stuff
This commit is contained in:
John Cupitt
parent
defdf1655b
commit
e6e948a743
@ -267,68 +267,54 @@
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* #define FAST_PSEUDO_FLOOR(x) ( (x)>=0 ? (int)(x) : (int)(x)-1 )
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*/
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enum
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{
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PROP_0,
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PROP_LAST
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};
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#define VIPS_TYPE_INTERPOLATE_NOHALO \
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(vips_interpolate_nohalo_get_type())
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#define VIPS_INTERPOLATE_NOHALO( obj ) \
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(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
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VIPS_TYPE_INTERPOLATE_NOHALO, VipsInterpolateNohalo ))
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#define VIPS_INTERPOLATE_NOHALO_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_CAST( (klass), \
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VIPS_TYPE_INTERPOLATE_NOHALO, VipsInterpolateNohaloClass))
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#define VIPS_IS_INTERPOLATE_NOHALO( obj ) \
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(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_INTERPOLATE_NOHALO ))
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#define VIPS_IS_INTERPOLATE_NOHALO_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_INTERPOLATE_NOHALO ))
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#define VIPS_INTERPOLATE_NOHALO_GET_CLASS( obj ) \
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(G_TYPE_INSTANCE_GET_CLASS( (obj), \
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VIPS_TYPE_INTERPOLATE_NOHALO, VipsInterpolateNohaloClass ))
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static void gegl_sampler_yafr_get ( GeglSampler* restrict self,
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const gdouble absolute_x,
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const gdouble absolute_y,
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void* restrict output);
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typedef struct _VipsInterpolateNohalo {
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VipsInterpolate parent_object;
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static void set_property (GObject* gobject,
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guint property_id,
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GValue* value,
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GParamSpec* pspec);
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} VipsInterpolateNohalo;
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static void get_property (GObject* gobject,
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guint property_id,
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GValue* value,
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GParamSpec* pspec);
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typedef struct _VipsInterpolateNohaloClass {
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VipsInterpolateClass parent_class;
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G_DEFINE_TYPE( GeglSamplerYafr, gegl_sampler_yafr, GEGL_TYPE_SAMPLER )
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} VipsInterpolateNohaloClass;
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static void
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gegl_sampler_yafr_class_init (GeglSamplerYafrClass *klass)
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{
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GeglSamplerClass *sampler_class = GEGL_SAMPLER_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->set_property = set_property;
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object_class->get_property = get_property;
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sampler_class->get = gegl_sampler_yafr_get;
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}
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static void
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gegl_sampler_yafr_init (GeglSamplerYafr *self)
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{
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/*
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* context_rect is a five-by-five stencil centered around the
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* nearest input pixel center. See comment below about using a
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* "non-centered" stencil (one based at the corner) instead.
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/* Calculate the four results surrounding the target point, our caller does
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* bilinear interpolation of them.
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*/
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GEGL_SAMPLER (self)->context_rect = (GeglRectangle){0,0,5,5};
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GEGL_SAMPLER (self)->interpolate_format = babl_format ("RaGaBaA float");
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}
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static inline IN_AND_OUT_TYPE
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nohalo1 (const gdouble w_times_z,
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const gdouble x_times_z,
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const gdouble w_times_y,
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const gdouble x_times_y,
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const gdouble dos_thr,
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const gdouble dos_fou,
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const gdouble tre_two,
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const gdouble tre_thr,
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const gdouble tre_fou,
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const gdouble tre_fiv,
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const gdouble qua_two,
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const gdouble qua_thr,
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const gdouble qua_fou,
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const gdouble qua_fiv,
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const gdouble cin_thr,
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const gdouble cin_fou)
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static void inline
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nohalo1(
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const double dos_thr,
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const double dos_fou,
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const double tre_two,
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const double tre_thr,
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const double tre_fou,
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const double tre_fiv,
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const double qua_two,
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const double qua_thr,
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const double qua_fou,
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const double qua_fiv,
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const double cin_thr,
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const double cin_fou,
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double *r1,
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double *r2,
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double *r3,
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double *r4 )
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{
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/*
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* The potentially needed input pixel values are described by the
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@ -383,171 +369,140 @@ nohalo1 (const gdouble w_times_z,
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* two consecutive pixel value differences don't have the same sign,
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* the corresponding slope is set to 0.
