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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.mesh;
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import android.opengl.GLES30;
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import android.util.Log;
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import org.distorted.library.effect.VertexEffect;
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import org.distorted.library.effectqueue.EffectQueueVertex;
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import org.distorted.library.main.DistortedLibrary;
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import org.distorted.library.main.InternalBuffer;
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import org.distorted.library.program.DistortedProgram;
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import org.distorted.library.type.Static4D;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.FloatBuffer;
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import java.util.ArrayList;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Abstract class which represents a Mesh, ie an array of vertices (rendered as a TRIANGLE_STRIP).
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* <p>
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* If you want to render to a particular shape, extend from here, construct a float array
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* containing per-vertex attributes, and call back setAttribs().
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*/
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public abstract class MeshBase
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{
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// sizes of attributes of an individual vertex.
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private static final int POS_DATA_SIZE= 3; // vertex coordinates: x,y,z
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private static final int NOR_DATA_SIZE= 3; // normal vector: x,y,z
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private static final int INF_DATA_SIZE= 3; // 'inflate' vector: x,y,z
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private static final int TEX_DATA_SIZE= 2; // texture coordinates: s,t
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static final int POS_ATTRIB = 0;
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static final int NOR_ATTRIB = POS_DATA_SIZE;
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static final int INF_ATTRIB = POS_DATA_SIZE + NOR_DATA_SIZE;
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static final int TEX_ATTRIB = POS_DATA_SIZE + NOR_DATA_SIZE + INF_DATA_SIZE;
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static final int VERT_ATTRIBS = POS_DATA_SIZE + NOR_DATA_SIZE + INF_DATA_SIZE + TEX_DATA_SIZE; // number of attributes of a 'normal' vertex
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static final int TRAN_ATTRIBS = POS_DATA_SIZE + POS_DATA_SIZE; // number of attributes of a transform feedback vertex
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private static final int BYTES_PER_FLOAT = 4;
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private static final int OFFSET_POS = POS_ATTRIB*BYTES_PER_FLOAT;
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private static final int OFFSET_NOR = NOR_ATTRIB*BYTES_PER_FLOAT;
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private static final int OFFSET_INF = INF_ATTRIB*BYTES_PER_FLOAT;
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private static final int OFFSET_TEX = TEX_ATTRIB*BYTES_PER_FLOAT;
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private static final int TRAN_SIZE = TRAN_ATTRIBS*BYTES_PER_FLOAT;
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private static final int VERT_SIZE = VERT_ATTRIBS*BYTES_PER_FLOAT;
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private boolean mShowNormals; // when rendering this mesh, draw normal vectors?
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private InternalBuffer mVBO, mTFO; // main vertex buffer and transform feedback buffer
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private int mNumVertices;
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private float[] mVertAttribs; // packed: PosX,PosY,PosZ, NorX,NorY,NorZ, InfX,InfY,InfZ, TexS,TexT
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private float mInflate;
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private boolean mNeedsAdjustment;
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private static class Component
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{
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private int mEndIndex;
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private Static4D mTextureMap;
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private EffectQueueVertex mQueue;
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Component(int end)
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{
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mEndIndex = end;
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mTextureMap= new Static4D(0,0,1,1);
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mQueue = new EffectQueueVertex();
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}
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Component(Component original)
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{
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mEndIndex = original.mEndIndex;
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float x = original.mTextureMap.get0();
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float y = original.mTextureMap.get1();
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float z = original.mTextureMap.get2();
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float w = original.mTextureMap.get3();
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mTextureMap = new Static4D(x,y,z,w);
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mQueue = new EffectQueueVertex(original.mQueue);
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}
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void setMap(Static4D map)
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{
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mTextureMap.set(map.get0(),map.get1(),map.get2(),map.get3());
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}
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}
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private ArrayList<Component> mComponent;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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MeshBase()
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{
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mShowNormals = false;
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mInflate = 0.0f;
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mNeedsAdjustment = false;
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mComponent = new ArrayList<>();
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mVBO = new InternalBuffer(GLES30.GL_ARRAY_BUFFER , GLES30.GL_STATIC_READ);
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mTFO = new InternalBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, GLES30.GL_STATIC_READ);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// copy constructor
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MeshBase(MeshBase original)
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{
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mShowNormals = original.mShowNormals;
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mInflate = original.mInflate;
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mNeedsAdjustment = original.mNeedsAdjustment;
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int size = original.mComponent.size();
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mComponent = new ArrayList<>();
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for(int i=0; i<size; i++)
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{
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Component comp = new Component(original.mComponent.get(i));
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mComponent.add(comp);
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}
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mVBO = new InternalBuffer(GLES30.GL_ARRAY_BUFFER , GLES30.GL_STATIC_READ);
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mTFO = new InternalBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, GLES30.GL_STATIC_READ);
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mNumVertices = original.mNumVertices;
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mVertAttribs = new float[mNumVertices*VERT_ATTRIBS];
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System.arraycopy(original.mVertAttribs,0,mVertAttribs,0,mNumVertices*VERT_ATTRIBS);
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mVBO.invalidate();
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mTFO.invalidate();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int numComponents()
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{
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return mComponent.size();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// when a derived class is done computing its mesh, it has to call this method.
