43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
// HUD_scale.cxx -- HUD Common Scale Base (inherited from Gauge/Tape/Dial)
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//
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// Written by Michele America, started September 1997.
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//
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// Copyright (C) 1997 Michele F. America [micheleamerica#geocities:com]
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// Copyright (C) 2006 Melchior FRANZ [mfranz#aon:at]
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#include "HUD.hxx"
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HUD::Scale::Scale( HUD *hud, const SGPropertyNode *n, float x, float y) :
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Item(hud, n, x, y),
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_input(n->getNode("input", false)),
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_major_divs(n->getFloatValue("major-divisions")),
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_minor_divs(n->getFloatValue("minor-divisions")),
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_modulo(n->getIntValue("modulo"))
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{
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if (n->hasValue("display-span"))
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_range_shown = n->getFloatValue("display-span");
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else
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_range_shown = _input.max() - _input.min();
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_display_factor = get_span() / _range_shown;
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if (_range_shown < 0)
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_range_shown = -_range_shown;
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}
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