Android Open Source - splott Render

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License

The source code is released under:

MIT License

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Java Source Code

package com.wordsaretoys.splott.plotter;
/*w w w .  j a v  a 2 s. c o m*/
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.opengl.GLES20;
import android.opengl.GLSurfaceView;

import com.wordsaretoys.rise.geometry.Camera;
import com.wordsaretoys.rise.geometry.Vector;
import com.wordsaretoys.rise.utility.Interval;

/**
 * rendering object for gl surface
 * provides timer, gl & worker thread, and camera/motion state 
 */
public class Render implements GLSurfaceView.Renderer {

  // surface model object
  // made static for cheap access from activity
  public static Surface surface;
  
  // player eye-line camera
  public Camera camera;
  
  // looking state
  Vector looking = new Vector();

  // timer interval
  Interval interval = new Interval();
  
  // movement handling vectors
  Vector direction = new Vector();
  Vector velocity = new Vector();

  // gl view parent
  GlView parent;

  /**
   * ctor
   */
  public Render(GlView p) {
    camera = new Camera(30, 0.01f, 100);
    parent = p;
  }
  
  @Override
  public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    GLES20.glClearDepthf(1.0f);
    GLES20.glDepthFunc(GLES20.GL_LEQUAL);
    GLES20.glEnable(GLES20.GL_DEPTH_TEST);
    GLES20.glClearColor(1f, 0.8f, 0.8f, 1);
    GLES20.glDisable(GLES20.GL_BLEND);
    GLES20.glDisable(GLES20.GL_CULL_FACE);
    
    surface = new Surface(parent);
  }

  @Override
  public void onSurfaceChanged(GL10 gl, int width, int height) {
    camera.size(width, height);
  }

  @Override
  public void onDrawFrame(GL10 gl) {
    updateCamera();
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
    surface.draw(camera);
  }
  
  public void setLook(float dx, float dy) {
    looking.set(-0.5f * dy, -0.5f * dx, 0);
  }
  
  public void updateCamera() {
    float dt = interval.next();
    // rotate camera
    camera.turn(0.25f * looking.x * dt, 0.25f * looking.y * dt, 0);
    looking.mul(0.9f);
  }
}

Java Source Code List