private void makePartialDiskTerrainConformant(
      DrawContext dc,
      int numCoords,
      float[] verts,
      double altitude,
      boolean terrainConformant,
      Vec4 referenceCenter) {
    Globe globe = dc.getGlobe();
    Matrix transform = this.computeTransform(dc.getGlobe(), dc.getVerticalExaggeration());

    for (int i = 0; i < numCoords; i += 3) {
      Vec4 vec = new Vec4(verts[i], verts[i + 1], verts[i + 2]);
      vec = vec.transformBy4(transform);
      Position p = globe.computePositionFromPoint(vec);

      double elevation = altitude;
      if (terrainConformant)
        elevation += this.computeElevationAt(dc, p.getLatitude(), p.getLongitude());

      vec = globe.computePointFromPosition(p.getLatitude(), p.getLongitude(), elevation);
      verts[i] = (float) (vec.x - referenceCenter.x);
      verts[i + 1] = (float) (vec.y - referenceCenter.y);
      verts[i + 2] = (float) (vec.z - referenceCenter.z);
    }
  }
  private void makePartialCylinderTerrainConformant(
      DrawContext dc,
      int slices,
      int stacks,
      float[] verts,
      double[] altitudes,
      boolean[] terrainConformant,
      Vec4 referenceCenter) {
    Globe globe = dc.getGlobe();
    Matrix transform = this.computeTransform(dc.getGlobe(), dc.getVerticalExaggeration());

    for (int i = 0; i <= slices; i++) {
      int index = i * (stacks + 1);
      index = 3 * index;
      Vec4 vec = new Vec4(verts[index], verts[index + 1], verts[index + 2]);
      vec = vec.transformBy4(transform);
      Position p = globe.computePositionFromPoint(vec);

      for (int j = 0; j <= stacks; j++) {
        double elevation = altitudes[j];
        if (terrainConformant[j])
          elevation += this.computeElevationAt(dc, p.getLatitude(), p.getLongitude());
        vec = globe.computePointFromPosition(p.getLatitude(), p.getLongitude(), elevation);

        index = j + i * (stacks + 1);
        index = 3 * index;
        verts[index] = (float) (vec.x - referenceCenter.x);
        verts[index + 1] = (float) (vec.y - referenceCenter.y);
        verts[index + 2] = (float) (vec.z - referenceCenter.z);
      }
    }
  }
  private void makeRadialWallTerrainConformant(
      DrawContext dc,
      int pillars,
      int stacks,
      float[] verts,
      double[] altitudes,
      boolean[] terrainConformant,
      Vec4 referenceCenter) {
    Globe globe = dc.getGlobe();
    Matrix transform = this.computeTransform(dc.getGlobe(), dc.getVerticalExaggeration());

    for (int p = 0; p <= pillars; p++) {
      int index = p;
      index = 3 * index;
      Vec4 vec = new Vec4(verts[index], verts[index + 1], verts[index + 2]);
      vec = vec.transformBy4(transform);
      Position pos = globe.computePositionFromPoint(vec);

      for (int s = 0; s <= stacks; s++) {
        double elevation = altitudes[s];
        if (terrainConformant[s])
          elevation += this.computeElevationAt(dc, pos.getLatitude(), pos.getLongitude());
        vec = globe.computePointFromPosition(pos.getLatitude(), pos.getLongitude(), elevation);

        index = p + s * (pillars + 1);
        index = 3 * index;
        verts[index] = (float) (vec.x - referenceCenter.x);
        verts[index + 1] = (float) (vec.y - referenceCenter.y);
        verts[index + 2] = (float) (vec.z - referenceCenter.z);
      }
    }
  }
  private boolean atMaxLevel(DrawContext dc) {
    Position vpc = dc.getViewportCenterPosition();
    if (dc.getView() == null || this.getLevels() == null || vpc == null) return false;

    if (!this.getLevels().getSector().contains(vpc.getLatitude(), vpc.getLongitude())) return true;

    Level nextToLast = this.getLevels().getNextToLastLevel();
    if (nextToLast == null) return true;

    Sector centerSector =
        nextToLast.computeSectorForPosition(
            vpc.getLatitude(), vpc.getLongitude(), this.getLevels().getTileOrigin());
    return this.needToSplit(dc, centerSector);
  }
示例#5
0
  /**
   * Compute the lat/lon position of the view center
   *
   * @param dc the current DrawContext
   * @param view the current View
   * @return the ground position of the view center or null
   */
  protected Position computeGroundPosition(DrawContext dc, View view) {
    if (view == null) return null;

