private void adjustDateLineCrossingPoints() {
      ArrayList<LatLon> corners = new ArrayList<LatLon>(Arrays.asList(sw, se, nw, ne));
      if (!LatLon.locationsCrossDateLine(corners)) return;

      double lonSign = 0;
      for (LatLon corner : corners) {
        if (Math.abs(corner.getLongitude().degrees) != 180)
          lonSign = Math.signum(corner.getLongitude().degrees);
      }

      if (lonSign == 0) return;

      if (Math.abs(sw.getLongitude().degrees) == 180
          && Math.signum(sw.getLongitude().degrees) != lonSign)
        sw = new Position(sw.getLatitude(), sw.getLongitude().multiply(-1), sw.getElevation());
      if (Math.abs(se.getLongitude().degrees) == 180
          && Math.signum(se.getLongitude().degrees) != lonSign)
        se = new Position(se.getLatitude(), se.getLongitude().multiply(-1), se.getElevation());
      if (Math.abs(nw.getLongitude().degrees) == 180
          && Math.signum(nw.getLongitude().degrees) != lonSign)
        nw = new Position(nw.getLatitude(), nw.getLongitude().multiply(-1), nw.getElevation());
      if (Math.abs(ne.getLongitude().degrees) == 180
          && Math.signum(ne.getLongitude().degrees) != lonSign)
        ne = new Position(ne.getLatitude(), ne.getLongitude().multiply(-1), ne.getElevation());
    }
  protected void movePolygon(Point previousMousePoint, Point mousePoint) {
    // Intersect a ray through each mouse point, with a geoid passing through the reference
    // elevation.
    // If either ray fails to intersect the geoid, then ignore this event. Use the difference
    // between the two
    // intersected positions to move the control point's location.

    View view = this.wwd.getView();
    Globe globe = this.wwd.getModel().getGlobe();

    Position refPos = this.polygon.getReferencePosition();
    if (refPos == null) return;

    Line ray = view.computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());
    Line previousRay =
        view.computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY());

    Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), ray);
    Vec4 previousVec =
        AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), previousRay);

    if (vec == null || previousVec == null) {
      return;
    }

    Position pos = globe.computePositionFromPoint(vec);
    Position previousPos = globe.computePositionFromPoint(previousVec);
    LatLon change = pos.subtract(previousPos);

    this.polygon.move(new Position(change.getLatitude(), change.getLongitude(), 0.0));
  }
  /**
   * Select the visible grid elements
   *
   * @param dc the current <code>DrawContext</code>.
   */
  protected void selectRenderables(DrawContext dc) {
    if (dc == null) {
      String message = Logging.getMessage("nullValue.DrawContextIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }
    Sector vs = dc.getVisibleSector();
    OrbitView view = (OrbitView) dc.getView();
    // Compute labels offset from view center
    Position centerPos = view.getCenterPosition();
    Double pixelSizeDegrees =
        Angle.fromRadians(
                view.computePixelSizeAtDistance(view.getZoom())
                    / dc.getGlobe().getEquatorialRadius())
            .degrees;
    Double labelOffsetDegrees = pixelSizeDegrees * view.getViewport().getWidth() / 4;
    Position labelPos =
        Position.fromDegrees(
            centerPos.getLatitude().degrees - labelOffsetDegrees,
            centerPos.getLongitude().degrees - labelOffsetDegrees,
            0);
    Double labelLatDegrees = labelPos.getLatitude().normalizedLatitude().degrees;
    labelLatDegrees = Math.min(Math.max(labelLatDegrees, -76), 78);
    labelPos =
        new Position(
            Angle.fromDegrees(labelLatDegrees), labelPos.getLongitude().normalizedLongitude(), 0);

    if (vs != null) {
      for (GridElement ge : this.gridElements) {
        if (ge.isInView(dc)) {
          if (ge.renderable instanceof GeographicText) {
            GeographicText gt = (GeographicText) ge.renderable;
            if (labelPos.getLatitude().degrees < 72
                || "*32*34*36*".indexOf("*" + gt.getText() + "*") == -1) {
              // Adjust label position according to eye position
              Position pos = gt.getPosition();
              if (ge.type.equals(GridElement.TYPE_LATITUDE_LABEL))
                pos =
                    Position.fromDegrees(
                        pos.getLatitude().degrees,
                        labelPos.getLongitude().degrees,
                        pos.getElevation());
              else if (ge.type.equals(GridElement.TYPE_LONGITUDE_LABEL))
                pos =
                    Position.fromDegrees(
                        labelPos.getLatitude().degrees,
                        pos.getLongitude().degrees,
                        pos.getElevation());

