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/*
 * Copyright (c) 2009-2017 jMonkeyEngine
 * All rights reserved.
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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
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 *   may be used to endorse or promote products derived from this software
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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
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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package com.jme3.scene;

import com.jme3.collision.CollisionResults;
import com.jme3.math.FastMath;
import com.jme3.math.Ray;
import com.jme3.math.Vector3f;
import com.jme3.scene.shape.Cylinder;
import java.util.Random;
import org.junit.Test;

/**
 * Ensures that geometries behave correctly, by casting rays and ensure they don't break.
 *
 * @author Christophe Carpentier
 */
public class ShapeGeometryTest {

    protected static final int NUMBER_OF_TRIES = 1000;
    
    @Test
    public void testCylinders() {
        Random random = new Random();
        
        // Create a cylinder, cast a random ray, and ensure everything goes well.
        Node scene = new Node("Scene Node");

        for (int i = 0; i < NUMBER_OF_TRIES; i++) {
            scene.detachAllChildren();

            Cylinder cylinder = new Cylinder(2, 8, 1, 1, true);
            Geometry geometry = new Geometry("cylinder", cylinder);
            geometry.rotate(FastMath.HALF_PI, 0, 0);
            scene.attachChild(geometry);

            // Cast a random ray, and count successes and IndexOutOfBoundsExceptions.
            Vector3f randomPoint = new Vector3f(random.nextFloat(), random.nextFloat(), random.nextFloat());
            Vector3f randomDirection = new Vector3f(random.nextFloat(), random.nextFloat(), random.nextFloat());
            randomDirection.normalizeLocal();

            Ray ray = new Ray(randomPoint, randomDirection);
            CollisionResults collisionResults = new CollisionResults();

            // If the geometry is invalid, this should throw various exceptions.
            scene.collideWith(ray, collisionResults);
        }
    }
}