    Position groundPos =
        view.computePositionFromScreenPoint(
            view.getViewport().getWidth() / 2, view.getViewport().getHeight() / 2);
    if (groundPos == null) return null;

    double elevation =
        dc.getGlobe().getElevation(groundPos.getLatitude(), groundPos.getLongitude());
    return new Position(
        groundPos.getLatitude(),
        groundPos.getLongitude(),
        elevation * dc.getVerticalExaggeration());
  }
  protected static boolean isTileVisible(
      DrawContext dc, Tile tile, double minDistanceSquared, double maxDistanceSquared) {
    if (!tile.getSector().intersects(dc.getVisibleSector())) return false;

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

    Angle lat =
        clampAngle(
            eyePos.getLatitude(),
            tile.getSector().getMinLatitude(),
            tile.getSector().getMaxLatitude());
    Angle lon =
        clampAngle(
            eyePos.getLongitude(),
            tile.getSector().getMinLongitude(),
            tile.getSector().getMaxLongitude());
    Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
    double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
    //noinspection RedundantIfStatement
    if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;

    return true;
  }
  protected Vec4 computeAnnotationPosition(Position pos) {
    Vec4 surfacePoint =
        this.wwd
            .getSceneController()
            .getTerrain()
            .getSurfacePoint(pos.getLatitude(), pos.getLongitude());
    if (surfacePoint == null) {
      Globe globe = this.wwd.getModel().getGlobe();
      surfacePoint =
          globe.computePointFromPosition(
              pos.getLatitude(),
              pos.getLongitude(),
              globe.getElevation(pos.getLatitude(), pos.getLongitude()));
    }

    return this.wwd.getView().project(surfacePoint);
  }
  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++;
    }
  }
 public void onSuccess(Position[] positions) {
   for (Position p : positions) {
     Logging.logger()
         .info(
             p.getLatitude().degrees
                 + ","
                 + p.getLongitude().degrees
                 + " --> "
                 + p.getElevation());
   }
 }
  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();
  }
    protected boolean isNavSectorVisible(
        DrawContext dc, double minDistanceSquared, double maxDistanceSquared) {
      if (!navSector.intersects(dc.getVisibleSector())) return false;

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

      // check for eyePos over globe
      if (Double.isNaN(eyePos.getLatitude().getDegrees())
          || Double.isNaN(eyePos.getLongitude().getDegrees())) return false;

      Angle lat =
          clampAngle(eyePos.getLatitude(), navSector.getMinLatitude(), navSector.getMaxLatitude());
      Angle lon =
          clampAngle(
              eyePos.getLongitude(), navSector.getMinLongitude(), navSector.getMaxLongitude());
      Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
      double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
      //noinspection RedundantIfStatement
      if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;

      return true;
    }
  private Vec4 computeReferencePoint(DrawContext dc) {
    if (dc.getViewportCenterPosition() != null)
      return dc.getGlobe().computePointFromPosition(dc.getViewportCenterPosition());

    java.awt.geom.Rectangle2D viewport = dc.getView().getViewport();
    int x = (int) viewport.getWidth() / 2;
    for (int y = (int) (0.5 * viewport.getHeight()); y >= 0; y--) {
      Position pos = dc.getView().computePositionFromScreenPoint(x, y);
      if (pos == null) continue;

      return dc.getGlobe().computePointFromPosition(pos.getLatitude(), pos.getLongitude(), 0d);
    }

    return null;
  }
示例#13
0
  private void makeSectionVertices(
      DrawContext dc,
      int locationPos,
      float[] locations,
      double[] altitude,
      boolean[] terrainConformant,
      int subdivisions,
      Matrix locationTransform,
      Vec4 referenceCenter,
      int vertexPos,
      float[] vertices) {
    GeometryBuilder gb = this.getGeometryBuilder();
    int numPoints = gb.getSubdivisionPointsVertexCount(subdivisions);

