コード例 #1
0
  protected void onHorizontalTranslateRel(
      Angle forwardChange, Angle sideChange, ViewInputAttributes.ActionAttributes actionAttribs) {
    View view = this.getView();
    if (view == null) // include this test to ensure any derived implementation performs it
    {
      return;
    }

    if (forwardChange.equals(Angle.ZERO) && sideChange.equals(Angle.ZERO)) {
      return;
    }

    if (view instanceof BasicFlyView) {

      Vec4 forward = view.getForwardVector();
      Vec4 up = view.getUpVector();
      Vec4 side = forward.transformBy3(Matrix.fromAxisAngle(Angle.fromDegrees(90), up));

      forward = forward.multiply3(forwardChange.getDegrees());
      side = side.multiply3(sideChange.getDegrees());
      Vec4 eyePoint = view.getEyePoint();
      eyePoint = eyePoint.add3(forward.add3(side));
      Position newPosition = view.getGlobe().computePositionFromPoint(eyePoint);

      this.setEyePosition(this.uiAnimControl, view, newPosition, actionAttribs);
      view.firePropertyChange(AVKey.VIEW, null, view);
    }
  }
コード例 #2
0
  protected void assembleVertexControlPoints(DrawContext dc) {
    Terrain terrain = dc.getTerrain();
    ExtrudedPolygon polygon = this.getPolygon();

    Position refPos = polygon.getReferencePosition();
    Vec4 refPoint = terrain.getSurfacePoint(refPos.getLatitude(), refPos.getLongitude(), 0);

    int altitudeMode = polygon.getAltitudeMode();
    double height = polygon.getHeight();

    Vec4 vaa = null;
    double vaaLength = 0; // used to compute independent length of each cap vertex
    double vaLength = 0;

    int i = 0;
    for (LatLon location : polygon.getOuterBoundary()) {
      Vec4 vert;

      // Compute the top/cap point.
      if (altitudeMode == WorldWind.CONSTANT || !(location instanceof Position)) {
        if (vaa == null) {
          // Compute the vector lengths of the top and bottom points at the reference position.
          vaa = refPoint.multiply3(height / refPoint.getLength3());
          vaaLength = vaa.getLength3();
          vaLength = refPoint.getLength3();
        }

        // Compute the bottom point, which is on the terrain.
        vert = terrain.getSurfacePoint(location.getLatitude(), location.getLongitude(), 0);

        double delta = vaLength - vert.dot3(refPoint) / vaLength;
        vert = vert.add3(vaa.multiply3(1d + delta / vaaLength));
      } else if (altitudeMode == WorldWind.RELATIVE_TO_GROUND) {
        vert =
            terrain.getSurfacePoint(
                location.getLatitude(),
                location.getLongitude(),
                ((Position) location).getAltitude());
      } else // WorldWind.ABSOLUTE
      {
        vert =
            terrain
                .getGlobe()
                .computePointFromPosition(
                    location.getLatitude(),
                    location.getLongitude(),
                    ((Position) location).getAltitude() * terrain.getVerticalExaggeration());
      }

      Position vertexPosition = this.wwd.getModel().getGlobe().computePositionFromPoint(vert);

      this.controlPoints.add(
          new ControlPointMarker(
              MOVE_VERTEX_ACTION, vertexPosition, vert, this.vertexControlAttributes, i));
      i++;
    }
  }
コード例 #3
0
ファイル: Box.java プロジェクト: wcmatthysen/World-Wind-Java
  /**
   * Construct a unit-length cube centered at a specified point.
   *
   * @param point the center of the cube.
   * @throws IllegalArgumentException if the point is null.
   */
  public Box(Vec4 point) {
    if (point == null) {
      String msg = Logging.getMessage("nullValue.PointIsNull");
      Logging.error(msg);
      throw new IllegalArgumentException(msg);
    }

    this.ru = new Vec4(1, 0, 0, 1);
    this.su = new Vec4(0, 1, 0, 1);
    this.tu = new Vec4(0, 0, 1, 1);

    this.r = this.ru;
    this.s = this.su;
    this.t = this.tu;

    this.rLength = 1;
    this.sLength = 1;
    this.tLength = 1;

    // Plane normals point outwards from the box.
    this.planes = new Plane[6];
    double d = 0.5 * point.getLength3();
    this.planes[0] = new Plane(-this.ru.x, -this.ru.y, -this.ru.z, -(d + 0.5));
    this.planes[1] = new Plane(+this.ru.x, +this.ru.y, +this.ru.z, -(d + 0.5));
    this.planes[2] = new Plane(-this.su.x, -this.su.y, -this.su.z, -(d + 0.5));
    this.planes[3] = new Plane(+this.su.x, +this.su.y, +this.su.z, -(d + 0.5));
    this.planes[4] = new Plane(-this.tu.x, -this.tu.y, -this.tu.z, -(d + 0.5));
    this.planes[5] = new Plane(+this.tu.x, +this.tu.y, +this.tu.z, -(d + 0.5));

    this.center = ru.add3(su).add3(tu).multiply3(0.5);

