/* * Copyright (C) 2008 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.example.android.apis.graphics.kube;import android.app.Activity;import android.os.Bundle;import android.view.Window;import com.example.android.apis.graphics.GLSurfaceView;import java.util.Random;public class Kube extends Activity implements KubeRenderer.AnimationCallback {    private GLWorld makeGLWorld()    {        GLWorld world = new GLWorld();        int one = 0x10000;        int half = 0x08000;        GLColor red = new GLColor(one, 0, 0);        GLColor green = new GLColor(0, one, 0);        GLColor blue = new GLColor(0, 0, one);        GLColor yellow = new GLColor(one, one, 0);        GLColor orange = new GLColor(one, half, 0);        GLColor white = new GLColor(one, one, one);        GLColor black = new GLColor(0, 0, 0);        // coordinates for our cubes        float c0 = -1.0f;        float c1 = -0.38f;        float c2 = -0.32f;        float c3 = 0.32f;        float c4 = 0.38f;        float c5 = 1.0f;        // top back, left to right        mCubes[0]  = new Cube(world, c0, c4, c0, c1, c5, c1);        mCubes[1]  = new Cube(world, c2, c4, c0, c3, c5, c1);        mCubes[2]  = new Cube(world, c4, c4, c0, c5, c5, c1);        // top middle, left to right        mCubes[3]  = new Cube(world, c0, c4, c2, c1, c5, c3);        mCubes[4]  = new Cube(world, c2, c4, c2, c3, c5, c3);        mCubes[5]  = new Cube(world, c4, c4, c2, c5, c5, c3);        // top front, left to right        mCubes[6]  = new Cube(world, c0, c4, c4, c1, c5, c5);        mCubes[7]  = new Cube(world, c2, c4, c4, c3, c5, c5);        mCubes[8]  = new Cube(world, c4, c4, c4, c5, c5, c5);        // middle back, left to right        mCubes[9]  = new Cube(world, c0, c2, c0, c1, c3, c1);        mCubes[10] = new Cube(world, c2, c2, c0, c3, c3, c1);        mCubes[11] = new Cube(world, c4, c2, c0, c5, c3, c1);        // middle middle, left to right        mCubes[12] = new Cube(world, c0, c2, c2, c1, c3, c3);        mCubes[13] = null;        mCubes[14] = new Cube(world, c4, c2, c2, c5, c3, c3);        // middle front, left to right        mCubes[15] = new Cube(world, c0, c2, c4, c1, c3, c5);        mCubes[16] = new Cube(world, c2, c2, c4, c3, c3, c5);        mCubes[17] = new Cube(world, c4, c2, c4, c5, c3, c5);        // bottom back, left to right        mCubes[18] = new Cube(world, c0, c0, c0, c1, c1, c1);        mCubes[19] = new Cube(world, c2, c0, c0, c3, c1, c1);        mCubes[20] = new Cube(world, c4, c0, c0, c5, c1, c1);        // bottom middle, left to right        mCubes[21] = new Cube(world, c0, c0, c2, c1, c1, c3);        mCubes[22] = new Cube(world, c2, c0, c2, c3, c1, c3);        mCubes[23] = new Cube(world, c4, c0, c2, c5, c1, c3);        // bottom front, left to right        mCubes[24] = new Cube(world, c0, c0, c4, c1, c1, c5);        mCubes[25] = new Cube(world, c2, c0, c4, c3, c1, c5);        mCubes[26] = new Cube(world, c4, c0, c4, c5, c1, c5);        // paint the sides        int i, j;        // set all faces black by default        for (i = 0; i < 27; i++) {            Cube cube = mCubes[i];            if (cube != null) {                for (j = 0; j < 6; j++)                    cube.setFaceColor(j, black);            }        }        // paint top        for (i = 0; i < 9; i++)            mCubes[i].setFaceColor(Cube.kTop, orange);        // paint bottom        for (i = 18; i < 27; i++)            mCubes[i].setFaceColor(Cube.kBottom, red);        // paint left        for (i = 0; i < 27; i += 3)            mCubes[i].setFaceColor(Cube.kLeft, yellow);        // paint right        for (i = 2; i < 27; i += 3)            mCubes[i].setFaceColor(Cube.kRight, white);        // paint back        for (i = 0; i < 27; i += 9)            for (j = 0; j < 3; j++)                mCubes[i + j].setFaceColor(Cube.kBack, blue);        // paint front        for (i = 6; i < 27; i += 9)            for (j = 0; j < 3; j++)                mCubes[i + j].setFaceColor(Cube.kFront, green);        for (i = 0; i < 27; i++)            if (mCubes[i] != null)                world.addShape(mCubes[i]);        // initialize our permutation to solved position        mPermutation = new int[27];        for (i = 0; i < mPermutation.length; i++)            mPermutation[i] = i;        createLayers();        updateLayers();        world.generate();        return world;    }    private void createLayers() {        mLayers[kUp] = new Layer(Layer.kAxisY);        mLayers[kDown] = new Layer(Layer.kAxisY);        mLayers[kLeft] = new Layer(Layer.kAxisX);        mLayers[kRight] = new Layer(Layer.kAxisX);        mLayers[kFront] = new Layer(Layer.kAxisZ);        mLayers[kBack] = new Layer(Layer.kAxisZ);        mLayers[kMiddle] = new Layer(Layer.kAxisX);        mLayers[kEquator] = new Layer(Layer.kAxisY);        mLayers[kSide] = new Layer(Layer.kAxisZ);    }    private void updateLayers() {        Layer layer;        GLShape[] shapes;        int i, j, k;        // up layer        layer = mLayers[kUp];        shapes = layer.mShapes;        for (i = 0; i < 9; i++)            shapes[i] = mCubes[mPermutation[i]];        // down layer        layer = mLayers[kDown];        shapes = layer.mShapes;        for (i = 18, k = 0; i < 27; i++)            shapes[k++] = mCubes[mPermutation[i]];        // left layer        layer = mLayers[kLeft];        shapes = layer.mShapes;        for (i = 0, k = 0; i < 27; i += 9)            for (j = 0; j < 9; j += 3)                shapes[k++] = mCubes[mPermutation[i + j]];        // right layer        layer = mLayers[kRight];        shapes = layer.mShapes;        for (i = 2, k = 0; i < 27; i += 9)            for (j = 0; j < 9; j += 3)                shapes[k++] = mCubes[mPermutation[i + j]];        // front layer        layer = mLayers[kFront];        shapes = layer.mShapes;        for (i = 6, k = 0; i < 27; i += 9)            for (j = 0; j < 3; j++)                shapes[k++] = mCubes[mPermutation[i + j]];        // back layer        layer = mLayers[kBack];        shapes = layer.mShapes;        for (i = 0, k = 0; i < 27; i += 9)            for (j = 0; j < 3; j++)                shapes[k++] = mCubes[mPermutation[i + j]];        // middle layer        layer = mLayers[kMiddle];        shapes = layer.mShapes;        for (i = 1, k = 0; i < 27; i += 9)            for (j = 0; j < 9; j += 3)                shapes[k++] = mCubes[mPermutation[i + j]];        // equator layer        layer = mLayers[kEquator];        shapes = layer.mShapes;        for (i = 9, k = 0; i < 18; i++)            shapes[k++] = mCubes[mPermutation[i]];        // side layer        layer = mLayers[kSide];        shapes = layer.mShapes;        for (i = 3, k = 0; i < 27; i += 9)            for (j = 0; j < 3; j++)                shapes[k++] = mCubes[mPermutation[i + j]];    }    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        // We don't need a title either.        requestWindowFeature(Window.FEATURE_NO_TITLE);        mView = new GLSurfaceView(getApplication());        mRenderer = new KubeRenderer(makeGLWorld(), this);        mView.setRenderer(mRenderer);        setContentView(mView);    }    @Override    protected void onResume()    {        super.onResume();        mView.onResume();    }    @Override    protected void onPause()    {        super.onPause();        mView.onPause();    }    public void animate() {        // change our angle of view        mRenderer.setAngle(mRenderer.getAngle() + 1.2f);        if (mCurrentLayer == null) {            int layerID = mRandom.nextInt(9);            mCurrentLayer = mLayers[layerID];            mCurrentLayerPermutation = mLayerPermutations[layerID];            mCurrentLayer.startAnimation();            boolean direction = mRandom.nextBoolean();            int count = mRandom.nextInt(3) + 1;            count = 1;            direction = false;            mCurrentAngle = 0;             if (direction) {                mAngleIncrement = (float)Math.PI / 50;                   mEndAngle = mCurrentAngle + ((float)Math.PI * count) / 2f;               } else {                mAngleIncrement = -(float)Math.PI / 50;                   mEndAngle = mCurrentAngle - ((float)Math.PI * count) / 2f;            }        }         mCurrentAngle += mAngleIncrement;         if ((mAngleIncrement > 0f && mCurrentAngle >= mEndAngle) ||                 (mAngleIncrement < 0f && mCurrentAngle <= mEndAngle)) {             mCurrentLayer.setAngle(mEndAngle);             mCurrentLayer.endAnimation();             mCurrentLayer = null;             // adjust mPermutation based on the completed layer rotation             int[] newPermutation = new int[27];             for (int i = 0; i < 27; i++) {                newPermutation[i] = mPermutation[mCurrentLayerPermutation[i]]; //    			newPermutation[i] = mCurrentLayerPermutation[mPermutation[i]];             }             mPermutation = newPermutation;             updateLayers();         } else {             mCurrentLayer.setAngle(mCurrentAngle);         }    }    GLSurfaceView mView;    KubeRenderer mRenderer;    Cube[] mCubes = new Cube[27];    // a Layer for each possible move    Layer[] mLayers = new Layer[9];    // permutations corresponding to a pi/2 rotation of each layer about its axis    static int[][] mLayerPermutations = {            // permutation for UP layer            { 2, 5, 8, 1, 4, 7, 0, 3, 6, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 },            // permutation for DOWN layer            { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 23, 26, 19, 22, 25, 18, 21, 24 },            // permutation for LEFT layer            { 6, 1, 2, 15, 4, 5, 24, 7, 8, 3, 10, 11, 12, 13, 14, 21, 16, 17, 0, 19, 20, 9, 22, 23, 18, 25, 26 },            // permutation for RIGHT layer            { 0, 1, 8, 3, 4, 17, 6, 7, 26, 9, 10, 5, 12, 13, 14, 15, 16, 23, 18, 19, 2, 21, 22, 11, 24, 25, 20 },            // permutation for FRONT layer            { 0, 1, 2, 3, 4, 5, 24, 15, 6, 9, 10, 11, 12, 13, 14, 25, 16, 7, 18, 19, 20, 21, 22, 23, 26, 17, 8 },            // permutation for BACK layer            { 18, 9, 0, 3, 4, 5, 6, 7, 8, 19, 10, 1, 12, 13, 14, 15, 16, 17, 20, 11, 2, 21, 22, 23, 24, 25, 26 },            // permutation for MIDDLE layer            { 0, 7, 2, 3, 16, 5, 6, 25, 8, 9, 4, 11, 12, 13, 14, 15, 22, 17, 18, 1, 20, 21, 10, 23, 24, 19, 26 },            // permutation for EQUATOR layer            { 0, 1, 2, 3, 4, 5, 6, 7, 8, 11, 14, 17, 10, 13, 16, 9, 12, 15, 18, 19, 20, 21, 22, 23, 24, 25, 26 },            // permutation for SIDE layer            { 0, 1, 2, 21, 12, 3, 6, 7, 8, 9, 10, 11, 22, 13, 4, 15, 16, 17, 18, 19, 20, 23, 14, 5, 24, 25, 26 }    };    // current permutation of starting position    int[] mPermutation;    // for random cube movements    Random mRandom = new Random(System.currentTimeMillis());    // currently turning layer    Layer mCurrentLayer = null;    // current and final angle for current Layer animation    float mCurrentAngle, mEndAngle;    // amount to increment angle    float mAngleIncrement;    int[] mCurrentLayerPermutation;    // names for our 9 layers (based on notation from http://www.cubefreak.net/notation.html)    static final int kUp = 0;    static final int kDown = 1;    static final int kLeft = 2;    static final int kRight = 3;    static final int kFront = 4;    static final int kBack = 5;    static final int kMiddle = 6;    static final int kEquator = 7;    static final int kSide = 8;}