              gt.setPosition(pos);
            }
          }

          this.graticuleSupport.addRenderable(ge.renderable, GRATICULE_UTM);
        }
      }
      // System.out.println("Total elements: " + count + " visible sector: " + vs);
    }
  }
  protected void doMoveAirspaceLaterally(
      WorldWindow wwd, Airspace airspace, Point mousePoint, Point previousMousePoint) {
    // Intersect a ray throuh each mouse point, with a geoid passing through the reference
    // elevation. Since
    // most airspace control points follow a fixed altitude, this will track close to the intended
    // mouse position.
    // If either ray fails to intersect the geoid, then ignore this event. Use the difference
    // between the two
    // intersected positions to move the control point's location.

    if (!(airspace instanceof Movable)) {
      return;
    }

    Movable movable = (Movable) airspace;
    View view = wwd.getView();
    Globe globe = wwd.getModel().getGlobe();

    Position refPos = movable.getReferencePosition();
    if (refPos == null) return;

    // Convert the reference position into a cartesian point. This assumes that the reference
    // elevation is defined
    // by the airspace's lower altitude.
    Vec4 refPoint = null;
    if (airspace.isTerrainConforming()[LOWER_ALTITUDE])
      refPoint = wwd.getSceneController().getTerrain().getSurfacePoint(refPos);
    if (refPoint == null) refPoint = globe.computePointFromPosition(refPos);

    // Convert back to a position.
    refPos = globe.computePositionFromPoint(refPoint);

    Line ray = view.computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());
    Line previousRay =
        view.computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY());

    Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(wwd, refPos.getElevation(), ray);
    Vec4 previousVec = AirspaceEditorUtil.intersectGlobeAt(wwd, refPos.getElevation(), previousRay);

    if (vec == null || previousVec == null) {
      return;
    }

    Position pos = globe.computePositionFromPoint(vec);
    Position previousPos = globe.computePositionFromPoint(previousVec);
    LatLon change = pos.subtract(previousPos);

    movable.move(new Position(change.getLatitude(), change.getLongitude(), 0.0));

    this.fireAirspaceMoved(new AirspaceEditEvent(wwd, airspace, this));
  }
Esempio n. 5
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  protected void dragWholeShape(DragSelectEvent dragEvent, Movable dragObject) {
    View view = getWwd().getView();
    EllipsoidalGlobe globe = (EllipsoidalGlobe) getWwd().getModel().getGlobe();

    // Compute ref-point position in screen coordinates.
    Position refPos = dragObject.getReferencePosition();
    if (refPos == null) return;

    Vec4 refPoint = globe.computePointFromPosition(refPos);
    Vec4 screenRefPoint = view.project(refPoint);

    // Compute screen-coord delta since last event.
    int dx = dragEvent.getPickPoint().x - dragEvent.getPreviousPickPoint().x;
    int dy = dragEvent.getPickPoint().y - dragEvent.getPreviousPickPoint().y;

    // Find intersection of screen coord ref-point with globe.
    double x = screenRefPoint.x + dx;
    double y =
        dragEvent.getMouseEvent().getComponent().getSize().height - screenRefPoint.y + dy - 1;
    Line ray = view.computeRayFromScreenPoint(x, y);
    Intersection inters[] = globe.intersect(ray, refPos.getElevation());

    if (inters != null) {
      // Intersection with globe. Move reference point to the intersection point.
      Position p = globe.computePositionFromPoint(inters[0].getIntersectionPoint());
      dragObject.moveTo(p);
    }
  }
  protected Angle computePanAmount(
      Globe globe, OrbitView view, ScreenAnnotation control, double panStep) {
    // Compute last pick point distance relative to pan control center
    double size = control.getAttributes().getSize().width * control.getAttributes().getScale();
    Vec4 center = new Vec4(control.getScreenPoint().x, control.getScreenPoint().y + size / 2, 0);
    double px = lastPickPoint.x - center.x;
    double py = view.getViewport().getHeight() - lastPickPoint.y - center.y;
    double pickDistance = Math.sqrt(px * px + py * py);
    double pickDistanceFactor = Math.min(pickDistance / 10, 5);

