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Issue #4484: Add reflection option for mandala symmetry

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(cherry picked from commit 36dd48aea6)
This commit is contained in:
Elad Shahar
2020-01-11 07:51:27 +02:00
committed by Jehan
parent bed9294c97
commit ec10b37421
2 changed files with 26 additions and 1 deletions
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26
app/core/gimpsymmetry-mandala.c
View File

@ -51,6 +51,7 @@ enum
PROP_CENTER_Y,
PROP_SIZE,
PROP_DISABLE_TRANSFORMATION,
PROP_ENABLE_REFLECTION,
};
@ -154,6 +155,14 @@ gimp_mandala_class_init (GimpMandalaClass *klass)
FALSE,
GIMP_PARAM_STATIC_STRINGS |
GIMP_SYMMETRY_PARAM_GUI);
GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_ENABLE_REFLECTION,
"enable-reflection",
_("Enable reflection"),
_("Enable reflection"),
FALSE,
GIMP_PARAM_STATIC_STRINGS |
GIMP_SYMMETRY_PARAM_GUI);
}
static void
@ -243,6 +252,10 @@ gimp_mandala_set_property (GObject *object,
mandala->disable_transformation = g_value_get_boolean (value);
break;
case PROP_ENABLE_REFLECTION:
mandala->enable_reflection = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -271,6 +284,9 @@ gimp_mandala_get_property (GObject *object,
case PROP_DISABLE_TRANSFORMATION:
g_value_set_boolean (value, mandala->disable_transformation);
break;
case PROP_ENABLE_REFLECTION:
g_value_set_boolean (value, mandala->enable_reflection);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -457,7 +473,15 @@ gimp_mandala_update_strokes (GimpSymmetry *sym,
gimp_matrix3_translate (&matrix,
- mandala->center_x,
- mandala->center_y);
gimp_matrix3_rotate (&matrix, - i * 2.0 * G_PI / (gdouble) mandala->size);
if ( mandala->enable_reflection && i % 2 == 1 )
{
gimp_matrix3_scale (&matrix, -1, 1);
gimp_matrix3_rotate (&matrix, G_PI - (i+1) * 2.0 * G_PI / (gdouble) mandala->size);
}
else
{
gimp_matrix3_rotate (&matrix, - i * 2.0 * G_PI / (gdouble) mandala->size);
}
gimp_matrix3_translate (&matrix,
mandala->center_x,
mandala->center_y);

1
app/core/gimpsymmetry-mandala.h
View File

@ -43,6 +43,7 @@ struct _GimpMandala
gdouble center_y;
gint size;
gboolean disable_transformation;
gboolean enable_reflection;
GimpGuide *horizontal_guide;
GimpGuide *vertical_guide;