/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.tests;
import java.util.Random;
import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.VertexAttributes.Usage;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g3d.Material;
import com.badlogic.gdx.graphics.g3d.Model;
import com.badlogic.gdx.graphics.g3d.ModelBatch;
import com.badlogic.gdx.graphics.g3d.ModelInstance;
import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute;
import com.badlogic.gdx.graphics.g3d.utils.ModelBuilder;
import com.badlogic.gdx.math.Vector3;
import com.badlogic.gdx.tests.utils.GdxTest;
public class CullTest extends GdxTest implements ApplicationListener {
Model sphere;
Camera cam;
SpriteBatch batch;
ModelBatch modelBatch;
BitmapFont font;
ModelInstance[] instances = new ModelInstance[100];
final Vector3 pos = new Vector3();
@Override
public void create () {
ModelBuilder builder = new ModelBuilder();
sphere = builder.createSphere(2f, 2f, 2f, 16, 16, new Material(new ColorAttribute(ColorAttribute.Diffuse, Color.WHITE)),
Usage.Position | Usage.Normal);
// cam = new PerspectiveCamera(45, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
cam = new OrthographicCamera(45, 45 * (Gdx.graphics.getWidth() / (float)Gdx.graphics.getHeight()));
cam.near = 1;
cam.far = 200;
Random rand = new Random();
for (int i = 0; i < instances.length; i++) {
pos.set(rand.nextFloat() * 100 - rand.nextFloat() * 100, rand.nextFloat() * 100 - rand.nextFloat() * 100,
rand.nextFloat() * -100 - 3);
instances[i] = new ModelInstance(sphere, pos);
}
modelBatch = new ModelBatch();
batch = new SpriteBatch();
font = new BitmapFont();
// Gdx.graphics.setVSync(true);
// Gdx.app.log("CullTest", "" + Gdx.graphics.getBufferFormat().toString());
}
@Override
public void render () {
GL20 gl = Gdx.gl20;
gl.glClearColor(0, 0, 0, 0);
gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
gl.glEnable(GL20.GL_DEPTH_TEST);
cam.update();
modelBatch.begin(cam);
int visible = 0;
for (int i = 0; i < instances.length; i++) {
instances[i].transform.getTranslation(pos);
if (cam.frustum.sphereInFrustum(pos, 1)) {
((ColorAttribute)instances[i].materials.get(0).get(ColorAttribute.Diffuse)).color.set(Color.WHITE);
visible++;
} else {
((ColorAttribute)instances[i].materials.get(0).get(ColorAttribute.Diffuse)).color.set(Color.RED);
}
modelBatch.render(instances[i]);
}
modelBatch.end();
if (Gdx.input.isKeyPressed(Keys.A)) cam.rotate(20 * Gdx.graphics.getDeltaTime(), 0, 1, 0);
if (Gdx.input.isKeyPressed(Keys.D)) cam.rotate(-20 * Gdx.graphics.getDeltaTime(), 0, 1, 0);
gl.glDisable(GL20.GL_DEPTH_TEST);
batch.begin();
font.draw(batch, "visible: " + visible + "/100" + ", fps: " + Gdx.graphics.getFramesPerSecond(), 0, 20);
batch.end();
}
@Override
public void dispose () {
batch.dispose();
font.dispose();
sphere.dispose();
}
}