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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2015 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by:
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* Jonas Ådahl <jadahl@gmail.com>
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*/
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#ifndef META_BORDER_H
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#define META_BORDER_H
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#include <glib.h>
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typedef enum
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{
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META_BORDER_MOTION_DIRECTION_POSITIVE_X = 1 << 0,
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META_BORDER_MOTION_DIRECTION_POSITIVE_Y = 1 << 1,
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META_BORDER_MOTION_DIRECTION_NEGATIVE_X = 1 << 2,
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META_BORDER_MOTION_DIRECTION_NEGATIVE_Y = 1 << 3,
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} MetaBorderMotionDirection;
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typedef struct _MetaVector2
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{
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float x;
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float y;
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} MetaVector2;
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typedef struct _MetaLine2
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{
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MetaVector2 a;
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MetaVector2 b;
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} MetaLine2;
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typedef struct _MetaBorder
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{
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MetaLine2 line;
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MetaBorderMotionDirection blocking_directions;
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} MetaBorder;
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static inline MetaVector2
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meta_vector2_subtract (const MetaVector2 a,
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const MetaVector2 b)
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{
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return (MetaVector2) {
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.x = a.x - b.x,
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.y = a.y - b.y,
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};
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}
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gboolean
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meta_line2_intersects_with (const MetaLine2 *line1,
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const MetaLine2 *line2,
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MetaVector2 *intersection);
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gboolean
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meta_border_is_horizontal (MetaBorder *border);
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gboolean
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meta_border_is_blocking_directions (MetaBorder *border,
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MetaBorderMotionDirection directions);
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unsigned int
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meta_border_get_allows_directions (MetaBorder *border);
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void
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meta_border_set_allows_directions (MetaBorder *border, unsigned int directions);
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#endif /* META_BORDER_H */
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