158 lines
7.0 KiB
C
158 lines
7.0 KiB
C
/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* pikamatrix.h
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* Copyright (C) 1998 Jay Cox <jaycox@gimp.org>
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*
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* This library is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#if !defined (__PIKA_MATH_H_INSIDE__) && !defined (PIKA_MATH_COMPILATION)
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#error "Only <libpikamath/pikamath.h> can be included directly."
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#endif
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#ifndef __PIKA_MATRIX_H__
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#define __PIKA_MATRIX_H__
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G_BEGIN_DECLS
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/* For information look into the C source or the html documentation */
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/*****************/
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/* PikaMatrix2 */
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/*****************/
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#define PIKA_TYPE_MATRIX2 (pika_matrix2_get_type ())
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#define PIKA_VALUE_HOLDS_MATRIX2(value) (G_TYPE_CHECK_VALUE_TYPE ((value), PIKA_TYPE_MATRIX2))
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GType pika_matrix2_get_type (void) G_GNUC_CONST;
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#define PIKA_TYPE_PARAM_MATRIX2 (pika_param_matrix2_get_type ())
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#define PIKA_IS_PARAM_SPEC_MATRIX2(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), PIKA_TYPE_PARAM_MATRIX2))
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GType pika_param_matrix2_get_type (void) G_GNUC_CONST;
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GParamSpec * pika_param_spec_matrix2 (const gchar *name,
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const gchar *nick,
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const gchar *blurb,
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const PikaMatrix2 *default_value,
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GParamFlags flags);
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void pika_matrix2_identity (PikaMatrix2 *matrix);
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void pika_matrix2_mult (const PikaMatrix2 *left,
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PikaMatrix2 *right);
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gdouble pika_matrix2_determinant (const PikaMatrix2 *matrix);
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void pika_matrix2_invert (PikaMatrix2 *matrix);
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void pika_matrix2_transform_point (const PikaMatrix2 *matrix,
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gdouble x,
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gdouble y,
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gdouble *newx,
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gdouble *newy);
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/*****************/
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/* PikaMatrix3 */
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/*****************/
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#define PIKA_TYPE_MATRIX3 (pika_matrix3_get_type ())
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#define PIKA_VALUE_HOLDS_MATRIX3(value) (G_TYPE_CHECK_VALUE_TYPE ((value), PIKA_TYPE_MATRIX3))
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GType pika_matrix3_get_type (void) G_GNUC_CONST;
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#define PIKA_TYPE_PARAM_MATRIX3 (pika_param_matrix3_get_type ())
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#define PIKA_IS_PARAM_SPEC_MATRIX3(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), PIKA_TYPE_PARAM_MATRIX3))
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GType pika_param_matrix3_get_type (void) G_GNUC_CONST;
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GParamSpec * pika_param_spec_matrix3 (const gchar *name,
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const gchar *nick,
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const gchar *blurb,
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const PikaMatrix3 *default_value,
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GParamFlags flags);
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void pika_matrix3_identity (PikaMatrix3 *matrix);
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void pika_matrix3_mult (const PikaMatrix3 *left,
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PikaMatrix3 *right);
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void pika_matrix3_translate (PikaMatrix3 *matrix,
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gdouble x,
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gdouble y);
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void pika_matrix3_scale (PikaMatrix3 *matrix,
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gdouble x,
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gdouble y);
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void pika_matrix3_rotate (PikaMatrix3 *matrix,
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gdouble theta);
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void pika_matrix3_xshear (PikaMatrix3 *matrix,
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gdouble amount);
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void pika_matrix3_yshear (PikaMatrix3 *matrix,
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gdouble amount);
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void pika_matrix3_affine (PikaMatrix3 *matrix,
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gdouble a,
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gdouble b,
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gdouble c,
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gdouble d,
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gdouble e,
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gdouble f);
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gdouble pika_matrix3_determinant (const PikaMatrix3 *matrix);
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void pika_matrix3_invert (PikaMatrix3 *matrix);
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gboolean pika_matrix3_is_identity (const PikaMatrix3 *matrix);
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gboolean pika_matrix3_is_diagonal (const PikaMatrix3 *matrix);
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gboolean pika_matrix3_is_affine (const PikaMatrix3 *matrix);
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gboolean pika_matrix3_is_simple (const PikaMatrix3 *matrix);
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gboolean pika_matrix3_equal (const PikaMatrix3 *matrix1,
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const PikaMatrix3 *matrix2);
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void pika_matrix3_transform_point (const PikaMatrix3 *matrix,
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gdouble x,
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gdouble y,
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gdouble *newx,
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gdouble *newy);
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/*****************/
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/* PikaMatrix4 */
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/*****************/
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void pika_matrix4_identity (PikaMatrix4 *matrix);
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void pika_matrix4_mult (const PikaMatrix4 *left,
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PikaMatrix4 *right);
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void pika_matrix4_to_deg (const PikaMatrix4 *matrix,
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gdouble *a,
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gdouble *b,
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gdouble *c);
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gdouble pika_matrix4_transform_point (const PikaMatrix4 *matrix,
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gdouble x,
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gdouble y,
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gdouble z,
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gdouble *newx,
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gdouble *newy,
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gdouble *newz);
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G_END_DECLS
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#endif /* __PIKA_MATRIX_H__ */
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