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 * Copyright (c) 2009-2010 jMonkeyEngine
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 * modification, are permitted provided that the following conditions are
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 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
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 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
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 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
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 * 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
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 */

package jme3test.light;

import com.jme3.app.SimpleApplication;
import com.jme3.effect.ParticleEmitter;
import com.jme3.effect.ParticleMesh;
import com.jme3.light.AmbientLight;
import com.jme3.light.DirectionalLight;
import com.jme3.material.Material;
import com.jme3.math.*;
import com.jme3.renderer.queue.RenderQueue.Bucket;
import com.jme3.renderer.queue.RenderQueue.ShadowMode;
import com.jme3.scene.Geometry;
import com.jme3.scene.SceneGraphVisitorAdapter;
import com.jme3.scene.Spatial;
import com.jme3.scene.control.LodControl;
import com.jme3.scene.shape.Quad;
import com.jme3.shadow.PssmShadowRenderer;
import com.jme3.shadow.PssmShadowRenderer.CompareMode;
import com.jme3.shadow.PssmShadowRenderer.FilterMode;

public class TestTransparentShadow extends SimpleApplication {

    public static void main(String[] args){
        TestTransparentShadow app = new TestTransparentShadow();
        app.start();
    }

    public void simpleInitApp() {

        cam.setLocation(new Vector3f(2.0606942f, 3.20342f, 6.7860126f));
        cam.setRotation(new Quaternion(-0.017481906f, 0.98241085f, -0.12393151f, -0.13857932f));

        viewPort.setBackgroundColor(ColorRGBA.DarkGray);

        Quad q = new Quad(20, 20);
        q.scaleTextureCoordinates(Vector2f.UNIT_XY.mult(5));
        Geometry geom = new Geometry("floor", q);
        Material mat = assetManager.loadMaterial("Textures/Terrain/Pond/Pond.j3m");
        geom.setMaterial(mat);
        
        geom.rotate(-FastMath.HALF_PI, 0, 0);
        geom.center();
        geom.setShadowMode(ShadowMode.Receive);
        rootNode.attachChild(geom);

        // create the geometry and attach it
        Spatial teaGeom = assetManager.loadModel("Models/Tree/Tree.mesh.j3o");
        teaGeom.setQueueBucket(Bucket.Transparent);
        teaGeom.setShadowMode(ShadowMode.Cast);

        teaGeom.depthFirstTraversal(new SceneGraphVisitorAdapter(){
            @Override
             public void visit(Geometry geom) {
                 LodControl lodCtrl = new LodControl();
                 lodCtrl.setTrisPerPixel(0.25f);
                 geom.addControl(lodCtrl);
             }
        });
        
        AmbientLight al = new AmbientLight();
        al.setColor(ColorRGBA.White.mult(2));
        rootNode.addLight(al);

        DirectionalLight dl1 = new DirectionalLight();
        dl1.setDirection(new Vector3f(1, -1, 1).normalizeLocal());
        dl1.setColor(new ColorRGBA(0.965f, 0.949f, 0.772f, 1f).mult(0.7f));
        rootNode.addLight(dl1);

        DirectionalLight dl = new DirectionalLight();
        dl.setDirection(new Vector3f(-1, -1, -1).normalizeLocal());
        dl.setColor(new ColorRGBA(0.965f, 0.949f, 0.772f, 1f).mult(0.7f));
        rootNode.addLight(dl);

        rootNode.attachChild(teaGeom);    
        
        /** Uses Texture from jme3-test-data library! */
        ParticleEmitter fire = new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, 30);
        Material mat_red = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
        mat_red.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
        //mat_red.getAdditionalRenderState().setDepthTest(true);
        //mat_red.getAdditionalRenderState().setDepthWrite(true);
        fire.setMaterial(mat_red);
        fire.setImagesX(2); fire.setImagesY(2); // 2x2 texture animation
        fire.setEndColor(  new ColorRGBA(1f, 0f, 0f, 1f));   // red
        fire.setStartColor(new ColorRGBA(1f, 1f, 0f, 0.5f)); // yellow
        fire.setInitialVelocity(new Vector3f(0, 2, 0));
        fire.setStartSize(0.6f);
        fire.setEndSize(0.1f);
        fire.setGravity(0, 0, 0);
        fire.setLowLife(0.5f);
        fire.setHighLife(1.5f);
        fire.setVelocityVariation(0.3f);
        fire.setLocalTranslation(1.0f, 0, 1.0f);
        fire.setLocalScale(0.3f);
        fire.setQueueBucket(Bucket.Translucent);
        rootNode.attachChild(fire);

        
        PssmShadowRenderer pssmRenderer = new PssmShadowRenderer(assetManager, 1024, 1);
        pssmRenderer.setDirection(new Vector3f(0.01f, -1f, 0.01f).normalizeLocal());
        pssmRenderer.setLambda(0.55f);
        pssmRenderer.setShadowIntensity(0.6f);
        pssmRenderer.setCompareMode(CompareMode.Software);
        pssmRenderer.setFilterMode(FilterMode.PCF4);
        pssmRenderer.displayDebug();
        viewPort.addProcessor(pssmRenderer);
    }
}