Examples of com.spatial4j.core.shape.Rectangle

com.spatial4j.core.shape.Rectangle
A rectangle aligned with the axis (i.e. it is not at an angle).
In geospatial contexts, it may cross the international date line (-180 longitude) if {@link #getCrossesDateLine()} however it cannot pass the polesalthough it may span the globe. It spans the globe if the X coordinate (Longitude) goes from -180 to 180 as seen from {@link #getMinX()} and {@link #getMaxX()}.

    }
  }


  public GeohashPrefixTree(SpatialContext ctx, int maxLevels) {
    super(ctx, maxLevels);
    Rectangle bounds = ctx.getWorldBounds();
    if (bounds.getMinX() != -180)
      throw new IllegalArgumentException("Geohash only supports lat-lon world bounds. Got "+bounds);
    int MAXP = getMaxLevelsPossible();
    if (maxLevels <= 0 || maxLevels > MAXP)
      throw new IllegalArgumentException("maxLen must be [1-"+MAXP+"] but got "+ maxLevels);
  }

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      throw new IllegalArgumentException("distErrPct " + distErrPct + " must be between [0 to 0.5]");
    }
    if (distErrPct == 0 || shape instanceof Point) {
      return 0;
    }
    Rectangle bbox = shape.getBoundingBox();
    //Compute the distance from the center to a corner.  Because the distance
    // to a bottom corner vs a top corner can vary in a geospatial scenario,
    // take the closest one (greater precision).
    Point ctr = bbox.getCenter();
    double y = (ctr.getY() >= 0 ? bbox.getMaxY() : bbox.getMinY());
    double diagonalDist = ctx.getDistCalc().distance(ctr, bbox.getMaxX(), y);
    return diagonalDist * distErrPct;
  }

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        SpatialOperation.Intersects,
        SpatialOperation.IsWithin ))
      throw new UnsupportedSpatialOperation(args.getOperation());
    Shape shape = args.getShape();
    if (shape instanceof Rectangle) {
      Rectangle bbox = (Rectangle) shape;
      return new ConstantScoreQuery(makeWithin(bbox));
    } else if (shape instanceof Circle) {
      Circle circle = (Circle)shape;
      Rectangle bbox = circle.getBoundingBox();
      ValueSourceFilter vsf = new ValueSourceFilter(
          new QueryWrapperFilter(makeWithin(bbox)),
          makeDistanceValueSource(circle.getCenter()),
          0,
          circle.getRadius() );

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    if (!(shape instanceof Rectangle || shape instanceof Circle)) {
      throw new UnsupportedOperationException("Only Rectangles and Circles are currently supported, " +
          "found [" + shape.getClass() + "]");//TODO
    }


    Rectangle bbox = shape.getBoundingBox();


    if (bbox.getCrossesDateLine()) {
      throw new UnsupportedOperationException( "Crossing dateline not yet supported" );
    }


    ValueSource valueSource = null;

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      double newDist = circle.getRadius() + distErr;
      if (ctx.isGeo() && newDist > 180)
        newDist = 180;
      return ctx.makeCircle(circle.getCenter(), newDist);
    } else {
      Rectangle bbox = shape.getBoundingBox();
      double newMinX = bbox.getMinX() - distErr;
      double newMaxX = bbox.getMaxX() + distErr;
      double newMinY = bbox.getMinY() - distErr;
      double newMaxY = bbox.getMaxY() + distErr;
      if (ctx.isGeo()) {
        if (newMinY < -90)
          newMinY = -90;
        if (newMaxY > 90)
          newMaxY = 90;
        if (newMinY == -90 || newMaxY == 90 || bbox.getWidth() + 2*distErr > 360) {
          newMinX = -180;
          newMaxX = 180;
        } else {
          newMinX = DistanceUtils.normLonDEG(newMinX);
          newMaxX = DistanceUtils.normLonDEG(newMaxX);

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    // In these two tests, we give the same set of points, one that does not cross the dateline, and the 2nd does. The
    // order is counter-clockwise in both cases as it should be.