    // Compute globe angular distance depending on eye altitude
    Position eyePos = view.getEyePosition();
    double radius = globe.getRadiusAt(eyePos);
    double minValue = 0.5 * (180.0 / (Math.PI * radius)); // Minimum change ~0.5 meters
    double maxValue = 1.0; // Maximum change ~1 degree

    // Compute an interpolated value between minValue and maxValue, using (eye altitude)/(globe
    // radius) as
    // the interpolant. Interpolation is performed on an exponential curve, to keep the value from
    // increasing too quickly as eye altitude increases.
    double a = eyePos.getElevation() / radius;
    a = (a < 0 ? 0 : (a > 1 ? 1 : a));
    double expBase = 2.0; // Exponential curve parameter.
    double value =
        minValue + (maxValue - minValue) * ((Math.pow(expBase, a) - 1.0) / (expBase - 1.0));

    return Angle.fromDegrees(value * pickDistanceFactor * panStep);
  }
Esempio n. 7
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  protected void setDepthFunc(DrawContext dc, OrderedIcon uIcon, Vec4 screenPoint) {
    GL gl = dc.getGL();

    if (uIcon.icon.isAlwaysOnTop()) {
      gl.glDepthFunc(GL.GL_ALWAYS);
      return;
    }

    Position eyePos = dc.getView().getEyePosition();
    if (eyePos == null) {
      gl.glDepthFunc(GL.GL_ALWAYS);
      return;
    }

    double altitude = eyePos.getElevation();
    if (altitude < (dc.getGlobe().getMaxElevation() * dc.getVerticalExaggeration())) {
      double depth = screenPoint.z - (8d * 0.00048875809d);
      depth = depth < 0d ? 0d : (depth > 1d ? 1d : depth);
      gl.glDepthFunc(GL.GL_LESS);
      gl.glDepthRange(depth, depth);
    } else if (uIcon.eyeDistance > uIcon.horizonDistance) {
      gl.glDepthFunc(GL.GL_EQUAL);
      gl.glDepthRange(1d, 1d);
    } else {
      gl.glDepthFunc(GL.GL_ALWAYS);
    }
  }
  protected void setEyePosition(
      AnimationController animControl,
      View view,
      Position position,
      ViewInputAttributes.ActionAttributes attrib) {

    MoveToPositionAnimator posAnimator =
        (MoveToPositionAnimator) animControl.get(VIEW_ANIM_POSITION);

    double smoothing = attrib.getSmoothingValue();
    if (!(attrib.isEnableSmoothing() && this.isEnableSmoothing())) smoothing = 0.0;

    if (smoothing != 0.0) {

      double elevation =
          ((FlyViewLimits) view.getViewPropertyLimits())
              .limitEyeElevation(position, view.getGlobe());
      if (elevation != position.getElevation()) {
        position = new Position(position, elevation);
      }
      if (posAnimator == null) {
        posAnimator =
            new MoveToPositionAnimator(
                view.getEyePosition(),
                position,
                smoothing,
                OrbitViewPropertyAccessor.createEyePositionAccessor(view));
        animControl.put(VIEW_ANIM_POSITION, posAnimator);
      } else {
        posAnimator.setEnd(position);
        posAnimator.start();
      }
    }
    view.firePropertyChange(AVKey.VIEW, null, view);
  }
  public void goTo(Position lookAtPos, double distance) {

    Globe globe = this.getView().getGlobe();
    BasicFlyView view = (BasicFlyView) this.getView();

    Position lookFromPos =
        new Position(
            lookAtPos,
            globe.getElevation(lookAtPos.getLatitude(), lookAtPos.getLongitude()) + distance);

