Distorted Android

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

// Copyright 2016 Leszek Koltunski                                                               //

//                                                                                               //

// 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                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted 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 General Public License for more details.                                                  //

//                                                                                               //

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

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

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

package org.distorted.library.effectqueue;

import android.opengl.GLES30;

import android.opengl.Matrix;

import org.distorted.library.effect.EffectType;

import org.distorted.library.effect.MatrixEffect;

import org.distorted.library.message.EffectMessageSender;

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

class EffectQueueMatrix extends EffectQueue

  {

  private static final int NUM_FLOAT_UNIFORMS = MatrixEffect.NUM_FLOAT_UNIFORMS;

  private static final int NUM_INT_UNIFORMS   = MatrixEffect.NUM_INT_UNIFORMS;

  private static final int INDEX = EffectType.MATRIX.ordinal();

  private static final float[] mMVPMatrix       = new float[16];

  private static final float[] mModelViewMatrixP= new float[16];

  private static final float[] mModelViewMatrixV= new float[16];

  private static final int[] mMVPMatrixH = new int[MAIN_VARIANTS];

  private static final int[] mMVMatrixPH = new int[MAIN_VARIANTS];

  private static final int[] mMVMatrixVH = new int[MAIN_VARIANTS];

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

  EffectQueueMatrix()

    { 

    super(NUM_FLOAT_UNIFORMS, NUM_INT_UNIFORMS, INDEX);

    }

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

  EffectQueueMatrix(EffectQueueMatrix source)

    {

    super(source);

    }

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

  static void uniforms(int mProgramH, int variant)

    {

    mMVPMatrixH[variant]= GLES30.glGetUniformLocation(mProgramH, "u_MVPMatrix");

    mMVMatrixPH[variant]= GLES30.glGetUniformLocation(mProgramH, "u_MVMatrixP");

    mMVMatrixVH[variant]= GLES30.glGetUniformLocation(mProgramH, "u_MVMatrixV");

    }

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

  void compute(long currTime)

    {

    if( currTime==mTime ) return;

    if( mTime==0 ) mTime = currTime;

    long step = (currTime-mTime);

    float[] array = mUBF.getBackingArray();

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

      {

      if( mEffects[i].compute(array, NUM_FLOAT_UNIFORMS*i, currTime, step) )

        {

        EffectMessageSender.newMessage(mEffects[i]);

        }

      }

    mTime = currTime;  

    }  

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

  void send(float distance, float mipmap, float[] projection, int variant)

    {

    Matrix.setIdentityM(mModelViewMatrixP, 0);

    Matrix.translateM(mModelViewMatrixP, 0, 0,0, -distance);

    if( mipmap!=1 )

      {

      Matrix.scaleM(mModelViewMatrixP, 0, mipmap, mipmap, mipmap);

      }

    mModelViewMatrixV[ 0] = mModelViewMatrixP[ 0];

    mModelViewMatrixV[ 1] = mModelViewMatrixP[ 1];

    mModelViewMatrixV[ 2] = mModelViewMatrixP[ 2];

    mModelViewMatrixV[ 3] = mModelViewMatrixP[ 3];

    mModelViewMatrixV[ 4] = mModelViewMatrixP[ 4];

    mModelViewMatrixV[ 5] = mModelViewMatrixP[ 5];

    mModelViewMatrixV[ 6] = mModelViewMatrixP[ 6];

    mModelViewMatrixV[ 7] = mModelViewMatrixP[ 7];

    mModelViewMatrixV[ 8] = mModelViewMatrixP[ 8];

    mModelViewMatrixV[ 9] = mModelViewMatrixP[ 9];

    mModelViewMatrixV[10] = mModelViewMatrixP[10];

    mModelViewMatrixV[11] = mModelViewMatrixP[11];

    mModelViewMatrixV[12] = mModelViewMatrixP[12];

    mModelViewMatrixV[13] = mModelViewMatrixP[13];

    mModelViewMatrixV[14] = mModelViewMatrixP[14];

    mModelViewMatrixV[15] = mModelViewMatrixP[15];

    float[] array = mUBF.getBackingArray();

    // the 'Model' part of the MV matrix

    for(int i=mNumEffects-1; i>=0; i--)

      {

      ((MatrixEffect)mEffects[i]).apply(mModelViewMatrixP,mModelViewMatrixV,array,i);

      }

    // combined Model-View-Projection matrix

    Matrix.multiplyMM(mMVPMatrix, 0, projection, 0, mModelViewMatrixP, 0);

    GLES30.glUniformMatrix4fv(mMVMatrixVH[variant], 1, false, mModelViewMatrixV, 0);

    GLES30.glUniformMatrix4fv(mMVMatrixPH[variant], 1, false, mModelViewMatrixP, 0);

    GLES30.glUniformMatrix4fv(mMVPMatrixH[variant], 1, false, mMVPMatrix       , 0);

    }

  }