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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.library;
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import java.util.ArrayList;
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import java.util.HashMap;
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import android.opengl.GLES30;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Class which represents a Node in a Tree of (InputSurface,Mesh,Effects) triplets.
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* <p>
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* Having organized such sets into a Tree, we can then render any Node to any OutputSurface.
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* That recursively renders the set held in the Node and all its children.
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* <p>
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* The class takes special care to only render identical sub-trees once. Each Node holds a reference
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* to sub-class 'NodeData'. Two identical sub-trees attached at different points of the main tree
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* will point to the same NodeData; only the first of this is rendered (mData.numRender!).
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*/
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public class DistortedNode implements DistortedAttacheable
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{
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private static HashMap<ArrayList<Long>,NodeData> mMapNodeID = new HashMap<>();
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private static long mNextNodeID =0;
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private DistortedNode mParent;
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private MeshObject mMesh;
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private DistortedEffects mEffects;
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private DistortedInputSurface mSurface;
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private DistortedRenderState mState;
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private NodeData mData;
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private ArrayList<DistortedNode> mChildren;
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private int[] mNumChildren; // ==mChildren.length(), but we only create mChildren if the first one gets added
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private class NodeData
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{
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long ID;
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int numPointingNodes;
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int numRender;
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ArrayList<Long> key;
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DistortedFramebuffer mFBO;
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NodeData(long id, ArrayList<Long> k)
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{
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ID = id;
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key = k;
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numPointingNodes= 1;
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numRender =-1;
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mFBO = null;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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static synchronized void onDestroy()
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{
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mNextNodeID = 0;
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mMapNodeID.clear();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private ArrayList<Long> generateIDList()
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{
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ArrayList<Long> ret = new ArrayList<>();
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ret.add( mSurface.getID() );
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if( mNumChildren[0]==0 )
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{
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ret.add(-mEffects.getID());
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}
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DistortedNode node;
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for(int i=0; i<mNumChildren[0]; i++)
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{
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node = mChildren.get(i);
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ret.add(node.mData.ID);
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}
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return ret;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Debug - print all the Node IDs
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@SuppressWarnings("unused")
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void debug(int depth)
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{
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String tmp="";
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int i;
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for(i=0; i<depth; i++) tmp +=" ";
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tmp += ("NodeID="+mData.ID+" nodes pointing: "+mData.numPointingNodes+" surfaceID="+
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mSurface.getID()+" FBO="+(mData.mFBO==null ? "null":mData.mFBO.getID()))+
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" parent sID="+(mParent==null ? "null": (mParent.mSurface.getID()));
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android.util.Log.e("NODE", tmp);
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for(i=0; i<mNumChildren[0]; i++)
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mChildren.get(i).debug(depth+1);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Debug - print contents of the HashMap
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@SuppressWarnings("unused")
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static void debugMap()
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{
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NodeData tmp;
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for(ArrayList<Long> key: mMapNodeID.keySet())
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{
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tmp = mMapNodeID.get(key);
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android.util.Log.e("NODE", "NodeID: "+tmp.ID+" <-- "+key);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// tree isomorphism algorithm
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private void adjustIsomorphism()
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{
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ArrayList<Long> newList = generateIDList();
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NodeData newData = mMapNodeID.get(newList);
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if( newData!=null )
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{
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newData.numPointingNodes++;
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}
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else
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{
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newData = new NodeData(++mNextNodeID,newList);
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mMapNodeID.put(newList,newData);
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}
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boolean deleteOldFBO = false;
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boolean createNewFBO = false;
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if( --mData.numPointingNodes==0 )
