// Returns value of parameter at the given position (fraction is a
// fractional bar position, 0-255)
int CVariableParameter::GetValueAt(int iBar,int iFraction) const
{
int
iBefore=GetPreviousPoint(iBar,iFraction),
iAfter=GetNextPoint(iBar,iFraction);
// If before any points, return default/first value
if(iBefore==-1)
{
if(iAfter==-1)
return m_iDefaultValue;
else
return GetPointValue(iAfter);
}
// If after all points, return last value
if(iAfter==-1)
return GetPointValue(iBefore);
// Calculate relative position
int iSize =
(GetPointBar(iAfter) * 256 + GetPointFraction(iAfter)) -
(GetPointBar(iBefore) * 256 + GetPointFraction(iBefore));
int iOffset =
(iBar * 256 + iFraction) -
(GetPointBar(iBefore) * 256 + GetPointFraction(iBefore));
// Get proportional distance (0-256)
int iDistance=(iOffset*256)/iSize;
// Return scaled value
return
(GetPointValue(iBefore) * (256-iDistance) +
GetPointValue(iAfter) * iDistance) / 256;
}
void Snake::Move()
{
painter.clear(vpoint.first());
vpoint.removeFirst();
Point Head=GetNextPoint();
vpoint.append(Head);
head=Head;
painter.draw(head);
}
gboolean
FindSinglePoint ( gsl_matrix *pic, gsl_matrix* raw, gint width, gint height, gsl_vector **v, gsl_vector **v1, GuiData *gd ) {
gint dx = gsl_vector_get ( *v1, 0 ) - gsl_vector_get ( *v, 0 );
gint dy = gsl_vector_get ( *v1, 1 ) - gsl_vector_get ( *v, 1 );
gint x = 0, y = 0;
// 沿y正方向 111111111111
if ( dx == 0 && dy == 1 ) {
GetNextPoint ( pic, raw, *v1, 0, 1, 1, 1, -1, 1, &x, &y );
// 沿y负方向 222222222222222
} else if ( dx == 0 && dy == -1 ) {
GetNextPoint ( pic, raw, *v1, 0, -1, 1, -1, -1, -1, &x, &y );
// 沿x正方向 333333333333333
} else if ( dx == 1 && dy == 0 ) {
GetNextPoint ( pic, raw, *v1, 1, 0, 1, -1, 1, 1, &x, &y );
// 沿x负方向 4444444444444444
} else if ( dx == -1 && dy == 0 ) {
GetNextPoint ( pic, raw, *v1, -1, 0, -1, -1, -1, 1, &x, &y );
// 沿xy正方向 55555555555555555
} else if ( dx == 1 && dy == 1 ) {
GetNextPoint ( pic, raw, *v1, 1, 1, 1, 0, 0, 1, &x, &y );
// 沿xy负方向 6666666666666666
} else if ( dx == -1 && dy == -1 ) {
GetNextPoint ( pic, raw, *v1, -1, -1, -1, 0, 0, -1, &x, &y );
// 沿x正y负方向 77777777777777777
} else if ( dx == 1 && dy == -1 ) {
GetNextPoint ( pic, raw, *v1, 1, -1, 1, 0, 0, -1, &x, &y );
// 沿y正x负方向 88888888888888888888
} else if ( dx == -1 && dy == 1 ) {
GetNextPoint ( pic, raw, *v1, -1, 1, -1, 0, 0, 1, &x, &y );
}
if ( x < ignore || x > height - ignore
|| y < ignore || y > width - ignore
|| gsl_matrix_get ( raw, x, y ) < 1000 )
return FALSE;
*v = *v1;
*v1 = gsl_vector_alloc (3);
gsl_vector_set ( *v1, 0, x );
gsl_vector_set ( *v1, 1, y );
gsl_vector_set ( *v1, 2, gsl_matrix_get ( raw, x, y ) );
gd->rawlist = g_slist_append ( gd->rawlist, *v1 );
// printf ( "w:%d x:%d y:%d\n", width-ignore, x, y ); fflush ( stdout );
gd->x = y;
gd->y = x;
// gd->redraw = TRUE;
// while ( gd->redraw ) usleep ( 2 );
return TRUE;
}
