protected void setDepthFunc(DrawContext dc, OrderedIcon uIcon, Vec4 screenPoint) {
GL gl = dc.getGL();
if (uIcon.icon.isAlwaysOnTop()) {
gl.glDepthFunc(GL.GL_ALWAYS);
return;
}
Position eyePos = dc.getView().getEyePosition();
if (eyePos == null) {
gl.glDepthFunc(GL.GL_ALWAYS);
return;
}
double altitude = eyePos.getElevation();
if (altitude < (dc.getGlobe().getMaxElevation() * dc.getVerticalExaggeration())) {
double depth = screenPoint.z - (8d * 0.00048875809d);
depth = depth < 0d ? 0d : (depth > 1d ? 1d : depth);
gl.glDepthFunc(GL.GL_LESS);
gl.glDepthRange(depth, depth);
} else if (uIcon.eyeDistance > uIcon.horizonDistance) {
gl.glDepthFunc(GL.GL_EQUAL);
gl.glDepthRange(1d, 1d);
} else {
gl.glDepthFunc(GL.GL_ALWAYS);
}
}
/**
* 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);
}
}
@SuppressWarnings({"RedundantIfStatement"})
public boolean isInView(DrawContext dc) {
if (!viewFrustum.intersects(this.getExtent(dc.getGlobe(), dc.getVerticalExaggeration())))
return false;
// Check apparent size
if (getSizeInPixels(dc) <= MIN_CELL_SIZE_PIXELS) return false;
return true;
}
/**
* 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());
}
public void computeZone(DrawContext dc) {
try {
Position centerPos = ((OrbitView) dc.getView()).getCenterPosition();
if (centerPos != null) {
if (centerPos.latitude.degrees <= UTM_MAX_LATITUDE
&& centerPos.latitude.degrees >= UTM_MIN_LATITUDE) {
UTMCoord UTM =
UTMCoord.fromLatLon(
centerPos.getLatitude(), centerPos.getLongitude(), dc.getGlobe());
this.zone = UTM.getZone();
} else this.zone = 0;
}
} catch (Exception ex) {
this.zone = 0;
}
}
/**
* Compute the view range footprint on the globe.
*
* @param dc the current <code>DrawContext</code>
* @param steps the number of steps.
* @return an array list of <code>LatLon</code> forming a closed shape.
*/
protected ArrayList<LatLon> computeViewFootPrint(DrawContext dc, int steps) {
ArrayList<LatLon> positions = new ArrayList<LatLon>();
Position eyePos = dc.getView().getEyePosition();
Angle distance =
Angle.fromRadians(
Math.asin(
dc.getView().getFarClipDistance()
/ (dc.getGlobe().getRadius() + eyePos.getElevation())));
if (distance.degrees > 10) {
double headStep = 360d / steps;
Angle heading = Angle.ZERO;
for (int i = 0; i <= steps; i++) {
LatLon p = LatLon.greatCircleEndPosition(eyePos, heading, distance);
positions.add(p);
heading = heading.addDegrees(headStep);
}
return positions;
} else return null;
}
public void selectRenderables(DrawContext dc) {
try {
OrbitView view = (OrbitView) dc.getView();
// Compute easting and northing label offsets
Double pixelSize = view.computePixelSizeAtDistance(view.getZoom());
Double eastingOffset = view.getViewport().width * pixelSize * offsetFactorX / 2;
Double northingOffset = view.getViewport().height * pixelSize * offsetFactorY / 2;
// Derive labels center pos from the view center
Position centerPos = view.getCenterPosition();
double labelEasting;
double labelNorthing;
String labelHemisphere;
if (this.zone > 0) {
UTMCoord UTM =
UTMCoord.fromLatLon(centerPos.getLatitude(), centerPos.getLongitude(), dc.getGlobe());
labelEasting = UTM.getEasting() + eastingOffset;
labelNorthing = UTM.getNorthing() + northingOffset;
labelHemisphere = UTM.getHemisphere();
if (labelNorthing < 0) {
labelNorthing = 10e6 + labelNorthing;
labelHemisphere = AVKey.SOUTH;
}
} else {
UPSCoord UPS =
UPSCoord.fromLatLon(centerPos.getLatitude(), centerPos.getLongitude(), dc.getGlobe());