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void setAttribs(float[] vertexAttribs)
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{
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mNumVertices = vertexAttribs.length/VERT_ATTRIBS;
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mVertAttribs = vertexAttribs;
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mComponent.add(new Component(mNumVertices));
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mVBO.invalidate();
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mTFO.invalidate();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// called from MeshJoined
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void join(MeshBase[] meshes)
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{
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MeshBase mesh;
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Component comp;
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int numComponents, numVertices, numMeshes = meshes.length;
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int origVertices = mNumVertices;
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// compute new numVertices; take care of Components
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if( origVertices>0 )
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{
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numComponents = mComponent.size();
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mNumVertices+= ( mNumVertices%2==1 ? 2:1 );
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mComponent.get(numComponents-1).mEndIndex = mNumVertices;
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}
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for(int i=0; i<numMeshes; i++)
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{
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mesh = meshes[i];
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numComponents = mesh.mComponent.size();
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for(int j=0; j<numComponents; j++)
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{
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comp = new Component(mesh.mComponent.get(j));
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comp.mEndIndex += mNumVertices;
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mComponent.add(comp);
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}
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numVertices = mesh.mNumVertices;
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if( mNumVertices==0 )
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{
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if( numMeshes>1 )
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mNumVertices += (numVertices%2==1 ? numVertices+2 : numVertices+1);
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else
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mNumVertices += numVertices;
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}
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else if( i==numMeshes-1 ) mNumVertices += (numVertices+1);
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else mNumVertices += (numVertices%2==1 ? numVertices+3 : numVertices+2);
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}
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// allocate new attrib array
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float[] newAttribs = new float[VERT_ATTRIBS*mNumVertices];
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numVertices = origVertices;
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if( origVertices>0 )
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{
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System.arraycopy(mVertAttribs, 0, newAttribs, 0, VERT_ATTRIBS*numVertices);
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System.arraycopy(mVertAttribs, VERT_ATTRIBS*(origVertices-1), newAttribs, VERT_ATTRIBS*origVertices, VERT_ATTRIBS );
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origVertices++;
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if( numVertices%2==1 )
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{
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System.arraycopy(mVertAttribs, VERT_ATTRIBS*(origVertices-1), newAttribs, VERT_ATTRIBS*origVertices, VERT_ATTRIBS);
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origVertices++;
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}
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}
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for(int i=0; i<numMeshes; i++)
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{
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mesh = meshes[i];
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numVertices = mesh.mNumVertices;
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if( origVertices>0 )
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{
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System.arraycopy(mesh.mVertAttribs, 0, newAttribs, VERT_ATTRIBS*origVertices, VERT_ATTRIBS );
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origVertices++;
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}
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System.arraycopy(mesh.mVertAttribs, 0, newAttribs, VERT_ATTRIBS*origVertices, VERT_ATTRIBS*numVertices);
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origVertices+=numVertices;
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if( i<numMeshes-1 )
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{
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System.arraycopy(mesh.mVertAttribs, VERT_ATTRIBS*(numVertices-1), newAttribs, VERT_ATTRIBS*origVertices, VERT_ATTRIBS);
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origVertices++;
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if( numVertices%2==1 )
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{
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System.arraycopy(mesh.mVertAttribs, VERT_ATTRIBS*(numVertices-1), newAttribs, VERT_ATTRIBS*origVertices, VERT_ATTRIBS);
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origVertices++;
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}
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}
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}
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if( origVertices!=mNumVertices )
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{
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android.util.Log.e("mesh", "join: origVertices: "+origVertices+" numVertices: "+mNumVertices);
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}
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mVertAttribs = newAttribs;
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mVBO.invalidate();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public void copyTransformToVertex()
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{
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float posX, posY, posZ, norX, norY, norZ;
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FloatBuffer feedback=null;
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ByteBuffer buffer = (ByteBuffer)GLES30.glMapBufferRange( GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 0, TRAN_SIZE*mNumVertices,
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GLES30.GL_MAP_READ_BIT);
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if( buffer!=null )
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{
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feedback = buffer.order(ByteOrder.nativeOrder()).asFloatBuffer();