    Globe globe = dc.getGlobe();
    int index1 = 3 * locationPos;
    int index2 = 3 * (locationPos + 1);

    float[] locationVerts = new float[3 * numPoints];
    gb.makeSubdivisionPoints(
        locations[index1],
        locations[index1 + 1],
        locations[index1 + 2],
        locations[index2],
        locations[index2 + 1],
        locations[index2 + 2],
        subdivisions,
        locationVerts);

    for (int i = 0; i < numPoints; i++) {
      int index = 3 * i;
      Vec4 vec = new Vec4(locationVerts[index], locationVerts[index + 1], locationVerts[index + 2]);
      vec = vec.transformBy4(locationTransform);
      Position pos = globe.computePositionFromPoint(vec);

      for (int j = 0; j < 2; j++) {
        vec =
            this.computePointFromPosition(
                dc, pos.getLatitude(), pos.getLongitude(), altitude[j], terrainConformant[j]);

        index = 2 * i + j;
        index = 3 * (vertexPos + index);
        vertices[index] = (float) (vec.x - referenceCenter.x);
        vertices[index + 1] = (float) (vec.y - referenceCenter.y);
        vertices[index + 2] = (float) (vec.z - referenceCenter.z);
      }
    }
  }
示例#14
0
  private void makeCap(
      DrawContext dc,
      GeometryBuilder.IndexedTriangleArray ita,
      double altitude,
      boolean terrainConformant,
      int orientation,
      Matrix locationTransform,
      Vec4 referenceCenter,
      int indexPos,
      int[] indices,
      int vertexPos,
      float[] vertices,
      float[] normals) {
    GeometryBuilder gb = this.getGeometryBuilder();
    Globe globe = dc.getGlobe();

    int indexCount = ita.getIndexCount();
    int vertexCount = ita.getVertexCount();
    int[] locationIndices = ita.getIndices();
    float[] locationVerts = ita.getVertices();

    this.copyIndexArray(
        indexCount,
        (orientation == GeometryBuilder.INSIDE),
        locationIndices,
        vertexPos,
        indexPos,
        indices);

    for (int i = 0; i < vertexCount; i++) {
      int index = 3 * i;
      Vec4 vec = new Vec4(locationVerts[index], locationVerts[index + 1], locationVerts[index + 2]);
      vec = vec.transformBy4(locationTransform);

      Position pos = globe.computePositionFromPoint(vec);
      vec =
          this.computePointFromPosition(
              dc, pos.getLatitude(), pos.getLongitude(), altitude, terrainConformant);

      index = 3 * (vertexPos + i);
      vertices[index] = (float) (vec.x - referenceCenter.x);
      vertices[index + 1] = (float) (vec.y - referenceCenter.y);
      vertices[index + 2] = (float) (vec.z - referenceCenter.z);
    }

    gb.makeIndexedTriangleArrayNormals(
        indexPos, indexCount, indices, vertexPos, vertexCount, vertices, normals);
  }
示例#15
0
  protected String formatMeasurements(Position pos) {
    StringBuilder sb = new StringBuilder();

    /*
     //sb.append(this.unitsFormat.areaNL(this.getLabel(AREA_LABEL), this.getArea()));
     sb.append(this.unitsFormat.lengthNL(this.getLabel(PERIMETER_LABEL), this.getLength()));
    */

    // sb.append(this.unitsFormat.lengthNL(this.getLabel(WIDTH_LABEL),
    // this.shape.getEastWestRadius() * 2));
    // sb.append(this.unitsFormat.lengthNL(this.getLabel(LENGTH_LABEL),
    // this.shape.getNorthSouthRadius() * 2));
    // sb.append(this.unitsFormat.lengthNL(this.getLabel(HEIGHT_LABEL),
    // this.shape.getVerticalRadius() * 2));

    // sb.append(this.unitsFormat.angleNL(this.getLabel(HEADING_LABEL), this.shape.getHeading()));

    // if "activeControlPoint" is in fact one of the control points
    if (!this.arePositionsRedundant(pos, this.polygon.getReferencePosition())) {
      sb.append(this.unitsFormat.angleNL(this.getLabel(LATITUDE_LABEL), pos.getLatitude()));
      sb.append(this.unitsFormat.angleNL(this.getLabel(LONGITUDE_LABEL), pos.getLongitude()));
      sb.append(this.unitsFormat.lengthNL(this.getLabel(ALTITUDE_LABEL), pos.getAltitude()));
    }

    // if "activeControlPoint" is the shape itself
    if (this.polygon.getReferencePosition() != null) {
      sb.append(
          this.unitsFormat.angleNL(
              this.getLabel(CENTER_LATITUDE_LABEL),
              this.polygon.getReferencePosition().getLatitude()));
      sb.append(
          this.unitsFormat.angleNL(
              this.getLabel(CENTER_LONGITUDE_LABEL),
              this.polygon.getReferencePosition().getLongitude()));
      sb.append(
          this.unitsFormat.lengthNL(
              this.getLabel(CENTER_ALTITUDE_LABEL),
              this.polygon.getReferencePosition().getAltitude()));
    }

    return sb.toString();
  }
示例#16
0
  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);
  }
示例#17
0
  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);
    }
  }
示例#18
0
  protected void drawIcon(DrawContext dc) {
    if (this.getIconFilePath() == null) return;