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{
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mMapNodeID.remove(mData.key);
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if( mData.mFBO!=null ) deleteOldFBO=true;
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}
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if( mNumChildren[0]>0 && newData.mFBO==null )
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{
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createNewFBO = true;
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}
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if( mNumChildren[0]==0 && newData.mFBO!=null )
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{
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newData.mFBO.markForDeletion();
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android.util.Log.d("NODE", "ERROR!! this NodeData cannot possibly contain a non-null FBO!! "+newData.mFBO.getID() );
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newData.mFBO = null;
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}
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if( deleteOldFBO && createNewFBO )
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{
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newData.mFBO = mData.mFBO; // just copy over
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//android.util.Log.d("NODE", "copying over FBOs "+mData.mFBO.getID() );
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}
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else if( deleteOldFBO )
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{
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mData.mFBO.markForDeletion();
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//android.util.Log.d("NODE", "deleting old FBO "+mData.mFBO.getID() );
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mData.mFBO = null;
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}
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else if( createNewFBO )
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{
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newData.mFBO = new DistortedFramebuffer(true, DistortedSurface.TYPE_TREE, mSurface.getWidth(),mSurface.getHeight());
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//android.util.Log.d("NODE", "creating new FBO "+newData.mFBO.getID() );
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}
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mData = newData;
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if( mParent!=null ) mParent.adjustIsomorphism();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// return the total number of render calls issued
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int drawRecursive(int renderNum, long currTime, DistortedOutputSurface surface)
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{
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int ret = 0;
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if( mNumChildren[0]>0 && mData.numRender!=renderNum )
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{
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mData.numRender = renderNum;
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mData.mFBO.setAsOutput();
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GLES30.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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GLES30.glClear( GLES30.GL_DEPTH_BUFFER_BIT | GLES30.GL_COLOR_BUFFER_BIT);
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if( mSurface.setAsInput() )
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{
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ret++;
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DistortedEffects.blitPriv(mData.mFBO);
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}
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for(int i=0; i<mNumChildren[0]; i++)
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{
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ret += mChildren.get(i).drawRecursive(renderNum, currTime, mData.mFBO);
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}
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}
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DistortedInputSurface input = mNumChildren[0]==0 ? mSurface : mData.mFBO;
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if( input.setAsInput() )
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{
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ret++;
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mState.apply();
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mEffects.drawPriv(mSurface.getWidth()/2, mSurface.getHeight()/2, mMesh, surface, currTime);
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}
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return ret;
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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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* Constructs new Node.
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*
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* @param surface InputSurface to put into the new Node.
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* @param effects DistortedEffects to put into the new Node.
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* @param mesh MeshObject to put into the new Node.
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*/
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public DistortedNode(DistortedInputSurface surface, DistortedEffects effects, MeshObject mesh)
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{
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mSurface = surface;
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mEffects = effects;
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mMesh = mesh;
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mState = new DistortedRenderState();
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mChildren = null;
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mNumChildren = new int[1];
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mNumChildren[0]= 0;
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mParent = null;
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ArrayList<Long> list = new ArrayList<>();
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list.add(mSurface.getID());
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list.add(-mEffects.getID());
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mData = mMapNodeID.get(list);
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if( mData!=null )
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{
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mData.numPointingNodes++;
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}
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else
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{
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mData = new NodeData(++mNextNodeID,list);
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mMapNodeID.put(list, mData);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Copy-constructs new Node from another Node.
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*
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* @param node The DistortedNode to copy data from.
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* @param flags bit field composed of a subset of the following:
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* {@link Distorted#CLONE_SURFACE}, {@link Distorted#CLONE_MATRIX}, {@link Distorted#CLONE_VERTEX},
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* {@link Distorted#CLONE_FRAGMENT} and {@link Distorted#CLONE_CHILDREN}.
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* For example flags = CLONE_SURFACE | CLONE_CHILDREN.
