/** * Compute the bounds of the text, if necessary. * * @param dc the current DrawContext. */ protected void computeBoundsIfNeeded(DrawContext dc) { // Do not compute bounds if they are available. Computing text bounds is expensive, so only do // this // calculation if necessary. if (this.bounds != null) return; TextRenderer textRenderer = OGLTextRenderer.getOrCreateTextRenderer(dc.getTextRendererCache(), this.getFont()); int width = 0; int maxLineHeight = 0; this.lineBounds = new Rectangle2D[this.lines.length]; for (int i = 0; i < this.lines.length; i++) { Rectangle2D lineBounds = textRenderer.getBounds(lines[i]); width = (int) Math.max(lineBounds.getWidth(), width); double thisLineHeight = Math.abs(lineBounds.getY()); maxLineHeight = (int) Math.max(thisLineHeight, maxLineHeight); this.lineBounds[i] = lineBounds; } this.lineHeight = maxLineHeight; // Compute final height using maxLineHeight and number of lines this.bounds = new Rectangle( this.lines.length, maxLineHeight, width, this.lines.length * maxLineHeight + this.lines.length * this.lineSpacing); }
/** * 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); } }