    GL gl = dc.getGL();
    OGLStackHandler ogsh = new OGLStackHandler();

    try {
      // Initialize texture if necessary
      Texture iconTexture = dc.getTextureCache().getTexture(this.getIconFilePath());
      if (iconTexture == null) {
        this.initializeTexture(dc);
        iconTexture = dc.getTextureCache().getTexture(this.getIconFilePath());
        if (iconTexture == null) {
          String msg = Logging.getMessage("generic.ImageReadFailed");
          Logging.logger().finer(msg);
          return;
        }
      }
      gl.glDisable(GL.GL_DEPTH_TEST);

      double width = this.getScaledIconWidth();
      double height = this.getScaledIconHeight();

      // Load a parallel projection with xy dimensions (viewportWidth, viewportHeight)
      // into the GL projection matrix.
      java.awt.Rectangle viewport = dc.getView().getViewport();
      ogsh.pushProjectionIdentity(gl);
      double maxwh = width > height ? width : height;
      gl.glOrtho(0d, viewport.width, 0d, viewport.height, -0.6 * maxwh, 0.6 * maxwh);

      // Translate and scale
      ogsh.pushModelviewIdentity(gl);
      double scale = this.computeScale(viewport);
      Vec4 locationSW = this.computeLocation(viewport, scale);
      gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
      // Scale to 0..1 space
      gl.glScaled(scale, scale, 1);
      gl.glScaled(width, height, 1d);

      if (!dc.isPickingMode()) {
        gl.glEnable(GL.GL_BLEND);
        gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);

        // Draw background color behind the map
        gl.glColor4ub(
            (byte) this.backColor.getRed(),
            (byte) this.backColor.getGreen(),
            (byte) this.backColor.getBlue(),
            (byte) (this.backColor.getAlpha() * this.getOpacity()));
        dc.drawUnitQuad();

        // Draw world map icon
        gl.glColor4d(1d, 1d, 1d, this.getOpacity());
        gl.glEnable(GL.GL_TEXTURE_2D);
        iconTexture.bind();

        TextureCoords texCoords = iconTexture.getImageTexCoords();
        dc.drawUnitQuad(texCoords);
        gl.glBindTexture(GL.GL_TEXTURE_2D, 0);
        gl.glDisable(GL.GL_TEXTURE_2D);

        // Draw crosshair for current location
        gl.glLoadIdentity();
        gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
        // Scale to width x height space
        gl.glScaled(scale, scale, 1);
        // Set color
        float[] colorRGB = this.color.getRGBColorComponents(null);
        gl.glColor4d(colorRGB[0], colorRGB[1], colorRGB[2], this.getOpacity());

        // Draw crosshair
        Position groundPos = this.computeGroundPosition(dc, dc.getView());
        if (groundPos != null) {
          int x = (int) (width * (groundPos.getLongitude().degrees + 180) / 360);
          int y = (int) (height * (groundPos.getLatitude().degrees + 90) / 180);
          int w = 10; // cross branch length
          // Draw
          gl.glBegin(GL.GL_LINE_STRIP);
          gl.glVertex3d(x - w, y, 0);
          gl.glVertex3d(x + w + 1, y, 0);
          gl.glEnd();
          gl.glBegin(GL.GL_LINE_STRIP);
          gl.glVertex3d(x, y - w, 0);
          gl.glVertex3d(x, y + w + 1, 0);
          gl.glEnd();
        }

