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/*
 * Copyright (c) 2009-2021 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.jme3.app;

import com.jme3.asset.AssetManager;
import com.jme3.font.BitmapFont;
import com.jme3.font.BitmapText;
import com.jme3.renderer.RenderManager;
import com.jme3.renderer.Statistics;
import com.jme3.renderer.ViewPort;
import com.jme3.renderer.queue.RenderQueue.Bucket;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.scene.control.Control;
import com.jme3.util.clone.Cloner;
import com.jme3.util.clone.JmeCloneable;

/**
 * The StatsView provides a heads-up display (HUD) of various
 * statistics of rendering. The data is retrieved every frame from a
 * {@link com.jme3.renderer.Statistics} and then displayed on screen.
 * 

* To use the stats view, you need to retrieve the * {@link com.jme3.renderer.Statistics} from the * {@link com.jme3.renderer.Renderer} used by the application. Then, attach * the StatsView to the scene graph. *

 * Statistics stats = renderer.getStatistics();
 * StatsView statsView = new StatsView("MyStats", assetManager, stats);
 * rootNode.attachChild(statsView);
 * 
*/ public class StatsView extends Node implements Control, JmeCloneable { final private BitmapText statText; final private Statistics statistics; final private String[] statLabels; final private int[] statData; private boolean enabled = true; private final StringBuilder stringBuilder = new StringBuilder(); public StatsView(String name, AssetManager manager, Statistics stats) { super(name); setQueueBucket(Bucket.Gui); setCullHint(CullHint.Never); statistics = stats; statistics.setEnabled(enabled); statLabels = statistics.getLabels(); statData = new int[statLabels.length]; BitmapFont font = manager.loadFont("Interface/Fonts/Console.fnt"); statText = new BitmapText(font); statText.setLocalTranslation(0, statText.getLineHeight() * statLabels.length, 0); attachChild(statText); addControl(this); } public float getHeight() { return statText.getLineHeight() * statLabels.length; } @Override public void update(float tpf) { if (!isEnabled()) return; statistics.getData(statData); stringBuilder.setLength(0); // Need to walk through it backwards, as the first label // should appear at the bottom, not the top. for (int i = statLabels.length - 1; i >= 0; i--) { stringBuilder.append(statLabels[i]).append(" = ").append(statData[i]).append('\n'); } statText.setText(stringBuilder); // Moved to ResetStatsState to make sure it is // done even if there is no StatsView or the StatsView // is disabled. //statistics.clearFrame(); } @Deprecated @Override public Control cloneForSpatial(Spatial spatial) { throw new UnsupportedOperationException(); } @Override public StatsView jmeClone() { throw new UnsupportedOperationException("Not yet implemented."); } @Override public void cloneFields(Cloner cloner, Object original) { throw new UnsupportedOperationException("Not yet implemented."); } @Override public void setSpatial(Spatial spatial) { } public void setEnabled(boolean enabled) { this.enabled = enabled; statistics.setEnabled(enabled); } public boolean isEnabled() { return enabled; } @Override public void render(RenderManager rm, ViewPort vp) { } }




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