本文整理汇总了Java中gov.nasa.worldwind.geom.Position.getAltitude方法的典型用法代码示例。如果您正苦于以下问题:Java Position.getAltitude方法的具体用法?Java Position.getAltitude怎么用?Java Position.getAltitude使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类gov.nasa.worldwind.geom.Position
的用法示例。
在下文中一共展示了Position.getAltitude方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: computeCenterPosition
import gov.nasa.worldwind.geom.Position; //导入方法依赖的package包/类
/**
* Compute a center position from an eye position and an orientation. If the view is looking at
* the earth, the center position is the intersection point of the globe and a ray beginning at
* the eye point, in the direction of the forward vector. If the view is looking at the horizon,
* the center position is the eye position. Otherwise, the center position is null.
*
* @param eyePosition
* The eye position.
* @param forward
* The forward vector.
* @param pitch
* View pitch.
* @param altitudeMode
* Altitude mode of {@code eyePosition}.
* @return The center position of the view.
*/
protected Position computeCenterPosition( final Position eyePosition,
final Vec4 forward,
final Angle pitch,
final int altitudeMode) {
double height;
final Angle latitude = eyePosition.getLatitude();
final Angle longitude = eyePosition.getLongitude();
final Globe globe = _wwCanvas.getModel().getGlobe();
if (altitudeMode == WorldWind.CLAMP_TO_GROUND) {
height = globe.getElevation(latitude, longitude);
} else if (altitudeMode == WorldWind.RELATIVE_TO_GROUND) {
height = globe.getElevation(latitude, longitude) + eyePosition.getAltitude();
} else {
height = eyePosition.getAltitude();
}
final Vec4 eyePoint = globe.computePointFromPosition(new Position(latitude, longitude, height));
// Find the intersection of the globe and the camera's forward vector. Looking at the horizon (tilt == 90)
// is a special case because it is a valid view, but the view vector does not intersect the globe.
Position lookAtPosition;
final double tolerance = 0.001;
if (Math.abs(pitch.degrees - 90.0) > tolerance) {
lookAtPosition = globe.getIntersectionPosition(new Line(eyePoint, forward));
} else {
lookAtPosition = globe.computePositionFromPoint(eyePoint);
}
return lookAtPosition;
}
示例2: findMaxAltitude
import gov.nasa.worldwind.geom.Position; //导入方法依赖的package包/类
/**
* Get the maximum altitude in a list of positions.
*
* @param positions
* List of positions to search for max altitude.
* @return The maximum elevation in the list of positions. Returns {@code Double.MIN_VALUE} if
* {@code positions} is empty.
*/
protected double findMaxAltitude(final List<? extends Position> positions) {
double maxAltitude = -Double.MAX_VALUE;
for (final Position p : positions) {
final double altitude = p.getAltitude();
if (altitude > maxAltitude) {
maxAltitude = altitude;
}
}
return maxAltitude;
}
示例3: computeArrowPositions
import gov.nasa.worldwind.geom.Position; //导入方法依赖的package包/类
private void computeArrowPositions(final DrawContext dc, final List<Position> positions, final PathData pathData) {
// System.out.println(UI.timeStampNano() + " [" + getClass().getSimpleName() + "] \tcomputeArrowPositions()");
// // TODO remove SYSTEM.OUT.PRINTLN
final int elemsPerPoint = 3;
final int positionSize = positions.size();
final int polePositionSize = (positionSize / SKIP_COUNTER) + 3;
final int numPoints = polePositionSize * 1;
final int bufferSize = elemsPerPoint * numPoints;
FloatBuffer arrowPositions = (FloatBuffer) pathData.getValue(ARROW_POSITION_KEY);
if (arrowPositions == null || arrowPositions.capacity() < bufferSize) {
arrowPositions = Buffers.newDirectFloatBuffer(bufferSize);
}
pathData.setValue(ARROW_POSITION_KEY, arrowPositions);
arrowPositions.clear();
if (_arrowPositionIndizes == null || _arrowPositionIndizes.size() < polePositionSize) {
_arrowPositionIndizes = new TIntArrayList(polePositionSize);
}
_arrowPositionIndizes.clear();
final Globe globe = dc.getGlobe();
final Vec4 referencePoint = pathData.getReferencePoint();
// vertical exaggeration
final double verticalExaggeration = dc.getVerticalExaggeration();
final TourTrackConfig config = TourTrackConfigManager.getActiveConfig();
final int altitudeMode = config.altitudeMode;
final double altitudeOffset = Map3View.getAltitudeOffset(dc.getView().getEyePosition());
final double poleHeight = pathData.getEyeDistance() / (100.0 / config.directionArrowDistance * 1.5);
// poleHeight *= verticalExaggeration;
for (int posIndex = 0; posIndex < positionSize; posIndex++) {
if (posIndex % SKIP_COUNTER == 0 || posIndex == 0 || posIndex == positionSize - 1) {
_arrowPositionIndizes.add(posIndex);
final Position geoPosition = positions.get(posIndex);
final double trackAltitude = (geoPosition.getAltitude() + altitudeOffset) * verticalExaggeration;
// create arrow position vertex
Vec4 pt;
if (altitudeMode == WorldWind.CLAMP_TO_GROUND) {
pt = dc.computeTerrainPoint(geoPosition.getLatitude(), geoPosition.getLongitude(), 0 + poleHeight);
} else if (altitudeMode == WorldWind.RELATIVE_TO_GROUND) {
pt = dc.computeTerrainPoint(//
geoPosition.getLatitude(),
geoPosition.getLongitude(),
trackAltitude + poleHeight);
} else { // WorldWind.ABSOLUTE
pt = globe.computePointFromPosition(//
geoPosition.getLatitude(),
geoPosition.getLongitude(),
trackAltitude + poleHeight);
}
putVertexIntoBuffer(arrowPositions, pt, referencePoint);
}
}
// since the buffer is reused the limit might not be the same as the previous usage
arrowPositions.flip();
}