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- /* Copyright (C) 1989, 1992, 1993 Aladdin Enterprises. All rights reserved.
-
- 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. */
-
- /* gscoord.h */
- /* Coordinate system operators for Ghostscript library */
- /* Requires gsmatrix.h and gsstate.h */
-
- /* Coordinate system modification */
- int gs_initmatrix(P1(gs_state *)),
- gs_defaultmatrix(P2(const gs_state *, gs_matrix *)),
- gs_currentmatrix(P2(const gs_state *, gs_matrix *)),
- gs_currentcharmatrix(P3(gs_state *, gs_matrix *, int)),
- gs_setmatrix(P2(gs_state *, const gs_matrix *)),
- gs_translate(P3(gs_state *, floatp, floatp)),
- gs_scale(P3(gs_state *, floatp, floatp)),
- gs_rotate(P2(gs_state *, floatp)),
- gs_concat(P2(gs_state *, const gs_matrix *));
-
- /* Coordinate transformation */
- int gs_transform(P4(gs_state *, floatp, floatp, gs_point *)),
- gs_dtransform(P4(gs_state *, floatp, floatp, gs_point *)),
- gs_itransform(P4(gs_state *, floatp, floatp, gs_point *)),
- gs_idtransform(P4(gs_state *, floatp, floatp, gs_point *));
-
- /* Inline versions of some of the transformations */
- #define gs_idtransform_inline(pgs, dx, dy, pt)\
- (is_skewed(&(pgs)->ctm) ? gs_idtransform(pgs, dx, dy, pt) :\
- is_fzero((pgs)->ctm.xx) || is_fzero((pgs)->ctm.yy) ?\
- gs_note_error(gs_error_undefinedresult) :\
- ((pt)->x = (dx) / (pgs)->ctm.xx, (pt)->y = (dy) / (pgs)->ctm.yy, 0))
-