static GimpBezierDesc *
gimp_brush_transform_boundary_exact (GimpBrush *brush,
gdouble scale,
gdouble aspect_ratio,
gdouble angle,
gdouble hardness)
{
const GimpTempBuf *mask;
mask = gimp_brush_transform_mask (brush, NULL,
scale, aspect_ratio, angle, hardness);
if (mask)
{
GeglBuffer *buffer;
GimpBoundSeg *bound_segs;
gint n_bound_segs;
buffer = gimp_temp_buf_create_buffer ((GimpTempBuf *) mask);
bound_segs = gimp_boundary_find (buffer, NULL,
babl_format ("Y float"),
GIMP_BOUNDARY_WITHIN_BOUNDS,
0, 0,
gegl_buffer_get_width (buffer),
gegl_buffer_get_height (buffer),
0.0,
&n_bound_segs);
g_object_unref (buffer);
if (bound_segs)
{
GimpBoundSeg *stroke_segs;
gint n_stroke_groups;
stroke_segs = gimp_boundary_sort (bound_segs, n_bound_segs,
&n_stroke_groups);
g_free (bound_segs);
if (stroke_segs)
{
GimpBezierDesc *path;
path = gimp_bezier_desc_new_from_bound_segs (stroke_segs,
n_bound_segs,
n_stroke_groups);
g_free (stroke_segs);
return path;
}
}
}
return NULL;
}
const GimpBoundSeg *
floating_sel_boundary (GimpLayer *layer,
gint *n_segs)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (gimp_layer_is_floating_sel (layer), NULL);
g_return_val_if_fail (n_segs != NULL, NULL);
if (layer->fs.boundary_known == FALSE)
{
gint width, height;
gint off_x, off_y;
width = gimp_item_get_width (GIMP_ITEM (layer));
height = gimp_item_get_height (GIMP_ITEM (layer));
gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);
if (layer->fs.segs)
g_free (layer->fs.segs);
if (gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
{
GeglBuffer *buffer;
gint i;
/* find the segments */
buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
layer->fs.segs = gimp_boundary_find (buffer, NULL,
babl_format ("A float"),
GIMP_BOUNDARY_WITHIN_BOUNDS,
0, 0, width, height,
GIMP_BOUNDARY_HALF_WAY,
&layer->fs.num_segs);
/* offset the segments */
for (i = 0; i < layer->fs.num_segs; i++)
{
layer->fs.segs[i].x1 += off_x;
layer->fs.segs[i].y1 += off_y;
layer->fs.segs[i].x2 += off_x;
layer->fs.segs[i].y2 += off_y;
}
}
else
{
layer->fs.num_segs = 4;
layer->fs.segs = g_new0 (GimpBoundSeg, 4);
/* top */
layer->fs.segs[0].x1 = off_x;
layer->fs.segs[0].y1 = off_y;
layer->fs.segs[0].x2 = off_x + width;
layer->fs.segs[0].y2 = off_y;
/* left */
layer->fs.segs[1].x1 = off_x;
layer->fs.segs[1].y1 = off_y;
layer->fs.segs[1].x2 = off_x;
layer->fs.segs[1].y2 = off_y + height;
/* right */
layer->fs.segs[2].x1 = off_x + width;
layer->fs.segs[2].y1 = off_y;
layer->fs.segs[2].x2 = off_x + width;
layer->fs.segs[2].y2 = off_y + height;
/* bottom */
layer->fs.segs[3].x1 = off_x;
layer->fs.segs[3].y1 = off_y + height;
layer->fs.segs[3].x2 = off_x + width;
layer->fs.segs[3].y2 = off_y + height;
}
layer->fs.boundary_known = TRUE;
}
*n_segs = layer->fs.num_segs;
return layer->fs.segs;
}
