b05cfc6050
It never belonged inside "tools". Also rename its "pdb" subdirectory to "groups". This had to happen before 2.10 so cherry-picking between branches doesn't become a nightmare in the future.
695 lines
24 KiB
Text
695 lines
24 KiB
Text
# GIMP - The GNU Image Manipulation Program
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# Copyright (C) 1995 Spencer Kimball and Peter Mattis
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# "Perlized" from C source by Manish Singh <yosh@gimp.org>
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# Item Transformations
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# shortcuts
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sub transform_invoke {
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my ($progress_text, $assemble_matrix, $check) = @_;
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my $success_check = 'gimp_pdb_item_is_attached (item, NULL,
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GIMP_PDB_ITEM_CONTENT |
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GIMP_PDB_ITEM_POSITION, error);';
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if ($check) {
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$success_check = "(gimp_pdb_item_is_attached (item, NULL,
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GIMP_PDB_ITEM_CONTENT |
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GIMP_PDB_ITEM_POSITION, error) && " . $check . ");";
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}
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%invoke = (
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code => <<"CODE"
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{
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gint x, y, width, height;
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success = $success_check
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if (success &&
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gimp_item_mask_intersect (item, &x, &y, &width, &height))
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{
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GimpPDBContext *pdb_context = GIMP_PDB_CONTEXT (context);
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GimpMatrix3 matrix;
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gint off_x, off_y;
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gimp_item_get_offset (item, &off_x, &off_y);
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x += off_x;
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y += off_y;
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/* Assemble the transformation matrix */
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$assemble_matrix
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if (progress)
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gimp_progress_start (progress, FALSE, _(\"$progress_text\"));
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if (GIMP_IS_DRAWABLE (item) &&
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! gimp_viewable_get_children (GIMP_VIEWABLE (item)) &&
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! gimp_channel_is_empty (gimp_image_get_mask (gimp_item_get_image (item))))
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{
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GimpDrawable *drawable;
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drawable = gimp_drawable_transform_affine (GIMP_DRAWABLE (item),
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context, &matrix,
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pdb_context->transform_direction,
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pdb_context->interpolation,
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pdb_context->transform_resize,
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progress);
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if (drawable)
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item = GIMP_ITEM (drawable);
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else
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success = FALSE;
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}
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else
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{
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gimp_item_transform (item, context, &matrix,
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pdb_context->transform_direction,
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pdb_context->interpolation,
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pdb_context->transform_resize,
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progress);
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}
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if (progress)
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gimp_progress_end (progress);
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}
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}
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CODE
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)
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}
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# The defs
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sub item_transform_flip_simple {
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$blurb = <<'BLURB';
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Flip the specified item either vertically or horizontally.
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BLURB
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$help = <<'HELP';
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This procedure flips the specified item. If a selection exists and the
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item is a drawable, the portion of the drawable which lies under the
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selection is cut from the drawable and made into a floating selection
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which is then flipped. If auto_center is set to TRUE, the flip is
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around the selection's center. Otherwise, the coordinate of the axis
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needs to be specified. The return value is the ID of the flipped
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item. If there was no selection or the item is not a drawable, this
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will be equal to the item ID supplied as input. Otherwise, this will
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be the newly created and flipped drawable.
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This procedure is affected by the following context setters:
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gimp_context_set_transform_resize().
