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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2017 Leszek Koltunski leszek@koltunski.pl //
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// //
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// This file is part of Distorted. //
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// //
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// This library is free software; you can redistribute it and/or //
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// modify it under the terms of the GNU Lesser General Public //
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// License as published by the Free Software Foundation; either //
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// version 2.1 of the License, or (at your option) any later version. //
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// //
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// This library 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 GNU //
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// Lesser General Public License for more details. //
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// //
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// You should have received a copy of the GNU Lesser General Public //
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// License along with this library; 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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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.library.effect;
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import org.distorted.library.effectqueue.EffectQueue;
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import org.distorted.library.main.DistortedLibrary;
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import org.distorted.library.main.InternalStackFrameList;
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import org.distorted.library.message.EffectListener;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Abstract Effect of any type.
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*/
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public abstract class Effect
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{
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private final static int MAX_UNITY_DIM = 4;
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private final static int NUM_EFFECTS = EffectName.LENGTH;
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private final long mID;
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private final EffectType mType;
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private final EffectName mName;
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private final int mDimension;
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private final int mRegionDim;
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private final int mCenterDim;
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private ArrayList<EffectListener> mListeners =null;
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private int mNumListeners=0; // ==mListeners.length(), but we only create mListeners if the first one gets added
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private final static float[] mUnity= new float[MAX_UNITY_DIM*NUM_EFFECTS];
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private final static int[] mUnityDim = new int[NUM_EFFECTS];
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int mAndAssociation;
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int mEquAssociation;
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static boolean[] mEnabled = new boolean[NUM_EFFECTS];
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static
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{
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for(int i=0; i<NUM_EFFECTS; i++) mEnabled[i] = false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public abstract void addQueue(EffectQueue queue);
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public abstract void remQueue(EffectQueue queue);
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///////////////////////////////////////////////////////////////////////////////////////////////////
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Effect(EffectName name)
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{
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mName = name;
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mType = name.getType();
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mDimension = name.getEffectDimension();
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mCenterDim = name.getCenterDimension();
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mRegionDim = name.getRegionDimension();
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mAndAssociation = 0xffffffff;
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mEquAssociation = 0;
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int n = name.ordinal();
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float[] u = name.getUnity();
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int l = u.length;
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System.arraycopy(u, 0, mUnity, MAX_UNITY_DIM*n, l);
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mUnityDim[n] = l;
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mID = (InternalStackFrameList.getNextEffectID()<<EffectType.LENGTH) + mType.ordinal();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Only for use by the library itself.
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*
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* @y.exclude
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*/
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public static void onPause()
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{
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for(int i=0; i<NUM_EFFECTS; i++) mEnabled[i] = false;
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MatrixEffect.destroyStatics();
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VertexEffect.destroyStatics();
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FragmentEffect.destroyStatics();
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PostprocessEffect.destroyStatics();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Only for use by the library itself.
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*
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* @y.exclude
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*/
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public abstract boolean compute(float[] uniforms, int index, long currentDuration, long step );
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Only for use by the library itself.
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*
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* @y.exclude
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*/
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public int getNumListeners()
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{
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return mNumListeners;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Only for use by the library itself.
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*
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* @y.exclude
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*/
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public EffectListener removeFirstListener()
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{
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if( mNumListeners>0 )
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{
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mNumListeners--;
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return mListeners.remove(0);
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}
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return null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Only for use by the library itself.
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*
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* @y.exclude
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*/
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public void writeAssociations(int[] intUniforms, int index1, int index2)
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{
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intUniforms[index1] = mAndAssociation;
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intUniforms[index2] = mEquAssociation;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Do the set of Uniforms written in buffer[index], buffer[index+1], etc represent a Unity, i.e a
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* null Effect?
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*/
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public boolean isUnity(float[] buffer, int index)
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{
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int name = mName.ordinal();
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switch(mUnityDim[name])
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{
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case 0: return true;
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case 1: return buffer[index ]==mUnity[MAX_UNITY_DIM*name ];
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case 2: return buffer[index ]==mUnity[MAX_UNITY_DIM*name ] &&
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buffer[index+1]==mUnity[MAX_UNITY_DIM*name+1];
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case 3: return buffer[index ]==mUnity[MAX_UNITY_DIM*name ] &&
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buffer[index+1]==mUnity[MAX_UNITY_DIM*name+1] &&
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buffer[index+2]==mUnity[MAX_UNITY_DIM*name+2];
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case 4: return buffer[index ]==mUnity[MAX_UNITY_DIM*name ] &&
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buffer[index+1]==mUnity[MAX_UNITY_DIM*name+1] &&
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buffer[index+2]==mUnity[MAX_UNITY_DIM*name+2] &&
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buffer[index+3]==mUnity[MAX_UNITY_DIM*name+3];
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}
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// this will enable() all Fragment Effects twice (once for smooth variant, once for non-smooth)
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// but this shouldn't matter.
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/**
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* Enable all effects of a given type.
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*
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* @param type EffectType to enable.
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*/
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public static void enableEffects(EffectType type)
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{
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Method method;
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for(EffectName name: EffectName.values())
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{
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if( name.getType() == type )
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{
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Class<? extends Effect> cls = name.getEffectClass();
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try
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{
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method = cls.getMethod("enable"); // getMethod and NOT getDeclaredMethod because enable()
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// is public
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}
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catch(NoSuchMethodException ex)
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{
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DistortedLibrary.logMessage("Effect: exception getting method: "+ex.getMessage());
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method = null;
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}
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try
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{
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if( method!=null ) method.invoke(null);
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}
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catch(Exception ex)
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{
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DistortedLibrary.logMessage("Effect: exception invoking method: "+ex.getMessage());
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}
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return the EffectType enum corresponding to this Effect.
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*
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* @see EffectType
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*/
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public EffectType getType()
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{
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return mType;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return the EffectName enum corresponding to this Effect.
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*
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* @see EffectName
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*/
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public EffectName getName()
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{
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return mName;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return the unique ID of this Effect.
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*/
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public long getID()
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{
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return mID;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return a printable name of this Effect.
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*/
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public String getString()
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{
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return mName.name();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return the dimension of the Center supported by this effect (0- no center supported at all).
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*/
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public int getCenterDimension()
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{
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return mCenterDim;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return the dimension of the Region supported by this effect (0- no region supported at all).
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*/
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public int getRegionDimension()
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{
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return mRegionDim;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return the number of Uniforms needed to describe this effect.
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*/
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public int getEffectDimension()
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{
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return mDimension;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Adds the calling class to the list of Listeners that get notified when this Effect gets 'finished'
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* i.e. when the Dynamic inside this Effect reaches its final point and stops moving. This will be sent
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* only once, on the first time the Dynamic reaches its final point.
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*
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* If there's no Dynamic, ths message will never be sent.
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*
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* @param el A class implementing the EffectListener interface that wants to get notifications.
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*/
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public void notifyWhenFinished(EffectListener el)
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{
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if( mListeners==null ) mListeners = new ArrayList<>();
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if( !mListeners.contains(el) )
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{
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mListeners.add(el);
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mNumListeners++;
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}
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}
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}
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