    // TODO: scale on mid-altitude?
    final long MIN_LENGTH_MILLIS = 4000;
    final long MAX_LENGTH_MILLIS = 16000;
    long timeToMove =
        AnimationSupport.getScaledTimeMillisecs(
            view.getEyePosition(), lookFromPos, MIN_LENGTH_MILLIS, MAX_LENGTH_MILLIS);
    FlyToFlyViewAnimator panAnimator =
        FlyToFlyViewAnimator.createFlyToFlyViewAnimator(
            view,
            view.getEyePosition(),
            lookFromPos,
            view.getHeading(),
            Angle.ZERO,
            view.getPitch(),
            Angle.ZERO,
            view.getEyePosition().getElevation(),
            lookFromPos.getElevation(),
            timeToMove,
            WorldWind.ABSOLUTE);

    this.gotoAnimControl.put(VIEW_ANIM_PAN, panAnimator);

    this.getView().firePropertyChange(AVKey.VIEW, null, this.getView());
  }
Esempio n. 10
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  /**
   * Sets the vector element at the specified position, as a geographic Position. This buffer's
   * logical vector size must be at least 2.
   *
   * @param position the logical vector position.
   * @param p the geographic Position to set.
   * @throws IllegalArgumentException if the position is out of range, if the Position is null, or
   *     if this buffer cannot store a Position.
   */
  public void putPosition(int position, Position p) {
    if (position < 0 || position >= this.getSize()) {
      String message =
          Logging.getMessage("generic.ArgumentOutOfRange", "position < 0 or position >= size");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }

    if (p == null) {
      String message = Logging.getMessage("nullValue.PositionIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }

    if (this.coordsPerVec < 2) {
      String message = Logging.getMessage("generic.BufferIncompatible", this);
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }

    double[] compArray = new double[3];
    compArray[1] = p.getLatitude().degrees;
    compArray[0] = p.getLongitude().degrees;
    compArray[2] = p.getElevation();

    this.put(position, compArray);
  }
Esempio n. 11
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  private void applyModify() {
    layer.setName(layerNameTextField.getText());
    Color choosenColor = colorBtn.getBackground();
    color = new Color(choosenColor.getRed(), choosenColor.getGreen(), choosenColor.getBlue());
    List<Position> positions = new ArrayList<Position>();
    for (int i = 0; i < latTexts.size(); i++) {
      Position p = layer.getPositions().get(i);
      double lat = Double.valueOf(latTexts.get(i).getText());
      double lng = Double.valueOf(lngTexts.get(i).getText());
      Position newP =
          new Position(Angle.fromDegrees(lat), Angle.fromDegrees(lng), p.getElevation());
      positions.add(newP);
    }
    layer.setPositions(positions);
    path.setPositions(positions);

    // Create and set an attribute bundle.
    ShapeAttributes attrs = new BasicShapeAttributes();
    Material material = new Material(color);
    attrs.setOutlineMaterial(material);
    attrs.setOutlineWidth(Double.valueOf(sizeTextField.getText()));
    attrs.setOutlineOpacity(Double.valueOf(opacityTextField.getText()));
    //		path.setColor(color);
    //		path.setLineWidth(Double.valueOf(sizeTextField.getText()));
    path.setAttributes(attrs);

    layer.refresh();
    frame.getLayerPanelDialog().getLayerPanel().update();
  }
Esempio n. 12
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  protected void setPolygonHeight(Point previousMousePoint, Point mousePoint) {
    // Find the closest points between the rays through each screen point, and the ray from the
    // control point
    // and in the direction of the globe's surface normal. Compute the elevation difference between
    // these two
    // points, and use that as the change in polygon height.

    Position referencePos = this.polygon.getReferencePosition();
    if (referencePos == null) return;

    Vec4 referencePoint = this.wwd.getModel().getGlobe().computePointFromPosition(referencePos);

    Vec4 surfaceNormal =
        this.wwd
            .getModel()
            .getGlobe()
            .computeSurfaceNormalAtLocation(
                referencePos.getLatitude(), referencePos.getLongitude());
    Line verticalRay = new Line(referencePoint, surfaceNormal);
    Line screenRay =
        this.wwd.getView().computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());
    Line previousScreenRay =
        this.wwd
            .getView()
            .computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY());

    Vec4 pointOnLine = AirspaceEditorUtil.nearestPointOnLine(verticalRay, screenRay);
    Vec4 previousPointOnLine =
        AirspaceEditorUtil.nearestPointOnLine(verticalRay, previousScreenRay);

