test.gov.nasa.worldwind.render.PolygonTest Maven / Gradle / Ivy

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World Wind is a collection of components that interactively display 3D geographic information within Java applications or applets.

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/*
 * Copyright (C) 2012 United States Government as represented by the Administrator of the
 * National Aeronautics and Space Administration.
 * All Rights Reserved.
 */

package gov.nasa.worldwind.render;

import gov.nasa.worldwind.WorldWind;
import gov.nasa.worldwind.geom.*;
import gov.nasa.worldwind.globes.*;
import junit.framework.TestCase;

import java.util.*;

/**
 * Unit tests for {@link Polygon}.
 *
 * @author pabercrombie
 * @version $Id: PolygonTest.java 563 2012-04-26 18:16:22Z pabercrombie $
 */
public class PolygonTest
{
    protected Globe globe = new Earth();
    protected double verticalExaggeration = 1.0;

    protected List positions = Arrays.asList(
        Position.fromDegrees(28, -106, 0),
        Position.fromDegrees(35, -104, 0),
        Position.fromDegrees(28, -107, 100),
        Position.fromDegrees(28, -106, 0));
    protected Sector sector = Sector.boundingSector(this.positions);

    public void testGetExtentClampToGround()
    {
        double[] minAndMaxElevations = this.globe.getMinAndMaxElevations(this.sector);

        Extent expected = Sector.computeBoundingBox(this.globe, this.verticalExaggeration, this.sector,
            minAndMaxElevations[0],
            minAndMaxElevations[1]);

        Polygon pgon = new Polygon(this.positions);
        pgon.setAltitudeMode(WorldWind.CLAMP_TO_GROUND);

        Extent actual = pgon.getExtent(this.globe, this.verticalExaggeration);

        TestCase.assertEquals(expected, actual);
    }

    public void testGetExtentAbsolute()
    {
        Extent expected = Sector.computeBoundingBox(this.globe, this.verticalExaggeration, this.sector, 0, 100);

        Polygon pgon = new Polygon(this.positions);
        pgon.setAltitudeMode(WorldWind.ABSOLUTE);

        Extent actual = pgon.getExtent(this.globe, this.verticalExaggeration);

        TestCase.assertEquals(expected, actual);
    }

    public void testGetExtentRelative()
    {
        double[] minAndMaxElevations = this.globe.getMinAndMaxElevations(this.sector);

        Extent expected = Sector.computeBoundingBox(this.globe, this.verticalExaggeration, this.sector,
            minAndMaxElevations[1], minAndMaxElevations[1] + 100);

        Polygon pgon = new Polygon(this.positions);
        pgon.setAltitudeMode(WorldWind.RELATIVE_TO_GROUND);

        Extent actual = pgon.getExtent(this.globe, this.verticalExaggeration);

        TestCase.assertEquals(expected, actual);
    }
}