EGIOC 6

package demo.com.cube;

import android.content.Context;
import android.opengl.GLSurfaceView;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import javax.microedition.khronos.opengles.GL11;

/**
 * Created by octavian.salcianu on 3/17/2017.
 */

public class SquareRenderer implements GLSurfaceView.Renderer{

    private Square square;
    private Square square2;
    private float mTransY;
    private float mAngle;
    private Context context;

    public final static int SS_SUNLIGHT = GL10.GL_LIGHT0;

    public SquareRenderer(Context context) {
        this.context = context;

        float squareColorsYMCA[] = {
                1.0f, 1.0f, 0.0f, 1.0f,
                0.0f, 1.0f, 1.0f, 1.0f,
                0.0f, 0.0f, 0.0f, 1.0f,
                1.0f, 0.0f, 1.0f, 1.0f
        };

        float squareColorsRGBA[] = {
                1.0f, 0.0f, 0.0f, 1.0f,
                0.0f, 1.0f, 0.0f, 1.0f,
                0.0f, 0.0f, 1.0f, 1.0f,
                1.0f, 1.0f, 1.0f, 1.0f
        };

        this.square = new Square(squareColorsYMCA);
        this.square2 = new Square(squareColorsRGBA);

    }

    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
        //gl.glDisable(GL10.GL_DITHER);
        gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);
        gl.glClearColor(256,256,256,0);
        gl.glEnable(GL10.GL_CULL_FACE);

        gl.glShadeModel(GL10.GL_SMOOTH);
        gl.glEnable(GL10.GL_DEPTH_TEST);

        //int resid = R.drawable.hedly;
        //square.createTexture(gl, this.context, resid);
    }

    @Override
    public void onSurfaceChanged(GL10 gl, int width, int height) {
        gl.glViewport(0, 0, width, height);
        gl.glMatrixMode(GL10.GL_PROJECTION);
        gl.glLoadIdentity();
        float ratio = (float) width / height;
        gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);
    }

    /*

    private void initLighting(GL10 gl) {
        float[] green = {1.0f, 1.0f, 1.0f, 1.0f};
        float[] position = {0.0f, 5.0f, 0.0f, 1.0f};
        float[] red = {1.0f, 0.0f, 0,0f, 1.0f};

        gl.glLightfv(SS_SUNLIGHT, GL10.GL_POSITION, makeFloatBuffer(position));
        gl.glLightfv(SS_SUNLIGHT, GL10.GL_DIFFUSE, makeFloatBuffer(green));

        //gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, makeFloatBuffer(red));

        //gl.glLightfv(SS_SUNLIGHT,GL10.GL_SPECULAR, makeFloatBuffer(red));

        //gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, makeFloatBuffer(green));

        gl.glShadeModel(GL10.GL_SMOOTH);
        gl.glEnable(GL10.GL_LIGHTING);
        gl.glEnable(SS_SUNLIGHT);
        //gl.glEnable(GL10.GL_COLOR_MATERIAL);
    }

    protected static FloatBuffer makeFloatBuffer(float[] array) {
        ByteBuffer bb = ByteBuffer.allocateDirect(array.length*4);
        bb.order(ByteOrder.nativeOrder());
        FloatBuffer fb = bb.asFloatBuffer();
        fb.put(array);
        fb.position(0);

        return fb;

    }
    */

    @Override
    public void onDrawFrame(GL10 gl) {


        /*
        gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
        gl.glMatrixMode(GL10.GL_MODELVIEW);
        gl.glLoadIdentity();
        gl.glTranslatef(0.0f, (float) Math.sin(mTransY), -3.0f);
        mTransY += 0.075f;

