/*
* (non-Javadoc)
*
* @see com.iver.cit.gvsig.gui.cad.snapping.ISnapper#getSnapPoint(Point2D
* point, IGeometry geom,double tolerance, Point2D lastPointEntered)
*/
public Point2D getSnapPoint(
Point2D point, IGeometry geom, double tolerance, Point2D lastPointEntered) {
if (geom.getInternalShape() instanceof FCircle2D
|| geom.getInternalShape() instanceof FArc2D
|| geom.getInternalShape() instanceof FEllipse2D
|| geom.getInternalShape() instanceof FSpline2D) {
return null;
}
Point2D resul = null;
Coordinate c = new Coordinate(point.getX(), point.getY());
PathIterator theIterator =
geom.getPathIterator(null, FConverter.FLATNESS); // polyLine.getPathIterator(null,
// flatness);
double[] theData = new double[6];
double minDist = tolerance;
Coordinate from = null;
Coordinate first = null;
while (!theIterator.isDone()) {
// while not done
int theType = theIterator.currentSegment(theData);
switch (theType) {
case PathIterator.SEG_MOVETO:
from = new Coordinate(theData[0], theData[1]);
first = from;
break;
case PathIterator.SEG_LINETO:
Coordinate to = new Coordinate(theData[0], theData[1]);
Coordinate mediumPoint = new Coordinate((to.x + from.x) / 2, (to.y + from.y) / 2);
double dist = c.distance(mediumPoint);
if ((dist < minDist)) {
resul = new Point2D.Double(mediumPoint.x, mediumPoint.y);
minDist = dist;
}
from = to;
break;
case PathIterator.SEG_CLOSE:
mediumPoint = new Coordinate((first.x + from.x) / 2, (first.y + from.y) / 2);
dist = c.distance(mediumPoint);
if ((dist < minDist)) {
resul = new Point2D.Double(mediumPoint.x, mediumPoint.y);
minDist = dist;
}
from = first;
break;
} // end switch
theIterator.next();
}
return resul;
}
/*
* (non-Javadoc)
*
* @see com.iver.cit.gvsig.gui.cad.snapping.ISnapper#getSnapPoint(Point2D
* point, IGeometry geom,double tolerance, Point2D lastPointEntered)
*/
public Point2D getSnapPoint(
Point2D point, IGeometry geom, double tolerance, Point2D lastPointEntered) {
Point2D resul = null;
Coordinate c = new Coordinate(point.getX(), point.getY());
if (lastPointEntered == null) {
return null;
}
Coordinate cLastPoint = new Coordinate(lastPointEntered.getX(), lastPointEntered.getY());
PathIterator theIterator =
geom.getPathIterator(null, FConverter.FLATNESS); // polyLine.getPathIterator(null,
// flatness);
double[] theData = new double[6];
double minDist = tolerance;
Coordinate from = null;
Coordinate first = null;
while (!theIterator.isDone()) {
// while not done
int theType = theIterator.currentSegment(theData);
switch (theType) {
case PathIterator.SEG_MOVETO:
from = new Coordinate(theData[0], theData[1]);
first = from;
break;
case PathIterator.SEG_LINETO:
// System.out.println("SEG_LINETO");
Coordinate to = new Coordinate(theData[0], theData[1]);
LineSegment line = new LineSegment(from, to);
Coordinate closestPoint = line.closestPoint(cLastPoint);
double dist = c.distance(closestPoint);
if (!(line.getCoordinate(0).equals2D(closestPoint)
|| line.getCoordinate(1).equals2D(closestPoint))) {
if ((dist < minDist)) {
resul = new Point2D.Double(closestPoint.x, closestPoint.y);
minDist = dist;
}
}
from = to;
break;
case PathIterator.SEG_CLOSE:
line = new LineSegment(from, first);
closestPoint = line.closestPoint(cLastPoint);
dist = c.distance(closestPoint);
if (!(line.getCoordinate(0).equals2D(closestPoint)
|| line.getCoordinate(1).equals2D(closestPoint))) {
if ((dist < minDist)) {
resul = new Point2D.Double(closestPoint.x, closestPoint.y);
minDist = dist;
}
}
from = first;
break;
} // end switch
theIterator.next();
}
return resul;
}