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}
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else
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{
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int error = GLES30.glGetError();
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Log.e("mesh", "failed to map tf buffer, error="+error);
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}
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if( feedback!=null )
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{
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for(int vertex=0; vertex<mNumVertices; vertex++)
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{
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posX = feedback.get(6*vertex );
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posY = feedback.get(6*vertex+1);
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posZ = feedback.get(6*vertex+2);
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norX = feedback.get(6*vertex+3) - posX;
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norY = feedback.get(6*vertex+4) - posY;
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norZ = feedback.get(6*vertex+5) - posZ;
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mVertAttribs[vertex*VERT_ATTRIBS + POS_ATTRIB ] = posX;
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mVertAttribs[vertex*VERT_ATTRIBS + POS_ATTRIB + 1 ] = posY;
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mVertAttribs[vertex*VERT_ATTRIBS + POS_ATTRIB + 2 ] = posZ;
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mVertAttribs[vertex*VERT_ATTRIBS + NOR_ATTRIB ] = norX;
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mVertAttribs[vertex*VERT_ATTRIBS + NOR_ATTRIB + 1 ] = norY;
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mVertAttribs[vertex*VERT_ATTRIBS + NOR_ATTRIB + 2 ] = norZ;
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}
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}
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GLES30.glUnmapBuffer(GLES30.GL_TRANSFORM_FEEDBACK);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public void computeQueue()
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{
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int numComp = mComponent.size();
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for(int i=0; i<numComp; i++)
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{
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mComponent.get(i).mQueue.compute(1);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public void sendQueue()
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{
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int numComp = mComponent.size();
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for(int i=0; i<numComp; i++)
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{
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mComponent.get(i).mQueue.send(0.0f,3);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public int getTFO()
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{
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return mTFO.createImmediately(mNumVertices*TRAN_SIZE, null);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public int getNumVertices()
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{
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return mNumVertices;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public void bindVertexAttribs(DistortedProgram program)
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{
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if( mNeedsAdjustment )
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{
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mNeedsAdjustment = false;
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DistortedLibrary.adjustVertices(this);
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}
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int index = mVBO.createImmediately(mNumVertices*VERT_SIZE, mVertAttribs);
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GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, index );
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GLES30.glVertexAttribPointer(program.mAttribute[0], POS_DATA_SIZE, GLES30.GL_FLOAT, false, VERT_SIZE, OFFSET_POS);
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GLES30.glVertexAttribPointer(program.mAttribute[1], NOR_DATA_SIZE, GLES30.GL_FLOAT, false, VERT_SIZE, OFFSET_NOR);
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GLES30.glVertexAttribPointer(program.mAttribute[2], INF_DATA_SIZE, GLES30.GL_FLOAT, false, VERT_SIZE, OFFSET_INF);
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GLES30.glVertexAttribPointer(program.mAttribute[3], TEX_DATA_SIZE, GLES30.GL_FLOAT, false, VERT_SIZE, OFFSET_TEX);
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GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, 0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public void bindTransformAttribs(DistortedProgram program)
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{
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int index = mTFO.createImmediately(mNumVertices*TRAN_SIZE, null);
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GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, index );
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GLES30.glVertexAttribPointer(program.mAttribute[0], POS_DATA_SIZE, GLES30.GL_FLOAT, false, 0, 0);
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GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, 0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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public void setInflate(float inflate)
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{
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mInflate = inflate;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Not part of public API, do not document (public only because has to be used from the main package)
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*
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* @y.exclude
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*/
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423
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public float getInflate()
|
424
|
{
|
425
|
return mInflate;
|
426
|
}
|
427
|
|
428
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
429
|
// PUBLIC API
|
430
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
431
|
/**
|
432
|
* When rendering this Mesh, do we want to render the Normal vectors as well?
|
433
|
* <p>
|
434
|
* Will work only on OpenGL ES >= 3.0 devices.
|
435
|
*
|
436
|
* @param show Controls if we render the Normal vectors or not.
|
437
|
*/
|
438
|
public void setShowNormals(boolean show)
|
439
|
{
|
440
|
mShowNormals = show;
|
441
|
}
|
442
|
|
443
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
444
|
/**
|
445
|
* When rendering this mesh, should we also draw the normal vectors?
|
446
|
*
|
447
|
* @return <i>true</i> if we do render normal vectors
|
448
|
*/
|
449
|
public boolean getShowNormals()
|
450
|
{
|
451
|
return mShowNormals;
|
452
|
}
|
453
|
|
454
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
455
|
/**
|
456
|
* Release all internal resources.
|
457
|
*/
|
458
|
public void markForDeletion()
|
459
|
{
|
460
|
mVertAttribs = null;
|
461
|
|
462
|
mVBO.markForDeletion();
|
463
|
mTFO.markForDeletion();
|
464
|
}
|
465
|
|
466
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
467
|
/**
|
468
|
* Apply a Vertex Effect to the vertex mesh.