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*/
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/*
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* Tre(s) horizontal differences:
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*/
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const gdouble deux_tre = tre_thr - tre_two;
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const gdouble troi_tre = tre_fou - tre_thr;
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const gdouble quat_tre = tre_fiv - tre_fou;
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const double deux_tre = tre_thr - tre_two;
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const double troi_tre = tre_fou - tre_thr;
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const double quat_tre = tre_fiv - tre_fou;
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/*
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* Qua(ttro) horizontal differences:
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*/
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const gdouble deux_qua = qua_thr - qua_two;
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const gdouble troi_qua = qua_fou - qua_thr;
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const gdouble quat_qua = qua_fiv - qua_fou;
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const double deux_qua = qua_thr - qua_two;
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const double troi_qua = qua_fou - qua_thr;
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const double quat_qua = qua_fiv - qua_fou;
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/*
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* Thr(ee) vertical differences:
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*/
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const gdouble deux_thr = tre_thr - dos_thr;
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const gdouble troi_thr = qua_thr - tre_thr;
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const gdouble quat_thr = cin_thr - qua_thr;
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const double deux_thr = tre_thr - dos_thr;
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const double troi_thr = qua_thr - tre_thr;
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const double quat_thr = cin_thr - qua_thr;
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/*
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* Fou(r) vertical differences:
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*/
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const gdouble deux_fou = tre_fou - dos_fou;
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const gdouble troi_fou = qua_fou - tre_fou;
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const gdouble quat_fou = cin_fou - qua_fou;
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const double deux_fou = tre_fou - dos_fou;
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const double troi_fou = qua_fou - tre_fou;
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const double quat_fou = cin_fou - qua_fou;
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/*
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* Tre:
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*/
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const gint sign_deux_tre = 2 * ( deux_tre >= 0. ) - 1;
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const gint sign_troi_tre = 2 * ( troi_tre >= 0. ) - 1;
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const gint sign_quat_tre = 2 * ( quat_tre >= 0. ) - 1;
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const int sign_deux_tre = 2 * (deux_tre >= 0.) - 1;
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const int sign_troi_tre = 2 * (troi_tre >= 0.) - 1;
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const int sign_quat_tre = 2 * (quat_tre >= 0.) - 1;
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/*
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* Qua:
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*/
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const gint sign_deux_qua = 2 * ( deux_qua >= 0. ) - 1;
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const gint sign_troi_qua = 2 * ( troi_qua >= 0. ) - 1;
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const gint sign_quat_qua = 2 * ( quat_qua >= 0. ) - 1;
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const int sign_deux_qua = 2 * (deux_qua >= 0.) - 1;
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const int sign_troi_qua = 2 * (troi_qua >= 0.) - 1;
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const int sign_quat_qua = 2 * (quat_qua >= 0.) - 1;
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/*
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* Thr:
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*/
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const gint sign_deux_thr = 2 * ( deux_thr >= 0. ) - 1;
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const gint sign_troi_thr = 2 * ( troi_thr >= 0. ) - 1;
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const gint sign_quat_thr = 2 * ( quat_thr >= 0. ) - 1;
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const int sign_deux_thr = 2 * (deux_thr >= 0.) - 1;
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const int sign_troi_thr = 2 * (troi_thr >= 0.) - 1;
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const int sign_quat_thr = 2 * (quat_thr >= 0.) - 1;
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/*
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* Fou:
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*/
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const gint sign_deux_fou = 2 * ( deux_fou >= 0. ) - 1;
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const gint sign_troi_fou = 2 * ( troi_fou >= 0. ) - 1;
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const gint sign_quat_fou = 2 * ( quat_fou >= 0. ) - 1;
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const int sign_deux_fou = 2 * (deux_fou >= 0.) - 1;
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const int sign_troi_fou = 2 * (troi_fou >= 0.) - 1;
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const int sign_quat_fou = 2 * (quat_fou >= 0.) - 1;
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/*
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* Tre:
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*/
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const gdouble abs_deux_tre = sign_deux_tre * deux_tre;
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const gdouble abs_troi_tre = sign_troi_tre * troi_tre;
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const gdouble abs_quat_tre = sign_quat_tre * quat_tre;
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const double abs_deux_tre = sign_deux_tre * deux_tre;
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const double abs_troi_tre = sign_troi_tre * troi_tre;
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const double abs_quat_tre = sign_quat_tre * quat_tre;
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/*
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* Qua:
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*/
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const gdouble abs_deux_qua = sign_deux_qua * deux_qua;
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const gdouble abs_troi_qua = sign_troi_qua * troi_qua;
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const gdouble abs_quat_qua = sign_quat_qua * quat_qua;
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const double abs_deux_qua = sign_deux_qua * deux_qua;
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const double abs_troi_qua = sign_troi_qua * troi_qua;
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const double abs_quat_qua = sign_quat_qua * quat_qua;
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/*
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* Thr:
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*/
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const gdouble abs_deux_thr = sign_deux_thr * deux_thr;
