Distorted Android

// Copyright 2016 Leszek Koltunski  leszek@koltunski.pl                                          //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// This library is free software; you can redistribute it and/or                                 //

//                                                                                               //

// This library is distributed in the hope that it will be useful,                               //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU                             //

//                                                                                               //

// You should have received a copy of the GNU Lesser General Public                              //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.library.mesh;

import android.opengl.GLES30;

import org.distorted.library.effect.MatrixEffect;

import org.distorted.library.effect.VertexEffect;

import org.distorted.library.effectqueue.EffectQueue;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.InternalBuffer;

import org.distorted.library.program.DistortedProgram;

import org.distorted.library.type.Static4D;

import org.distorted.library.uniformblock.UniformBlockAssociation;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.DataInputStream;

import java.nio.ByteBuffer;

import java.util.ArrayList;

/**

 * Abstract class which represents a Mesh, ie an array of vertices (rendered as a TRIANGLE_STRIP).

 * <p>

 * If you want to render to a particular shape, extend from here, construct a float array

 * containing per-vertex attributes, and call back setAttribs().

 */

public abstract class MeshBase

   {

   private static final int ASSOC_UBO_BINDING  = 3;

   // sizes of attributes of an individual vertex.

   private static final int TEX_DATA_SIZE= 2; // texture coordinates: s,t

   private static final int COM_DATA_SIZE= 1; // component number, a single float

   static final int TEX_ATTRIB   = 0;

   static final int COM_ATTRIB   = TEX_DATA_SIZE;

   static final int VERT1_ATTRIBS= POS_DATA_SIZE + NOR_DATA_SIZE;  // number of attributes of a vertex (the part changed by preapply)

   private static final int BYTES_PER_FLOAT = 4;

   private static final int OFFSET_POS = POS_ATTRIB*BYTES_PER_FLOAT;

   private static final int OFFSET_COM = COM_ATTRIB*BYTES_PER_FLOAT;

   private static final int TRAN_SIZE  = TRAN_ATTRIBS*BYTES_PER_FLOAT;

   private static final int VERT1_SIZE = VERT1_ATTRIBS*BYTES_PER_FLOAT;

   private static final int[] mCenterBlockIndex = new int[EffectQueue.MAIN_VARIANTS];

   private static int mStride;

   private boolean mShowNormals;              // when rendering this mesh, draw normal vectors?

   private int mNumVertices;

   private float[] mVertAttribs1;             // packed: PosX,PosY,PosZ, NorX,NorY,NorZ

   private float[] mVertAttribs2;             // packed: TexS,TexT, Component

   private float mInflate;

   private final UniformBlockAssociation mUBA;

   private UniformBlockCenter mUBC;

   private boolean mStrideCorrected;

   DeferredJobs.JobNode[] mJobNode;

   private static class TexComponent

     {

     private final Static4D mTextureMap;

     TexComponent(int end)

       {

       mEndIndex  = end;

       }

     TexComponent(TexComponent original)

       {

       }

     void setMap(Static4D map)

       {

       mTextureMap.set(map.get0(),map.get1(),map.get2(),map.get3());

       }

   private ArrayList<TexComponent> mTexComponent;

///////////////////////////////////////////////////////////////////////////////////////////////////

   MeshBase()

     {

     mShowNormals  = false;

     mJobNode = new DeferredJobs.JobNode[1];

     mUBA = new UniformBlockAssociation();

     mVBO1= new InternalBuffer(GLES30.GL_ARRAY_BUFFER             , GLES30.GL_STATIC_DRAW);

     mTFO = new InternalBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, GLES30.GL_STATIC_READ);

     }

   MeshBase(MeshBase original, boolean deep)

     {

     mShowNormals= original.mShowNormals;

     mUBA = new UniformBlockAssociation(original.mUBA);

     if( deep )

       mJobNode = new DeferredJobs.JobNode[1];

       if( original.mJobNode[0]==null ) copy(original);

       }

       mJobNode      = original.mJobNode;

       shallowCopy(original);

       }

     mTFO = new InternalBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, GLES30.GL_STATIC_READ);

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

   void copy(MeshBase original)

     {

     shallowCopy(original);

     mVBO1= new InternalBuffer(GLES30.GL_ARRAY_BUFFER, GLES30.GL_STATIC_DRAW);

     mVertAttribs1= new float[mNumVertices*VERT1_ATTRIBS];

