveform::draw ( int ox, int X, int Y, int W, int H, Audio_File *_clip, int channel, float fpp, nframes_t _start, nframes_t _end, float _scale, Fl_Color color )
{
fl_push_clip( X, Y, W, H );
int j;
int j;
// int start = timeline->ts_to_x( _start );
int start = timeline->ts_to_x( _start ) + (X - ox);
int start = timeline->ts_to_x( _start ) + (X - ox);
const Peaks *pk = _clip->peaks( channel );
const Peaks *pk = _clip->peaks( channel );
_start = timeline->x_to_ts( start );
_start = timeline->x_to_ts( start );
pk->fill_buffer( fpp, _start, _start + timeline->x_to_ts( W ) );
pk->fill_buffer( fpp, _start, _start + timeline->x_to_ts( W ) );
const int halfheight = H / 2;
const int mid = Y + halfheight;
const int halfheight = H / 2;
const int mid = Y + halfheight;
if ( Waveform::fill )
if ( Waveform::fill )
{
j = start;
for ( int x = X; x <= X + W; ++x, ++j )
{
j = start;
for ( int x = X; x <= X + W; ++x, ++j )
{
Peak p = (*pk)[ j ];
Peak p = (*pk)[ j ];
p.max *= _scale;
p.min *= _scale;
p.max *= _scale;
p.min *= _scale;
const float diff = fabs( p.max - p.min );
const float diff = fabs( p.max - p.min );
if ( diff > 2.0f )
fl_color( FL_RED );
else
if ( Waveform::vary_color )
fl_color( fl_color_average( FL_WHITE, color, min( 1.0f, diff ) ) );
fl_color( fl_color_average( FL_WHITE, color, diff / 2.0f ) );
else
fl_color( color );
if ( diff > 1.0f )
fl_color( FL_RED );
const int ty = mid + (halfheight * p.min);
const int by = mid + (halfheight * p.max );
fl_line( x, ty, x, by );
const int ty = mid + (halfheight * p.min);
const int by = mid + (halfheight * p.max );
fl_line( x, ty, x, by );
/* if ( outline ) */
/* { */
@ -89,48 +89,48 @@ bool Waveform::vary_color = true;
/* fl_line( x, by + 2, x, by ); */
/* } */
}
}
if ( Waveform::outline )
{
fl_color( fl_darker( fl_darker( color ) ) );
fl_line_style( FL_SOLID, 2 );
fl_begin_line();
j = start;
for ( int x = X; x <= X + W; ++x, ++j )
{
Peak p = (*pk)[ j ];
p.min *= _scale;
fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.min ));
}
fl_end_line();
fl_begin_line();
j = start;
for ( int x = X; x <= X + W; ++x, ++j )
{
Peak p = (*pk)[ j ];
p.max *= _scale;
fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.max ));
}
fl_end_line();
fl_line_style( FL_SOLID, 0 );
}
fl_pop_clip();
}
if ( Waveform::outline )
{
fl_color( fl_darker( fl_darker( color ) ) );
fl_line_style( FL_SOLID, 2 );
fl_begin_line();
j = start;
for ( int x = X; x <= X + W; ++x, ++j )
{
Peak p = (*pk)[ j ];
p.min *= _scale;
fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.min ));
}
fl_end_line();
fl_begin_line();
j = start;
for ( int x = X; x <= X + W; ++x, ++j )
{
Peak p = (*pk)[ j ];
p.max *= _scale;
fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.max ));
}
fl_end_line();
fl_line_style( FL_SOLID, 0 );
}
fl_pop_clip();
}