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const gdouble abs_troi_thr = sign_troi_thr * troi_thr;
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const gdouble abs_quat_thr = sign_quat_thr * quat_thr;
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const double abs_deux_thr = sign_deux_thr * deux_thr;
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const double abs_troi_thr = sign_troi_thr * troi_thr;
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const double abs_quat_thr = sign_quat_thr * quat_thr;
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/*
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* Fou:
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*/
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const gdouble abs_deux_fou = sign_deux_fou * deux_fou;
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const gdouble abs_troi_fou = sign_troi_fou * troi_fou;
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const gdouble abs_quat_fou = sign_quat_fou * quat_fou;
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const double abs_deux_fou = sign_deux_fou * deux_fou;
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const double abs_troi_fou = sign_troi_fou * troi_fou;
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const double abs_quat_fou = sign_quat_fou * quat_fou;
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/*
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* Tre:
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*/
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const gdouble twice_tre_thr_horizo =
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( 1 + sign_deux_tre * sign_troi_tre )
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*
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(
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( abs_deux_tre <= abs_troi_tre )
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*
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( deux_tre - troi_tre )
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+
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const double twice_tre_thr_horizo =
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(1 + sign_deux_tre * sign_troi_tre) * (
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(abs_deux_tre <= abs_troi_tre) *
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(deux_tre - troi_tre) +
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troi_tre
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);
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const gdouble twice_tre_fou_horizo =
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( 1 + sign_troi_tre * sign_quat_tre )
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*
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(
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( abs_troi_tre <= abs_quat_tre )
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*
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( troi_tre - quat_tre )
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+
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const double twice_tre_fou_horizo =
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(1 + sign_troi_tre * sign_quat_tre) * (
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(abs_troi_tre <= abs_quat_tre) *
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(troi_tre - quat_tre) +
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quat_tre
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);
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/*
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* Qua:
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*/
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const gdouble twice_qua_thr_horizo =
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( 1 + sign_deux_qua * sign_troi_qua )
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*
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(
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( abs_deux_qua <= abs_troi_qua )
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*
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( deux_qua - troi_qua )
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+
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const double twice_qua_thr_horizo =
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(1 + sign_deux_qua * sign_troi_qua) * (
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(abs_deux_qua <= abs_troi_qua) *
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(deux_qua - troi_qua) +
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troi_qua
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);
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const gdouble twice_qua_fou_horizo =
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( 1 + sign_troi_qua * sign_quat_qua )
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*
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(
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( abs_troi_qua <= abs_quat_qua )
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*
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( troi_qua - quat_qua )
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+
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const double twice_qua_fou_horizo =
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(1 + sign_troi_qua * sign_quat_qua) * (
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(abs_troi_qua <= abs_quat_qua) *
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(troi_qua - quat_qua) +
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quat_qua
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);
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/*
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* Thr:
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*/
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const gdouble twice_tre_thr_vertic =
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( 1 + sign_deux_thr * sign_troi_thr )
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*
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(
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( abs_deux_thr <= abs_troi_thr )
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*
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( deux_thr - troi_thr )
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+
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const double twice_tre_thr_vertic =
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(1 + sign_deux_thr * sign_troi_thr) * (
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(abs_deux_thr <= abs_troi_thr) *
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(deux_thr - troi_thr) +
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troi_thr
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);
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const gdouble twice_qua_thr_vertic =
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( 1 + sign_troi_thr * sign_quat_thr )
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*
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(
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( abs_troi_thr <= abs_quat_thr )
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*
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( troi_thr - quat_thr )
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+
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const double twice_qua_thr_vertic =
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(1 + sign_troi_thr * sign_quat_thr) * (
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(abs_troi_thr <= abs_quat_thr) *
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(troi_thr - quat_thr) +
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quat_thr
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);
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/*
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* Fou:
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*/
