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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted 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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// //
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// Distorted 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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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.examples.wind;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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import org.distorted.library.DistortedObject;
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import org.distorted.library.type.Dynamic3D;
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import org.distorted.library.type.Static3D;
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class WindEffectsManager
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{
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private Static3D shearFactor;
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private Dynamic3D shearDynamic;
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private Static3D scaleFactor;
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private Dynamic3D scaleDynamic;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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WindEffectsManager()
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{
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shearFactor = new Static3D(0,0,0);
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shearDynamic= new Dynamic3D();
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shearDynamic.add(shearFactor);
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scaleFactor = new Static3D(1,1,1);
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scaleDynamic= new Dynamic3D();
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scaleDynamic.add(scaleFactor);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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synchronized void apply(DistortedObject obj, int wind)
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{
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Static3D center = new Static3D(0,obj.getHeight()/2,0);
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setWind(wind);
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obj.shear(shearDynamic,center);
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obj.scale(scaleDynamic);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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synchronized void setWind(int wind)
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{
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float tanAngle = (wind-50)/50.0f;
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shearFactor.set2(tanAngle);
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scaleFactor.set1(1/(float)Math.sqrt(1+tanAngle*tanAngle));
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}
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}
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