     }

   private void shallowCopy(MeshBase original)

     {

     int texComSize = original.mTexComponent.size();

     for(int i=0; i<texComSize; i++)

       {

       TexComponent comp = new TexComponent(original.mTexComponent.get(i));

       }

     mEffComponent = new ArrayList<>();

     mVBO2= new InternalBuffer(GLES30.GL_ARRAY_BUFFER, GLES30.GL_STATIC_DRAW);

     mVertAttribs2= new float[mNumVertices*VERT2_ATTRIBS];

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

   void mergeTexComponentsNow()

     {

     int num = mTexComponent.size();

       mTexComponent.clear();

///////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////////////////////

   void applyMatrix(MatrixEffect effect, int andAssoc, int equAssoc)

     float[] matrixP  = new float[16];

     float[] uniforms = new float[7];

     matrixP[0] = matrixP[5] = matrixP[10] = matrixP[15] = 1;

     effect.compute(uniforms,0,0,0);

     effect.apply(matrixP, matrixV, uniforms, 0);

     for(int comp=0; comp<numComp; comp++)

       {

       start = end+1;

       end   = mEffComponent.get(comp);

       if( mUBA.matchesAssociation(comp, andAssoc, equAssoc) )

         {

         applyMatrixToComponent(matrixP, matrixV, start, end);

         }

   private void applyMatrixToComponent(float[] matrixP, float[] matrixV, int start, int end)

     {

     for(int index=start*VERT1_ATTRIBS; index<=end*VERT1_ATTRIBS; index+=VERT1_ATTRIBS )

       {

       mVertAttribs1[index+POS_ATTRIB  ] = matrixP[0]*x + matrixP[4]*y + matrixP[ 8]*z + matrixP[12];

       mVertAttribs1[index+NOR_ATTRIB  ] = matrixV[0]*x + matrixV[4]*y + matrixV[ 8]*z;

       }

///////////////////////////////////////////////////////////////////////////////////////////////////

     mUBA.setEffectAssociationNow(component, andAssociation, equAssociation);

   void setComponentCenterNow(int component, float x, float y, float z)

     {

     if( mUBC!=null )

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

// when a derived class is done computing its mesh, it has to call this method.

   void setAttribs(float[] vert1Attribs, float[] vert2Attribs)

     {

     mNumVertices = vert1Attribs.length/VERT1_ATTRIBS;

     mTexComponent.add(new TexComponent(mNumVertices-1));

     mVBO1.invalidate();

     }

   void joinAttribs(MeshBase[] meshes)

     {

     MeshBase mesh;

     TexComponent comp;

     int numMeshes = meshes.length;

     int numVertices,origVertices = mNumVertices;

     int origTexComponents,numTexComponents;

     int origEffComponents=0,numEffComponents;

     if( origVertices>0 )

       origTexComponents = mTexComponent.size();

       mNumVertices+= ( mNumVertices%2==1 ? 2:1 );

       mTexComponent.get(origTexComponents-1).mEndIndex = mNumVertices-1;

       }

     for(int i=0; i<numMeshes; i++)

       {

       numTexComponents = mesh.mTexComponent.size();

       numVertices = mesh.mNumVertices;

       int extraVerticesBefore = mNumVertices==0 ? 0:1;

       for(int j=0; j<numTexComponents; j++)

         {

         comp = new TexComponent(mesh.mTexComponent.get(j));

         comp.mEndIndex += (extraVerticesBefore+mNumVertices);

         mTexComponent.add(comp);

       for(int j=0; j<numEffComponents; j++)

         index += (extraVerticesBefore+mNumVertices);

         mEffComponent.add(index);

         if( origEffComponents<mMaxComponents )

           {

           mUBA.copy(origEffComponents, mesh.mUBA, j);

           if( mUseCenters ) mUBC.copy(origEffComponents, mesh.mUBC, j);

           origEffComponents++;

           }

         }

       mNumVertices += (extraVerticesBefore+numVertices+extraVerticesAfter);

     float[] newAttribs1 = new float[VERT1_ATTRIBS*mNumVertices];

     float[] newAttribs2 = new float[VERT2_ATTRIBS*mNumVertices];

     numVertices = origVertices;

       System.arraycopy(mVertAttribs1,                              0, newAttribs1,                          0, VERT1_ATTRIBS*numVertices);

       origVertices++;

       if( numVertices%2==1 )

