/**
* Get an OMText label for a segments between the given lat/lon points whose given distance and
* cumulative distance is specified.
*/
public OMText createLabel(
Geo g1, Geo g2, double dist, double cumulativeDist, Length distanceUnits) {
Geo mid;
switch (getLineType()) {
case LINETYPE_STRAIGHT:
double lat = (g1.getLatitude() + g2.getLatitude()) / 2.0;
double lon = (g1.getLongitude() + g2.getLongitude()) / 2.0;
mid = new Geo(lat, lon);
break;
case LINETYPE_RHUMB:
System.err.println("Rhumb distance calculation not implemented.");
case LINETYPE_GREATCIRCLE:
case LINETYPE_UNKNOWN:
default:
mid = g1.midPoint(g2);
}
// String text = ((int)dist) + " (" + ((int)cumulativeDist) +
// ")";
String text =
(df.format(distanceUnits.fromRadians(dist)))
+ " ("
+ (df.format(distanceUnits.fromRadians(cumulativeDist)))
+ ") "
+ distanceUnits.getAbbr();
OMText omtext = new OMText(mid.getLatitude(), mid.getLongitude(), text, OMText.JUSTIFY_LEFT);
// omtext.setLinePaint(new Color(200, 200, 255));
return omtext;
}
public void createLabels() {
labels.clear();
points.clear();
if (rawllpts == null) {
return;
}
if (rawllpts.length < 4) {
return;
}
Geo lastGeo = new Geo(rawllpts[0], rawllpts[1], units == DECIMAL_DEGREES);
double latpnt = rawllpts[0];
double lonpnt = rawllpts[1];
if (units == RADIANS) {
latpnt = ProjMath.radToDeg(latpnt);
lonpnt = ProjMath.radToDeg(lonpnt);
}
points.add(new OMPoint(latpnt, lonpnt, 1));
Geo curGeo = null;
double cumulativeDist = 0.0;
for (int p = 2; p < rawllpts.length; p += 2) {
if (curGeo == null) {
curGeo = new Geo(rawllpts[p], rawllpts[p + 1], units == DECIMAL_DEGREES);
} else {
if (units == DECIMAL_DEGREES) {
curGeo.initialize(rawllpts[p], rawllpts[p + 1]);
} else {
curGeo.initializeRadians(rawllpts[p], rawllpts[p + 1]);
}
}
double dist = getDist(lastGeo, curGeo);
cumulativeDist += dist;
labels.add(createLabel(lastGeo, curGeo, dist, cumulativeDist, distUnits));
latpnt = rawllpts[p];
lonpnt = rawllpts[p + 1];
if (units == RADIANS) {
latpnt = ProjMath.radToDeg(latpnt);
lonpnt = ProjMath.radToDeg(lonpnt);
}
points.add(new OMPoint(latpnt, lonpnt, 1));
lastGeo.initialize(curGeo);
}
}
/**
* Return the distance between that lat/lons defined in radians. The returned value is in radians
* and LINETYPE is taken into consideration. LINETYPE_STRAIGHT returns same as
* LINETYPE_GREATCIRCLE, the ground distance between all nodes and not the degree distance of the
* lines.
*/
public double getDist(Geo g1, Geo g2) {
switch (getLineType()) {
case LINETYPE_RHUMB:
double[] coords =
new double[] {
g1.getLatitudeRadians(),
g1.getLongitudeRadians(),
g2.getLatitudeRadians(),
g2.getLongitudeRadians()
};
return ProjMath.distance(LineCoordinateGenerator.fromRadians(coords).rhumbLineDoubles());
case LINETYPE_STRAIGHT:
case LINETYPE_GREATCIRCLE:
case LINETYPE_UNKNOWN:
default:
return g1.distance(g2);
}
}
private Position findIntersectionBottom(Position newPos) {
// The mouse can be in 4 different areas
int lengthMax = 500000;
double bearing = C.rhumbLineBearingTo(newPos);
System.out.println("Vertical bearing " + verticalBearing);
System.out.println("Horizontal bearing " + horizontalBearing);
Geo intersectionPoint = null;
if (bearing >= 0 && bearing <= 180) {
// if (bearing > 90 && bearing < 180){
// Create a line going from C, in reverse vertical direction eg up
Position verticalEndPosition = Calculator.findPosition(A, verticalBearing, lengthMax);
Geo a1 = new Geo(A.getLatitude(), A.getLongitude());
Geo a2 = new Geo(verticalEndPosition.getLatitude(), verticalEndPosition.getLongitude());
// Create a line going from newPos in reverse horizontal direction
// eg left
Position horizontalEndPosition =
Calculator.findPosition(
newPos, Calculator.reverseDirection(horizontalBearing), lengthMax);
Geo b1 = new Geo(newPos.getLatitude(), newPos.getLongitude());
Geo b2 = new Geo(horizontalEndPosition.getLatitude(), horizontalEndPosition.getLongitude());
intersectionPoint = Intersection.segmentsIntersect(a1, a2, b1, b2);
}
if (bearing > 180) {
// Create a line going from C, in reverse vertical direction eg up
Position verticalEndPosition = Calculator.findPosition(C, verticalBearing, lengthMax);
Geo a1 = new Geo(C.getLatitude(), C.getLongitude());
Geo a2 = new Geo(verticalEndPosition.getLatitude(), verticalEndPosition.getLongitude());
// Create a line going from newPos in horizontal direction eg right
Position horizontalEndPosition =
Calculator.findPosition(newPos, horizontalBearing, lengthMax);
Geo b1 = new Geo(newPos.getLatitude(), newPos.getLongitude());
Geo b2 = new Geo(horizontalEndPosition.getLatitude(), horizontalEndPosition.getLongitude());
intersectionPoint = Intersection.segmentsIntersect(a1, a2, b1, b2);
}
if (intersectionPoint != null) {
newPos = Position.create(intersectionPoint.getLatitude(), intersectionPoint.getLongitude());
return newPos;
} else {
System.out.println("something went bad... for mouse bearing " + bearing);
return null;
}
}