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*/
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public DistortedNode(DistortedNode node, int flags)
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{
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mEffects= new DistortedEffects(node.mEffects,flags);
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mMesh = node.mMesh;
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mState = new DistortedRenderState();
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mParent = null;
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if( (flags & Distorted.CLONE_SURFACE) != 0 )
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{
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mSurface = node.mSurface;
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}
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else
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{
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int w = node.mSurface.getWidth();
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int h = node.mSurface.getHeight();
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if( node.mSurface instanceof DistortedTexture )
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{
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mSurface = new DistortedTexture(w,h, DistortedSurface.TYPE_TREE);
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}
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else if( node.mSurface instanceof DistortedFramebuffer )
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{
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boolean hasDepth = ((DistortedFramebuffer) node.mSurface).hasDepth();
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mSurface = new DistortedFramebuffer(hasDepth,DistortedSurface.TYPE_TREE,w,h);
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}
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}
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if( (flags & Distorted.CLONE_CHILDREN) != 0 )
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{
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if( node.mChildren==null ) // do NOT copy over the NULL!
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{
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node.mChildren = new ArrayList<>(2);
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}
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mChildren = node.mChildren;
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mNumChildren = node.mNumChildren;
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}
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else
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{
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mChildren = null;
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mNumChildren = new int[1];
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mNumChildren[0] = 0;
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}
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ArrayList<Long> list = generateIDList();
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mData = mMapNodeID.get(list);
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if( mData!=null )
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{
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mData.numPointingNodes++;
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}
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else
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{
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mData = new NodeData(++mNextNodeID,list);
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mMapNodeID.put(list, mData);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Adds a new child to the last position in the list of our Node's children.
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* <p>
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* We cannot do this mid-render - actual attachment will be done just before the next render, by the
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* DistortedAttachDeamon (by calling attachNow())
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*
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* @param node The new Node to add.
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*/
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public void attach(DistortedNode node)
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{
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DistortedAttachDaemon.attach(this,node);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Adds a new child to the last position in the list of our Node's children.
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* <p>
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* We cannot do this mid-render - actual attachment will be done just before the next render, by the
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* DistortedAttachDeamon (by calling attachNow())
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*
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* @param surface InputSurface to initialize our child Node with.
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* @param effects DistortedEffects to initialize our child Node with.
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* @param mesh MeshObject to initialize our child Node with.
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* @return the newly constructed child Node, or null if we couldn't allocate resources.
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*/
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public DistortedNode attach(DistortedInputSurface surface, DistortedEffects effects, MeshObject mesh)
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{
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DistortedNode node = new DistortedNode(surface,effects,mesh);
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DistortedAttachDaemon.attach(this,node);
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return node;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* This is not really part of the public API. Has to be public only because it is a part of the
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* DistortedAttacheable interface, which should really be a class that we extend here instead but
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* Java has no multiple inheritance.
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*
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* @y.exclude
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* @param node The new Node to add.
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*/
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public void attachNow(DistortedNode node)
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{
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if( mChildren==null ) mChildren = new ArrayList<>(2);
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node.mParent = this;
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mChildren.add(node);
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mNumChildren[0]++;
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adjustIsomorphism();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Removes the first occurrence of a specified child from the list of children of our Node.
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* <p>
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* We cannot do this mid-render - actual detachment will be done just before the next render, by the
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* DistortedAttachDeamon (by calling detachNow())
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*
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* @param node The Node to remove.
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*/
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public void detach(DistortedNode node)
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{
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DistortedAttachDaemon.detach(this,node);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Removes the first occurrence of a specified child from the list of children of our Node.
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* <p>
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* A bit questionable method as there can be many different Nodes attached as children, some
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* of them having the same Effects but - for instance - different Mesh. Use with care.
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* <p>
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* We cannot do this mid-render - actual detachment will be done just before the next render, by the
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* DistortedAttachDeamon (by calling detachNow())
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*
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* @param effects DistortedEffects to remove.
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*/
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public void detach(DistortedEffects effects)
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{
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long id = effects.getID();
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DistortedNode node;
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for(int i=0; i<mNumChildren[0]; i++)
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{
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node = mChildren.get(i);
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if( node.mEffects.getID()==id )
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{
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DistortedAttachDaemon.detach(this,node);
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break;
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* This is not really part of the public API. Has to be public only because it is a part of the
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440
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* DistortedAttacheable interface, which should really be a class that we extend here instead but
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* Java has no multiple inheritance.