        // Draw view footprint in map icon space
        if (this.showFootprint) {
          this.footPrintPositions = this.computeViewFootPrint(dc, 32);
          if (this.footPrintPositions != null) {
            gl.glBegin(GL.GL_LINE_STRIP);
            LatLon p1 = this.footPrintPositions.get(0);
            for (LatLon p2 : this.footPrintPositions) {
              int x = (int) (width * (p2.getLongitude().degrees + 180) / 360);
              int y = (int) (height * (p2.getLatitude().degrees + 90) / 180);
              // Draw
              if (LatLon.locationsCrossDateline(p1, p2)) {
                int y1 = (int) (height * (p1.getLatitude().degrees + 90) / 180);
                gl.glVertex3d(x < width / 2 ? width : 0, (y1 + y) / 2, 0);
                gl.glEnd();
                gl.glBegin(GL.GL_LINE_STRIP);
                gl.glVertex3d(x < width / 2 ? 0 : width, (y1 + y) / 2, 0);
              }
              gl.glVertex3d(x, y, 0);
              p1 = p2;
            }
            gl.glEnd();
          }
        }
        // Draw 1px border around and inside the map
        gl.glBegin(GL.GL_LINE_STRIP);
        gl.glVertex3d(0, 0, 0);
        gl.glVertex3d(width, 0, 0);
        gl.glVertex3d(width, height - 1, 0);
        gl.glVertex3d(0, height - 1, 0);
        gl.glVertex3d(0, 0, 0);
        gl.glEnd();
      } else {
        // Picking
        this.pickSupport.clearPickList();
        this.pickSupport.beginPicking(dc);
        // Where in the world are we picking ?
        Position pickPosition =
            computePickPosition(
                dc, locationSW, new Dimension((int) (width * scale), (int) (height * scale)));
        Color color = dc.getUniquePickColor();
        int colorCode = color.getRGB();
        this.pickSupport.addPickableObject(colorCode, this, pickPosition, false);
        gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
        dc.drawUnitQuad();
        this.pickSupport.endPicking(dc);
        this.pickSupport.resolvePick(dc, dc.getPickPoint(), this);
      }
    } finally {
      dc.restoreDefaultDepthTesting();
      dc.restoreDefaultCurrentColor();
      if (dc.isPickingMode()) dc.restoreDefaultBlending();
      ogsh.pop(gl);
    }
  }
示例#19
0
  /**
   * Compute the label's screen position from its geographic position.
   *
   * @param dc Current draw context.
   */
  protected void computeGeometry(DrawContext dc) {
    // Project the label position onto the viewport
    Position pos = this.getPosition();
    if (pos == null) return;

    this.placePoint = dc.computeTerrainPoint(pos.getLatitude(), pos.getLongitude(), 0);
    this.screenPlacePoint = dc.getView().project(this.placePoint);

    this.eyeDistance = this.placePoint.distanceTo3(dc.getView().getEyePoint());

    boolean orientationReversed = false;
    if (this.orientationPosition != null) {
      // Project the orientation point onto the screen
      Vec4 orientationPlacePoint =
          dc.computeTerrainPoint(
              this.orientationPosition.getLatitude(), this.orientationPosition.getLongitude(), 0);
      Vec4 orientationScreenPoint = dc.getView().project(orientationPlacePoint);

      this.rotation = this.computeRotation(this.screenPlacePoint, orientationScreenPoint);

      // The orientation is reversed if the orientation point falls to the right of the screen
      // point. Text is
      // never drawn upside down, so when the orientation is reversed the text flips vertically to
      // keep the text
      // right side up.
      orientationReversed = (orientationScreenPoint.x <= this.screenPlacePoint.x);
    }

    this.computeBoundsIfNeeded(dc);

    Offset offset = this.getOffset();
    Point2D offsetPoint =
        offset.computeOffset(this.bounds.getWidth(), this.bounds.getHeight(), null, null);

    // If a rotation is applied to the text, then rotate the offset as well. An offset in the x
    // direction
    // will move the text along the orientation line, and a offset in the y direction will move the
    // text
    // perpendicular to the orientation line.
    if (this.rotation != null) {
      double dy = offsetPoint.getY();

      // If the orientation is reversed we need to adjust the vertical offset to compensate for the
      // flipped
      // text. For example, if the offset normally aligns the top of the text with the place point
      // then without
      // this adjustment the bottom of the text would align with the place point when the
      // orientation is
      // reversed.
      if (orientationReversed) {
        dy = -(dy + this.bounds.getHeight());
      }

      Vec4 pOffset = new Vec4(offsetPoint.getX(), dy);
      Matrix rot = Matrix.fromRotationZ(this.rotation.multiply(-1));

      pOffset = pOffset.transformBy3(rot);

      offsetPoint = new Point((int) pOffset.getX(), (int) pOffset.getY());
    }

    int x = (int) (this.screenPlacePoint.x + offsetPoint.getX());
    int y = (int) (this.screenPlacePoint.y - offsetPoint.getY());

    this.screenPoint = new Point(x, y);
    this.screenExtent = this.computeTextExtent(x, y, this.rotation);
  }