205 lines
13 KiB
C
205 lines
13 KiB
C
/* PIKA - Photo and Image Kooker Application
|
|
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
|
|
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
|
|
*
|
|
* Original copyright, applying to most contents (license remains unchanged):
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#ifndef __PIKA_DISPLAY_SHELL_TRANSFORM_H__
|
|
#define __PIKA_DISPLAY_SHELL_TRANSFORM_H__
|
|
|
|
|
|
/* zoom: functions to transform from image space to unrotated display
|
|
* space and back, taking into account scroll offset and scale
|
|
*/
|
|
|
|
void pika_display_shell_zoom_coords (PikaDisplayShell *shell,
|
|
const PikaCoords *image_coords,
|
|
PikaCoords *display_coords);
|
|
void pika_display_shell_unzoom_coords (PikaDisplayShell *shell,
|
|
const PikaCoords *display_coords,
|
|
PikaCoords *image_coords);
|
|
|
|
void pika_display_shell_zoom_xy (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gint *nx,
|
|
gint *ny);
|
|
void pika_display_shell_unzoom_xy (PikaDisplayShell *shell,
|
|
gint x,
|
|
gint y,
|
|
gint *nx,
|
|
gint *ny,
|
|
gboolean round);
|
|
|
|
void pika_display_shell_zoom_xy_f (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *nx,
|
|
gdouble *ny);
|
|
void pika_display_shell_unzoom_xy_f (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *nx,
|
|
gdouble *ny);
|
|
|
|
void pika_display_shell_zoom_segments (PikaDisplayShell *shell,
|
|
const PikaBoundSeg *src_segs,
|
|
PikaSegment *dest_segs,
|
|
gint n_segs,
|
|
gdouble offset_x,
|
|
gdouble offset_y);
|
|
|
|
|
|
/* rotate: functions to transform from unrotated and unflipped but
|
|
* zoomed display space to rotated and flipped display space and back
|
|
*/
|
|
|
|
void pika_display_shell_rotate_coords (PikaDisplayShell *shell,
|
|
const PikaCoords *image_coords,
|
|
PikaCoords *display_coords);
|
|
void pika_display_shell_unrotate_coords (PikaDisplayShell *shell,
|
|
const PikaCoords *display_coords,
|
|
PikaCoords *image_coords);
|
|
|
|
void pika_display_shell_rotate_xy (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gint *nx,
|
|
gint *ny);
|
|
void pika_display_shell_unrotate_xy (PikaDisplayShell *shell,
|
|
gint x,
|
|
gint y,
|
|
gint *nx,
|
|
gint *ny);
|
|
|
|
void pika_display_shell_rotate_xy_f (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *nx,
|
|
gdouble *ny);
|
|
void pika_display_shell_unrotate_xy_f (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *nx,
|
|
gdouble *ny);
|
|
|
|
void pika_display_shell_rotate_bounds (PikaDisplayShell *shell,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2,
|
|
gdouble *nx1,
|
|
gdouble *ny1,
|
|
gdouble *nx2,
|
|
gdouble *ny2);
|
|
void pika_display_shell_unrotate_bounds (PikaDisplayShell *shell,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2,
|
|
gdouble *nx1,
|
|
gdouble *ny1,
|
|
gdouble *nx2,
|
|
gdouble *ny2);
|
|
|
|
|
|
/* transform: functions to transform from image space to rotated
|
|
* display space and back, taking into account scroll offset, scale,
|
|
* rotation and flipping
|
|
*/
|
|
|
|
void pika_display_shell_transform_coords (PikaDisplayShell *shell,
|
|
const PikaCoords *image_coords,
|
|
PikaCoords *display_coords);
|
|
void pika_display_shell_untransform_coords (PikaDisplayShell *shell,
|
|
const PikaCoords *display_coords,
|
|
PikaCoords *image_coords);
|
|
|
|
void pika_display_shell_transform_xy (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gint *nx,
|
|
gint *ny);
|
|
void pika_display_shell_untransform_xy (PikaDisplayShell *shell,
|
|
gint x,
|
|
gint y,
|
|
gint *nx,
|
|
gint *ny,
|
|
gboolean round);
|
|
|
|
void pika_display_shell_transform_xy_f (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *nx,
|
|
gdouble *ny);
|
|
void pika_display_shell_untransform_xy_f (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *nx,
|
|
gdouble *ny);
|
|
|
|
void pika_display_shell_transform_bounds (PikaDisplayShell *shell,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2,
|
|
gdouble *nx1,
|
|
gdouble *ny1,
|
|
gdouble *nx2,
|
|
gdouble *ny2);
|
|
void pika_display_shell_untransform_bounds (PikaDisplayShell *shell,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2,
|
|
gdouble *nx1,
|
|
gdouble *ny1,
|
|
gdouble *nx2,
|
|
gdouble *ny2);
|
|
|
|
void pika_display_shell_transform_bounds_with_scale (PikaDisplayShell *shell,
|
|
gdouble scale,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2,
|
|
gdouble *nx1,
|
|
gdouble *ny1,
|
|
gdouble *nx2,
|
|
gdouble *ny2);
|
|
void pika_display_shell_untransform_bounds_with_scale (PikaDisplayShell *shell,
|
|
gdouble scale,
|
|
gdouble x1,
|
|
gdouble y1,
|
|
gdouble x2,
|
|
gdouble y2,
|
|
gdouble *nx1,
|
|
gdouble *ny1,
|
|
gdouble *nx2,
|
|
gdouble *ny2);
|
|
|
|
void pika_display_shell_untransform_viewport (PikaDisplayShell *shell,
|
|
gboolean clip,
|
|
gint *x,
|
|
gint *y,
|
|
gint *width,
|
|
gint *height);
|
|
|
|
|
|
#endif /* __PIKA_DISPLAY_SHELL_TRANSFORM_H__ */
|