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HELP
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&mitch_pdb_misc('2004', '2.2');
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@inargs = (
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{ name => 'item', type => 'item',
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desc => 'The affected item' },
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{ name => 'flip_type',
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type => 'enum GimpOrientationType (no GIMP_ORIENTATION_UNKNOWN)',
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desc => 'Type of flip' },
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{ name => 'auto_center', type => 'boolean',
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desc => 'Whether to automatically position the axis in the selection center' },
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{ name => 'axis', type => 'float',
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desc => 'coord. of flip axis' }
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);
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@outargs = (
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{ name => 'item', type => 'item', no_declare => 1,
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desc => 'The flipped item' }
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);
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%invoke = (
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code => <<'CODE'
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{
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gint x, y, width, height;
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success = gimp_pdb_item_is_attached (item, NULL,
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GIMP_PDB_ITEM_CONTENT |
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GIMP_PDB_ITEM_POSITION, error);
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if (success &&
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gimp_item_mask_intersect (item, &x, &y, &width, &height))
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{
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GimpPDBContext *pdb_context = GIMP_PDB_CONTEXT (context);
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gint off_x, off_y;
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gimp_item_get_offset (item, &off_x, &off_y);
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x += off_x;
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y += off_y;
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gimp_transform_get_flip_axis (x, y, width, height,
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flip_type, auto_center, &axis);
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if (GIMP_IS_DRAWABLE (item) &&
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! gimp_viewable_get_children (GIMP_VIEWABLE (item)) &&
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! gimp_channel_is_empty (gimp_image_get_mask (gimp_item_get_image (item))))
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{
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GimpDrawable *drawable;
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drawable = gimp_drawable_transform_flip (GIMP_DRAWABLE (item), context,
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flip_type, axis,
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pdb_context->transform_resize);
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if (drawable)
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item = GIMP_ITEM (drawable);
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else
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success = FALSE;
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}
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else
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{
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gimp_item_flip (item, context,
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flip_type, axis,
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pdb_context->transform_resize);
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}
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}
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}
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CODE
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);
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}
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sub item_transform_flip {
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$blurb = <<'BLURB';
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Flip the specified item around a given line.
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BLURB
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$help = <<'HELP';
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This procedure flips the specified item. If a selection exists and the
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item is a drawable , the portion of the drawable which lies under the
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selection is cut from the drawable and made into a floating selection
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which is then flipped. The axis to flip around is specified by
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specifying two points from that line. The return value is the ID of
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the flipped item. If there was no selection or the item is not a
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drawable, this will be equal to the item ID supplied as input.
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Otherwise, this will be the newly created and flipped drawable.
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This procedure is affected by the following context setters:
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gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
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gimp_context_set_transform_resize().
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HELP
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&mitch_pdb_misc('2010', '2.8');
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@inargs = (
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{ name => 'item', type => 'item',
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desc => 'The affected item' },
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{ name => 'x0', type => 'float',
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desc => 'horz. coord. of one end of axis' },
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{ name => 'y0', type => 'float',
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desc => 'vert. coord. of one end of axis' },
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{ name => 'x1', type => 'float',
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desc => 'horz. coord. of other end of axis' },
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{ name => 'y1', type => 'float',
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desc => 'vert. coord. of other end of axis' }
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);
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@outargs = (
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{ name => 'item', type => 'item', no_declare => 1,
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desc => 'The flipped item' }
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);
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transform_invoke ("Flipping", <<CODE);
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gimp_matrix3_identity (&matrix);
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gimp_transform_matrix_flip_free (&matrix, x0, y0, x1, y1);
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CODE
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}
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sub item_transform_perspective {
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$blurb = <<'BLURB';
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Perform a possibly non-affine transformation on the specified item.
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BLURB
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$help = <<'HELP';
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This procedure performs a possibly non-affine transformation on the
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specified item by allowing the corners of the original bounding box to
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be arbitrarily remapped to any values. The specified item is remapped
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if no selection exists or it is not a drawable. However, if a
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selection exists and the item is a drawable, the portion of the
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drawable which lies under the selection is cut from the drawable and
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made into a floating selection which is then remapped as
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specified. The return value is the ID of the remapped item. If there
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was no selection or the item is not a drawable, this will be equal to
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the item ID supplied as input. Otherwise, this will be the newly
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created and remapped drawable. The 4 coordinates specify the new
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locations of each corner of the original bounding box. By specifying
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these values, any affine transformation (rotation, scaling,
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translation) can be affected. Additionally, these values can be
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specified such that the resulting transformed item will appear to
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have been projected via a perspective transform.
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This procedure is affected by the following context setters:
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gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
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gimp_context_set_transform_resize().