    Vec4 rHalf = r.multiply3(0.5);
    this.topCenter = this.center.add3(rHalf);
    this.bottomCenter = this.center.subtract3(rHalf);
  }
コード例 #4
0
ファイル: Box.java プロジェクト: wcmatthysen/World-Wind-Java
  /**
   * Construct a box from three specified unit axes and the locations of the box faces relative to
   * those axes. The box faces are specified by two scalar locations along each axis, each location
   * indicating a face. The non-unit length of an axis is the distance between its respective two
   * locations. The longest side is specified first, followed by the second longest side and then
   * the shortest side.
   *
   * <p>The axes are normally principal axes computed from a collection of points in order to form
   * an oriented bounding volume. See {@link WWMath#computePrincipalAxes(Iterable)}.
   *
   * <p>Note: No check is made to ensure the order of the face locations.
   *
   * @param axes the unit-length axes.
   * @param rMin the location along the first axis corresponding to the left-most box side relative
   *     to the axis.
   * @param rMax the location along the first axis corresponding to the right-most box side relative
   *     to the axis.
   * @param sMin the location along the second axis corresponding to the left-most box side relative
   *     to the axis.
   * @param sMax the location along the second axis corresponding to the right-most box side
   *     relative to the axis.
   * @param tMin the location along the third axis corresponding to the left-most box side relative
   *     to the axis.
   * @param tMax the location along the third axis corresponding to the right-most box side relative
   *     to the axis.
   * @throws IllegalArgumentException if the axes array or one of its entries is null.
   */
  public Box(
      Vec4 axes[], double rMin, double rMax, double sMin, double sMax, double tMin, double tMax) {
    if (axes == null || axes[0] == null || axes[1] == null || axes[2] == null) {
      String msg = Logging.getMessage("nullValue.AxesIsNull");
      Logging.error(msg);
      throw new IllegalArgumentException(msg);
    }

    this.ru = axes[0];
    this.su = axes[1];
    this.tu = axes[2];

    this.r = this.ru.multiply3(rMax - rMin);
    this.s = this.su.multiply3(sMax - sMin);
    this.t = this.tu.multiply3(tMax - tMin);

    this.rLength = this.r.getLength3();
    this.sLength = this.s.getLength3();
    this.tLength = this.t.getLength3();

    // Plane normals point outward from the box.
    this.planes = new Plane[6];
    this.planes[0] = new Plane(-this.ru.x, -this.ru.y, -this.ru.z, +rMin);
    this.planes[1] = new Plane(+this.ru.x, +this.ru.y, +this.ru.z, -rMax);
    this.planes[2] = new Plane(-this.su.x, -this.su.y, -this.su.z, +sMin);
    this.planes[3] = new Plane(+this.su.x, +this.su.y, +this.su.z, -sMax);
    this.planes[4] = new Plane(-this.tu.x, -this.tu.y, -this.tu.z, +tMin);
    this.planes[5] = new Plane(+this.tu.x, +this.tu.y, +this.tu.z, -tMax);

    double a = 0.5 * (rMin + rMax);
    double b = 0.5 * (sMin + sMax);
    double c = 0.5 * (tMin + tMax);
    this.center = ru.multiply3(a).add3(su.multiply3(b)).add3(tu.multiply3(c));

    Vec4 rHalf = r.multiply3(0.5);
    this.topCenter = this.center.add3(rHalf);
    this.bottomCenter = this.center.subtract3(rHalf);
  }
コード例 #5
0
  public void lookAt(Position lookAtPos, long timeToMove) {
    BasicFlyView view = (BasicFlyView) this.getView();
    Vec4 lookDirection;
    double distanceToSurface;
    Vec4 currentLookAtPt = view.getCenterPoint();
    Position newPosition;
    if (currentLookAtPt == null) {
      view.getGlobe().computePointFromPosition(lookAtPos);
      double elevAtLookAtPos =
          view.getGlobe().getElevation(lookAtPos.getLatitude(), lookAtPos.getLongitude());
      newPosition = new Position(lookAtPos, elevAtLookAtPos + 10000);
    } else {
      Vec4 currentEyePt = view.getEyePoint();
      distanceToSurface = currentEyePt.distanceTo3(currentLookAtPt);
      lookDirection = currentLookAtPt.subtract3(currentEyePt).normalize3();
      Vec4 newLookAtPt = view.getGlobe().computePointFromPosition(lookAtPos);
      Vec4 flyToPoint = newLookAtPt.add3(lookDirection.multiply3(-distanceToSurface));
      newPosition = view.getGlobe().computePositionFromPoint(flyToPoint);
    }