labelEasting = UPS.getEasting() + eastingOffset;
labelNorthing = UPS.getNorthing() + northingOffset;
labelHemisphere = UPS.getHemisphere();
}
Position labelPos;
for (int i = 0; i < this.extremes.length; i++) {
UTMExtremes levelExtremes = this.extremes[i];
double gridStep = Math.pow(10, i);
double gridStepTimesTen = gridStep * 10;
String graticuleType = getTypeFor((int) gridStep);
if (levelExtremes.minX <= levelExtremes.maxX) {
// Process easting scale labels for this level
for (double easting = levelExtremes.minX;
easting <= levelExtremes.maxX;
easting += gridStep) {
// Skip multiples of ten grid steps except for last (higher) level
if (i == this.extremes.length - 1 || easting % gridStepTimesTen != 0) {
try {
labelPos = computePosition(this.zone, labelHemisphere, easting, labelNorthing);
if (labelPos == null) continue;
Angle lat = labelPos.getLatitude();
Angle lon = labelPos.getLongitude();
Vec4 surfacePoint = getSurfacePoint(dc, lat, lon);
if (viewFrustum.contains(surfacePoint) && isPointInRange(dc, surfacePoint)) {
String text = String.valueOf((int) (easting % this.scaleModulo));
GeographicText gt = new UserFacingText(text, new Position(lat, lon, 0));
gt.setPriority(gridStepTimesTen);
addRenderable(gt, graticuleType);
}
} catch (IllegalArgumentException ignore) {
}
}
}
}
if (!(levelExtremes.maxYHemisphere.equals(AVKey.SOUTH) && levelExtremes.maxY == 0)) {
// Process northing scale labels for this level
String currentHemisphere = levelExtremes.minYHemisphere;
for (double northing = levelExtremes.minY;
(northing <= levelExtremes.maxY)
|| !currentHemisphere.equals(levelExtremes.maxYHemisphere);
northing += gridStep) {
// Skip multiples of ten grid steps except for last (higher) level
if (i == this.extremes.length - 1 || northing % gridStepTimesTen != 0) {
try {
labelPos = computePosition(this.zone, currentHemisphere, labelEasting, northing);
if (labelPos == null) continue;
Angle lat = labelPos.getLatitude();
Angle lon = labelPos.getLongitude();
Vec4 surfacePoint = getSurfacePoint(dc, lat, lon);
if (viewFrustum.contains(surfacePoint) && isPointInRange(dc, surfacePoint)) {
String text = String.valueOf((int) (northing % this.scaleModulo));
GeographicText gt = new UserFacingText(text, new Position(lat, lon, 0));
gt.setPriority(gridStepTimesTen);
addRenderable(gt, graticuleType);
}
} catch (IllegalArgumentException ignore) {
}
if (!currentHemisphere.equals(levelExtremes.maxYHemisphere)
&& northing >= 10e6 - gridStep) {
// Switch hemisphere
currentHemisphere = levelExtremes.maxYHemisphere;
northing = -gridStep;
}
}
}
} // end northing
} // for levels
} catch (IllegalArgumentException ignore) {
}
}
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);
}
}
// Rendering
public void draw(DrawContext dc) {
GL gl = dc.getGL();
boolean attribsPushed = false;
boolean modelviewPushed = false;
boolean projectionPushed = false;
try {
gl.glPushAttrib(
GL.GL_DEPTH_BUFFER_BIT
| GL.GL_COLOR_BUFFER_BIT
| GL.GL_ENABLE_BIT
| GL.GL_TEXTURE_BIT
| GL.GL_TRANSFORM_BIT
| GL.GL_VIEWPORT_BIT
| GL.GL_CURRENT_BIT);
attribsPushed = true;
gl.glDisable(GL.GL_TEXTURE_2D); // no textures
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
gl.glDisable(GL.GL_DEPTH_TEST);
double width = this.size.width;
double height = this.size.height;
// Load a parallel projection with xy dimensions (viewportWidth, viewportHeight)
// into the GL projection matrix.
