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 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++; } }
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)); }
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); } }