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59 lines
1.9 KiB
59 lines
1.9 KiB
14 years ago
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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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// plProgressBar.h
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#ifndef plProgressBar_inc
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#define plProgressBar_inc
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#include "hsTypes.h"
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#include "hsScalar.h"
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// The progress bar displays an amount that's *fraction* of the distance between min and max.
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// i.e., if min is 0.2 and max is 0.7, the bar will run the gamut from min to max; at fraction
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// 0.8, it will display 0.6 ( = 0.2 + 0.8 * (0.7 - 0.2)).
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// The bar runs from 0 to 1 and all values should be in that range.
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class plProgressBar
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{
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public:
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plProgressBar(hsScalar min, hsScalar max) : fMin(min), fMax(max)
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{
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hsAssert(min >= 0, "Min too small.");
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hsAssert(min <= 1, "Min too big.");
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hsAssert(max >= 0, "Max too small.");
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hsAssert(max <= 1, "Max too big.");
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hsAssert(min <= max, "Min and max out of order.");
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}
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virtual hsBool32 Update(hsScalar fraction) = 0;
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hsScalar GetTotalFraction(hsScalar f) const { return fMin + f * (fMax - fMin); }
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private:
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hsScalar fMin;
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hsScalar fMax;
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};
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#endif // plProgressBar_inc
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