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HELP
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&mitch_pdb_misc('2010', '2.8');
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@inargs = (
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{ name => 'item', type => 'item',
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desc => 'The affected item' },
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{ name => 'x0', type => 'float',
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desc => 'The new x coordinate of upper-left corner of original
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bounding box' },
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{ name => 'y0', type => 'float',
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desc => 'The new y coordinate of upper-left corner of original
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bounding box' },
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{ name => 'x1', type => 'float',
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desc => 'The new x coordinate of upper-right corner of original
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bounding box' },
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{ name => 'y1', type => 'float',
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desc => 'The new y coordinate of upper-right corner of original
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bounding box' },
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{ name => 'x2', type => 'float',
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desc => 'The new x coordinate of lower-left corner of original
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bounding box' },
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{ name => 'y2', type => 'float',
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desc => 'The new y coordinate of lower-left corner of original
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bounding box' },
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{ name => 'x3', type => 'float',
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desc => 'The new x coordinate of lower-right corner of original
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bounding box' },
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{ name => 'y3', type => 'float',
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desc => 'The new y coordinate of lower-right corner of original
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bounding box' }
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);
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@outargs = (
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{ name => 'item', type => 'item', no_declare => 1,
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desc => 'The newly mapped item' }
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);
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transform_invoke ("Perspective", <<CODE);
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gimp_matrix3_identity (&matrix);
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gimp_transform_matrix_perspective (&matrix,
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x, y, width, height,
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x0, y0, x1, y1,
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x2, y2, x3, y3);
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CODE
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}
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sub item_transform_rotate_simple {
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$blurb = <<'BLURB';
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Rotate the specified item about given coordinates through the specified angle.
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BLURB
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$help = <<'HELP';
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This function rotates the specified item. If a selection exists and
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the item is a drawable, the portion of the drawable which lies under
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the selection is cut from the drawable and made into a floating
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selection which is then rotated by the specified amount. The return
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value is the ID of the rotated item. If there was no selection or the
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item is not a drawable, this will be equal to the item ID supplied as
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input. Otherwise, this will be the newly created and rotated drawable.
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This procedure is affected by the following context setters:
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gimp_context_set_transform_resize().
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HELP
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&mitch_pdb_misc('2010', '2.8');
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@inargs = (
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{ name => 'item', type => 'item',
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desc => 'The affected item' },
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{ name => 'rotate_type', type => 'enum GimpRotationType',
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desc => 'Type of rotation' },
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{ name => 'auto_center', type => 'boolean',
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desc => 'Whether to automatically rotate around the selection center' },
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{ name => 'center_x', type => 'float',
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desc => 'The hor. coordinate of the center of rotation' },
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{ name => 'center_y', type => 'float',
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desc => 'The vert. coordinate of the center of rotation' }
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);
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@outargs = (
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{ name => 'item', type => 'item', no_declare => 1,
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desc => 'The rotated item' }
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);
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%invoke = (
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code => <<'CODE'
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{
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gint x, y, width, height;
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success = gimp_pdb_item_is_attached (item, NULL,
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GIMP_PDB_ITEM_CONTENT |
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GIMP_PDB_ITEM_POSITION, error);
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if (success &&
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gimp_item_mask_intersect (item, &x, &y, &width, &height))
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{
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GimpPDBContext *pdb_context = GIMP_PDB_CONTEXT (context);
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gint off_x, off_y;
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gimp_item_get_offset (item, &off_x, &off_y);
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x += off_x;
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y += off_y;
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gimp_transform_get_rotate_center (x, y, width, height,
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auto_center, ¢er_x, ¢er_y);
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if (GIMP_IS_DRAWABLE (item) &&
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! gimp_viewable_get_children (GIMP_VIEWABLE (item)) &&
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! gimp_channel_is_empty (gimp_image_get_mask (gimp_item_get_image (item))))
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{
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GimpDrawable *drawable;
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drawable = gimp_drawable_transform_rotate (GIMP_DRAWABLE (item),
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context,
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rotate_type,
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center_x, center_y,
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pdb_context->transform_resize);
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if (drawable)
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item = GIMP_ITEM (drawable);
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else
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success = FALSE;
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}
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else
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{
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gimp_item_rotate (item, context,
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rotate_type,
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center_x, center_y,
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pdb_context->transform_resize);
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}
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}
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}
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CODE
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);
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}
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sub item_transform_rotate {
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$blurb = <<'BLURB';
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Rotate the specified item about given coordinates through the
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specified angle.
