Distorted Android

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted is free software: you can redistribute it and/or modify                             //

// it under the terms of the GNU General Public License as published by                          //

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

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

// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

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

package org.distorted.library.mesh;

import android.opengl.GLES30;

import android.util.Log;

import org.distorted.library.effect.VertexEffect;

import org.distorted.library.effectqueue.EffectQueue;

import org.distorted.library.main.InternalBuffer;

import org.distorted.library.program.DistortedProgram;

import org.distorted.library.type.Static4D;

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 MAX_COMPONENTS= 100;

   private static final int DEFAULT_ASSOCIATION = 0xffffffff;

   // 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 + INF_DATA_SIZE;  // number of attributes of a vertex (the part changed by preapply)

   static final int VERT2_ATTRIBS= TEX_DATA_SIZE + COM_DATA_SIZE;                  // number of attributes of a vertex (the 'preapply invariant' part)

   static final int TRAN_ATTRIBS = POS_DATA_SIZE + NOR_DATA_SIZE + INF_DATA_SIZE;  // number of attributes of a transform feedback vertex

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

   private int mNumVertices;

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

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

   private float mInflate;

   private int[] mAssociation;

   DeferredJobs.JobNode[] mJobNode;

   private static int[] mComponentAssociationH = new int[EffectQueue.MAIN_VARIANTS];

   private static class Component

     {

     private Static4D mTextureMap;

     Component(int end)

       {

       mEndIndex  = end;

       }

       }

     void setMap(Static4D map)

       {

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

       }

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

   MeshBase()

     {

     mShowNormals= false;

     mAssociation= new int[MAX_COMPONENTS];

     mJobNode = new DeferredJobs.JobNode[1];

     for(int i=0; i<MAX_COMPONENTS; i++) mAssociation[i] = DEFAULT_ASSOCIATION;

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

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

     }

   MeshBase(MeshBase original, boolean deep)

     {

     mShowNormals     = original.mShowNormals;

     mNumVertices     = original.mNumVertices;

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

     mAssociation= new int[MAX_COMPONENTS];

     if( deep )

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

       mJobNode = new DeferredJobs.JobNode[1];

         {

         mJobNode[0] = DeferredJobs.copy(this,original);

         }

       }

       mJobNode      = original.mJobNode;

       }

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

     System.arraycopy(original.mVertAttribs2,0,mVertAttribs2,0,mNumVertices*VERT2_ATTRIBS);

     mTFO.invalidate();

     }

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

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

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

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

// 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;

     mComponent.add(new Component(mNumVertices-1));

     mVBO1.invalidate();

     }

// called from MeshJoined

   void join(MeshBase[] meshes)

     {

     MeshBase mesh;

     int origComponents=0, numComponents, numVertices, numMeshes = meshes.length;

     int origVertices = mNumVertices;

     // compute new numVertices; take care of Components

     if( origVertices>0 )

       origComponents = mComponent.size();

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

       mComponent.get(origComponents-1).mEndIndex = mNumVertices-1;

       }

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

       {

       numComponents = mesh.mComponent.size();

       numVertices = mesh.mNumVertices;

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

         {

         comp.mEndIndex += (extraVerticesBefore+mNumVertices+extraVerticesAfter);

         mComponent.add(comp);

         if( origComponents<MAX_COMPONENTS )

         }

       }

     float[] newAttribs1 = new float[VERT1_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);

         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);

       origVertices+=numVertices;

       if( i<numMeshes-1 )

         {

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

         origVertices++;

         if( numVertices%2==1 )

           {

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

           origVertices++;

     int endIndex, index=0, numComp = mComponent.size();

     mVertAttribs1 = newAttribs1;

     mVBO1.invalidate();

     }

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

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

     if( buffer!=null )

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

       }

       int error = GLES30.glGetError();

       }

     GLES30.glUnmapBuffer(GLES30.GL_TRANSFORM_FEEDBACK);

     }

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

 * Not part of public API, do not document (public only because has to be used from the main package)

 */

   public int getTFO()

     {

     return mTFO.createImmediately(mNumVertices*TRAN_SIZE, null);

     }

 * Not part of public API, do not document (public only because has to be used from the main package)

 */

   public int getNumVertices()

     {

     return mNumVertices;

     }

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

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

/**

   public void bindVertexAttribs(DistortedProgram program)

     {

     if( mJobNode[0]!=null )

       {

       mJobNode[0].execute();  // this will set itself to null

       }

     int index1 = mVBO1.createImmediately(mNumVertices*VERT1_SIZE, mVertAttribs1);

     GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, index1 );

     GLES30.glVertexAttribPointer(program.mAttribute[4], COM_DATA_SIZE, GLES30.GL_FLOAT, false, VERT2_SIZE, OFFSET_COM);

     GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, 0);

     }

     int index = mTFO.createImmediately(mNumVertices*TRAN_SIZE, null);

     GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, index );

     }

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

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

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

 * <p>

 *

     mShowNormals = show;

     }

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

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

     mVertAttribs1 = null;

     mVBO1.markForDeletion();

     mTFO.markForDeletion();

 * Apply a Vertex Effect to the vertex mesh.

 * <p>

 * This is a static, permanent modification of the vertices contained in this Mesh. If the effects

 * contain any Dynamics, the Dynamics will be evaluated at 0.

 *

 * We would call this several times building up a list of Effects to do. This list of effects gets

 *

 * @param effect Vertex Effect to apply to the Mesh.

 */

   public void apply(VertexEffect effect)

     {

     mJobNode[0] = DeferredJobs.vertex(this,effect);

     }

 * Sets texture maps for (some of) the components of this mesh.

 * <p>

 * Format: ( x of lower-left corner, y of lower-left corner, width, height ).

 * upper-left quadrant of the texture.

 * <p>

 *

 */

   public void setTextureMap(Static4D[] maps)

     {

     int num_comp = mComponent.size();

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

     int vertex = 0;

     Static4D newMap, oldMap;

     Component comp;

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

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

       {

       newMap = maps[i];

       comp = mComponent.get(i);

         {

         newW = newMap.get2();

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

           {

           oldMap = comp.mTextureMap;

           for( int index=vertex*VERT2_ATTRIBS+TEX_ATTRIB ; vertex<=comp.mEndIndex; vertex++, index+=VERT2_ATTRIBS)

             {

             mVertAttribs2[index  ] = ratW*mVertAttribs2[index  ] + movX;

             }

           }

         }

       }

     mVBO2.invalidate();

     }

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

 * Set Effect association.

 *

 * This creates an association between a Component of this Mesh and a Vertex Effect.

 * vertices of Components such that

 *

 * subset of a Mesh, thus potentially significantly reducing the number of render calls.

 */

  public void setEffectAssociation(int component, int association)

    {

    if( component>=0 && component<MAX_COMPONENTS )

      {

      mAssociation[component] = association;

      }

 * Copy the Mesh.

 *             coordinates and effect associations, is always deep copied)

 */

   public abstract MeshBase copy(boolean deep);

   }