Tin.java

package org.cugos.wkg;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * A Tin is a Surface made up of Triangles
 * @author Jared Erickson
 */
public class Tin extends Surface {

    /**
     * The List of Triangles
     */
    private final List<Triangle> triangles;

    /**
     * Create a new Tin
     * @param triangles The List of Triangles
     * @param dimension The Dimension
     */
    public Tin(List<Triangle> triangles, Dimension dimension) {
        this(triangles, dimension, null);
    }

    /**
     * Create a new Tin
     * @param triangles The List of Triangles
     * @param dimension The Dimension
     * @param srid The SRID
     */
    public Tin(List<Triangle> triangles, Dimension dimension, String srid) {
        super(dimension, srid);
        this.triangles = Collections.unmodifiableList(triangles);
    }

    /**
     * Get the List of Triangles
     * @return The List of Triangles
     */
    public List<Triangle> getTriangles() {
        return triangles;
    }

    @Override
    public boolean isEmpty() {
        return triangles.isEmpty();
    }

    @Override
    public int getNumberOfCoordinates() {
        int numberOfCoordinates = 0;
        for(Triangle triangle : this.triangles) {
            numberOfCoordinates += triangle.getNumberOfCoordinates();
        }
        return numberOfCoordinates;
    }

    @Override
    public List<Coordinate> getCoordinates() {
        List<Coordinate> coordinates = new ArrayList<Coordinate>();
        for(Triangle triangle : this.triangles) {
            coordinates.addAll(triangle.getCoordinates());
        }
        return Collections.unmodifiableList(coordinates);
    }

    /**
     * Create an empty Tin
     * @return An empty Tin
     */
    public static Tin createEmpty() {
        return new Tin(new ArrayList<Triangle>(), Dimension.Two, null);
    }
}