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A Java based CSG Cad library
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/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package eu.mihosoft.vrl.v3d;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

// TODO: Auto-generated Javadoc
/**
 * Polyhedron.
 *
 * @author Michael Hoffer <[email protected]>
 */
public class Polyhedron extends Primitive {

    /** The properties. */
    private final PropertyStorage properties = new PropertyStorage();

    /** The points. */
    private final List points = new ArrayList<>();
    
    /** The faces. */
    private final List> faces = new ArrayList<>();

    /**
     * Constructor. Creates a polyhedron defined by a list of points and a list
     * of faces.
     *
     * @param points points ({@link Vector3d} list)
     * @param faces list of faces (list of point index lists)
     */
    public Polyhedron(List points, List> faces) {
        this.points.addAll(points);
        this.faces.addAll(faces);
    }

    /**
     * Constructor. Creates a polyhedron defined by a list of points and a list
     * of faces.
     *
     * @param points points ({@link Vector3d} array)
     * @param faces list of faces (array of point index arrays)
     */
    public Polyhedron(Vector3d[] points, Integer[][] faces) {
        this.points.addAll(Arrays.asList(points));

        for (Integer[] list : faces) {
            this.faces.add(Arrays.asList(list));
        }

    }

    /* (non-Javadoc)
     * @see eu.mihosoft.vrl.v3d.Primitive#toPolygons()
     */
    @Override
    public List toPolygons() {

        Function indexToPoint = (Integer i) -> {
            return points.get(i).clone();
        };

        Function, Polygon> faceListToPolygon
                = (List faceList) -> {
                    return Polygon.fromPoints(faceList.stream().map(indexToPoint).
                            collect(Collectors.toList()), properties);
                };

        return faces.stream().map(faceListToPolygon).
                collect(Collectors.toList());
    }

    /* (non-Javadoc)
     * @see eu.mihosoft.vrl.v3d.Primitive#getProperties()
     */
    @Override
    public PropertyStorage getProperties() {
        return properties;
    }

}