130 lines
8.2 KiB
C
130 lines
8.2 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
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*
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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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*
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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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*
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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 <https://www.gnu.org/licenses/>.
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*/
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#ifndef __PIKA_TRANSFORM_UTILS_H__
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#define __PIKA_TRANSFORM_UTILS_H__
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#define PIKA_TRANSFORM_NEAR_Z 0.02
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void pika_transform_get_rotate_center (gint x,
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gint y,
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gint width,
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gint height,
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gboolean auto_center,
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gdouble *center_x,
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gdouble *center_y);
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void pika_transform_get_flip_axis (gint x,
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gint y,
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gint width,
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gint height,
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PikaOrientationType flip_type,
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gboolean auto_center,
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gdouble *axis);
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void pika_transform_matrix_flip (PikaMatrix3 *matrix,
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PikaOrientationType flip_type,
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gdouble axis);
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void pika_transform_matrix_flip_free (PikaMatrix3 *matrix,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2);
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void pika_transform_matrix_rotate (PikaMatrix3 *matrix,
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PikaRotationType rotate_type,
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gdouble center_x,
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gdouble center_y);
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void pika_transform_matrix_rotate_rect (PikaMatrix3 *matrix,
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gint x,
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gint y,
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gint width,
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gint height,
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gdouble angle);
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void pika_transform_matrix_rotate_center (PikaMatrix3 *matrix,
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gdouble center_x,
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gdouble center_y,
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gdouble angle);
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void pika_transform_matrix_scale (PikaMatrix3 *matrix,
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gint x,
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gint y,
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gint width,
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gint height,
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gdouble t_x,
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gdouble t_y,
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gdouble t_width,
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gdouble t_height);
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void pika_transform_matrix_shear (PikaMatrix3 *matrix,
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gint x,
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gint y,
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gint width,
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gint height,
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PikaOrientationType orientation,
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gdouble amount);
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void pika_transform_matrix_perspective (PikaMatrix3 *matrix,
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gint x,
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gint y,
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gint width,
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gint height,
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gdouble t_x1,
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gdouble t_y1,
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gdouble t_x2,
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gdouble t_y2,
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gdouble t_x3,
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gdouble t_y3,
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gdouble t_x4,
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gdouble t_y4);
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gboolean pika_transform_matrix_generic (PikaMatrix3 *matrix,
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const PikaVector2 input_points[4],
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const PikaVector2 output_points[4]);
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gboolean pika_transform_polygon_is_convex (gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2,
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gdouble x3,
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gdouble y3,
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gdouble x4,
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gdouble y4);
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void pika_transform_polygon (const PikaMatrix3 *matrix,
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const PikaVector2 *vertices,
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gint n_vertices,
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gboolean closed,
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PikaVector2 *t_vertices,
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gint *n_t_vertices);
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void pika_transform_polygon_coords (const PikaMatrix3 *matrix,
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const PikaCoords *vertices,
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gint n_vertices,
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gboolean closed,
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PikaCoords *t_vertices,
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gint *n_t_vertices);
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void pika_transform_bezier_coords (const PikaMatrix3 *matrix,
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const PikaCoords bezier[4],
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GQueue *t_beziers[2],
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gint *n_t_beziers,
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gboolean *start_in,
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gboolean *end_in);
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#endif /* __PIKA_TRANSFORM_UTILS_H__ */
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