Laborator 5
import android.content.Context;
import android.graphics.*;
import android.opengl.*;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.opengles.GL10;
import javax.microedition.khronos.opengles.GL11;
public class Square {
private FloatBuffer mFVertexBuffer;
private ByteBuffer mColorBuffer;
private ByteBuffer mIndexBuffer;
private int[] textures = new int[1];
public FloatBuffer mTextureBuffer;
private float[] textureCoords =
{
0.0f, 0.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f
};
private float texIncrease;
public Square() {
float vertices[] =
{
-1.0f, -0.7f,
1.0f, -0.30f,
-1.0f, 0.70f,
1.0f, 0.30f,
};
byte maxColor=(byte)255;
byte colors[] =
{
0, 0, 0, maxColor,
maxColor, 0, 0, maxColor,
0, 0, 0, maxColor,
maxColor, 0, 0, maxColor,
};
byte indices[] =
{
0, 3, 1,
0, 2, 3
};
ByteBuffer tbb = ByteBuffer.allocateDirect(textureCoords.length * 4);
tbb.order(ByteOrder.nativeOrder());
mTextureBuffer = tbb.asFloatBuffer();
mTextureBuffer.put(textureCoords);
mTextureBuffer.position(0);
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);
mIndexBuffer = ByteBuffer.allocateDirect(indices.length);
mIndexBuffer.put(indices);
mIndexBuffer.position(0);
}
public void draw(GL10 gl) {
gl.glVertexPointer(2, GL10.GL_FLOAT, 0, mFVertexBuffer);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glColorPointer(4, GL10.GL_UNSIGNED_BYTE, 0, mColorBuffer);
gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glEnable(GL10.GL_BLEND);
gl.glBlendFunc(GL10.GL_ONE, GL10.GL_SRC_COLOR);
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
gl.glTexCoordPointer(2, GL10.GL_FLOAT,0, mTextureBuffer);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glFrontFace(GL11.GL_CW);
gl.glVertexPointer(2, GL11.GL_FLOAT, 0, mFVertexBuffer);
//gl.glColorPointer(4, GL11.GL_UNSIGNED_BYTE, 0, mColorBuffer);
gl.glDrawElements(GL11.GL_TRIANGLES, 6, GL11.GL_UNSIGNED_BYTE, mIndexBuffer);
textureCoords[0]+=texIncrease;
textureCoords[1]+=texIncrease;
textureCoords[2]+=texIncrease;
textureCoords[3]+=texIncrease;
textureCoords[4]+=texIncrease;
textureCoords[5]+=texIncrease;
textureCoords[6]+=texIncrease;
textureCoords[7]+=texIncrease;
}
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();
}
}
import android.content.Context;
import android.opengl.GLSurfaceView;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
public class SquareRenderer implements GLSurfaceView.Renderer {
private Square mSquare;
private float mTransY;
private Context context;
public SquareRenderer(Context context)
{
this.context = context;
this.mSquare = new Square();
}
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);
mSquare.draw(gl);
}
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);
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
//gl.glDisable(GL10.GL_DITHER);
gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);
gl.glClearColor(0,0,0,0);
gl.glEnable(GL10.GL_CULL_FACE);
gl.glShadeModel(GL10.GL_SMOOTH);
gl.glEnable(GL10.GL_DEPTH_TEST);
int resid = R.drawable.cat;
mSquare.createTexture(gl, this.context, resid);
}
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.WindowManager;
public class MainActivity extends AppCompatActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
GLSurfaceView view = new GLSurfaceView(this);
view.setRenderer(new SquareRenderer(this.getApplicationContext()));
setContentView(view);
}
}