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BLURB
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$help = <<'HELP';
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This function rotates the specified item. If a selection exists and
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the item is a drawable, the portion of the drawable which lies under
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the selection is cut from the drawable and made into a floating
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selection which is then rotated by the specified amount. The return
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value is the ID of the rotated item. If there was no selection or the
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item is not a drawable, this will be equal to the item ID supplied as
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input. Otherwise, this will be the newly created and rotated drawable.
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This procedure is affected by the following context setters:
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gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
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gimp_context_set_transform_resize().
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HELP
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&mitch_pdb_misc('2010', '2.8');
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@inargs = (
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{ name => 'item', type => 'item',
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desc => 'The affected item' },
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{ name => 'angle', type => 'float',
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desc => 'The angle of rotation (radians)' },
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{ name => 'auto_center', type => 'boolean',
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desc => 'Whether to automatically rotate around the selection center' },
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{ name => 'center_x', type => 'float',
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desc => 'The hor. coordinate of the center of rotation' },
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{ name => 'center_y', type => 'float',
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desc => 'The vert. coordinate of the center of rotation' }
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);
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@outargs = (
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{ name => 'item', type => 'item', no_declare => 1,
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desc => 'The rotated item' }
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);
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transform_invoke ("Rotating", <<CODE);
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gimp_matrix3_identity (&matrix);
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if (auto_center)
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gimp_transform_matrix_rotate_rect (&matrix,
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x, y, width, height, angle);
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else
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gimp_transform_matrix_rotate_center (&matrix,
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center_x, center_y, angle);
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CODE
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}
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sub item_transform_scale {
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$blurb = 'Scale the specified item.';
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$help = <<'HELP';
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This procedure scales the specified item. If a selection exists and
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the item is a drawable, the portion of the drawable which lies under
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the selection is cut from the drawable and made into a floating
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selection which is then scaled by the specified amount. The return
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value is the ID of the scaled item. If there was no selection or the
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item is not a drawable, this will be equal to the item ID supplied as
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input. Otherwise, this will be the newly created and scaled drawable.
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This procedure is affected by the following context setters:
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gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
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gimp_context_set_transform_resize().
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HELP
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&mitch_pdb_misc('2010', '2.8');
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@inargs = (
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{ name => 'item', type => 'item',
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desc => 'The affected item' },
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{ name => 'x0', type => 'float',
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desc => 'The new x coordinate of the upper-left corner of the
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scaled region' },
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{ name => 'y0', type => 'float',
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desc => 'The new y coordinate of the upper-left corner of the
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scaled region' },
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{ name => 'x1', type => 'float',
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desc => 'The new x coordinate of the lower-right corner of the
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scaled region' },
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{ name => 'y1', type => 'float',
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desc => 'The new y coordinate of the lower-right corner of the
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scaled region' }
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);
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@outargs = (
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{ name => 'item', type => 'item', no_declare => 1,
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desc => 'The scaled item' }
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);
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transform_invoke ("Scaling", <<CODE, 'x0 < x1 && y0 < y1');
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gimp_matrix3_identity (&matrix);
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gimp_transform_matrix_scale (&matrix,
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x, y, width, height,
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x0, y0, x1 - x0, y1 - y0);
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CODE
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}
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sub item_transform_shear {
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$blurb = <<'BLURB';
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Shear the specified item about its center by the specified magnitude.