java.awt.Rectangle viewport = dc.getView().getViewport();
gl.glMatrixMode(javax.media.opengl.GL.GL_PROJECTION);
gl.glPushMatrix();
projectionPushed = true;
gl.glLoadIdentity();
double maxwh = width > height ? width : height;
gl.glOrtho(0d, viewport.width, 0d, viewport.height, -0.6 * maxwh, 0.6 * maxwh);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPushMatrix();
modelviewPushed = true;
gl.glLoadIdentity();
// Scale to a width x height space
// located at the proper position on screen
double scale = this.computeScale(viewport);
Vec4 locationSW = this.computeLocation(viewport, scale);
gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
gl.glScaled(scale, scale, 1);
// Compute scale size in real world
Position referencePosition = dc.getViewportCenterPosition();
if (referencePosition != null) {
Vec4 groundTarget = dc.getGlobe().computePointFromPosition(referencePosition);
Double distance = dc.getView().getEyePoint().distanceTo3(groundTarget);
this.pixelSize = dc.getView().computePixelSizeAtDistance(distance);
Double scaleSize = this.pixelSize * width * scale; // meter
String unitLabel = "m";
if (this.unit.equals(UNIT_METRIC)) {
if (scaleSize > 10000) {
scaleSize /= 1000;
unitLabel = "Km";
}
} else if (this.unit.equals(UNIT_IMPERIAL)) {
scaleSize *= 3.280839895; // feet
unitLabel = "ft";
if (scaleSize > 5280) {
scaleSize /= 5280;
unitLabel = "mile(s)";
}
}
// Rounded division size
int pot = (int) Math.floor(Math.log10(scaleSize));
if (!Double.isNaN(pot)) {
int digit = Integer.parseInt(String.format("%.0f", scaleSize).substring(0, 1));
double divSize = digit * Math.pow(10, pot);
if (digit >= 5) divSize = 5 * Math.pow(10, pot);
else if (digit >= 2) divSize = 2 * Math.pow(10, pot);
double divWidth = width * divSize / scaleSize;
// Draw scale
if (!dc.isPickingMode()) {
// Set color using current layer opacity
Color backColor = this.getBackgroundColor(this.color);
float[] colorRGB = backColor.getRGBColorComponents(null);
gl.glColor4d(
colorRGB[0],
colorRGB[1],
colorRGB[2],
(double) backColor.getAlpha() / 255d * this.getOpacity());
gl.glTranslated((width - divWidth) / 2, 0d, 0d);
this.drawScale(dc, divWidth, height);
colorRGB = this.color.getRGBColorComponents(null);
gl.glColor4d(colorRGB[0], colorRGB[1], colorRGB[2], this.getOpacity());
gl.glTranslated(-1d / scale, 1d / scale, 0d);
this.drawScale(dc, divWidth, height);
// Draw label
String label = String.format("%.0f ", divSize) + unitLabel;
gl.glLoadIdentity();
gl.glDisable(GL.GL_CULL_FACE);
drawLabel(
dc,
label,
locationSW.add3(
new Vec4(divWidth * scale / 2 + (width - divWidth) / 2, height * scale, 0)));
} else {
// Picking
this.pickSupport.clearPickList();
this.pickSupport.beginPicking(dc);
// Draw unique color across the map
Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
// Add our object(s) to the pickable list
this.pickSupport.addPickableObject(colorCode, this, referencePosition, false);
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
gl.glTranslated((width - divWidth) / 2, 0d, 0d);
this.drawRectangle(dc, divWidth, height);
// Done picking
this.pickSupport.endPicking(dc);
this.pickSupport.resolvePick(dc, dc.getPickPoint(), this);
}
}
}
} finally {
if (projectionPushed) {
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPopMatrix();
}
if (modelviewPushed) {
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPopMatrix();
}
if (attribsPushed) gl.glPopAttrib();
}
}