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Test union operator with some geometry #165

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Mar 29, 2018
Merged

Test union operator with some geometry #165

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129 changes: 124 additions & 5 deletions src/test/java/com/esri/core/geometry/TestUnion.java
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Original file line number Diff line number Diff line change
Expand Up @@ -40,11 +40,6 @@ protected void tearDown() throws Exception {

@Test
public static void testUnion() {
Point pt = new Point(10, 20);

Point pt2 = new Point();
pt2.setXY(10, 10);

Envelope env1 = new Envelope(10, 10, 30, 50);
Envelope env2 = new Envelope(30, 10, 60, 50);
Geometry[] geomArray = new Geometry[] { env1, env2 };
Expand All @@ -57,5 +52,129 @@ public static void testUnion() {

GeometryCursor outputCursor = union.execute(inputGeometries, sr, null);
Geometry result = outputCursor.next();

MultiPath path = (MultiPath)result;
assertEquals(1, path.getPathCount());
assertEquals(6, path.getPathEnd(0));
assertEquals(new Point2D(10, 10), path.getXY(0));
assertEquals(new Point2D(10, 50), path.getXY(1));
assertEquals(new Point2D(30, 50), path.getXY(2));
assertEquals(new Point2D(60, 50), path.getXY(3));
assertEquals(new Point2D(60, 10), path.getXY(4));
assertEquals(new Point2D(30, 10), path.getXY(5));
}

@Test
public static void testUnionDistinctGeometries() {
Envelope env = new Envelope(1, 5, 3, 10);

Polygon polygon = new Polygon();
polygon.startPath(new Point(4, 3));
polygon.lineTo(new Point(7, 6));
polygon.lineTo(new Point(6, 8));
polygon.lineTo(new Point(4, 3));

Geometry[] geomArray = new Geometry[] { env, polygon };
SimpleGeometryCursor inputGeometries = new SimpleGeometryCursor(
geomArray);
OperatorUnion union = (OperatorUnion) OperatorFactoryLocal
.getInstance().getOperator(Operator.Type.Union);
SpatialReference sr = SpatialReference.create(4326);

GeometryCursor outputCursor = union.execute(inputGeometries, sr, null);
Geometry result = outputCursor.next();

MultiPath path = (MultiPath)result;
assertEquals(2, path.getPathCount());

assertEquals(3, path.getPathEnd(0));
assertEquals(7, path.getPathEnd(1));
// from polygon
assertEquals(new Point2D(4, 3), path.getXY(0));
assertEquals(new Point2D(6, 8), path.getXY(1));
assertEquals(new Point2D(7, 6), path.getXY(2));
// from envelope
assertEquals(new Point2D(1, 5), path.getXY(3));
assertEquals(new Point2D(1, 10), path.getXY(4));
assertEquals(new Point2D(3, 10), path.getXY(5));
assertEquals(new Point2D(3, 5), path.getXY(6));
}

@Test
public static void testUnionCoincidentPolygons() {
Polygon polygon1 = new Polygon();
polygon1.startPath(new Point(3, 2));
polygon1.lineTo(new Point(1, 2));
polygon1.lineTo(new Point(1, 4));
polygon1.lineTo(new Point(3, 4));
polygon1.lineTo(new Point(3, 2));

Polygon polygon2 = new Polygon();
polygon2.startPath(new Point(1, 2));
polygon2.lineTo(new Point(1, 4));
polygon2.lineTo(new Point(3, 4));
polygon2.lineTo(new Point(3, 2));
polygon2.lineTo(new Point(1, 2));

Geometry[] geomArray = new Geometry[] { polygon1, polygon2 };
SimpleGeometryCursor inputGeometries = new SimpleGeometryCursor(
geomArray);
OperatorUnion union = (OperatorUnion) OperatorFactoryLocal
.getInstance().getOperator(Operator.Type.Union);
SpatialReference sr = SpatialReference.create(4326);

GeometryCursor outputCursor = union.execute(inputGeometries, sr, null);
Geometry result = outputCursor.next();

MultiPath path = (MultiPath)result;
assertEquals(1, path.getPathCount());
assertEquals(4, path.getPathEnd(0));
assertEquals(new Point2D(1, 2), path.getXY(0));
assertEquals(new Point2D(1, 4), path.getXY(1));
assertEquals(new Point2D(3, 4), path.getXY(2));
assertEquals(new Point2D(3, 2), path.getXY(3));
}

@Test
public static void testUnionCoincidentPolygonsWithReverseWinding() {
// Input polygons have CCW winding, result is always CW
Polygon polygon1 = new Polygon();
polygon1.startPath(new Point(3, 2));
polygon1.lineTo(new Point(3, 4));
polygon1.lineTo(new Point(1, 4));
polygon1.lineTo(new Point(1, 2));
polygon1.lineTo(new Point(3, 2));

Polygon polygon2 = new Polygon();
polygon2.startPath(new Point(1, 2));
polygon2.lineTo(new Point(3, 2));
polygon2.lineTo(new Point(3, 4));
polygon2.lineTo(new Point(1, 4));
polygon2.lineTo(new Point(1, 2));

Polygon expectedPolygon = new Polygon();
expectedPolygon.startPath(new Point(1, 2));
expectedPolygon.lineTo(new Point(1, 4));
expectedPolygon.lineTo(new Point(3, 4));
expectedPolygon.lineTo(new Point(3, 2));
expectedPolygon.lineTo(new Point(1, 2));

Geometry[] geomArray = new Geometry[] { polygon1, polygon2 };
SimpleGeometryCursor inputGeometries = new SimpleGeometryCursor(
geomArray);
OperatorUnion union = (OperatorUnion) OperatorFactoryLocal
.getInstance().getOperator(Operator.Type.Union);
SpatialReference sr = SpatialReference.create(4326);

GeometryCursor outputCursor = union.execute(inputGeometries, sr, null);
Geometry result = outputCursor.next();

MultiPath path = (MultiPath)result;
assertEquals(1, path.getPathCount());
assertEquals(4, path.getPathEnd(0));
assertEquals(new Point2D(1, 2), path.getXY(0));
assertEquals(new Point2D(1, 4), path.getXY(1));
assertEquals(new Point2D(3, 4), path.getXY(2));
assertEquals(new Point2D(3, 2), path.getXY(3));
}
}