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BLURB
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$help = <<'HELP';
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This procedure shears the specified item. If a selection exists and
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the item is a drawable, the portion of the drawable which lies under
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the selection is cut from the drawable and made into a floating
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selection which is then sheard by the specified amount. The return
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value is the ID of the sheard item. If there was no selection or the
|
|
item is not a drawable, this will be equal to the item ID supplied as
|
|
input. Otherwise, this will be the newly created and sheard
|
|
drawable. The shear type parameter indicates whether the shear will be
|
|
applied horizontally or vertically. The magnitude can be either
|
|
positive or negative and indicates the extent (in pixels) to shear by.
|
|
|
|
This procedure is affected by the following context setters:
|
|
gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
|
|
gimp_context_set_transform_resize().
|
|
HELP
|
|
|
|
&mitch_pdb_misc('2010', '2.8');
|
|
|
|
@inargs = (
|
|
{ name => 'item', type => 'item',
|
|
desc => 'The affected item' },
|
|
{ name => 'shear_type',
|
|
type => 'enum GimpOrientationType (no GIMP_ORIENTATION_UNKNOWN)',
|
|
desc => 'Type of shear' },
|
|
{ name => 'magnitude', type => 'float',
|
|
desc => 'The magnitude of the shear' }
|
|
);
|
|
|
|
@outargs = (
|
|
{ name => 'item', type => 'item', no_declare => 1,
|
|
desc => 'The sheared item' }
|
|
);
|
|
|
|
transform_invoke ("Shearing", <<CODE);
|
|
gimp_matrix3_identity (&matrix);
|
|
gimp_transform_matrix_shear (&matrix,
|
|
x, y, width, height,
|
|
shear_type, magnitude);
|
|
CODE
|
|
}
|
|
|
|
|
|
sub item_transform_2d {
|
|
$blurb = 'Transform the specified item in 2d.';
|
|
|
|
$help = <<'HELP';
|
|
This procedure transforms the specified item. If a selection exists
|
|
and the item is a drawable, the portion of the drawable which lies
|
|
under the selection is cut from the drawable and made into a floating
|
|
selection which is then transformed. The transformation is done by
|
|
scaling the image by the x and y scale factors about the point
|
|
(source_x, source_y), then rotating around the same point, then
|
|
translating that point to the new position (dest_x, dest_y). The
|
|
return value is the ID of the rotated drawable. If there was no
|
|
selection or the item is not a drawable, this will be equal to the
|
|
item ID supplied as input. Otherwise, this will be the newly created
|
|
and transformed drawable.
|
|
|
|
This procedure is affected by the following context setters:
|
|
gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
|
|
gimp_context_set_transform_resize().
|
|
HELP
|
|
|
|
&mitch_pdb_misc('2010', '2.8');
|
|
|
|
@inargs = (
|
|
{ name => 'item', type => 'item',
|
|
desc => 'The affected item' },
|
|
{ name => 'source_x', type => 'float',
|
|
desc => 'X coordinate of the transformation center' },
|
|
{ name => 'source_y', type => 'float',
|
|
desc => 'Y coordinate of the transformation center' },
|
|
{ name => 'scale_x', type => 'float',
|
|
desc => 'Amount to scale in x direction' },
|
|
{ name => 'scale_y', type => 'float',
|
|
desc => 'Amount to scale in y direction' },
|
|
{ name => 'angle', type => 'float',
|
|
desc => 'The angle of rotation (radians)' },
|
|
{ name => 'dest_x', type => 'float',
|
|
desc => 'X coordinate of where the center goes' },
|
|
{ name => 'dest_y', type => 'float',
|
|
desc => 'Y coordinate of where the center goes' }
|
|
);
|
|
|
|
@outargs = (
|
|
{ name => 'item', type => 'item', no_declare => 1,
|
|
desc => 'The transformed item' }
|
|
);
|
|
|
|
transform_invoke ("2D Transform", <<CODE);
|
|
gimp_matrix3_identity (&matrix);
|
|
gimp_matrix3_translate (&matrix, -source_x, -source_y);
|
|
gimp_matrix3_scale (&matrix, scale_x, scale_y);
|
|
gimp_matrix3_rotate (&matrix, angle);
|
|
gimp_matrix3_translate (&matrix, dest_x, dest_y);
|
|
CODE
|
|
}
|
|
|
|
|
|
sub item_transform_matrix {
|
|
$blurb = 'Transform the specified item in 2d.';
|
|
|
|
$help = <<'HELP';
|
|
This procedure transforms the specified item. If a selection exists
|
|
and the item is a drawable, the portion of the drawable which lies
|
|
under the selection is cut from the drawable and made into a floating
|
|
selection which is then transformed. The transformation is done by
|
|
assembling a 3x3 matrix from the coefficients passed. The return
|
|
value is the ID of the transformed item. If there was no selection or
|
|
the item is not a drawable, this will be equal to the item ID supplied
|
|
as input. Otherwise, this will be the newly created and transformed
|
|
drawable.
