PIKApp/app/core/pika-transform-utils.h

130 lines
8.2 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) 1995-2001 Spencer Kimball, Peter Mattis, and others
*
* 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_TRANSFORM_UTILS_H__
#define __PIKA_TRANSFORM_UTILS_H__
#define PIKA_TRANSFORM_NEAR_Z 0.02
void pika_transform_get_rotate_center (gint x,
gint y,
gint width,
gint height,
gboolean auto_center,
gdouble *center_x,
gdouble *center_y);
void pika_transform_get_flip_axis (gint x,
gint y,
gint width,
gint height,
PikaOrientationType flip_type,
gboolean auto_center,
gdouble *axis);
void pika_transform_matrix_flip (PikaMatrix3 *matrix,
PikaOrientationType flip_type,
gdouble axis);
void pika_transform_matrix_flip_free (PikaMatrix3 *matrix,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2);
void pika_transform_matrix_rotate (PikaMatrix3 *matrix,
PikaRotationType rotate_type,
gdouble center_x,
gdouble center_y);
void pika_transform_matrix_rotate_rect (PikaMatrix3 *matrix,
gint x,
gint y,
gint width,
gint height,
gdouble angle);
void pika_transform_matrix_rotate_center (PikaMatrix3 *matrix,
gdouble center_x,
gdouble center_y,
gdouble angle);
void pika_transform_matrix_scale (PikaMatrix3 *matrix,
gint x,
gint y,
gint width,
gint height,
gdouble t_x,
gdouble t_y,
gdouble t_width,
gdouble t_height);
void pika_transform_matrix_shear (PikaMatrix3 *matrix,
gint x,
gint y,
gint width,
gint height,
PikaOrientationType orientation,
gdouble amount);
void pika_transform_matrix_perspective (PikaMatrix3 *matrix,
gint x,
gint y,
gint width,
gint height,
gdouble t_x1,
gdouble t_y1,
gdouble t_x2,
gdouble t_y2,
gdouble t_x3,
gdouble t_y3,
gdouble t_x4,
gdouble t_y4);
gboolean pika_transform_matrix_generic (PikaMatrix3 *matrix,
const PikaVector2 input_points[4],
const PikaVector2 output_points[4]);
gboolean pika_transform_polygon_is_convex (gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble x3,
gdouble y3,
gdouble x4,
gdouble y4);
void pika_transform_polygon (const PikaMatrix3 *matrix,
const PikaVector2 *vertices,
gint n_vertices,
gboolean closed,
PikaVector2 *t_vertices,
gint *n_t_vertices);
void pika_transform_polygon_coords (const PikaMatrix3 *matrix,
const PikaCoords *vertices,
gint n_vertices,
gboolean closed,
PikaCoords *t_vertices,
gint *n_t_vertices);
void pika_transform_bezier_coords (const PikaMatrix3 *matrix,
const PikaCoords bezier[4],
GQueue *t_beziers[2],
gint *n_t_beziers,
gboolean *start_in,
gboolean *end_in);
#endif /* __PIKA_TRANSFORM_UTILS_H__ */