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const gdouble twice_tre_fou_vertic =
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( 1 + sign_deux_fou * sign_troi_fou )
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*
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(
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( abs_deux_fou <= abs_troi_fou )
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*
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( deux_fou - troi_fou )
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+
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const double twice_tre_fou_vertic =
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(1 + sign_deux_fou * sign_troi_fou) * (
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(abs_deux_fou <= abs_troi_fou) *
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(deux_fou - troi_fou) +
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troi_fou
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);
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const gdouble twice_qua_fou_vertic =
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( 1 + sign_troi_fou * sign_quat_fou )
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*
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(
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( abs_troi_fou <= abs_quat_fou )
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*
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( troi_fou - quat_fou )
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+
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const double twice_qua_fou_vertic =
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(1 + sign_troi_fou * sign_quat_fou) * (
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(abs_troi_fou <= abs_quat_fou) *
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(troi_fou - quat_fou) +
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quat_fou
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);
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@ -558,10 +513,9 @@ nohalo1 (const gdouble w_times_z,
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/*
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* Tre:
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*/
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const gdouble tre_thrfou =
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.5 * ( tre_thr + tre_fou )
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+
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.125 * ( twice_tre_thr_horizo - twice_tre_fou_horizo );
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const double tre_thrfou =
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.5 * (tre_thr + tre_fou) +
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.125 * (twice_tre_thr_horizo - twice_tre_fou_horizo);
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/*
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* Compute the needed "vertical" double resolution pixel value:
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@ -569,70 +523,68 @@ nohalo1 (const gdouble w_times_z,
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/*
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* Thr:
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*/
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const gdouble trequa_thr =
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.5 * ( tre_thr + qua_thr )
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+
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.125 * ( twice_tre_thr_vertic - twice_qua_thr_vertic );
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const double trequa_thr =
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.5 * (tre_thr + qua_thr) +
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.125 * (twice_tre_thr_vertic - twice_qua_thr_vertic);
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/*
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* Compute the "diagonal" (at the boundary between four input pixel
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* areas) double resolution pixel value:
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*/
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const gdouble trequa_thrfou =
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.25 * ( qua_fou - tre_thr )
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+
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.5 * ( tre_thrfou + trequa_thr )
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+
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.0625
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*
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(
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( twice_qua_thr_horizo + twice_tre_fou_vertic )
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-
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( twice_qua_fou_horizo + twice_qua_fou_vertic )
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const double trequa_thrfou =
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.25 * (qua_fou - tre_thr) +
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.5 * (tre_thrfou + trequa_thr) +
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.0625 * (
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(twice_qua_thr_horizo + twice_tre_fou_vertic) -
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(twice_qua_fou_horizo + twice_qua_fou_vertic)
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);
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/*
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* Compute the output pixel values, doing the final interpolation
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* step with bilinear:
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*/
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const IN_AND_OUT_TYPE newval =
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w_times_z * tre_thr
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+
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x_times_z * tre_thrfou
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+
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w_times_y * trequa_thr
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+
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x_times_y * trequa_thrfou;
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/*
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* The above works if with gfloats and gdoubles. However, in order
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* to get correct rounding when one uses "full" integers, use the
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* following two versions:
|
||||
*/
|
||||
/*
|
||||
* If the IN_AND_OUT_TYPE is unsigned integer, use this:
|
||||
*/
|
||||
const IN_AND_OUT_TYPE newval =
|
||||
.5
|
||||
+
|
||||
w_times_z_over_sixteen * tre_thr
|
||||
+
|
||||
x_times_z_over_sixteen * tre_thrfou
|
||||
+
|
||||
w_times_y_over_sixteen * trequa_thr
|
||||
+
|
||||
x_times_y_over_sixteen * trequa_thrfou;
|
||||
*r1 = tre_thr;
|
||||
*r2 = tre_thrfou;
|
||||
*r3 = trequa_thr;
|
||||
*r4 = trequa_thrfou;
|
||||
}
|
||||
|
||||
/*
|
||||
* If the IN_AND_OUT_TYPE is signed integer, use this:
|
||||
/* Interpolate for float and double types.
|
||||
*/
|
||||
const gdouble val =
|
||||
w_times_z_over_sixteen * tre_thr
|
||||
+
|
||||
x_times_z_over_sixteen * tre_thrfou
|
||||
+
|
||||
w_times_y_over_sixteen * trequa_thr
|
||||
+
|
||||
x_times_y_over_sixteen * trequa_thrfou;
|
||||
template <typename IN_AND_OUT_TYPE> static IN_AND_OUT_TYPE inline
|
||||
interpolate_float(
|
||||
const double w_times_z,
|
||||
const double x_times_z,
|
||||
const double w_times_y,
|
||||
const double x_times_y,
|
||||
const double tre_thr,
|
||||
const double tre_thrfou,
|
||||
const double trequa_thr,
|
||||
const double trequa_thrfou )
|
||||
{
|
||||
const IN_AND_OUT_TYPE newval =
|
||||
w_times_z * tre_thr +
|
||||
x_times_z * tre_thrfou +
|
||||
w_times_y * trequa_thr +
|
||||
x_times_y * trequa_thrfou;
|
||||
|
||||
return( newval );
|
||||
}
|
||||
|
||||
/* Interpolate for signed integer types.
