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fix a bug in generalize for large deviations #99

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Merged
stolstov merged 3 commits into from
Dec 29, 2015
Merged

fix a bug in generalize for large deviations #99

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6c3d595
fix a bug in generalize for large deviations
stolstov Dec 18, 2015
e7b03a9
make sure to leave degenerate rings when requested
stolstov Dec 28, 2015
ce99bc5
added a test for generalize case
stolstov Dec 28, 2015
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fix a bug in generalize for large deviations
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@stolstov
stolstov committed Dec 18, 2015
commit 6c3d5955ac99dff5e39adedce49b32414f8b8fba
6 changes: 3 additions & 3 deletions src/main/java/com/esri/core/geometry/OperatorGeneralizeCursor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -64,8 +64,6 @@ private Geometry Generalize(Geometry geom) {
if (geom.isEmpty())
return geom;
MultiPath mp = (MultiPath) geom;
if (mp == null)
throw GeometryException.GeometryInternalError();
MultiPath dstmp = (MultiPath) geom.createInstance();
Line line = new Line();
for (int ipath = 0, npath = mp.getPathCount(); ipath < npath; ipath++) {
Expand Down Expand Up @@ -113,7 +111,9 @@ private void GeneralizePath(MultiPathImpl mpsrc, int ipath,
if (!bClosed)
resultStack.add(stack.get(0));

if (resultStack.size() == stack.size()) {
int rs_size = resultStack.size();
int path_size = mpsrc.getPathSize(ipath);
if (rs_size == path_size && rs_size == stack.size()) {
mpdst.addPath(mpsrc, ipath, true);
} else {
if (resultStack.size() >= 2) {
Expand Down
21 changes: 21 additions & 0 deletions src/test/java/com/esri/core/geometry/TestGeneralize.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package com.esri.core.geometry;

import junit.framework.TestCase;

import org.junit.Test;

public class TestGeneralize extends TestCase {
Expand Down Expand Up @@ -90,4 +91,24 @@ public static void test2() {
assertTrue(points[0].x == 0 && points[0].y == 0);
assertTrue(points[1].x == 0 && points[1].y == 10);
}

@Test
public static void testLargeDeviation() {
{
Polygon input_polygon = new Polygon();
input_polygon
.addEnvelope(Envelope2D.construct(0, 0, 20, 10), false);
Geometry densified_geom = OperatorDensifyByLength.local().execute(
input_polygon, 1, null);
Geometry geom = OperatorGeneralize.local().execute(densified_geom,
1, true, null);
int pc = ((MultiPath) geom).getPointCount();
assertTrue(pc == 4);

Geometry large_dev = OperatorGeneralize.local().execute(
densified_geom, 40, true, null);
int pc1 = ((MultiPath) large_dev).getPointCount();
assertTrue(pc1 == 0);
}
}
}