public static com.esri.core.geometry.QuadTree buildQuadTree(com.esri.core.geometry.MultiPath
multipath)
{
com.esri.core.geometry.Envelope2D extent = new com.esri.core.geometry.Envelope2D(
);
multipath.queryEnvelope2D(extent);
com.esri.core.geometry.QuadTree quadTree = new com.esri.core.geometry.QuadTree(extent
, 8);
int hint_index = -1;
com.esri.core.geometry.SegmentIterator seg_iter = multipath.querySegmentIterator(
);
while (seg_iter.nextPath())
{
while (seg_iter.hasNextSegment())
{
com.esri.core.geometry.Segment segment = seg_iter.nextSegment();
int index = seg_iter.getStartPointIndex();
com.esri.core.geometry.Envelope2D boundingbox = new com.esri.core.geometry.Envelope2D
();
segment.queryEnvelope2D(boundingbox);
hint_index = quadTree.insert(index, boundingbox, hint_index);
}
}
return(quadTree);
}
public static void testRandom()
{
int passcount = 10;
int figureSize = 100;
int figureSize2 = 100;
com.esri.core.geometry.Envelope extent1 = new com.esri.core.geometry.Envelope();
com.esri.core.geometry.Envelope extent2 = new com.esri.core.geometry.Envelope();
com.esri.core.geometry.Envelope extent3 = new com.esri.core.geometry.Envelope();
com.esri.core.geometry.Envelope extent4 = new com.esri.core.geometry.Envelope();
extent1.setCoords(-10000, 5000, 10000, 25000);
// red
extent2.setCoords(-10000, 2000, 10000, 8000);
// blue
extent3.setCoords(-10000, -8000, 10000, -2000);
// blue
extent4.setCoords(-10000, -25000, 10000, -5000);
// red
com.esri.core.geometry.RandomCoordinateGenerator generator1 = new com.esri.core.geometry.RandomCoordinateGenerator
(System.Math.max(figureSize, 10000), extent1, 0.001);
com.esri.core.geometry.RandomCoordinateGenerator generator2 = new com.esri.core.geometry.RandomCoordinateGenerator
(System.Math.max(figureSize, 10000), extent2, 0.001);
com.esri.core.geometry.RandomCoordinateGenerator generator3 = new com.esri.core.geometry.RandomCoordinateGenerator
(System.Math.max(figureSize, 10000), extent3, 0.001);
com.esri.core.geometry.RandomCoordinateGenerator generator4 = new com.esri.core.geometry.RandomCoordinateGenerator
(System.Math.max(figureSize, 10000), extent4, 0.001);
java.util.Random random = new java.util.Random(1982);
int rand_max = 511;
int qCount = 0;
int eCount = 0;
int bCount = 0;
for (int c = 0; c < passcount; c++)
{
com.esri.core.geometry.Polygon polyRed = new com.esri.core.geometry.Polygon();
com.esri.core.geometry.Polygon polyBlue = new com.esri.core.geometry.Polygon();
int r = figureSize;
if (r < 3)
{
continue;
}
com.esri.core.geometry.Point pt;
for (int j = 0; j < r; j++)
{
int rand = random.nextInt(rand_max);
bool bRandomNew = (r > 10) && ((1.0 * rand) / rand_max > 0.95);
pt = generator1.GetRandomCoord();
if (j == 0 || bRandomNew)
{
polyRed.startPath(pt);
}
else
{
polyRed.lineTo(pt);
}
}
for (int j_1 = 0; j_1 < r; j_1++)
{
int rand = random.nextInt(rand_max);
bool bRandomNew = (r > 10) && ((1.0 * rand) / rand_max > 0.95);
pt = generator4.GetRandomCoord();
if (j_1 == 0 || bRandomNew)
{
polyRed.startPath(pt);
}
else
{
polyRed.lineTo(pt);
}
}
r = figureSize2;
if (r < 3)
{
continue;
}
for (int j_2 = 0; j_2 < r; j_2++)
{
int rand = random.nextInt(rand_max);
bool bRandomNew = (r > 10) && ((1.0 * rand) / rand_max > 0.95);
pt = generator2.GetRandomCoord();
if (j_2 == 0 || bRandomNew)
{
polyBlue.startPath(pt);
}
else
{
polyBlue.lineTo(pt);
}
}
for (int j_3 = 0; j_3 < r; j_3++)
{
int rand = random.nextInt(rand_max);
bool bRandomNew = (r > 10) && ((1.0 * rand) / rand_max > 0.95);
pt = generator3.GetRandomCoord();
if (j_3 == 0 || bRandomNew)
{
polyBlue.startPath(pt);
}
else
{
polyBlue.lineTo(pt);
}
}
com.esri.core.geometry.Envelope2D env = new com.esri.core.geometry.Envelope2D();
// Quad_tree
com.esri.core.geometry.QuadTree quadTree = buildQuadTree(polyBlue);
com.esri.core.geometry.QuadTree.QuadTreeIterator iterator = quadTree.getIterator(
);
com.esri.core.geometry.SegmentIteratorImpl _segIterRed = ((com.esri.core.geometry.MultiPathImpl
)polyRed._getImpl()).querySegmentIterator();
while (_segIterRed.nextPath())
{
while (_segIterRed.hasNextSegment())
{
com.esri.core.geometry.Segment segmentRed = _segIterRed.nextSegment();
segmentRed.queryEnvelope2D(env);
iterator.resetIterator(env, 0.001);
while (iterator.next() != -1)
{
qCount++;
}
}
}
// Envelope_2D_intersector
System.Collections.Generic.List <com.esri.core.geometry.Envelope2D> envelopes_red =
new System.Collections.Generic.List <com.esri.core.geometry.Envelope2D>();
System.Collections.Generic.List <com.esri.core.geometry.Envelope2D> envelopes_blue
= new System.Collections.Generic.List <com.esri.core.geometry.Envelope2D>();
com.esri.core.geometry.SegmentIterator segIterRed = polyRed.querySegmentIterator(
);
while (segIterRed.nextPath())
{
while (segIterRed.hasNextSegment())
{
com.esri.core.geometry.Segment segment = segIterRed.nextSegment();
env = new com.esri.core.geometry.Envelope2D();
segment.queryEnvelope2D(env);
envelopes_red.add(env);
}
}
com.esri.core.geometry.SegmentIterator segIterBlue = polyBlue.querySegmentIterator
();
while (segIterBlue.nextPath())
{
while (segIterBlue.hasNextSegment())
{
com.esri.core.geometry.Segment segment = segIterBlue.nextSegment();
env = new com.esri.core.geometry.Envelope2D();
segment.queryEnvelope2D(env);
envelopes_blue.add(env);
}
}
com.esri.core.geometry.Envelope2DIntersectorImpl intersector = new com.esri.core.geometry.Envelope2DIntersectorImpl
();
intersector.setTolerance(0.001);
intersector.startRedConstruction();
for (int i = 0; i < envelopes_red.Count; i++)
{
intersector.addRedEnvelope(i, envelopes_red[i]);
}
intersector.endRedConstruction();
intersector.startBlueConstruction();
for (int i_1 = 0; i_1 < envelopes_blue.Count; i_1++)
{
intersector.addBlueEnvelope(i_1, envelopes_blue[i_1]);
}
intersector.endBlueConstruction();
while (intersector.next())
{
eCount++;
}
NUnit.Framework.Assert.IsTrue(qCount == eCount);
}
}