C++ (Cpp) gimp_curve_set_curve Exemples

Exemple #1

Fichier : gimpcurvesconfig.c Projet : frne/gimp

GObject *
gimp_curves_config_new_explicit (gint32         channel,
                                 const gdouble *samples,
                                 gint           n_samples)
{
  GimpCurvesConfig *config;
  GimpCurve        *curve;
  gint              i;

  g_return_val_if_fail (channel >= GIMP_HISTOGRAM_VALUE &&
                        channel <= GIMP_HISTOGRAM_ALPHA, NULL);
  g_return_val_if_fail (samples != NULL, NULL);
  g_return_val_if_fail (n_samples >= 2 && n_samples <= 4096, NULL);

  config = g_object_new (GIMP_TYPE_CURVES_CONFIG, NULL);

  curve = config->curve[channel];

  gimp_data_freeze (GIMP_DATA (curve));

  gimp_curve_set_curve_type (curve, GIMP_CURVE_FREE);
  gimp_curve_set_n_samples (curve, n_samples);

  for (i = 0; i < n_samples; i++)
    gimp_curve_set_curve (curve,
                          (gdouble) i / (gdouble) (n_samples - 1),
                          (gdouble) samples[i]);

  gimp_data_thaw (GIMP_DATA (curve));

  return G_OBJECT (config);
}

Exemple #2

Fichier : gimpdrawable-curves.c Projet : 1ynx/gimp

void
gimp_drawable_curves_explicit (GimpDrawable *drawable,
                               GimpProgress *progress,
                               gint32        channel,
                               const guint8 *points,
                               gint          n_points)
{
  GimpCurvesConfig *config;
  GimpCurve        *curve;
  gint              i;

  g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
  g_return_if_fail (! gimp_drawable_is_indexed (drawable));
  g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
  g_return_if_fail (channel >= GIMP_HISTOGRAM_VALUE &&
                    channel <= GIMP_HISTOGRAM_ALPHA);

  if (channel == GIMP_HISTOGRAM_ALPHA)
    g_return_if_fail (gimp_drawable_has_alpha (drawable));

  if (gimp_drawable_is_gray (drawable))
    g_return_if_fail (channel == GIMP_HISTOGRAM_VALUE ||
                      channel == GIMP_HISTOGRAM_ALPHA);

  config = g_object_new (GIMP_TYPE_CURVES_CONFIG, NULL);

  curve = config->curve[channel];

  gimp_data_freeze (GIMP_DATA (curve));

  gimp_curve_set_curve_type (curve, GIMP_CURVE_FREE);

  for (i = 0; i < 256; i++)
    gimp_curve_set_curve (curve,
                          (gdouble) i         / 255.0,
                          (gdouble) points[i] / 255.0);

  gimp_data_thaw (GIMP_DATA (curve));

  gimp_drawable_curves (drawable, progress, config);

  g_object_unref (config);
}