/**
* gwy_tip_estimate_partial:
* @tip: Tip data to be refined (allocated).
* @surface: Surface data.
* @threshold: Threshold for noise supression.
* @use_edges: Whether use also edges of image.
* @count: Where to store the number of places that produced refinements to.
* @set_fraction: Function that sets fraction to output (or %NULL).
* @set_message: Function that sets message to output (or %NULL).
*
* Performs partial blind estimation algorithm published by Villarrubia. This
* function converts all fields into form requested by "morph_lib.c" library,
* that is almost identical with original Villarubia's library. Note that the
* threshold value must be chosen sufficently high value to supress small
* fluctulations due to noise (that would lead to very sharp tip) but
* sufficiently low value to put algorithm at work. A value similar to 1/10000
* of surface range can be good. Otherwise we recommend to start with zero
* threshold and increase it slowly to observe changes and choose right value.
*
* Returns: Estimated tip. May return %NULL if aborted.
**/
GwyDataField*
gwy_tip_estimate_partial(GwyDataField *tip,
GwyDataField *surface,
gdouble threshold,
gboolean use_edges,
gint *count,
GwySetFractionFunc set_fraction,
GwySetMessageFunc set_message)
{
gint **ftip;
gint **fsurface;
gdouble tipmin, surfacemin, step;
gint cnt;
if (set_message && !set_message(N_("Converting fields")))
return NULL;
tipmin = gwy_data_field_get_min(tip);
surfacemin = gwy_data_field_get_min(surface);
step = (gwy_data_field_get_max(surface)-surfacemin)/10000;
ftip = i_datafield_to_field(tip, TRUE, tipmin, step);
fsurface = i_datafield_to_field(surface, FALSE, surfacemin, step);
if (set_message && !set_message(N_("Starting partial estimation"))) {
_gwy_morph_lib_ifreematrix(ftip, tip->xres);
_gwy_morph_lib_ifreematrix(fsurface, surface->xres);
return NULL;
}
cnt = _gwy_morph_lib_itip_estimate0(fsurface, surface->yres, surface->xres,
tip->yres, tip->xres,
tip->yres/2, tip->xres/2,
ftip, threshold/step, use_edges,
set_fraction, set_message);
if (cnt == -1 || (set_fraction && !set_fraction(0.0))) {
_gwy_morph_lib_ifreematrix(ftip, tip->xres);
_gwy_morph_lib_ifreematrix(fsurface, surface->xres);
return NULL;
}
gwy_debug("Converting fields");
if (set_message)
set_message(N_("Converting fields"));
tip = i_field_to_datafield(ftip, tip, tipmin, step);
gwy_data_field_add(tip, -gwy_data_field_get_min(tip));
_gwy_morph_lib_ifreematrix(ftip, tip->xres);
_gwy_morph_lib_ifreematrix(fsurface, surface->xres);
if (count)
*count = cnt;
return tip;
}
void MidiControllerDisplay::midi_value_changed(int c, int v) {
if (c != ctr) {
return;
}
if (v >= 0) {
set_sensitive(true);
set_fraction(v / 127.0);
} else {
set_sensitive(false);
}
}
