| /* Copyright (C) 1989, 1990 Aladdin Enterprises. All rights reserved. |
| Distributed by Free Software Foundation, Inc. |
| |
| This file is part of Ghostscript. |
| |
| Ghostscript is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY. No author or distributor accepts responsibility |
| to anyone for the consequences of using it or for whether it serves any |
| particular purpose or works at all, unless he says so in writing. Refer |
| to the Ghostscript General Public License for full details. |
| |
| Everyone is granted permission to copy, modify and redistribute |
| Ghostscript, but only under the conditions described in the Ghostscript |
| General Public License. A copy of this license is supposed to have been |
| given to you along with Ghostscript so you can know your rights and |
| responsibilities. It should be in a file named COPYING. Among other |
| things, the copyright notice and this notice must be preserved on all |
| copies. */ |
| |
| /* gxmatrix.h */ |
| /* Internal matrix routines for GhostScript library */ |
| #include "gsmatrix.h" |
| |
| /* A matrix with a cached fixed-point copy of the translation. */ |
| /* This is only used by a few routines; they are responsible */ |
| /* for ensuring the validity of the cache. */ |
| typedef struct gs_matrix_fixed_s { |
| _matrix_body; |
| fixed tx_fixed, ty_fixed; |
| } gs_matrix_fixed; |
| |
| /* Coordinate transformations to fixed point */ |
| int gs_point_transform2fixed(P4(gs_matrix_fixed *, floatp, floatp, gs_fixed_point *)), |
| gs_distance_transform2fixed(P4(gs_matrix_fixed *, floatp, floatp, gs_fixed_point *)); |
| |
| /* Macro for testing whether matrix coefficients are zero, */ |
| /* for shortcuts when the matrix has no skew. */ |
| #define is_skewed(pmat) !is_fzero2((pmat)->xy, (pmat)->yx) |
