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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 03:13:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 03:13:10 +0000 |
commit | 3c57dd931145d43f2b0aef96c4d178135956bf91 (patch) | |
tree | 3de698981e9f0cc2c4f9569b19a5f3595e741f6b /app/operations/gimpcageconfig.c | |
parent | Initial commit. (diff) | |
download | gimp-3c57dd931145d43f2b0aef96c4d178135956bf91.tar.xz gimp-3c57dd931145d43f2b0aef96c4d178135956bf91.zip |
Adding upstream version 2.10.36.upstream/2.10.36
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | app/operations/gimpcageconfig.c | 832 |
1 files changed, 832 insertions, 0 deletions
diff --git a/app/operations/gimpcageconfig.c b/app/operations/gimpcageconfig.c new file mode 100644 index 0000000..17548cf --- /dev/null +++ b/app/operations/gimpcageconfig.c @@ -0,0 +1,832 @@ +/* GIMP - The GNU Image Manipulation Program + * + * gimpcageconfig.c + * Copyright (C) 2010 Michael Muré <batolettre@gmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "libgimpconfig/gimpconfig.h" +#include "libgimpmath/gimpmath.h" +#include "libgimpbase/gimpbase.h" + +#include "operations-types.h" + +#include "gimpcageconfig.h" + + +/*#define DEBUG_CAGE */ + +/* This DELTA is aimed to not have handle on exact pixel during computation, + * to avoid particular case. It shouldn't be so useful, but it's a double + * safety. */ +#define DELTA 0.010309278351 + + +static void gimp_cage_config_finalize (GObject *object); +static void gimp_cage_config_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); +static void gimp_cage_config_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); + +static void gimp_cage_config_compute_scaling_factor (GimpCageConfig *gcc); +static void gimp_cage_config_compute_edges_normal (GimpCageConfig *gcc); + + +G_DEFINE_TYPE_WITH_CODE (GimpCageConfig, gimp_cage_config, + GIMP_TYPE_OPERATION_SETTINGS, + G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONFIG, + NULL)) + +#define parent_class gimp_cage_config_parent_class + +#ifdef DEBUG_CAGE +static void +print_cage (GimpCageConfig *gcc) +{ + gint i; + GeglRectangle bounding_box; + GimpCagePoint *point; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + bounding_box = gimp_cage_config_get_bounding_box (gcc); + + for (i = 0; i < gcc->cage_points->len; i++) + { + point = &g_array_index (gcc->cage_points, GimpCagePoint, i); + g_printerr ("cgx: %.0f cgy: %.0f cvdx: %.0f cvdy: %.0f sf: %.2f normx: %.2f normy: %.2f %s\n", + point->src_point.x + ((gcc->cage_mode==GIMP_CAGE_MODE_CAGE_CHANGE)?gcc->displacement_x:0), + point->src_point.y + ((gcc->cage_mode==GIMP_CAGE_MODE_CAGE_CHANGE)?gcc->displacement_y:0), + point->dest_point.x + ((gcc->cage_mode==GIMP_CAGE_MODE_DEFORM)?gcc->displacement_x:0), + point->dest_point.y + ((gcc->cage_mode==GIMP_CAGE_MODE_DEFORM)?gcc->displacement_y:0), + point->edge_scaling_factor, + point->edge_normal.x, + point->edge_normal.y, + ((point->selected) ? "S" : "NS")); + } + + g_printerr ("bounding box: x: %d y: %d width: %d height: %d\n", bounding_box.x, bounding_box.y, bounding_box.width, bounding_box.height); + g_printerr ("disp x: %f disp y: %f\n", gcc->displacement_x, gcc->displacement_y); + g_printerr ("done\n"); +} +#endif + +static void +gimp_cage_config_class_init (GimpCageConfigClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->set_property = gimp_cage_config_set_property; + object_class->get_property = gimp_cage_config_get_property; + + object_class->finalize = gimp_cage_config_finalize; +} + +static void +gimp_cage_config_init (GimpCageConfig *self) +{ + /*pre-allocation for 50 vertices for the cage.