    Position pos = this.wwd.getModel().getGlobe().computePositionFromPoint(pointOnLine);
    Position previousPos =
        this.wwd.getModel().getGlobe().computePositionFromPoint(previousPointOnLine);
    double elevationChange = pos.getElevation() - previousPos.getElevation();

    java.util.List<Position> boundary = new ArrayList<Position>();
    for (LatLon ll : this.polygon.getOuterBoundary()) {
      boundary.add(new Position(ll, ((Position) ll).getElevation() + elevationChange));
    }

    this.polygon.setOuterBoundary(boundary);
  }
 public void onSuccess(Position[] positions) {
   for (Position p : positions) {
     Logging.logger()
         .info(
             p.getLatitude().degrees
                 + ","
                 + p.getLongitude().degrees
                 + " --> "
                 + p.getElevation());
   }
 }
  protected static void writeReferencePositions(String filePath, ArrayList<Position> positions)
      throws FileNotFoundException {
    PrintStream os = new PrintStream(new File(filePath));

    for (Position pos : positions) {
      os.format(
          "%.5f %.5f %.4f\n",
          pos.getLatitude().degrees, pos.getLongitude().degrees, pos.getElevation());
    }

    os.flush();
  }
  protected static boolean isNameVisible(
      DrawContext dc, PlaceNameService service, Position namePosition) {
    double elevation = dc.getVerticalExaggeration() * namePosition.getElevation();
    Vec4 namePoint =
        dc.getGlobe()
            .computePointFromPosition(
                namePosition.getLatitude(), namePosition.getLongitude(), elevation);
    Vec4 eyeVec = dc.getView().getEyePoint();

    double dist = eyeVec.distanceTo3(namePoint);
    return dist >= service.getMinDisplayDistance() && dist <= service.getMaxDisplayDistance();
  }
Esempio n. 16
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  protected void moveControlPoint(
      ControlPointMarker controlPoint, Point lastMousePoint, Point moveToPoint) {
    View view = this.wwd.getView();
    Globe globe = this.wwd.getModel().getGlobe();

    Position refPos = controlPoint.getPosition();
    if (refPos == null) return;

    Line ray = view.computeRayFromScreenPoint(moveToPoint.getX(), moveToPoint.getY());
    Line previousRay = view.computeRayFromScreenPoint(lastMousePoint.getX(), lastMousePoint.getY());

    Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), ray);
    Vec4 previousVec =
        AirspaceEditorUtil.intersectGlobeAt(this.wwd, refPos.getElevation(), previousRay);

    if (vec == null || previousVec == null) {
      return;
    }

    Position pos = globe.computePositionFromPoint(vec);
    Position previousPos = globe.computePositionFromPoint(previousVec);
    LatLon change = pos.subtract(previousPos);

    java.util.List<LatLon> boundary = new ArrayList<LatLon>();
    for (LatLon ll : this.polygon.getOuterBoundary()) {
      boundary.add(ll);
    }

    boundary.set(controlPoint.getIndex(), new Position(pos.add(change), refPos.getAltitude()));

    // ExtrudedPolygon ensures that the last boundary position is the same as the first. Remove the
    // last point
    // before setting the boundary.
    boundary.remove(boundary.size() - 1);

    this.polygon.setOuterBoundary(boundary);
  }
Esempio n. 17
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  private static Position clampedCenter(Position unclampedCenter) {
    if (unclampedCenter == null) return null;

    // Clamp latitude to the range [-90, 90],
    // Normalize longitude to the range [-180, 180],
    // Don't change elevation.
    double lat = unclampedCenter.getLatitude().degrees;
    double lon = unclampedCenter.getLongitude().degrees;
    double elev = unclampedCenter.getElevation();
    lon = lon % 360;
    return Position.fromDegrees(
        lat > 90 ? 90 : (lat < -90 ? -90 : lat),
        lon > 180 ? lon - 360 : (lon < -180 ? 360 + lon : lon),
        elev);
  }
  protected void onVerticalTranslate(
      double translateChange,
      double totalTranslateChange,
      ViewInputAttributes.DeviceAttributes deviceAttributes,
      ViewInputAttributes.ActionAttributes actionAttribs) {
    this.stopGoToAnimators();
    double elevChange =
        -(totalTranslateChange * getScaleValueElevation(deviceAttributes, actionAttribs));
    View view = this.getView();
    Position position = view.getEyePosition();
    Position newPos = new Position(position, position.getElevation() + (elevChange));
    this.setEyePosition(uiAnimControl, view, newPos, actionAttribs);

