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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 11:50:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 11:50:49 +0000 |
commit | c853ffb5b2f75f5a889ed2e3ef89b818a736e87a (patch) | |
tree | 7d13a0883bb7936b84d6ecdd7bc332b41ed04bee /src/livarot/sweep-event.h | |
parent | Initial commit. (diff) | |
download | inkscape-c853ffb5b2f75f5a889ed2e3ef89b818a736e87a.tar.xz inkscape-c853ffb5b2f75f5a889ed2e3ef89b818a736e87a.zip |
Adding upstream version 1.3+ds.upstream/1.3+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/livarot/sweep-event.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/livarot/sweep-event.h b/src/livarot/sweep-event.h new file mode 100644 index 0000000..2776c7a --- /dev/null +++ b/src/livarot/sweep-event.h @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** @file + * TODO: insert short description here + *//* + * Authors: see git history + * + * Copyright (C) 2018 Authors + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ +#ifndef INKSCAPE_LIVAROT_SWEEP_EVENT_H +#define INKSCAPE_LIVAROT_SWEEP_EVENT_H +/** \file + * Intersection events. + */ + +#include <2geom/point.h> +class SweepTree; + + +/** + * An intersection event structure to record any intersections that are + * detected (predicted) during the sweepline. + */ +class SweepEvent +{ +public: + SweepTree *sweep[2]; /*!< Nodes associated with the left and right edge of the intersection. */ + + Geom::Point posx; /*!< Point of the intersection. */ + double tl; /*!< Time value of the intersection on the left edge (tl).*/ + double tr; /*!< Time value of the intersection on the right edge (tr). */ + + int ind; /*!< Index in the binary heap. */ + + SweepEvent(); // not used. + virtual ~SweepEvent(); // not used. + + /** + * Initialize the sweep event. + * + * @param iLeft The left node of the intersection. + * @param iRight The right node of the intersection. + * @param iPt The intersection point. + * @param itl The time value of the intersection on the left edge. + * @param itr The time value of the intersection on the right edge. + */ + void MakeNew (SweepTree * iLeft, SweepTree * iRight, Geom::Point const &iPt, + double itl, double itr); + + /// Void a SweepEvent structure. + + /** + * Empty the sweep event data. + * + * Also reset event pointers of any SweepTree nodes that might point to this event. + */ + void MakeDelete (); +}; + + +#endif /* !INKSCAPE_LIVAROT_SWEEP_EVENT_H */ + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |