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 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 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);
}
}
}
@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;
}
@Override
protected void doRender(DrawContext dc) {
if (!loaded) {
loaded = true;
loadAttempts++;
downloadData();
}
if (lastVerticalExaggeration != dc.getVerticalExaggeration() || lastGlobe != dc.getGlobe()) {
lastVerticalExaggeration = dc.getVerticalExaggeration();
lastGlobe = dc.getGlobe();
recalculateVertices(lastGlobe, lastVerticalExaggeration);
recalculateColors();
}
GL2 gl = dc.getGL().getGL2();
int push = GL2.GL_CLIENT_VERTEX_ARRAY_BIT;
if (colors != null) {
push |= GL2.GL_COLOR_BUFFER_BIT;
}
if (getOpacity() < 1.0) {
push |= GL2.GL_CURRENT_BIT;
}
gl.glPushClientAttrib(push);
if (colors != null) {
gl.glEnableClientState(GL2.GL_COLOR_ARRAY);
gl.glColorPointer(4, GL2.GL_DOUBLE, 0, colors.rewind());
}
if (getOpacity() < 1.0) {
setBlendingFunction(dc);
}
gl.glEnableClientState(GL2.GL_VERTEX_ARRAY);
gl.glVertexPointer(3, GL2.GL_DOUBLE, 0, vertices.rewind());
gl.glDrawElements(
GL2.GL_TRIANGLE_STRIP, indices.limit(), GL2.GL_UNSIGNED_INT, indices.rewind());
gl.glColor4d(1, 1, 1, 1);
gl.glPopClientAttrib();
}
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();
}
private boolean needToSplit(DrawContext dc, Sector sector) {
Vec4[] corners = sector.computeCornerPoints(dc.getGlobe(), dc.getVerticalExaggeration());
Vec4 centerPoint = sector.computeCenterPoint(dc.getGlobe(), dc.getVerticalExaggeration());
View view = dc.getView();
double d1 = view.getEyePoint().distanceTo3(corners[0]);
double d2 = view.getEyePoint().distanceTo3(corners[1]);
double d3 = view.getEyePoint().distanceTo3(corners[2]);
double d4 = view.getEyePoint().distanceTo3(corners[3]);
double d5 = view.getEyePoint().distanceTo3(centerPoint);
double minDistance = d1;
if (d2 < minDistance) minDistance = d2;
if (d3 < minDistance) minDistance = d3;
if (d4 < minDistance) minDistance = d4;
if (d5 < minDistance) minDistance = d5;
double cellSize =
(Math.PI * sector.getDeltaLatRadians() * dc.getGlobe().getRadius()) / 20; // TODO
return !(Math.log10(cellSize) <= (Math.log10(minDistance) - this.splitScale));
}
/**
* 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());
}
private void drawBoundingVolumes(DrawContext dc, ArrayList<MercatorTextureTile> tiles) {
float[] previousColor = new float[4];
dc.getGL().glGetFloatv(GL.GL_CURRENT_COLOR, previousColor, 0);
dc.getGL().glColor3d(0, 1, 0);
for (MercatorTextureTile tile : tiles) {
((Cylinder) tile.getExtent(dc)).render(dc);
}
Cylinder c =
dc.getGlobe()
.computeBoundingCylinder(dc.getVerticalExaggeration(), this.levels.getSector());
dc.getGL().glColor3d(1, 1, 0);
c.render(dc);
dc.getGL().glColor4fv(previousColor, 0);
}
protected void doRenderGeometry(DrawContext dc, String drawStyle) {
if (dc == null) {
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (dc.getGL() == null) {
String message = Logging.getMessage("nullValue.DrawingContextGLIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
double[] angles = this.computeAngles();
// Angles are equal, fallback to drawing a closed cylinder.
if (angles == null) {
super.doRenderGeometry(dc, drawStyle);
return;
}
double[] altitudes = this.getAltitudes(dc.getVerticalExaggeration());
boolean[] terrainConformant = this.isTerrainConforming();
double[] radii = this.getRadii();
int slices = this.getSlices();
int stacks = this.getStacks();
int loops = this.getLoops();
if (this.isEnableLevelOfDetail()) {
DetailLevel level = this.computeDetailLevel(dc);
Object o = level.getValue(SLICES);
if (o != null && o instanceof Integer) slices = (Integer) o;
o = level.getValue(STACKS);
if (o != null && o instanceof Integer) stacks = (Integer) o;
o = level.getValue(LOOPS);
if (o != null && o instanceof Integer) loops = (Integer) o;
o = level.getValue(DISABLE_TERRAIN_CONFORMANCE);
if (o != null && o instanceof Boolean && ((Boolean) o))
terrainConformant[0] = terrainConformant[1] = false;
}
Vec4 referenceCenter = this.computeReferenceCenter(dc);
this.setExpiryTime(this.nextExpiryTime(dc, terrainConformant));
this.clearElevationMap();
GL gl = dc.getGL();
OGLStackHandler ogsh = new OGLStackHandler();
try {
dc.getView().pushReferenceCenter(dc, referenceCenter);
if (Airspace.DRAW_STYLE_OUTLINE.equals(drawStyle)) {
this.drawRadialWallOutline(
dc,
radii,
angles[0],
altitudes,
terrainConformant,
loops,
stacks,
GeometryBuilder.INSIDE,
referenceCenter);
this.drawRadialWallOutline(
dc,
radii,
angles[1],
altitudes,
terrainConformant,
loops,
stacks,
GeometryBuilder.OUTSIDE,
referenceCenter);
// Outer cylinder isn't rendered if outer radius is zero.
if (radii[1] != 0.0) {
this.drawPartialCylinderOutline(
dc,
radii[1],
altitudes,
terrainConformant,
slices,
stacks,
GeometryBuilder.OUTSIDE,
angles[0],
angles[2],
referenceCenter);
}
// Inner cylinder isn't rendered if inner radius is zero.
if (radii[0] != 0.0) {
this.drawPartialCylinderOutline(
dc,
radii[0],
altitudes,
terrainConformant,
slices,
stacks,
GeometryBuilder.INSIDE,
angles[0],
angles[2],
referenceCenter);
}
} else if (Airspace.DRAW_STYLE_FILL.equals(drawStyle)) {
if (this.isEnableCaps()) {
ogsh.pushAttrib(gl, GL.GL_POLYGON_BIT);
gl.glEnable(GL.GL_CULL_FACE);
gl.glFrontFace(GL.GL_CCW);
}
if (this.isEnableCaps()) {
// Caps aren't rendered if radii are equal.
if (radii[0] != radii[1]) {
this.drawPartialDisk(
dc,
radii,
altitudes[1],
terrainConformant[1],
slices,
loops,
GeometryBuilder.OUTSIDE,
angles[0],
angles[2],
referenceCenter);
// Bottom cap isn't rendered if airspace is collapsed.
if (!this.isAirspaceCollapsed()) {
this.drawPartialDisk(
dc,
radii,
altitudes[0],
terrainConformant[0],
slices,
loops,
GeometryBuilder.INSIDE,
angles[0],
angles[2],
referenceCenter);
}
}
}
// Cylinders aren't rendered if airspace is collapsed.
if (!this.isAirspaceCollapsed()) {
this.drawRadialWall(
dc,
radii,
angles[0],
altitudes,
terrainConformant,
loops,
stacks,
GeometryBuilder.INSIDE,
referenceCenter);
this.drawRadialWall(
dc,
radii,
angles[1],
altitudes,
terrainConformant,
loops,
stacks,
GeometryBuilder.OUTSIDE,
referenceCenter);
// Outer cylinder isn't rendered if outer radius is zero.
if (radii[1] != 0.0) {
this.drawPartialCylinder(
dc,
radii[1],
altitudes,
terrainConformant,
slices,
stacks,
GeometryBuilder.OUTSIDE,
angles[0],
angles[2],
referenceCenter);
}
// Inner cylinder isn't rendered if inner radius is zero.
if (radii[0] != 0.0) {
this.drawPartialCylinder(
dc,
radii[0],
altitudes,
terrainConformant,
slices,
stacks,
GeometryBuilder.INSIDE,
angles[0],
angles[2],
referenceCenter);
}
}
}
} finally {
dc.getView().popReferenceCenter(dc);
ogsh.pop(gl);
}
}
protected void doRenderGeometry(
DrawContext dc, String drawStyle, List<LatLon> locations, List<Boolean> edgeFlags) {
if (dc == null) {
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (dc.getGL() == null) {
String message = Logging.getMessage("nullValue.DrawingContextGLIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (locations == null) {
String message = "nullValue.LocationsIsNull";
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (locations.size() == 0) return;
double[] altitudes = this.getAltitudes(dc.getVerticalExaggeration());
boolean[] terrainConformant = this.isTerrainConforming();
boolean enableCaps = this.isEnableCaps();
int subdivisions = this.subdivisions;
if (this.getAltitudeDatum()[0].equals(AVKey.ABOVE_GROUND_REFERENCE)
|| this.getAltitudeDatum()[1].equals(AVKey.ABOVE_GROUND_REFERENCE)) {
this.adjustForGroundReference(dc, terrainConformant, altitudes);
}
if (this.isEnableLevelOfDetail()) {
DetailLevel level = this.computeDetailLevel(dc);
Object o = level.getValue(SUBDIVISIONS);
if (o != null && o instanceof Integer) subdivisions = (Integer) o;
o = level.getValue(DISABLE_TERRAIN_CONFORMANCE);
if (o != null && o instanceof Boolean && (Boolean) o)
terrainConformant[0] = terrainConformant[1] = false;
}
Vec4 referenceCenter = this.computeReferenceCenter(dc);
this.setExpiryTime(this.nextExpiryTime(dc, terrainConformant));
this.clearElevationMap();
GL gl = dc.getGL();
OGLStackHandler ogsh = new OGLStackHandler();
try {
dc.getView().pushReferenceCenter(dc, referenceCenter);
if (Airspace.DRAW_STYLE_FILL.equals(drawStyle)) {
if (enableCaps && !this.isAirspaceCollapsed()) {
ogsh.pushAttrib(gl, GL.GL_POLYGON_BIT);
gl.glEnable(GL.GL_CULL_FACE);
gl.glFrontFace(GL.GL_CCW);
}
this.drawPolygonFill(
dc,
locations,
edgeFlags,
altitudes,
terrainConformant,
enableCaps,
subdivisions,
referenceCenter);
} else if (Airspace.DRAW_STYLE_OUTLINE.equals(drawStyle)) {
this.drawPolygonOutline(
dc,
locations,
edgeFlags,
altitudes,
terrainConformant,
enableCaps,
subdivisions,
referenceCenter);
}
} finally {
dc.getView().popReferenceCenter(dc);
ogsh.pop(gl);
}
}