    view.firePropertyChange(AVKey.VIEW, null, view);
  }
Esempio n. 19
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 /**
  * Compute the view range footprint on the globe.
  *
  * @param dc the current <code>DrawContext</code>
  * @param steps the number of steps.
  * @return an array list of <code>LatLon</code> forming a closed shape.
  */
 protected ArrayList<LatLon> computeViewFootPrint(DrawContext dc, int steps) {
   ArrayList<LatLon> positions = new ArrayList<LatLon>();
   Position eyePos = dc.getView().getEyePosition();
   Angle distance =
       Angle.fromRadians(
           Math.asin(
               dc.getView().getFarClipDistance()
                   / (dc.getGlobe().getRadius() + eyePos.getElevation())));
   if (distance.degrees > 10) {
     double headStep = 360d / steps;
     Angle heading = Angle.ZERO;
     for (int i = 0; i <= steps; i++) {
       LatLon p = LatLon.greatCircleEndPosition(eyePos, heading, distance);
       positions.add(p);
       heading = heading.addDegrees(headStep);
     }
     return positions;
   } else return null;
 }
Esempio n. 20
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  /**
   * Indicates whether the layer is active based on arbitrary criteria. The method implemented here
   * is a default indicating the layer is active if the current altitude is within the layer's min
   * and max active altitudes. Subclasses able to consider more criteria should override this
   * implementation.
   *
   * @param dc the current draw context
   * @return <code>true</code> if the layer is active, <code>false</code> otherwise.
   */
  public boolean isLayerActive(DrawContext dc) {
    if (dc == null) {
      String message = Logging.getMessage("nullValue.DrawContextIsNull");
      Logging.logger().severe(message);
      throw new IllegalStateException(message);
    }

    if (null == dc.getView()) {
      String message = Logging.getMessage("layers.AbstractLayer.NoViewSpecifiedInDrawingContext");
      Logging.logger().severe(message);
      throw new IllegalStateException(message);
    }

    Position eyePos = dc.getView().getEyePosition();
    if (eyePos == null) return false;

    double altitude = eyePos.getElevation();
    return altitude >= this.minActiveAltitude && altitude <= this.maxActiveAltitude;
  }
Esempio n. 21
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 @Override
 public void doRender(DrawContext dc) {
   Position eyePos = dc.getView().getEyePosition();
   if (eyePos == null) return;
   // View altitude
   float alt = (float) eyePos.getElevation();
   alt = alt < 100 ? 100 : alt; // Clamp altitudes below 100m
   // Start based on view altitude
   float start = alt * this.nearFactor;
   // End based on distance to horizon
   float end = (float) (dc.getView().getHorizonDistance() * this.farFactor);
   // Set GL fog
   GL2 gl = dc.getGL().getGL2();
   gl.glFogfv(GL2.GL_FOG_COLOR, fogColor, 0); // Set fog color
   gl.glFogi(GL2.GL_FOG_MODE, GL2.GL_LINEAR); // Set fog mode
   gl.glFogf(GL2.GL_FOG_START, start); // Set fog start distance
   gl.glFogf(GL2.GL_FOG_END, end); // Set fog end distance
   gl.glHint(GL2.GL_FOG_HINT, GL2.GL_DONT_CARE); // Set fog hint
   gl.glEnable(GL2.GL_FOG); // Enable fog
 }
Esempio n. 22
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  private Angle computeLatOrLonChange(double amount, boolean slow) {
    if (this.canvas == null
        || this.canvas.getModel() == null
        || this.canvas.getModel().getGlobe() == null
        || this.view == null
        || this.view.getEyePosition() == null) {
      return Angle.ZERO;
    }

    Position eyePos = this.view.getEyePosition();
    double normAlt =
        (eyePos.getElevation() / this.canvas.getModel().getGlobe().getRadiusAt(eyePos));
    if (normAlt < 0) normAlt = 0;
    else if (normAlt > 1) normAlt = 1;

    double coeff = (0.0001 * (1 - normAlt)) + (2 * normAlt);
    if (slow) coeff /= 4.0;

    return Angle.fromDegrees(coeff * amount);
  }
  protected void doMoveAirspaceVertically(
      WorldWindow wwd, Airspace airspace, Point mousePoint, Point previousMousePoint) {
    // Find the closest points between the rays through each screen point, and the ray from the
    // control point
    // and in the direction of the globe's surface normal. Compute the elevation difference between
    // these two
    // points, and use that as the change in airspace altitude.
    //
    // If the state keepControlPointsAboveTerrain is set, we prevent the control point from passing
    // any lower than
    // the terrain elevation beneath it.

