Package gov.nasa.worldwind.geom

Examples of gov.nasa.worldwind.geom.Vec4

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    {
        Terrain terrain = dc.getTerrain();
        ExtrudedPolygon pol = (ExtrudedPolygon) super._pol_;

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

        int altitudeMode = pol.getAltitudeMode();
        double height = pol.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 : pol.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());
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            return;

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

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

        if (vec == null || previousVec == null)
        {
            return;
        }
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        Position referencePos = this._pol_.getReferencePosition();
       
        if (referencePos == null)
            return;

        Vec4 referencePoint = super._wwd.getModel().getGlobe().computePointFromPosition(referencePos);

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

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

        Position pos = super._wwd.getModel().getGlobe().computePositionFromPoint(pointOnLine);
        Position previousPos = super._wwd.getModel().getGlobe().computePositionFromPoint(previousPointOnLine);
        double elevationChange = pos.getElevation() - previousPos.getElevation();
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        // Try to find the edge that is closest to a ray passing through the screen point. We're trying to determine
        // the user's intent as to which edge a new two control points should be added to.

        Line ray = super._wwd.getView().computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());
        Vec4 pickPoint = super._intersectPolygonAltitudeAt(ray);

        double nearestDistance = Double.MAX_VALUE;
        int newVertexIndex = 0;

        // Loop through the control points and determine which edge is closest to the pick point
        for (int i = 0; i < this._lstMarkerControlPoints.size(); i++)
        {
            GfrMrkMoveAbs thisMarker = (GfrMrkMoveAbs) this._lstMarkerControlPoints.get(i);
            GfrMrkMoveAbs nextMarker = (GfrMrkMoveAbs) this._lstMarkerControlPoints.get(
                (i + 1) % this._lstMarkerControlPoints.size());

            Vec4 pointOnEdge = AirspaceEditorUtil.nearestPointOnSegment(thisMarker.getPoint(), nextMarker.getPoint(), pickPoint);
            if (!AirspaceEditorUtil.isPointBehindLineOrigin(ray, pointOnEdge))
            {
                double d = pointOnEdge.distanceTo3(pickPoint);
                if (d < nearestDistance)
                {
                    newVertexIndex = i + 1;
                    nearestDistance = d;
                }
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      //}
   }

   protected Position computeSurfacePosition(LatLon latLon)
   {
      Vec4 surfacePoint = wwd.getSceneController().getTerrain().getSurfacePoint(latLon.getLatitude(),
              latLon.getLongitude());
      if (surfacePoint != null)
         return wwd.getModel().getGlobe().computePositionFromPoint(surfacePoint);
      else
         return new Position(latLon, wwd.getModel().getGlobe().getElevation(latLon.getLatitude(),
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      }
     
      ((GfrRenderableLayerPickingCustomXxx) this._lyrCustomXxx).setTextAnnotationCustomShape(displayString);


      Vec4 screenPoint = this.computeAnnotationPosition(pos);
     
      if (screenPoint != null)
        ((GfrRenderableLayerPickingCustomXxx) this._lyrCustomXxx).setScreenPointAnnotationCustomShape(new Point((int) screenPoint.x, (int) screenPoint.y));

      ((GfrRenderableLayerPickingCustomXxx) this._lyrCustomXxx).setVisibleAttributesAnnotationCustomShape(true);
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      return displayString;
   }

   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(),
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    {
        Terrain terrain = dc.getTerrain();
        Path pol = (Path) super._pol_;

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

        int altitudeMode = pol.getAltitudeMode();
        double height = 1000; // pol.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 : pol.getPositions())
        {
            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());
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            return;

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

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

        if (vec == null || previousVec == null)
        {
            return;
        }
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        Position referencePos = this._pol_.getReferencePosition();
       
        if (referencePos == null)
            return;

        Vec4 referencePoint = super._wwd.getModel().getGlobe().computePointFromPosition(referencePos);

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

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

        Position pos = super._wwd.getModel().getGlobe().computePositionFromPoint(pointOnLine);
        Position previousPos = super._wwd.getModel().getGlobe().computePositionFromPoint(previousPointOnLine);
        double elevationChange = pos.getElevation() - previousPos.getElevation();
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Related Classes of gov.nasa.worldwind.geom.Vec4

  • _org.geoforge.amd.wwwx.examples.measuretool.GfrMeasureTool
  • org.geoforge.worldwind.builder.editor.GfrEditorObjShpPlnAbs
  • org.geoforge.worldwind.builder.editor.GfrEditorObjShpPlnCls
  • org.geoforge.worldwind.builder.editor.GfrEditorObjShpPlnOpn
  • org.geoforge.worldwind.builder.editor.GfrEditorObjShpSegWiseTool
  • org.geoforge.worldwind.layer.OurRlrLayerManagerLayer
  • org.geoforge.worldwind.nasa.worldwind.examples.util.LabeledPath
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