*/ + self->cage_points = g_array_sized_new (FALSE, FALSE, sizeof(GimpCagePoint), 50); +} + +static void +gimp_cage_config_finalize (GObject *object) +{ + GimpCageConfig *gcc = GIMP_CAGE_CONFIG (object); + + g_array_free (gcc->cage_points, TRUE); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static void +gimp_cage_config_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + switch (property_id) + { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_cage_config_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + switch (property_id) + { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +/** + * gimp_cage_config_get_n_points: + * @gcc: the cage config + * + * Returns: the number of points of the cage + */ +guint +gimp_cage_config_get_n_points (GimpCageConfig *gcc) +{ + return gcc->cage_points->len; +} + +/** + * gimp_cage_config_add_cage_point: + * @gcc: the cage config + * @x: x value of the new point + * @y: y value of the new point + * + * Add a new point in the last index of the polygon of the cage. + * Point is added in both source and destination cage + */ +void +gimp_cage_config_add_cage_point (GimpCageConfig *gcc, + gdouble x, + gdouble y) +{ + gimp_cage_config_insert_cage_point (gcc, gcc->cage_points->len, x, y); +} + +/** + * gimp_cage_config_insert_cage_point: + * @gcc: the cage config + * @point_number: index where the point will be inserted + * @x: x value of the new point + * @y: y value of the new point + * + * Insert a new point in the polygon of the cage at the given index. + * Point is added in both source and destination cage + */ +void +gimp_cage_config_insert_cage_point (GimpCageConfig *gcc, + gint point_number, + gdouble x, + gdouble y) +{ + GimpCagePoint point; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + g_return_if_fail (point_number <= gcc->cage_points->len); + g_return_if_fail (point_number >= 0); + + point.src_point.x = x + DELTA; + point.src_point.y = y + DELTA; + + point.dest_point.x = x + DELTA; + point.dest_point.y = y + DELTA; + + g_array_insert_val (gcc->cage_points, point_number, point); + + gimp_cage_config_compute_scaling_factor (gcc); + gimp_cage_config_compute_edges_normal (gcc); +} + +/** + * gimp_cage_config_remove_last_cage_point: + * @gcc: the cage config + * + * Remove the last point of the cage, in both source and destination cage + */ +void +gimp_cage_config_remove_last_cage_point (GimpCageConfig *gcc) +{ + gimp_cage_config_remove_cage_point (gcc, gcc->cage_points->len - 1); +} + +/** + * gimp_cage_config_remove_cage_point: + * @gcc: the cage config + * @point_number: the index of the point to remove + * + * Remove the given point from the cage + */ +void +gimp_cage_config_remove_cage_point (GimpCageConfig *gcc, + gint point_number) +{ + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + g_return_if_fail (point_number < gcc->cage_points->len); + g_return_if_fail (point_number >= 0); + + if (gcc->cage_points->len > 0) + g_array_remove_index (gcc->cage_points, gcc->cage_points->len - 1); + + gimp_cage_config_compute_scaling_factor (gcc); + gimp_cage_config_compute_edges_normal (gcc); +} + +/** + * gimp_cage_config_remove_selected_points: + * @gcc: the cage config + * + * Remove all the selected points from the cage + */ +void +gimp_cage_config_remove_selected_points (GimpCageConfig *gcc) +{ + gint i; + GimpCagePoint *point; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + for (i = 0; i < gcc->cage_points->len; i++) + { + point = &g_array_index (gcc->cage_points, GimpCagePoint, i); + + if (point->selected) + { + g_array_remove_index (gcc->cage_points, i); + i--; + } + } + + gimp_cage_config_compute_scaling_factor (gcc); + gimp_cage_config_compute_edges_normal (gcc); +} + +/** + * gimp_cage_config_get_point_coordinate: + * @gcc: the cage config + * @mode: the actual mode of the cage, GIMP_CAGE_MODE_CAGE_CHANGE or GIMP_CAGE_MODE_DEFORM + * @point_number: the index of the point to return + * + * Returns: the real position of the given point, as a GimpVector2 + */ +GimpVector2 +gimp_cage_config_get_point_coordinate (GimpCageConfig *gcc, + GimpCageMode mode, + gint point_number) +{ + GimpVector2 result = { 0.0, 0.0 }; + GimpCagePoint *point; + + g_return_val_if_fail (GIMP_IS_CAGE_CONFIG (gcc), result); + g_return_val_if_fail (point_number < gcc->cage_points->len, result); + g_return_val_if_fail (point_number >= 0, result); + + point = &g_array_index (gcc->cage_points, GimpCagePoint, point_number); + + if (point->selected) + { + if (mode == GIMP_CAGE_MODE_CAGE_CHANGE) + { + result.x = point->src_point.x + gcc->displacement_x; + result.y = point->src_point.y + gcc->displacement_y; + } + else + { + result.x = point->dest_point.x + gcc->displacement_x; + result.y = point->dest_point.y + gcc->displacement_y; + } + } + else + { + if (mode == GIMP_CAGE_MODE_CAGE_CHANGE) + { + result.x = point->src_point.x; + result.y = point->src_point.y; + } + else + { + result.x = point->dest_point.x; + result.y = point->dest_point.y; + } + } + + return result; +} + +/** + * gimp_cage_config_add_displacement: + * @gcc: the cage config + * @mode: the actual mode of the cage, GIMP_CAGE_MODE_CAGE_CHANGE or GIMP_CAGE_MODE_DEFORM + * @point_number: the point of the cage to move + * @x: x displacement value + * @y: y displacement value + * + * Add a displacement for all selected points of the cage. + * This displacement need to be committed to become effective. + */ +void +gimp_cage_config_add_displacement (GimpCageConfig *gcc, + GimpCageMode mode, + gdouble x, + gdouble y) +{ + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + gcc->cage_mode = mode; + gcc->displacement_x = x; + gcc->displacement_y = y; + + #ifdef DEBUG_CAGE + print_cage (gcc); + #endif +} + +/** + * gimp_cage_config_commit_displacement: + * @gcc: the cage config + * + * Apply the displacement to the cage + */ +void +gimp_cage_config_commit_displacement (GimpCageConfig *gcc) +{ + gint i; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + for (i = 0; i < gcc->cage_points->len; i++) + { + GimpCagePoint *point; + point = &g_array_index (gcc->cage_points, GimpCagePoint, i); + + if (point->selected) + { + if (gcc->cage_mode == GIMP_CAGE_MODE_CAGE_CHANGE) + { + point->src_point.x += gcc->displacement_x; + point->src_point.y += gcc->displacement_y; + point->dest_point.x += gcc->displacement_x; + point->dest_point.y += gcc->displacement_y; + } + else + { + point->dest_point.x += gcc->displacement_x; + point->dest_point.y += gcc->displacement_y; + } + } + } + + gimp_cage_config_compute_scaling_factor (gcc); + gimp_cage_config_compute_edges_normal (gcc); + gimp_cage_config_reset_displacement (gcc); +} + +/** + * gimp_cage_config_reset_displacement: + * @gcc: the cage config + * + * Set the displacement to zero. + */ +void +gimp_cage_config_reset_displacement (GimpCageConfig *gcc) +{ + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + gcc->displacement_x = 0.0; + gcc->displacement_y = 0.0; +} + +/** + * gimp_cage_config_get_bounding_box: + * @gcc: the cage config + * + * Compute the bounding box of the source cage + * + * Returns: the bounding box of the source cage, as a GeglRectangle + */ +GeglRectangle +gimp_cage_config_get_bounding_box (GimpCageConfig *gcc) +{ + GeglRectangle bounding_box = { 0, 0, 0, 0}; + gint i; + GimpCagePoint *point; + + g_return_val_if_fail (GIMP_IS_CAGE_CONFIG (gcc), bounding_box); + + if (gcc->cage_points->len == 0) + return bounding_box; + + point = &g_array_index (gcc->cage_points, GimpCagePoint, 0); + + if (point->selected) + { + bounding_box.x = point->src_point.x + gcc->displacement_x; + bounding_box.y = point->src_point.y + gcc->displacement_y; + } + else + { + bounding_box.x = point->src_point.x; + bounding_box.y = point->src_point.y; + } + + for (i = 1; i < gcc->cage_points->len; i++) + { + gdouble x,y; + point = &g_array_index (gcc->cage_points, GimpCagePoint, i); + + if (point->selected) + { + x = point->src_point.x + gcc->displacement_x; + y = point->src_point.y + gcc->displacement_y; + } + else + { + x = point->src_point.x; + y = point->src_point.y; + } + + if (x < bounding_box.x) + { + bounding_box.width += bounding_box.x - x; + bounding_box.x = x; + } + + if (y < bounding_box.y) + { + bounding_box.height += bounding_box.y - y; + bounding_box.y = y; + } + + if (x > bounding_box.x + bounding_box.width) + { + bounding_box.width = x - bounding_box.x; + } + + if (y > bounding_box.y + bounding_box.height) + { + bounding_box.height = y - bounding_box.y; + } + } + + return bounding_box; +} + +/** + * gimp_cage_config_reverse_cage: + * @gcc: the cage config + * + * When using non-simple cage (like a cage in 8), user may want to + * manually inverse inside and outside of the cage. This function + * reverse the cage + */ +void +gimp_cage_config_reverse_cage (GimpCageConfig *gcc) +{ + GimpCagePoint temp; + gint i; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + for (i = 0; i < gcc->cage_points->len / 2; i++) + { + temp = g_array_index (gcc->cage_points, GimpCagePoint, i); + + g_array_index (gcc->cage_points, GimpCagePoint, i) = + g_array_index (gcc->cage_points, GimpCagePoint, gcc->cage_points->len - i - 1); + + g_array_index (gcc->cage_points, GimpCagePoint, gcc->cage_points->len - i - 1) = temp; + } + + gimp_cage_config_compute_scaling_factor (gcc); + gimp_cage_config_compute_edges_normal (gcc); +} + +/** + * gimp_cage_config_reverse_cage_if_needed: + * @gcc: the cage config + * + * Since the cage need to be defined counter-clockwise to have the + * topological inside in the actual 'physical' inside of the cage, + * this function compute if the cage is clockwise or not, and reverse + * the cage if needed. + * + * This function does not take into account an eventual displacement + */ +void +gimp_cage_config_reverse_cage_if_needed (GimpCageConfig *gcc) +{ + gint i; + gdouble sum; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + sum = 0.0; + + /* this is a bit crappy, but should works most of the case */ + /* we do the sum of the projection of each point to the previous + segment, and see the final sign */ + for (i = 0; i < gcc->cage_points->len ; i++) + { + GimpVector2 P1, P2, P3; + gdouble z; + + P1 = (g_array_index (gcc->cage_points, GimpCagePoint, i)).src_point; + P2 = (g_array_index (gcc->cage_points, GimpCagePoint, (i+1) % gcc->cage_points->len)).src_point; + P3 = (g_array_index (gcc->cage_points, GimpCagePoint, (i+2) % gcc->cage_points->len)).src_point; + + z = P1.x * (P2.y - P3.y) + P2.x * (P3.y - P1.y) + P3.x * (P1.y - P2.y); + + sum += z; + } + + /* sum > 0 mean a cage defined counter-clockwise, so we reverse it */ + if (sum > 0) + { + gimp_cage_config_reverse_cage (gcc); + } +} + +/** + * gimp_cage_config_compute_scaling_factor: + * @gcc: the cage config + * + * Update Green Coordinate scaling factor for the destination cage. + * This function does not take into account an eventual displacement. + */ +static void +gimp_cage_config_compute_scaling_factor (GimpCageConfig *gcc) +{ + GimpVector2 edge; + gdouble length, length_d; + gint i; + GimpCagePoint *current, *last; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + if (gcc->cage_points->len < 2) + return; + + last = &g_array_index (gcc->cage_points, GimpCagePoint, 0); + + for (i = 1; i <= gcc->cage_points->len; i++) + { + current = &g_array_index (gcc->cage_points, GimpCagePoint, i % gcc->cage_points->len); + + gimp_vector2_sub (&edge, + &(last->src_point), + &(current->src_point)); + length = gimp_vector2_length (&edge); + + gimp_vector2_sub (&edge, + &(last->dest_point), + &(current->dest_point)); + length_d = gimp_vector2_length (&edge); + + last->edge_scaling_factor = length_d / length; + last = current; + } +} + +/** + * gimp_cage_config_compute_edges_normal: + * @gcc: the cage config + * + * Update edges normal for the destination cage. + * This function does not take into account an eventual displacement. + */ +static void +gimp_cage_config_compute_edges_normal (GimpCageConfig *gcc) +{ + GimpVector2 normal; + gint i; + GimpCagePoint *current, *last; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + last = &g_array_index (gcc->cage_points, GimpCagePoint, 0); + + for (i = 1; i <= gcc->cage_points->len; i++) + { + current = &g_array_index (gcc->cage_points, GimpCagePoint, i % gcc->cage_points->len); + + gimp_vector2_sub (&normal, + &(current->dest_point), + &(last->dest_point)); + + last->edge_normal = gimp_vector2_normal (&normal); + last = current; + } +} + +/** + * gimp_cage_config_point_inside: + * @gcc: the cage config + * @x: x coordinate of the point to test + * @y: y coordinate of the point to test + * + * Check if the given point is inside the cage. This test is done in + * the regard of the topological inside of the source cage. + * + * Returns: TRUE if the point is inside, FALSE if not. + * This function does not take into account an eventual displacement. + */ +gboolean +gimp_cage_config_point_inside (GimpCageConfig *gcc, + gfloat x, + gfloat y) +{ + GimpVector2 *last, *current; + gboolean inside = FALSE; + gint i; + + g_return_val_if_fail (GIMP_IS_CAGE_CONFIG (gcc), FALSE); + + last = &((g_array_index (gcc->cage_points, GimpCagePoint, gcc->cage_points->len - 1)).src_point); + + for (i = 0; i < gcc->cage_points->len; i++) + { + current = &((g_array_index (gcc->cage_points, GimpCagePoint, i)).src_point); + + if ((((current->y <= y) && (y < last->y)) + || ((last->y <= y) && (y < current->y))) + && (x < (last->x - current->x) * (y - current->y) / (last->y - current->y) + current->x)) + { + inside = !inside; + } + + last = current; + } + + return inside; +} + +/** + * gimp_cage_config_select_point: + * @gcc: the cage config + * @point_number: the index of the point to select + * + * Select the given point of the cage, and deselect the others. + */ +void +gimp_cage_config_select_point (GimpCageConfig *gcc, + gint point_number) +{ + gint i; + GimpCagePoint *point; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + g_return_if_fail (point_number < gcc->cage_points->len); + g_return_if_fail (point_number >= 0); + + for (i = 0; i < gcc->cage_points->len; i++) + { + point = &g_array_index (gcc->cage_points, GimpCagePoint, i); + + if (i == point_number) + { + point->selected = TRUE; + } + else + { + point->selected = FALSE; + } + } +} + +/** + * gimp_cage_config_select_area: + * @gcc: the cage config + * @mode: the actual mode of the cage, GIMP_CAGE_MODE_CAGE_CHANGE or GIMP_CAGE_MODE_DEFORM + * @area: the area to select + * + * Select cage's point inside the given area and deselect others + */ +void +gimp_cage_config_select_area (GimpCageConfig *gcc, + GimpCageMode mode, + GeglRectangle area) +{ + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + gimp_cage_config_deselect_points (gcc); + gimp_cage_config_select_add_area (gcc, mode, area); +} + +/** + * gimp_cage_config_select_add_area: + * @gcc: the cage config + * @mode: the actual mode of the cage, GIMP_CAGE_MODE_CAGE_CHANGE or GIMP_CAGE_MODE_DEFORM + * @area: the area to select + * + * Select cage's point inside the given area. Already selected point stay selected. + */ +void +gimp_cage_config_select_add_area (GimpCageConfig *gcc, + GimpCageMode mode, + GeglRectangle area) +{ + gint i; + GimpCagePoint *point; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + for (i = 0; i < gcc->cage_points->len; i++) + { + point = &g_array_index (gcc->cage_points, GimpCagePoint, i); + + if (mode == GIMP_CAGE_MODE_CAGE_CHANGE) + { + if (point->src_point.x >= area.x && + point->src_point.x <= area.x + area.width && + point->src_point.y >= area.y && + point->src_point.y <= area.y + area.height) + { + point->selected = TRUE; + } + } + else + { + if (point->dest_point.x >= area.x && + point->dest_point.x <= area.x + area.width && + point->dest_point.y >= area.y && + point->dest_point.y <= area.y + area.height) + { + point->selected = TRUE; + } + } + } +} + +/** + * gimp_cage_config_toggle_point_selection: + * @gcc: the cage config + * @point_number: the index of the point to toggle selection + * + * Toggle the selection of the given cage point + */ +void +gimp_cage_config_toggle_point_selection (GimpCageConfig *gcc, + gint point_number) +{ + GimpCagePoint *point; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + g_return_if_fail (point_number < gcc->cage_points->len); + g_return_if_fail (point_number >= 0); + + point = &g_array_index (gcc->cage_points, GimpCagePoint, point_number); + point->selected = ! point->selected; +} + +/** + * gimp_cage_deselect_points: + * @gcc: the cage config + * + * Deselect all cage points. + */ +void +gimp_cage_config_deselect_points (GimpCageConfig *gcc) +{ + gint i; + + g_return_if_fail (GIMP_IS_CAGE_CONFIG (gcc)); + + for (i = 0; i < gcc->cage_points->len; i++) + { + (g_array_index (gcc->cage_points, GimpCagePoint, i)).selected = FALSE; + } +} + +/** + * gimp_cage_config_point_is_selected: + * @gcc: the cage config + * @point_number: the index of the point to test + * + * Returns: TRUE if the point is selected, FALSE otherwise. + */ +gboolean +gimp_cage_config_point_is_selected (GimpCageConfig *gcc, + gint point_number) +{ + GimpCagePoint *point; + + g_return_val_if_fail (GIMP_IS_CAGE_CONFIG (gcc), FALSE); + g_return_val_if_fail (point_number < gcc->cage_points->len, FALSE); + g_return_val_if_fail (point_number >= 0, FALSE); + + point = &(g_array_index (gcc->cage_points, GimpCagePoint, point_number)); + + return point->selected; +} |