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39 lines
1.6 KiB
C
39 lines
1.6 KiB
C
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/* gimpmatrix.h
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* Copyright (C) 1998 Jay Cox <jaycox@earthlink.net>
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMPMATRIX_H__
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#define __GIMPMATRIX_H__
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typedef double GimpMatrix[3][3];
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void gimp_matrix_transform_point (const GimpMatrix, double, double,
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double *, double *);
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void gimp_matrix_mult (const GimpMatrix, GimpMatrix);
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void gimp_matrix_identity (GimpMatrix);
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void gimp_matrix_translate (GimpMatrix, double, double);
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void gimp_matrix_scale (GimpMatrix, double, double);
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void gimp_matrix_rotate (GimpMatrix, double);
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void gimp_matrix_xshear (GimpMatrix, double);
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void gimp_matrix_yshear (GimpMatrix, double);
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double gimp_matrix_determinant (const GimpMatrix);
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void gimp_matrix_invert (const GimpMatrix m, GimpMatrix m_inv);
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#endif /* __GIMPMATRIX_H__ */
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