mirror of https://github.com/GNOME/gimp.git
126 lines
8.0 KiB
C
126 lines
8.0 KiB
C
/* GIMP - The GNU Image Manipulation Program
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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 __GIMP_TRANSFORM_UTILS_H__
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#define __GIMP_TRANSFORM_UTILS_H__
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#define GIMP_TRANSFORM_NEAR_Z 0.02
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void gimp_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 gimp_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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GimpOrientationType flip_type,
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gboolean auto_center,
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gdouble *axis);
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void gimp_transform_matrix_flip (GimpMatrix3 *matrix,
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GimpOrientationType flip_type,
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gdouble axis);
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void gimp_transform_matrix_flip_free (GimpMatrix3 *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 gimp_transform_matrix_rotate (GimpMatrix3 *matrix,
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GimpRotationType rotate_type,
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gdouble center_x,
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gdouble center_y);
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void gimp_transform_matrix_rotate_rect (GimpMatrix3 *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 gimp_transform_matrix_rotate_center (GimpMatrix3 *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 gimp_transform_matrix_scale (GimpMatrix3 *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 gimp_transform_matrix_shear (GimpMatrix3 *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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GimpOrientationType orientation,
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gdouble amount);
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void gimp_transform_matrix_perspective (GimpMatrix3 *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 gimp_transform_matrix_generic (GimpMatrix3 *matrix,
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const GimpVector2 input_points[4],
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const GimpVector2 output_points[4]);
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gboolean gimp_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 gimp_transform_polygon (const GimpMatrix3 *matrix,
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const GimpVector2 *vertices,
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gint n_vertices,
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gboolean closed,
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GimpVector2 *t_vertices,
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gint *n_t_vertices);
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void gimp_transform_polygon_coords (const GimpMatrix3 *matrix,
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const GimpCoords *vertices,
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gint n_vertices,
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gboolean closed,
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GimpCoords *t_vertices,
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gint *n_t_vertices);
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void gimp_transform_bezier_coords (const GimpMatrix3 *matrix,
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const GimpCoords 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 /* __GIMP_TRANSFORM_UTILS_H__ */
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