/**
* Draw labels for picking.
*
* @param dc Current draw context.
* @param pickSupport the PickSupport instance to be used.
*/
protected void doPick(DrawContext dc, PickSupport pickSupport) {
GL gl = dc.getGL();
Angle heading = this.rotation;
double headingDegrees;
if (heading != null) headingDegrees = heading.degrees;
else headingDegrees = 0;
int x = this.screenPoint.x;
int y = this.screenPoint.y;
boolean matrixPushed = false;
try {
if (headingDegrees != 0) {
gl.glPushMatrix();
matrixPushed = true;
gl.glTranslated(x, y, 0);
gl.glRotated(headingDegrees, 0, 0, 1);
gl.glTranslated(-x, -y, 0);
}
for (int i = 0; i < this.lines.length; i++) {
Rectangle2D bounds = this.lineBounds[i];
double width = bounds.getWidth();
double height = bounds.getHeight();
x = this.screenPoint.x;
if (this.textAlign.equals(AVKey.CENTER)) x = x - (int) (width / 2.0);
else if (this.textAlign.equals(AVKey.RIGHT)) x = x - (int) width;
y -= this.lineHeight;
Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
PickedObject po = new PickedObject(colorCode, this.getPickedObject(), this.position, false);
pickSupport.addPickableObject(po);
// Draw line rectangle
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
try {
gl.glBegin(GL.GL_POLYGON);
gl.glVertex3d(x, y, 0);
gl.glVertex3d(x + width - 1, y, 0);
gl.glVertex3d(x + width - 1, y + height - 1, 0);
gl.glVertex3d(x, y + height - 1, 0);
gl.glVertex3d(x, y, 0);
} finally {
gl.glEnd();
}
y -= this.lineSpacing;
}
} finally {
if (matrixPushed) {
gl.glPopMatrix();
}
}
}
protected Angle computeIconRadius(DrawContext dc, double regionPixelSize, Sector drawSector) {
double minCosLat =
Math.min(drawSector.getMinLatitude().cos(), drawSector.getMaxLatitude().cos());
if (minCosLat < 0.001) return Angle.POS180;
Rectangle2D iconDimension = this.computeDrawDimension(regionPixelSize); // Meter
double dLat = iconDimension.getHeight() / dc.getGlobe().getRadius();
double dLon = iconDimension.getWidth() / dc.getGlobe().getRadius() / minCosLat;
return Angle.fromRadians(Math.sqrt(dLat * dLat + dLon * dLon) / 2);
}
protected List<Sector> computeSectors(DrawContext dc) {
if (this.locations == null || !this.locations.iterator().hasNext()) return null;
// Compute all locations bounding sector, then add some padding for the icon half diagonal
// extent
Sector sector = Sector.boundingSector(this.locations);
// Compute padding
double minCosLat = Math.min(sector.getMinLatitude().cos(), sector.getMaxLatitude().cos());
minCosLat = Math.max(minCosLat, .01); // avoids division by zero at the poles
Rectangle2D iconDimension = this.computeDrawDimension(dc, sector.getCentroid());
double diagonalLength =
Math.sqrt(
iconDimension.getWidth() * iconDimension.getWidth()
+ iconDimension.getHeight() * iconDimension.getHeight());
double padLatRadians = diagonalLength / 2 / dc.getGlobe().getRadius();
double padLonRadians = diagonalLength / 2 / dc.getGlobe().getRadius() / minCosLat;
// Apply padding to sector
Angle minLat = sector.getMinLatitude().subtractRadians(padLatRadians);
Angle maxLat = sector.getMaxLatitude().addRadians(padLatRadians);
Angle minLon = sector.getMinLongitude().subtractRadians(padLonRadians);
Angle maxLon = sector.getMaxLongitude().addRadians(padLatRadians);
return this.computeNormalizedSectors(new Sector(minLat, maxLat, minLon, maxLon));
}