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

    FlyToFlyViewAnimator panAnimator =
        FlyToFlyViewAnimator.createFlyToFlyViewAnimator(
            view,
            view.getEyePosition(),
            newPosition,
            view.getHeading(),
            viewCoords.getHeading(),
            view.getPitch(),
            viewCoords.getPitch(),
            view.getEyePosition().getElevation(),
            viewCoords.getPosition().getElevation(),
            timeToMove,
            WorldWind.ABSOLUTE);

    this.gotoAnimControl.put(VIEW_ANIM_PAN, panAnimator);
    this.getView().firePropertyChange(AVKey.VIEW, null, this.getView());

    view.firePropertyChange(AVKey.VIEW, null, view);
  }
コード例 #6
0
ファイル: SearchArea.java プロジェクト: metsci/worldwind
  /**
   * Determine the positions that make up the arrowhead.
   *
   * @param dc Current draw context.
   * @param startPosition Position of the arrow's base.
   * @param endPosition Position of the arrow head tip.
   * @return Positions that define the arrowhead.
   */
  protected List<Position> computeArrowheadPositions(
      DrawContext dc, Position startPosition, Position endPosition) {
    Globe globe = dc.getGlobe();

    // Arrowhead looks like this:
    //                  _
    //        A\         | 1/2 width
    // ________B\       _|
    // Pt. 1    /
    //        C/
    //         | |
    //      Length

    Vec4 p1 = globe.computePointFromPosition(startPosition);
    Vec4 pB = globe.computePointFromPosition(endPosition);

    // Find vector in the direction of the arrow
    Vec4 vB1 = p1.subtract3(pB);

    double arrowLengthFraction = this.getArrowLength();

    // Find the point at the base of the arrowhead
    Vec4 arrowBase = pB.add3(vB1.multiply3(arrowLengthFraction));

    Vec4 normal = globe.computeSurfaceNormalAtPoint(arrowBase);

    // Compute the length of the arrowhead
    double arrowLength = vB1.getLength3() * arrowLengthFraction;
    double arrowHalfWidth = arrowLength * this.getArrowAngle().tanHalfAngle();

    // Compute a vector perpendicular to the segment and the normal vector
    Vec4 perpendicular = vB1.cross3(normal);
    perpendicular = perpendicular.normalize3().multiply3(arrowHalfWidth);

    // Find points A and C
    Vec4 pA = arrowBase.add3(perpendicular);
    Vec4 pC = arrowBase.subtract3(perpendicular);

    return TacticalGraphicUtil.asPositionList(globe, pA, pB, pC);
  }
コード例 #7
0
  /**
   * Compute points on either side of a line segment. This method requires a point on the line, and
   * either a next point, previous point, or both.
   *
   * @param point Center point about which to compute side points.
   * @param prev Previous point on the line. May be null if {@code next} is non-null.
   * @param next Next point on the line. May be null if {@code prev} is non-null.
   * @param leftPositions Left position will be added to this list.
   * @param rightPositions Right position will be added to this list.
   * @param halfWidth Distance from the center line to the left or right lines.
   * @param globe Current globe.
   */
  protected void generateParallelPoints(
      Vec4 point,
      Vec4 prev,
      Vec4 next,
      List<Position> leftPositions,
      List<Position> rightPositions,
      double halfWidth,
      Globe globe) {
    if ((point == null) || (prev == null && next == null)) {
      String message = Logging.getMessage("nullValue.PointIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }
    if (leftPositions == null || rightPositions == null) {
      String message = Logging.getMessage("nullValue.PositionListIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }
    if (globe == null) {
      String message = Logging.getMessage("nullValue.GlobeIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }

    Vec4 offset;
    Vec4 normal = globe.computeSurfaceNormalAtPoint(point);

    // Compute vector in the direction backward along the line.
    Vec4 backward = (prev != null) ? prev.subtract3(point) : point.subtract3(next);

    // Compute a vector perpendicular to segment BC, and the globe normal vector.
    Vec4 perpendicular = backward.cross3(normal);

    double length;
    // If both next and previous points are supplied then calculate the angle that bisects the angle
    // current, next, prev.
    if (next != null && prev != null && !Vec4.areColinear(prev, point, next)) {
      // Compute vector in the forward direction.
      Vec4 forward = next.subtract3(point);

      // Calculate the vector that bisects angle ABC.
      offset = forward.normalize3().add3(backward.normalize3());
      offset = offset.normalize3();

      // Compute the scalar triple product of the vector BC, the normal vector, and the offset
      // vector to
      // determine if the offset points to the left or the right of the control line.
      double tripleProduct = perpendicular.dot3(offset);
      if (tripleProduct < 0) {
        offset = offset.multiply3(-1);
      }

      // Determine the length of the offset vector that will keep the left and right lines parallel
      // to the control
      // line.
      Angle theta = backward.angleBetween3(offset);
      if (!Angle.ZERO.equals(theta)) length = halfWidth / theta.sin();
      else length = halfWidth;
    } else {
      offset = perpendicular.normalize3();
      length = halfWidth;
    }
    offset = offset.multiply3(length);

    // Determine the left and right points by applying the offset.
    Vec4 ptRight = point.add3(offset);
    Vec4 ptLeft = point.subtract3(offset);

    // Convert cartesian points to geographic.
    Position posLeft = globe.computePositionFromPoint(ptLeft);
    Position posRight = globe.computePositionFromPoint(ptRight);

    leftPositions.add(posLeft);
    rightPositions.add(posRight);
  }
コード例 #8
0
  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);
  }