         {

         System.arraycopy(mVertAttribs1, VERT1_ATTRIBS*(origVertices-1), newAttribs1, VERT1_ATTRIBS*origVertices, VERT1_ATTRIBS);

         System.arraycopy(mVertAttribs2, VERT2_ATTRIBS*(origVertices-1), newAttribs2, VERT2_ATTRIBS*origVertices, VERT2_ATTRIBS);

         origVertices++;

     for(int i=0; i<numMeshes; i++)

       {

       numVertices = mesh.mNumVertices;

       if( origVertices>0 )

         System.arraycopy(mesh.mVertAttribs1, 0, newAttribs1, VERT1_ATTRIBS*origVertices, VERT1_ATTRIBS);

         origVertices++;

       System.arraycopy(mesh.mVertAttribs1, 0, newAttribs1, VERT1_ATTRIBS*origVertices, VERT1_ATTRIBS*numVertices);

       System.arraycopy(mesh.mVertAttribs2, 0, newAttribs2, VERT2_ATTRIBS*origVertices, VERT2_ATTRIBS*numVertices);

       origVertices+=numVertices;

       if( i<numMeshes-1 && numVertices>0 )

         {

         System.arraycopy(mesh.mVertAttribs1, VERT1_ATTRIBS*(numVertices-1), newAttribs1, VERT1_ATTRIBS*origVertices, VERT1_ATTRIBS);

         System.arraycopy(mesh.mVertAttribs2, VERT2_ATTRIBS*(numVertices-1), newAttribs2, VERT2_ATTRIBS*origVertices, VERT2_ATTRIBS);

         origVertices++;

         if( numVertices%2==1 )

           {

           System.arraycopy(mesh.mVertAttribs1, VERT1_ATTRIBS*(numVertices-1), newAttribs1, VERT1_ATTRIBS*origVertices, VERT1_ATTRIBS);

           System.arraycopy(mesh.mVertAttribs2, VERT2_ATTRIBS*(numVertices-1), newAttribs2, VERT2_ATTRIBS*origVertices, VERT2_ATTRIBS);

           origVertices++;

       DistortedLibrary.logMessage("MeshBase: join: origVertices: "+origVertices+" numVertices: "+mNumVertices);

       }

     int endIndex, index=0, numEffComp = mEffComponent.size();

     for(int component=0; component<numEffComp; component++)

       {

       endIndex = mEffComponent.get(component);

     mVertAttribs1 = newAttribs1;

     mVertAttribs2 = newAttribs2;

     mVBO1.invalidate();

     mVBO2.invalidate();

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

     boolean immediateJoin = true;

     for (MeshBase mesh : meshes)

       {

       if (mesh.mJobNode[0] != null)

       }

     if( immediateJoin ) joinAttribs(meshes);

///////////////////////////////////////////////////////////////////////////////////////////////////

   void textureMap(Static4D[] maps, int startComponent)

     {

     int num_comp = mTexComponent.size();

     if( startComponent>num_comp ) return;

     int num_maps = maps.length;

     int min = Math.min(num_comp-startComponent, num_maps);

     int vertex = startComponent>0 ? mTexComponent.get(startComponent-1).mEndIndex+1 : 0;

     Static4D newMap, oldMap;

     TexComponent comp;

     float newW, newH, ratW, ratH, movX, movY;

     for(int i=0; i<min; i++)

       comp = mTexComponent.get(i+startComponent);

         {

         newW = newMap.get2();

         if( newW!=0.0f && newH!=0.0f )

           {

           oldMap = comp.mTextureMap;

           }

       vertex= comp.mEndIndex+1;

       }

     mVBO2.invalidate();

///////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////////////////////

   public static int getMaxEffComponents()

     {

     return mMaxComponents;

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

     mMaxComponents = max;

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

     ByteBuffer buffer = (ByteBuffer)GLES30.glMapBufferRange( GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 0,

     if( buffer!=null )

       FloatBuffer feedback = buffer.order(ByteOrder.nativeOrder()).asFloatBuffer();

       mVBO1.updateFloat(mVertAttribs1);

       }

       int error = GLES30.glGetError();

       DistortedLibrary.logMessage("MeshBase: failed to map tf buffer, error="+error);

       }

     GLES30.glUnmapBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER);

     }

///////////////////////////////////////////////////////////////////////////////////////////////////