        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
        gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
        square.draw(gl);
        */


        gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
        gl.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
        gl.glMatrixMode(GL11.GL_MODELVIEW);

        gl.glEnable(GL10.GL_BLEND);

        gl.glLoadIdentity();
        gl.glTranslatef(0.0f,(float)Math.sin(mTransY), -3.0f);
        //gl.glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
        square.draw(gl);

        gl.glLoadIdentity();
        gl.glTranslatef((float)(Math.sin(mTransY)/2.0f),0.0f, -2.9f);
        //gl.glColor4f(1.0f, 1.0f, 0.0f, 1.0f);
        //gl.glColorMask(true, false, true, true);
        square2.draw(gl);
        mTransY += .075f;




    }
}

package demo.com.cube;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLUtils;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import javax.microedition.khronos.opengles.GL10;
import javax.microedition.khronos.opengles.GL11;

/**
 * Created by octavian.salcianu on 3/17/2017.
 */

public class Square {
    private FloatBuffer mFVertexBuffer;
    private ByteBuffer mColorBuffer;
    private ByteBuffer mIndexBuffer;

    private FloatBuffer mColorBufferFloat;

    public FloatBuffer mTextureBuffer;

    float[] textureCoords = {
            0.0f, 0.0f,
            1.0f, 0.0f,
            0.0f, 1.0f,
            1.0f, 1.0f
    };

    private int[] textures = new int[1];

    public Square(float colorsArray[]) {
        float vertices[] = {
            -1.0f, -1.0f,
            1.0f, -1.0f,
            -1.0f, 1.0f,
            1.0f, 1.0f
        };

        byte maxColor=(byte)255;
        byte colors[] = {
                0, 0, maxColor, 0,
                0, 0, maxColor, 0,
                0, 0, maxColor, 0,
                0, 0, maxColor, 0,
        };

        byte indices[] = {
                0, 3, 1,
                0, 2, 3
        };

        ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length * 4);
        vbb.order(ByteOrder.nativeOrder());
        mFVertexBuffer = vbb.asFloatBuffer();
        mFVertexBuffer.put(vertices);
        mFVertexBuffer.position(0);

        mColorBuffer = ByteBuffer.allocateDirect(colors.length);
        mColorBuffer.put(colors);
        mColorBuffer.position(0);

        ByteBuffer cbb = ByteBuffer.allocateDirect(colorsArray.length * 4);
        cbb.order(ByteOrder.nativeOrder());
        mColorBufferFloat = cbb.asFloatBuffer();
        mColorBufferFloat.put(colorsArray);
        mColorBufferFloat.position(0);

        mIndexBuffer = ByteBuffer.allocateDirect(indices.length);
        mIndexBuffer.put(indices);
        mIndexBuffer.position(0);

        ByteBuffer tbb = ByteBuffer.allocateDirect(textureCoords.length * 4);
        tbb.order(ByteOrder.nativeOrder());
        mTextureBuffer = tbb.asFloatBuffer();
        mTextureBuffer.put(textureCoords);
        mTextureBuffer.position(0);
    }

    public void draw(GL10 gl) {
        gl.glFrontFace(GL11.GL_CW);
        gl.glVertexPointer(2, GL11.GL_FLOAT, 0, mFVertexBuffer);
        //gl.glColorPointer(4, GL11.GL_UNSIGNED_BYTE, 0, mColorBuffer);

        gl.glColorPointer(4, GL11.GL_FLOAT, 0, mColorBufferFloat);

        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
        gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
        //gl.glEnable(GL10.GL_TEXTURE_2D);

        gl.glEnable(GL10.GL_BLEND);
        //gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
        gl.glBlendFunc(GL10.GL_ONE, GL10.GL_ONE);

        //gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
        //gl.glTexCoordPointer(2, GL10.GL_FLOAT,0, mTextureBuffer);

        //gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);

        gl.glDrawElements(gl.GL_TRIANGLES, 6, gl.GL_UNSIGNED_BYTE, mIndexBuffer);
    }

    /*

    public void createTexture(GL10 gl, Context contextRegf, int resource) {
        Bitmap image = BitmapFactory.decodeResource(contextRegf.getResources(), resource);
        gl.glGenTextures(1, textures, 0);
        gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
        GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, image, 0);

        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
        image.recycle();
    }*/
}