立体の大きさ変更について

お世話になってます
今立体を表示するコードで立方体を表示されているのですが、
直方体も表示したいと思っています。
int verticesだけ、byte indicesだけを変えるのかもしくは両方を変えるかわかりません。
教えてください。
例なんかもあるとありがたいです

import javax.microedition.khronos.opengles.GL10;

/**
 * Created by PC632G on 2016/11/22.
 */
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.nio.ByteOrder;
import javax.microedition.khronos.opengles.GL10;

public class Cube{
    public Cube(){
        int one = 0x10000;
        int vertices[] = {
                -one, -one, -one,
                one, -one, -one,
                one, one, -one,

                -one, one, -one,
                -one, -one, one,
                one, -one, one,

                one, one, one,
                -one, one, one
        };
        int colors[] = {
                one, one, one, one,
                one, one, one, one,
                one, one, one, one,
                one, one, one, one,
                one, one, one, one,
                one, one, one, one,
                one, one, one, one,
                one, one, one, one
        };
        byte indices[] = {
                0,4,5, 0,5,1,
                1,5,6, 1,6,2,
                2,6,7, 2,7,3,
                3,7,4, 3,4,0,
                4,7,6, 4,6,5,
                3,0,1, 3,1,2
        };

        mVertexBuffer = setupIntBuffer(vertices);
        mColorBuffer = setupIntBuffer(colors);
        mIndexBuffer = setupByteBuffer(indices);
    }

    // draw
    //-------------------------
    public void draw(GL10 gl){
        gl.glFrontFace(GL10.GL_CW);
        gl.glVertexPointer(3, GL10.GL_FIXED, 0, mVertexBuffer);
        gl.glColorPointer(4, GL10.GL_FIXED, 0, mColorBuffer);
        gl.glDrawElements(GL10.GL_TRIANGLES, mIndexBuffer.capacity(), GL10.GL_UNSIGNED_BYTE, mIndexBuffer);
    }

    // util
    //-------------------------
    private IntBuffer setupIntBuffer( int[] arrays ){
        // prepare ver
        //
        // tex
        ByteBuffer arrayBuffer = ByteBuffer.allocateDirect(arrays.length*4);
        arrayBuffer.order(ByteOrder.nativeOrder());
        IntBuffer intBuffer = arrayBuffer.asIntBuffer();
        intBuffer.put(arrays);
        intBuffer.position(0);
        return intBuffer;
    }
    private ByteBuffer setupByteBuffer( byte []arrays ){
        ByteBuffer byteBuffer = ByteBuffer.allocateDirect(arrays.length);
        byteBuffer.put(arrays);
        byteBuffer.position(0);
        return byteBuffer;
    }
    private IntBuffer mColorBuffer;
    private IntBuffer mVertexBuffer;
    private ByteBuffer mIndexBuffer;
}