David Robillard
0906b39918
git-svn-id: svn://localhost/ardour2/branches/3.0@9302 d708f5d6-7413-0410-9779-e7cbd77b26cf
85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
/*
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Copyright (C) 2007 Paul Davis
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Author: David Robillard
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "diamond.h"
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using namespace Gnome::Canvas;
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using namespace Gnome::Art;
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Diamond::Diamond(Group& group, double height)
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: Polygon(group)
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, _x (0)
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, _y (0)
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, _h (height)
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{
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points = gnome_canvas_points_new (4);
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move_to (0, 0);
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}
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Diamond::~Diamond ()
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{
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gnome_canvas_points_free (points);
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}
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void
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Diamond::set_height (double height)
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{
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_h = height;
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move_to (_x, _y);
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}
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void
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Diamond::move_to (double x, double y)
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{
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_x = x;
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_y = y;
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points->coords[0] = _x;
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points->coords[1] = _y + (_h * 2.0);
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points->coords[2] = _x + _h;
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points->coords[3] = _y + _h;
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points->coords[4] = _x;
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points->coords[5] = _y;
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points->coords[6] = _x - _h;
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points->coords[7] = _y + _h;
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g_object_set (gobj(), "points", points, NULL);
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}
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void
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Diamond::move_by (double dx, double dy)
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{
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points->coords[0] += dx;
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points->coords[1] += dy;
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points->coords[2] += dx;
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points->coords[3] += dy;
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points->coords[4] += dx;
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points->coords[5] += dy;
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points->coords[6] += dx;
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points->coords[7] += dy;
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g_object_set (gobj(), "points", points, NULL);
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}
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