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*
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* @y.exclude
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* @param node The Node to remove.
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*/
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public void detachNow(DistortedNode node)
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{
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if( mNumChildren[0]>0 && mChildren.remove(node) )
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{
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node.mParent = null;
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mNumChildren[0]--;
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adjustIsomorphism();
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453
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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457
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/**
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* Removes all children Nodes.
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459
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* <p>
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460
|
* We cannot do this mid-render - actual detachment will be done just before the next render, by the
|
461
|
* DistortedAttachDeamon (by calling detachAllNow())
|
462
|
*/
|
463
|
public void detachAll()
|
464
|
{
|
465
|
DistortedAttachDaemon.detachAll(this);
|
466
|
}
|
467
|
|
468
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
469
|
/**
|
470
|
* This is not really part of the public API. Has to be public only because it is a part of the
|
471
|
* DistortedAttacheable interface, which should really be a class that we extend here instead but
|
472
|
* Java has no multiple inheritance.
|
473
|
*
|
474
|
* @y.exclude
|
475
|
*/
|
476
|
public void detachAllNow()
|
477
|
{
|
478
|
if( mNumChildren[0]>0 )
|
479
|
{
|
480
|
DistortedNode tmp;
|
481
|
|
482
|
for(int i=mNumChildren[0]-1; i>=0; i--)
|
483
|
{
|
484
|
tmp = mChildren.remove(i);
|
485
|
tmp.mParent = null;
|
486
|
}
|
487
|
|
488
|
mNumChildren[0] = 0;
|
489
|
adjustIsomorphism();
|
490
|
}
|
491
|
}
|
492
|
|
493
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
494
|
/**
|
495
|
* Returns the DistortedEffects object that's in the Node.
|
496
|
*
|
497
|
* @return The DistortedEffects contained in the Node.
|
498
|
*/
|
499
|
public DistortedEffects getEffects()
|
500
|
{
|
501
|
return mEffects;
|
502
|
}
|
503
|
|
504
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
505
|
/**
|
506
|
* Returns the DistortedInputSurface object that's in the Node.
|
507
|
*
|
508
|
* @return The DistortedInputSurface contained in the Node.
|
509
|
*/
|
510
|
public DistortedInputSurface getSurface()
|
511
|
{
|
512
|
return mSurface;
|
513
|
}
|
514
|
|
515
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
516
|
/**
|
517
|
* Returns the DistortedFramebuffer object that's in the Node.
|
518
|
*
|
519
|
* @return The DistortedFramebuffer contained in the Node.
|
520
|
*/
|
521
|
public DistortedFramebuffer getFramebuffer()
|
522
|
{
|
523
|
return mData.mFBO;
|
524
|
}
|
525
|
|
526
|
|
527
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
528
|
/**
|
529
|
* When rendering this Node, use ColorMask (r,g,b,a).
|
530
|
*
|
531
|
* @param r Write to the RED color channel when rendering this Node?
|
532
|
* @param g Write to the GREEN color channel when rendering this Node?
|
533
|
* @param b Write to the BLUE color channel when rendering this Node?
|
534
|
* @param a Write to the ALPHA channel when rendering this Node?
|
535
|
*/
|
536
|
public void glColorMask(boolean r, boolean g, boolean b, boolean a)
|
537
|
{
|
538
|
mState.glColorMask(r,g,b,a);
|
539
|
}
|
540
|
|
541
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
542
|
/**
|
543
|
* When rendering this Node, switch on writing to Depth buffer?
|
544
|
*
|
545
|
* @param mask Write to the Depth buffer when rendering this Node?