    if (!(airspace instanceof Movable)) {
      return;
    }

    Movable movable = (Movable) airspace;
    Position referencePos = movable.getReferencePosition();
    if (referencePos == null) return;

    Vec4 referencePoint = wwd.getModel().getGlobe().computePointFromPosition(referencePos);

    Vec4 surfaceNormal =
        wwd.getModel()
            .getGlobe()
            .computeSurfaceNormalAtLocation(
                referencePos.getLatitude(), referencePos.getLongitude());
    Line verticalRay = new Line(referencePoint, surfaceNormal);
    Line screenRay =
        wwd.getView()
            .computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY());
    Line previousScreenRay =
        wwd.getView().computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());

    Vec4 pointOnLine = AirspaceEditorUtil.nearestPointOnLine(verticalRay, screenRay);
    Vec4 previousPointOnLine =
        AirspaceEditorUtil.nearestPointOnLine(verticalRay, previousScreenRay);

    Position pos = wwd.getModel().getGlobe().computePositionFromPoint(pointOnLine);
    Position previousPos = wwd.getModel().getGlobe().computePositionFromPoint(previousPointOnLine);
    double elevationChange = previousPos.getElevation() - pos.getElevation();

    double[] altitudes = this.getAirspace().getAltitudes();
    boolean[] terrainConformance = this.getAirspace().isTerrainConforming();

    if (this.isKeepControlPointsAboveTerrain()) {
      if (terrainConformance[LOWER_ALTITUDE]) {
        if (altitudes[LOWER_ALTITUDE] + elevationChange < 0.0)
          elevationChange = 0.0 - altitudes[LOWER_ALTITUDE];
      } else {
        double height =
            AirspaceEditorUtil.computeLowestHeightAboveSurface(
                wwd, this.getCurrentControlPoints(), LOWER_ALTITUDE);
        if (elevationChange <= -height) {
          elevationChange = -height;
        }
      }
    }

    altitudes[LOWER_ALTITUDE] += elevationChange;
    altitudes[UPPER_ALTITUDE] += elevationChange;
    this.getAirspace().setAltitudes(altitudes[LOWER_ALTITUDE], altitudes[UPPER_ALTITUDE]);

    this.fireAirspaceMoved(new AirspaceEditEvent(wwd, airspace, this));
  }
Esempio n. 24
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  protected void drawMany(DrawContext dc, Iterable<? extends WWIcon> icons, Layer layer) {
    if (dc == null) {
      String msg = Logging.getMessage("nullValue.DrawContextIsNull");
      Logging.logger().severe(msg);
      throw new IllegalArgumentException(msg);
    }

    if (dc.getVisibleSector() == null) return;

    SectorGeometryList geos = dc.getSurfaceGeometry();
    //noinspection RedundantIfStatement
    if (geos == null) return;

    if (icons == null) {
      String msg = Logging.getMessage("nullValue.IconIterator");
      Logging.logger().severe(msg);
      throw new IllegalArgumentException(msg);
    }

    Iterator<? extends WWIcon> iterator = icons.iterator();

    if (!iterator.hasNext()) return;

    double horizon = dc.getView().getHorizonDistance();

    while (iterator.hasNext()) {
      WWIcon icon = iterator.next();
      if (!isIconValid(icon, true)) {
        // Record feedback data for this WWIcon if feedback is enabled.
        if (icon != null) this.recordFeedback(dc, icon, null, null);

        continue;
      }

      if (!icon.isVisible()) {
        // Record feedback data for this WWIcon if feedback is enabled.
        this.recordFeedback(dc, icon, null, null);

        continue;
      }

      // Determine Cartesian position from the surface geometry if the icon is near the surface,
      // otherwise draw it from the globe.
      Position pos = icon.getPosition();
      Vec4 iconPoint = null;
      if (pos.getElevation() < dc.getGlobe().getMaxElevation()
          && !this.isAlwaysUseAbsoluteElevation()) {
        iconPoint = dc.getSurfaceGeometry().getSurfacePoint(icon.getPosition());
      }

