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« on: September 08, 2011, 03:06:59 pm »
I am displaying a solid wall (platform) using Box primitive.The code works fine and it displays th boxes continuously on x-axis.But the problem is that it gives a space between the two adjuscent boxes.That way it reduces the impression of wall.
package org.me.home;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.MotionEvent;
import com.threed.jpct.Camera;
import com.threed.jpct.FrameBuffer;
import com.threed.jpct.Light;
import com.threed.jpct.Logger;
import com.threed.jpct.Object3D;
import com.threed.jpct.Primitives;
import com.threed.jpct.RGBColor;
import com.threed.jpct.SimpleVector;
import com.threed.jpct.World;
import com.threed.jpct.util.MemoryHelper;
import java.lang.reflect.Field;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;
/**
*
* @author Gamerfan
*/
public class MainActivity extends Activity {
// Used to handle pause and resume...
private static MainActivity master = null;
private GLSurfaceView mGLView;
private MyRenderer renderer = null;
private FrameBuffer fb = null;
private World world = null;
private RGBColor back = new RGBColor(50, 50, 100);
private float touchTurn = 0;
private float touchTurnUp = 0;
private float xpos = -1;
private float ypos = -1;
private Object3D cube = null;
private Object3D box = null;
private Object3D newbox = null;
private int fps = 0;
private Light sun = null;
private float xDelta = 0;
private float yDelta = 0;
private float zDelta = 0;
private int counter = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
Logger.log("onCreate");
if (master != null) {
copy(master);
}
super.onCreate(savedInstanceState);
mGLView = new GLSurfaceView(getApplication());
mGLView.setEGLConfigChooser(new GLSurfaceView.EGLConfigChooser() {
public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
// Ensure that we get a 16bit framebuffer. Otherwise, we'll fall
// back to Pixelflinger on some device (read: Samsung I7500)
int[] attributes = new int[] { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };
EGLConfig[] configs = new EGLConfig[1];
int[] result = new int[1];
egl.eglChooseConfig(display, attributes, configs, 1, result);
return configs[0];
}
});
renderer = new MyRenderer();
mGLView.setRenderer(renderer);
setContentView(mGLView);
}
@Override
protected void onPause() {
super.onPause();
mGLView.onPause();
}
@Override
protected void onResume() {
super.onResume();
mGLView.onResume();
}
@Override
protected void onStop() {
super.onStop();
}
private void copy(Object src) {
try {
Logger.log("Copying data from master Activity!");
Field[] fs = src.getClass().getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
f.set(this, f.get(src));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public boolean onTouchEvent(MotionEvent me) {
if (me.getAction() == MotionEvent.ACTION_DOWN) {
xpos = me.getX();
ypos = me.getY();
return true;
}
if (me.getAction() == MotionEvent.ACTION_UP) {
xpos = -1;
ypos = -1;
touchTurn = 0;
touchTurnUp = 0;
return true;
}
if (me.getAction() == MotionEvent.ACTION_MOVE) {
float xd = me.getX() - xpos;
float yd = me.getY() - ypos;
xpos = me.getX();
ypos = me.getY();
touchTurn = xd / -100f;
touchTurnUp = yd / -100f;
return true;
}
try {
Thread.sleep(15);
} catch (Exception e) {
// No need for this...
}
return super.onTouchEvent(me);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent msg) {
if( keyCode == KeyEvent.KEYCODE_A ) {
System.out.println(" total angle swept " + box.getTransformedCenter().calcAngle(box.getXAxis()) );
newbox = box.cloneObject();
newbox.setAdditionalColor(new RGBColor(225, 0, 10));
SimpleVector sv = new SimpleVector();
sv.x+=xDelta;
// sv.y+=yDelta;
// sv.z+=zDelta;
newbox.translate( sv );
world.addObject( newbox );
world.buildAllObjects();
xDelta+=1.5f;
// yDelta+=0.25f;
// zDelta+=1.25f;
return true;
}
return true;
}
private Object3D drawRectangle() {
Object3D rectangle = new Object3D(20);
for (int y=0; y < 10; y++) {
float fY = y / -10f;
rectangle.addTriangle(new SimpleVector(-1, fY, 1), 0, 0,
new SimpleVector(-1, fY, -1), 0, 1,
new SimpleVector(1, fY, -1), 1, 1);
rectangle.addTriangle(new SimpleVector(1, fY, -1), 1, 1,
new SimpleVector(1, fY, 1), 1, 0,
new SimpleVector(-1, fY, 1), 0, 0);
}
return rectangle;
}
protected boolean isFullscreenOpaque() {
return true;
}
class MyRenderer implements GLSurfaceView.Renderer {
private long time = System.currentTimeMillis();
public MyRenderer() {
}
public void onSurfaceChanged(GL10 gl, int w, int h) {
if (fb != null) {
fb.dispose();
}
fb = new FrameBuffer(gl, w, h);
if (master == null) {
world = new World();
world.setAmbientLight(20, 20, 20);
sun = new Light(world);
sun.setIntensity(250, 250, 250);
// Create a texture out of the icon...:-)
//Texture texture = new Texture(BitmapHelper.rescale(BitmapHelper.convert(getResources().getDrawable(R.drawable.icon)), 64, 64));
//TextureManager.getInstance().addTexture("texture", texture);
cube = Primitives.getCube(1);
//cube.calcTextureWrapSpherical();
//cube.setTexture("texture");
//cube.strip();
//cube.build();
box = Primitives.getBox(1.5f, 0.75f);
box.translate(-10, 10, 0);
box.translateMesh();
world.addObject(cube);
world.addObject(box);
Camera cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 50);
cam.lookAt(cube.getTransformedCenter());
SimpleVector sv = new SimpleVector();
sv.set(cube.getTransformedCenter());
sv.y -= 100;
sv.z -= 100;
sun.setPosition(sv);
MemoryHelper.compact();
if (master == null) {
Logger.log("Saving master Activity!");
master = MainActivity.this;
}
}
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
}
public void onDrawFrame(GL10 gl) {
if (touchTurn != 0) {
cube.rotateY(touchTurn);
box.rotateY(touchTurn) ;
if( newbox != null)
newbox.rotateY(touchTurn) ;
touchTurn = 0;
yDelta +=0.02f;
}
if (touchTurnUp != 0) {
cube.rotateX( touchTurnUp );
touchTurnUp = 0;
}
fb.clear(back);
world.renderScene(fb);
world.draw(fb);
fb.display();
if (System.currentTimeMillis() - time >= 1000) {
//Logger.log(fps + "fps");
fps = 0;
time = System.currentTimeMillis();
}
fps++;
}
}
}
When I press 'A' key , a new box is created using cloning the existing one.The following piece of code that performs it.
@Override
public boolean onKeyDown(int keyCode, KeyEvent msg) {
if( keyCode == KeyEvent.KEYCODE_A ) {
System.out.println(" total angle swept " + box.getTransformedCenter().calcAngle(box.getXAxis()) );
newbox = box.cloneObject();
newbox.setAdditionalColor(new RGBColor(225, 0, 10));
SimpleVector sv = new SimpleVector();
sv.x+=xDelta;
// sv.y+=yDelta;
// sv.z+=zDelta;
newbox.translate( sv );
world.addObject( newbox );
world.buildAllObjects();
xDelta+=1.5f;
// yDelta+=0.25f;
// zDelta+=1.25f;
return true;
}
return true;
}
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