// p0 and p1 have to be on left/right boundary of fullRange2D (since this
// fuction can be called recursively, p0 or p1 can also be fullRange2D
// corners)
internal static int AddPointsToArray(com.epl.geometry.Point2D p0In, com.epl.geometry.Point2D p1In, com.epl.geometry.Point2D[] pointsArray, int idx, com.epl.geometry.Envelope2D fullRange2D, bool clockwise, double densifyDist)
{
// PointerOfArrayOf(Point2D)
// pointsArray, int idx,
// Envelope2D fullRange2D,
// boolean clockwise, double
// densifyDist)
com.epl.geometry.Point2D p0 = new com.epl.geometry.Point2D();
p0.SetCoords(p0In);
com.epl.geometry.Point2D p1 = new com.epl.geometry.Point2D();
p1.SetCoords(p1In);
fullRange2D._snapToBoundary(p0);
fullRange2D._snapToBoundary(p1);
// //_ASSERT((p0.x == fullRange2D.xmin || p0.x == fullRange2D.xmax) &&
// (p1.x == fullRange2D.xmin || p1.x == fullRange2D.xmax));
double boundDist0 = fullRange2D._boundaryDistance(p0);
double boundDist1 = fullRange2D._boundaryDistance(p1);
if (boundDist1 == 0.0)
{
boundDist1 = fullRange2D.GetLength();
}
if ((p0.x == p1.x || p0.y == p1.y && (p0.y == fullRange2D.ymin || p0.y == fullRange2D.ymax)) && (boundDist1 > boundDist0) == clockwise)
{
com.epl.geometry.Point2D delta = new com.epl.geometry.Point2D();
delta.SetCoords(p1.x - p0.x, p1.y - p0.y);
if (densifyDist != 0)
{
// if (densifyDist)
long cPoints = (long)(delta._norm(0) / densifyDist);
if (cPoints > 0)
{
// if (cPoints)
delta.Scale(1.0 / (cPoints + 1));
for (long i = 0; i < cPoints; i++)
{
p0.Add(delta);
pointsArray[idx++].SetCoords(p0.x, p0.y);
}
}
}
}
else
{
// ARRAYELEMENT(pointsArray,
// idx++).setCoords(p0.x,
// p0.y);
int side0 = fullRange2D._envelopeSide(p0);
int side1 = fullRange2D._envelopeSide(p1);
// create up to four corner points; the order depends on boolean
// clockwise
com.epl.geometry.Point2D corner;
int deltaSide = clockwise ? 1 : 3;
do
{
// 3 is equivalent to -1
side0 = (side0 + deltaSide) & 3;
corner = fullRange2D.QueryCorner(side0);
if (densifyDist != 0)
{
// if (densifyDist)
idx = AddPointsToArray(p0, corner, pointsArray, idx, fullRange2D, clockwise, densifyDist);
}
pointsArray[idx++].SetCoords(corner.x, corner.y);
// ARRAYELEMENT(pointsArray,
// idx++).setCoords(corner.x,
// corner.y);
p0 = corner;
}while ((side0 & 3) != side1);
if (densifyDist != 0)
{
// if (densifyDist)
idx = AddPointsToArray(p0, p1, pointsArray, idx, fullRange2D, clockwise, densifyDist);
}
}
return(idx);
}