      if (iconPoint == null) {
        Angle lat = pos.getLatitude();
        Angle lon = pos.getLongitude();
        double elevation = pos.getElevation();
        if (!this.isAlwaysUseAbsoluteElevation()) elevation += dc.getGlobe().getElevation(lat, lon);
        iconPoint = dc.getGlobe().computePointFromPosition(lat, lon, elevation);
      }

      double eyeDistance =
          icon.isAlwaysOnTop() ? 0 : dc.getView().getEyePoint().distanceTo3(iconPoint);

      // X-PATCH Marjan
      // extracted skip conditions into an overrideable method
      if (!meetsRenderCriteria(dc, icon, iconPoint, eyeDistance)) {
        this.recordFeedback(dc, icon, iconPoint, null);
        continue;
      }
      // X-END

      // The icons aren't drawn here, but added to the ordered queue to be drawn back-to-front.
      dc.addOrderedRenderable(new OrderedIcon(icon, iconPoint, layer, eyeDistance, horizon));

      if (icon.isShowToolTip()) this.addToolTip(dc, icon, iconPoint);
    }
  }
Esempio n. 25
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 /**
  * Constructor for the class
  *
  * @param p A Position object to supply the latitude, longitude and elevation.
  * @param alt The eye point vertical position to save.
  */
 public PositionWithAltitude(Position p, double alt) {
   super(p.getLatitude(), p.getLongitude(), p.getElevation());
   altitude = alt;
 }
  protected void onMoveTo(
      Position focalPosition,
      ViewInputAttributes.DeviceAttributes deviceAttributes,
      ViewInputAttributes.ActionAttributes actionAttribs) {
    BasicFlyView view = (BasicFlyView) this.getView();
    if (view == null) // include this test to ensure any derived implementation performs it
    {
      return;
    }

    // We're treating a speed parameter as smoothing here. A greater speed results in greater
    // smoothing and
    // slower response. Therefore the min speed used at lower altitudes ought to be *greater* than
    // the max
    // speed used at higher altitudes.
    double smoothing = this.getScaleValueElevation(deviceAttributes, actionAttribs);
    if (!actionAttribs.isEnableSmoothing()) smoothing = 0.0;

    Vec4 currentLookAtPt = view.getCenterPoint();
    if (currentLookAtPt == null) {
      currentLookAtPt = view.getGlobe().computePointFromPosition(focalPosition);
    }

    Vec4 currentEyePt = view.getEyePoint();
    double distanceToSurface = currentEyePt.distanceTo3(currentLookAtPt);
    Vec4 lookDirection = currentEyePt.subtract3(currentLookAtPt).normalize3();
    Vec4 newLookAtPt = view.getGlobe().computePointFromPosition(focalPosition);
    Vec4 flyToPoint = newLookAtPt.add3(lookDirection.multiply3(distanceToSurface));

    Position newPosition = view.getGlobe().computePositionFromPoint(flyToPoint);

    ViewUtil.ViewState viewCoords = view.getViewState(newPosition, focalPosition);

    this.stopAnimators();
    this.gotoAnimControl.put(
        VIEW_ANIM_HEADING,
        new RotateToAngleAnimator(
            view.getHeading(),
            viewCoords.getHeading(),
            smoothing,
            ViewPropertyAccessor.createHeadingAccessor(view)));
    this.gotoAnimControl.put(
        VIEW_ANIM_PITCH,
        new RotateToAngleAnimator(
            view.getPitch(),
            viewCoords.getPitch(),
            smoothing,
            ViewPropertyAccessor.createPitchAccessor(view)));

    double elevation =
        ((FlyViewLimits) view.getViewPropertyLimits())
            .limitEyeElevation(newPosition, view.getGlobe());
    if (elevation != newPosition.getElevation()) {
      newPosition = new Position(newPosition, elevation);
    }
    this.gotoAnimControl.put(
        VIEW_ANIM_POSITION,
        new MoveToPositionAnimator(
            view.getEyePosition(),
            newPosition,
            smoothing,
            ViewPropertyAccessor.createEyePositionAccessor(view)));

    view.firePropertyChange(AVKey.VIEW, null, view);
  }