|
469
|
* <p>
|
470
|
* This is a static, permanent modification of the vertices contained in this Mesh. If the effects
|
471
|
* contain any Dynamics, the Dynamics will be evaluated at 0.
|
472
|
*
|
473
|
* We would call this several times building up a list of Effects to do. This list of effects gets
|
474
|
* lazily executed only when the Mesh is used for rendering for the first time.
|
475
|
*
|
476
|
* @param effect Vertex Effect to apply to the Mesh.
|
477
|
*/
|
478
|
public void apply(VertexEffect effect)
|
479
|
{
|
480
|
int numComp = mComponent.size();
|
481
|
|
482
|
for(int i=0; i<numComp; i++)
|
483
|
{
|
484
|
mComponent.get(i).mQueue.add(effect);
|
485
|
}
|
486
|
|
487
|
mNeedsAdjustment = true;
|
488
|
}
|
489
|
|
490
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
491
|
/**
|
492
|
* Sets texture maps for (some of) the components of this mesh.
|
493
|
* <p>
|
494
|
* Format: ( x of lower-left corner, y of lower-left corner, width, height ).
|
495
|
* For example maps[0] = new Static4D( 0.0, 0.5, 0.5, 0.5 ) sets the 0th component texture map to the
|
496
|
* upper-left quadrant of the texture.
|
497
|
* <p>
|
498
|
* Probably the most common user case would be sending as many maps as there are components in this
|
499
|
* Mesh. One can also send less, or more (the extraneous ones will be ignored) and set some of them
|
500
|
* to null (those will be ignored as well). So if there are 5 components, and we want to set the map
|
501
|
* of the 2nd and 4rd one, call this with
|
502
|
* maps = new Static4D[4]
|
503
|
* maps[0] = null
|
504
|
* maps[1] = the map for the 2nd component
|
505
|
* maps[2] = null
|
506
|
* maps[3] = the map for the 4th component
|
507
|
*
|
508
|
* A map's width and height have to be non-zero (but can be negative!)
|
509
|
*
|
510
|
* @param maps List of texture maps to apply to the texture's components.
|
511
|
*/
|
512
|
public void setTextureMap(Static4D[] maps)
|
513
|
{
|
514
|
int num_comp = mComponent.size();
|
515
|
int num_maps = maps.length;
|
516
|
int min = Math.min(num_comp, num_maps);
|
517
|
int vertex = 0;
|
518
|
Static4D newMap, oldMap;
|
519
|
Component comp;
|
520
|
float newW, newH, ratW, ratH, movX, movY;
|
521
|
|
522
|
for(int i=0; i<min; i++)
|
523
|
{
|
524
|
newMap = maps[i];
|
525
|
comp = mComponent.get(i);
|
526
|
|
527
|
if( newMap!=null )
|
528
|
{
|
529
|
newW = newMap.get2();
|
530
|
newH = newMap.get3();
|
531
|
|
532
|
if( newW!=0.0f && newH!=0.0f )
|
533
|
{
|
534
|
oldMap = comp.mTextureMap;
|
535
|
ratW = newW/oldMap.get2();
|
536
|
ratH = newH/oldMap.get3();
|
537
|
movX = newMap.get0() - ratW*oldMap.get0();
|
538
|
movY = newMap.get1() - ratH*oldMap.get1();
|
539
|
|
540
|
for( int index=vertex*VERT_ATTRIBS+TEX_ATTRIB ; vertex<=comp.mEndIndex; vertex++, index+=VERT_ATTRIBS)
|
541
|
{
|
542
|
mVertAttribs[index ] = ratW*mVertAttribs[index ] + movX;
|
543
|
mVertAttribs[index+1] = ratH*mVertAttribs[index+1] + movY;
|
544
|
}
|
545
|
comp.setMap(newMap);
|
546
|
}
|
547
|
}
|
548
|
|
549
|
vertex= comp.mEndIndex+1;
|
550
|
}
|
551
|
|
552
|
mVBO.invalidate();
|
553
|
}
|
554
|
|
555
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
556
|
/**
|
557
|
* Return the texture map of one of the components.
|
558
|
*
|
559
|
* @param component The component number whose texture map we want to retrieve.
|
560
|
*/
|
561
|
public Static4D getTextureMap(int component)
|
562
|
{
|
563
|
return (component>=0 && component<mComponent.size()) ? mComponent.get(component).mTextureMap : null;
|
564
|
}
|
565
|
|
566
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
567
|
/**
|
568
|
* Deep copy
|
569
|
*/
|
570
|
public abstract MeshBase deepCopy();
|
571
|
}
|
572
|
|
573
|
|
574
|
|