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app: add gimp_bezier_desc_translate() which translates all points 

Also add back an internal "gboolean closed" parameter which I removed
when copying the function, it might be useful later and doesn't hurt.
This commit is contained in:
Michael Natterer 2011-04-10 19:16:31 +02:00
parent 1a4ffb3d21
commit 8c3698eccc
2 changed files with 30 additions and 6 deletions
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32
app/core/gimpbezierdesc.c
View File

@ -63,7 +63,8 @@ gimp_bezier_desc_new (cairo_path_data_t *data,
static void static void
add_polyline (GArray *path_data, add_polyline (GArray *path_data,
const GimpVector2 *points, const GimpVector2 *points,
guint n_points) gint n_points,
gboolean closed)
{ {
GimpVector2 prev = { 0.0, 0.0, }; GimpVector2 prev = { 0.0, 0.0, };
cairo_path_data_t pd; cairo_path_data_t pd;
@ -90,11 +91,14 @@ add_polyline (GArray *path_data,
} }
} }
/* close the polyline */ /* close the polyline when needed */
pd.header.type = CAIRO_PATH_CLOSE_PATH; if (closed)
pd.header.length = 1; {
pd.header.type = CAIRO_PATH_CLOSE_PATH;
pd.header.length = 1;
g_array_append_val (path_data, pd); g_array_append_val (path_data, pd);
}
} }
GimpBezierDesc * GimpBezierDesc *
@ -142,7 +146,7 @@ gimp_bezier_desc_new_from_bound_segs (BoundSeg *bound_segs,
n_points++; n_points++;
add_polyline (path_data, points, n_points); add_polyline (path_data, points, n_points, TRUE);
n_points = 0; n_points = 0;
seg++; seg++;
@ -159,6 +163,22 @@ gimp_bezier_desc_new_from_bound_segs (BoundSeg *bound_segs,
path_data->len); path_data->len);
} }
void
gimp_bezier_desc_translate (GimpBezierDesc *desc,
gdouble offset_x,
gdouble offset_y)
{
gint i;
g_return_if_fail (desc != NULL);
for (i = 0; i < desc->num_data; i++)
{
desc->data[i].point.x += offset_x;
desc->data[i].point.y += offset_y;
}
}
GimpBezierDesc * GimpBezierDesc *
gimp_bezier_desc_copy (const GimpBezierDesc *desc) gimp_bezier_desc_copy (const GimpBezierDesc *desc)
{ {

4
app/core/gimpbezierdesc.h
View File

@ -36,6 +36,10 @@ GimpBezierDesc * gimp_bezier_desc_new_from_bound_segs (BoundSeg *bou
gint n_bound_segs, gint n_bound_segs,
gint n_bound_groups); gint n_bound_groups);
void gimp_bezier_desc_translate (GimpBezierDesc *desc,
gdouble offset_x,
gdouble offset_y);
GimpBezierDesc * gimp_bezier_desc_copy (const GimpBezierDesc *desc); GimpBezierDesc * gimp_bezier_desc_copy (const GimpBezierDesc *desc);
void gimp_bezier_desc_free (GimpBezierDesc *desc); void gimp_bezier_desc_free (GimpBezierDesc *desc);