|
546
|
*/
|
547
|
public void glDepthMask(boolean mask)
|
548
|
{
|
549
|
mState.glDepthMask(mask);
|
550
|
}
|
551
|
|
552
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
553
|
/**
|
554
|
* When rendering this Node, which bits of the Stencil buffer to write to?
|
555
|
*
|
556
|
* @param mask Marks the bits of the Stencil buffer we will write to when rendering this Node.
|
557
|
*/
|
558
|
public void glStencilMask(int mask)
|
559
|
{
|
560
|
mState.glStencilMask(mask);
|
561
|
}
|
562
|
|
563
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
564
|
/**
|
565
|
* When rendering this Node, which Tests to enable?
|
566
|
*
|
567
|
* @param test Valid values: GL_DEPTH_TEST, GL_STENCIL_TEST, GL_BLEND
|
568
|
*/
|
569
|
public void glEnable(int test)
|
570
|
{
|
571
|
mState.glEnable(test);
|
572
|
}
|
573
|
|
574
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
575
|
/**
|
576
|
* When rendering this Node, which Tests to enable?
|
577
|
*
|
578
|
* @param test Valid values: GL_DEPTH_TEST, GL_STENCIL_TEST, GL_BLEND
|
579
|
*/
|
580
|
public void glDisable(int test)
|
581
|
{
|
582
|
mState.glDisable(test);
|
583
|
}
|
584
|
|
585
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
586
|
/**
|
587
|
* When rendering this Node, use the following StencilFunc.
|
588
|
*
|
589
|
* @param func Valid values: GL_NEVER, GL_ALWAYS, GL_LESS, GL_LEQUAL, GL_EQUAL, GL_GEQUAL, GL_GREATER, GL_NOTEQUAL
|
590
|
* @param ref Reference valut to compare our stencil with.
|
591
|
* @param mask Mask used when comparing.
|
592
|
*/
|
593
|
public void glStencilFunc(int func, int ref, int mask)
|
594
|
{
|
595
|
mState.glStencilFunc(func,ref,mask);
|
596
|
}
|
597
|
|
598
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
599
|
/**
|
600
|
* When rendering this Node, use the following StencilOp.
|
601
|
* <p>
|
602
|
* Valid values of all 3 parameters: GL_KEEP, GL_ZERO, GL_REPLACE, GL_INCR, GL_DECR, GL_INVERT, GL_INCR_WRAP, GL_DECR_WRAP
|
603
|
*
|
604
|
* @param sfail What to do when Stencil Test fails.
|
605
|
* @param dpfail What to do when Depth Test fails.
|
606
|
* @param dppass What to do when Depth Test passes.
|
607
|
*/
|
608
|
public void glStencilOp(int sfail, int dpfail, int dppass)
|
609
|
{
|
610
|
mState.glStencilOp(sfail,dpfail,dppass);
|
611
|
}
|
612
|
|
613
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
614
|
/**
|
615
|
* When rendering this Node, use the following DepthFunc.
|
616
|
*
|
617
|
* @param func Valid values: GL_NEVER, GL_ALWAYS, GL_LESS, GL_LEQUAL, GL_EQUAL, GL_GEQUAL, GL_GREATER, GL_NOTEQUAL
|
618
|
*/
|
619
|
public void glDepthFunc(int func)
|
620
|
{
|
621
|
mState.glDepthFunc(func);
|
622
|
}
|
623
|
|
624
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
625
|
/**
|
626
|
* When rendering this Node, use the following Blending mode.
|
627
|
* <p>
|
628
|
* Valid values: GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA,
|
629
|
* GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA, GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR,
|
630
|
* GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA, GL_SRC_ALPHA_SATURATE
|
631
|
*
|
632
|
* @param src Source Blend function
|
633
|
* @param dst Destination Blend function
|
634
|
*/
|
635
|
public void glBlendFunc(int src, int dst)
|
636
|
{
|
637
|
mState.glBlendFunc(src,dst);
|
638
|
}
|
639
|
}
|