|
|
|
|
This procedure is affected by the following context setters:
|
|
gimp_context_set_interpolation(), gimp_context_set_transform_direction(),
|
|
gimp_context_set_transform_resize().
|
|
HELP
|
|
|
|
&mitch_pdb_misc('2010', '2.8');
|
|
|
|
@inargs = (
|
|
{ name => 'item', type => 'item',
|
|
desc => 'The affected item' },
|
|
{ name => 'coeff_0_0', type => 'float',
|
|
desc => 'coefficient (0,0) of the transformation matrix' },
|
|
{ name => 'coeff_0_1', type => 'float',
|
|
desc => 'coefficient (0,1) of the transformation matrix' },
|
|
{ name => 'coeff_0_2', type => 'float',
|
|
desc => 'coefficient (0,2) of the transformation matrix' },
|
|
{ name => 'coeff_1_0', type => 'float',
|
|
desc => 'coefficient (1,0) of the transformation matrix' },
|
|
{ name => 'coeff_1_1', type => 'float',
|
|
desc => 'coefficient (1,1) of the transformation matrix' },
|
|
{ name => 'coeff_1_2', type => 'float',
|
|
desc => 'coefficient (1,2) of the transformation matrix' },
|
|
{ name => 'coeff_2_0', type => 'float',
|
|
desc => 'coefficient (2,0) of the transformation matrix' },
|
|
{ name => 'coeff_2_1', type => 'float',
|
|
desc => 'coefficient (2,1) of the transformation matrix' },
|
|
{ name => 'coeff_2_2', type => 'float',
|
|
desc => 'coefficient (2,2) of the transformation matrix' }
|
|
);
|
|
|
|
@outargs = (
|
|
{ name => 'item', type => 'item', no_declare => 1,
|
|
desc => 'The transformed item' }
|
|
);
|
|
|
|
transform_invoke ("2D Transforming", <<CODE);
|
|
matrix.coeff[0][0] = coeff_0_0;
|
|
matrix.coeff[0][1] = coeff_0_1;
|
|
matrix.coeff[0][2] = coeff_0_2;
|
|
matrix.coeff[1][0] = coeff_1_0;
|
|
matrix.coeff[1][1] = coeff_1_1;
|
|
matrix.coeff[1][2] = coeff_1_2;
|
|
matrix.coeff[2][0] = coeff_2_0;
|
|
matrix.coeff[2][1] = coeff_2_1;
|
|
matrix.coeff[2][2] = coeff_2_2;
|
|
CODE
|
|
}
|
|
|
|
|
|
@headers = qw("libgimpmath/gimpmath.h"
|
|
"core/gimp-transform-utils.h"
|
|
"core/gimpchannel.h"
|
|
"core/gimpdrawable.h"
|
|
"core/gimpdrawable-transform.h"
|
|
"core/gimpimage.h"
|
|
"core/gimpprogress.h"
|
|
"gimppdb-utils.h"
|
|
"gimppdbcontext.h"
|
|
"gimp-intl.h");
|
|
|
|
@procs = qw(item_transform_flip_simple
|
|
item_transform_flip
|
|
item_transform_perspective
|
|
item_transform_rotate_simple
|
|
item_transform_rotate
|
|
item_transform_scale
|
|
item_transform_shear
|
|
item_transform_2d
|
|
item_transform_matrix);
|
|
|
|
%exports = (app => [@procs], lib => [@procs]);
|
|
|
|
$desc = 'Transformation procedures';
|
|
$doc_title = 'gimpitemtransform';
|
|
$doc_short_desc = 'Functions to perform transformations on items.';
|
|
$doc_long_desc = 'Functions to perform transformations on items.';
|
|
|
|
1;
|