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+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_CONTOUR_PRIVATE_H
+#define CAIRO_CONTOUR_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-private.h"
+
+#include <stdio.h>
+
+CAIRO_BEGIN_DECLS
+
+/* A contour is simply a closed chain of points that divide the infinite plane
+ * into inside and outside. Each contour is a simple polygon, that is it
+ * contains no holes or self-intersections, but maybe either concave or convex.
+ */
+
+struct _cairo_contour_chain {
+ cairo_point_t *points;
+ int num_points, size_points;
+ struct _cairo_contour_chain *next;
+};
+
+struct _cairo_contour_iter {
+ cairo_point_t *point;
+ cairo_contour_chain_t *chain;
+};
+
+struct _cairo_contour {
+ cairo_list_t next;
+ int direction;
+ cairo_contour_chain_t chain, *tail;
+
+ cairo_point_t embedded_points[64];
+};
+
+/* Initial definition of a shape is a set of contours (some representing holes) */
+struct _cairo_shape {
+ cairo_list_t contours;
+};
+
+typedef struct _cairo_shape cairo_shape_t;
+
+#if 0
+cairo_private cairo_status_t
+_cairo_shape_init_from_polygon (cairo_shape_t *shape,
+ const cairo_polygon_t *polygon);
+
+cairo_private cairo_status_t
+_cairo_shape_reduce (cairo_shape_t *shape, double tolerance);
+#endif
+
+cairo_private void
+_cairo_contour_init (cairo_contour_t *contour,
+ int direction);
+
+cairo_private cairo_int_status_t
+__cairo_contour_add_point (cairo_contour_t *contour,
+ const cairo_point_t *point);
+
+cairo_private void
+_cairo_contour_simplify (cairo_contour_t *contour, double tolerance);
+
+cairo_private void
+_cairo_contour_reverse (cairo_contour_t *contour);
+
+cairo_private cairo_int_status_t
+_cairo_contour_add (cairo_contour_t *dst,
+ const cairo_contour_t *src);
+
+cairo_private cairo_int_status_t
+_cairo_contour_add_reversed (cairo_contour_t *dst,
+ const cairo_contour_t *src);
+
+cairo_private void
+__cairo_contour_remove_last_chain (cairo_contour_t *contour);
+
+cairo_private void
+_cairo_contour_reset (cairo_contour_t *contour);
+
+cairo_private void
+_cairo_contour_fini (cairo_contour_t *contour);
+
+cairo_private void
+_cairo_debug_print_contour (FILE *file, cairo_contour_t *contour);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_CONTOUR_PRIVATE_H */