|
||||
*/
|
||||
template <typename IN_AND_OUT_TYPE> static IN_AND_OUT_TYPE inline
|
||||
nohalo_signed(
|
||||
const double w_times_z,
|
||||
const double x_times_z,
|
||||
const double w_times_y,
|
||||
const double x_times_y,
|
||||
const double tre_thr,
|
||||
const double tre_thrfou,
|
||||
const double trequa_thr,
|
||||
const double trequa_thrfou )
|
||||
{
|
||||
const double val =
|
||||
(w_times_z / 16) * tre_thr +
|
||||
(x_times_z / 16) * tre_thrfou +
|
||||
(w_times_y / 16) * trequa_thr +
|
||||
(x_times_y / 16) * trequa_thrfou;
|
||||
|
||||
const int sign_of_val = 2 * ( val >= 0. ) - 1;
|
||||
|
||||
@ -640,7 +592,30 @@ nohalo1 (const gdouble w_times_z,
|
||||
|
||||
const IN_AND_OUT_TYPE newval = sign_of_val * rounded_abs_val;
|
||||
|
||||
return newval;
|
||||
return( newval );
|
||||
}
|
||||
|
||||
/* Interpolate for unsigned integer types.
|
||||
*/
|
||||
template <typename IN_AND_OUT_TYPE> static IN_AND_OUT_TYPE inline
|
||||
nohalo_unsigned(
|
||||
const double w_times_z,
|
||||
const double x_times_z,
|
||||
const double w_times_y,
|
||||
const double x_times_y,
|
||||
const double tre_thr,
|
||||
const double tre_thrfou,
|
||||
const double trequa_thr,
|
||||
const double trequa_thrfou )
|
||||
{
|
||||
const IN_AND_OUT_TYPE newval =
|
||||
(w_times_z / 16) * tre_thr +
|
||||
(x_times_z / 16) * tre_thrfou +
|
||||
(w_times_y / 16) * trequa_thr +
|
||||
(x_times_y / 16) * trequa_thrfou +
|
||||
0.5
|
||||
|
||||
return( newval );
|
||||
}
|
||||
|
||||
static void
|
||||
@ -890,19 +865,38 @@ gegl_sampler_yafr_get ( GeglSampler* restrict self,
|
||||
}
|
||||
|
||||
static void
|
||||
set_property (GObject* gobject,
|
||||
guint property_id,
|
||||
GValue* value,
|
||||
GParamSpec* pspec)
|
||||
vips_interpolate_nohalo_interpolate( VipsInterpolate *interpolate,
|
||||
PEL *out, REGION *in, double x, double y )
|
||||
{
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
|
||||
VipsInterpolateNohaloClass *nohalo_class =
|
||||
VIPS_INTERPOLATE_NOHALO_GET_CLASS( interpolate );
|
||||
VipsInterpolateNohalo *nohalo = VIPS_INTERPOLATE_NOHALO( interpolate );
|
||||
}
|
||||
|
||||
/* We need C linkage for this.
|
||||
*/
|
||||
extern "C" {
|
||||
G_DEFINE_TYPE( VipsInterpolateNohalo, vips_interpolate_nohalo,
|
||||
VIPS_TYPE_INTERPOLATE );
|
||||
}
|
||||
|
||||
static void
|
||||
get_property (GObject* gobject,
|
||||
guint property_id,
|
||||
GValue* value,
|
||||
GParamSpec* pspec)
|
||||
vips_interpolate_nohalo_class_init( VipsInterpolateNohaloClass *klass )
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS( klass );
|
||||
VipsObjectClass *object_class = VIPS_OBJECT_CLASS( klass );
|
||||
VipsInterpolateClass *interpolate_class =
|
||||
VIPS_INTERPOLATE_CLASS( klass );
|
||||
|
||||
object_class->nickname = "nohalo";
|
||||
object_class->description = _( "nohalo interpolation" );
|
||||
|
||||
interpolate_class->interpolate =
|
||||
vips_interpolate_nohalo_interpolate;
|
||||
interpolate_class->window_size = 5;
|
||||
}
|
||||
|
||||
static void
|
||||
vips_interpolate_nohalo_init( VipsInterpolateNohalo *nohalo )
|
||||
{
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user