    Shape sNoDL = ctx.readShape("Polygon((-170 30, -170 15,  160 15,  160 30, -170 30))");
    Rectangle expectedNoDL = ctx.makeRectangle(-170, 160, 15, 30);
    assertTrue(!expectedNoDL.getCrossesDateLine());
    assertEquals(expectedNoDL,sNoDL);


    Shape sYesDL = ctx.readShape("Polygon(( 160 30,  160 15, -170 15, -170 30,  160 30))");
    Rectangle expectedYesDL = ctx.makeRectangle(160, -170, 15, 30);
    assertTrue(expectedYesDL.getCrossesDateLine());
    assertEquals(expectedYesDL,sYesDL);


  }

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  }


  @Test
  public void polyToRect180Rule() throws ParseException {
    //crosses dateline
    Rectangle expected = ctx.makeRectangle(160, -170, 0, 10);
    //counter-clockwise
    assertParses("POLYGON((160 0, -170 0, -170 10, 160 10, 160 0))", expected);
    //clockwise
    assertParses("POLYGON((160 10, -170 10, -170 0, 160 0, 160 10))", expected);
  }

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    assertParses("MULTIPOINT Z EMPTY", ctx.makeCollection(Collections.EMPTY_LIST));
  }


  @Test
  public void testParseEnvelope() throws ParseException {
    Rectangle r = ctx.makeRectangle(ctx.makePoint(10, 25), ctx.makePoint(30, 45));
    assertParses(" ENVELOPE ( 10 , 30 , 45 , 25 ) ", r);
    assertParses("ENVELOPE(10,30,45,25) ", r);
    assertFails("ENVELOPE (10 30 45 25)");
  }

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      double d = 6894.1 * KM_TO_DEG;
      Point pCtr = pLL(-20, 84);
      Point pTgt = pLL(-42, 15);
      assertTrue(dc().distance(pCtr, pTgt) < d);
      //since the pairwise distance is less than d, a bounding box from ctr with d should contain pTgt.
      Rectangle r = dc().calcBoxByDistFromPt(pCtr, d, ctx, null);
      assertEquals(SpatialRelation.CONTAINS,r.relate(pTgt));
      checkBBox(pCtr,d);
    }


    assertEquals("0 dist, horiz line",
        -45,dc().calcBoxByDistFromPt_yHorizAxisDEG(ctx.makePoint(-180, -45), 0, ctx),0);

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  private void checkBBox(Point ctr, double distKm) {
    String msg = "ctr: "+ctr+" distKm: "+distKm;
    double dist = distKm * KM_TO_DEG;


    Rectangle r = dc().calcBoxByDistFromPt(ctr, dist, ctx, null);
    double horizAxisLat = dc().calcBoxByDistFromPt_yHorizAxisDEG(ctr, dist, ctx);
    if (!Double.isNaN(horizAxisLat))
      assertTrue(r.relateYRange(horizAxisLat, horizAxisLat).intersects());


    //horizontal
    if (r.getWidth() >= 180) {
      double deg = dc().distance(ctr, r.getMinX(), r.getMaxY() == 90 ? 90 : -90);
      double calcDistKm = deg * DEG_TO_KM;
      assertTrue(msg, calcDistKm <= distKm + EPS);
      //horizAxisLat is meaningless in this context
    } else {
      Point tPt = findClosestPointOnVertToPoint(r.getMinX(), r.getMinY(), r.getMaxY(), ctr);
      double calcDistKm = dc().distance(ctr, tPt) * DEG_TO_KM;
      assertEquals(msg, distKm, calcDistKm, EPS);
      assertEquals(msg, tPt.getY(), horizAxisLat, EPS);
    }


    //vertical
    double topDistKm = dc().distance(ctr, ctr.getX(), r.getMaxY()) * DEG_TO_KM;
    if (r.getMaxY() == 90)
      assertTrue(msg, topDistKm <= distKm + EPS);
    else
      assertEquals(msg, distKm, topDistKm, EPS);
    double botDistKm = dc().distance(ctr, ctr.getX(), r.getMinY()) * DEG_TO_KM;
    if (r.getMinY() == -90)
      assertTrue(msg, botDistKm <= distKm + EPS);
    else
      assertEquals(msg, distKm, botDistKm, EPS);
  }

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