static float computeZoomLevel(ImagePlot plot, ZoomChoice zoomChoice) {
int width = plot.getImageDataWidth();
int height = plot.getImageDataHeight();
float retval = zoomChoice.getZoomLevel();
if (zoomChoice.isSmartZoom()) {
retval = computeSmartZoom(width, height, zoomChoice.getZoomType());
} else if (zoomChoice.getZoomType() == ZoomType.TO_WIDTH) {
retval = (float) zoomChoice.getWidth() / (float) width;
if (zoomChoice.hasMaxZoomLevel()) {
if (retval > zoomChoice.getMaxZoomLevel()) retval = zoomChoice.getMaxZoomLevel();
}
} else if (zoomChoice.getZoomType() == ZoomType.FULL_SCREEN) {
retval =
VisUtil.getEstimatedFullZoomFactor(
VisUtil.FullType.WIDTH_HEIGHT,
width,
height,
zoomChoice.getWidth(),
zoomChoice.getHeight());
if (zoomChoice.hasMaxZoomLevel()) {
if (retval > zoomChoice.getMaxZoomLevel()) retval = zoomChoice.getMaxZoomLevel();
}
} else if (zoomChoice.getZoomType() == ZoomType.ARCSEC_PER_SCREEN_PIX) {
retval = (float) plot.getPixelScale() / zoomChoice.getArcsecPerScreenPix();
}
return retval;
}
@Override
protected File loadDataFile(TableServerRequest request) throws IOException, DataAccessException {
File file = createFile(request);
WorldPt pt = request.getWorldPtParam(ServerParams.USER_TARGET_WORLD_PT);
pt = VisUtil.convertToJ2000(pt);
doGetData(file, request.getParams(), pt);
return file;
}
private List<DrawObj> makeSelectedObj(WebPlot plot) {
List<DrawObj> retval;
_ptAry[0] = _firstPt;
_ptAry[1] = _currentPt;
Projection proj = plot.getProjection();
Pt anyPt1;
Pt anyPt2;
double dist;
boolean world;
if (proj.isSpecified()) {
anyPt1 = plot.getWorldCoords(_ptAry[0]);
anyPt2 = plot.getWorldCoords(_ptAry[1]);
dist = VisUtil.computeDistance((WorldPt) anyPt1, (WorldPt) anyPt2);
world = true;
} else {
anyPt1 = _ptAry[0];
anyPt2 = _ptAry[1];
dist = VisUtil.computeDistance(anyPt1, anyPt2);
world = false;
}
if (anyPt1 == null || anyPt2 == null) return null;
ShapeDataObj obj = ShapeDataObj.makeLine(anyPt1, anyPt2);
obj.setStyle(ShapeDataObj.Style.HANDLED);
setDistOnShape(obj, dist, ShapeDataObj.TextLocation.LINE_MID_POINT, world);
obj.setTextOffset(new OffsetScreenPt(-15, 0));
OffsetScreenPt angleOffPt;
if (_posAngle) {
Pt eastPt;
Pt westPt;
if (anyPt1.getX() > anyPt2.getX()) {
eastPt = anyPt1;
westPt = anyPt2;
} else {
eastPt = anyPt2;
westPt = anyPt1;
}
ShapeDataObj adj;
ShapeDataObj op;
double adjDist;
double opDist;
Pt lonDelta1TextPt;
if (world) {
WorldPt lonDelta1 = new WorldPt(eastPt.getX(), eastPt.getY());
WorldPt lonDelta2 = new WorldPt(westPt.getX(), eastPt.getY());
adjDist = VisUtil.computeDistance(lonDelta1, lonDelta2);
WorldPt latDelta1 = new WorldPt(westPt.getX(), eastPt.getY());
WorldPt latDelta2 = new WorldPt(westPt.getX(), westPt.getY());
opDist = VisUtil.computeDistance(latDelta1, latDelta2);
adj = ShapeDataObj.makeLine(lonDelta1, lonDelta2);
op = ShapeDataObj.makeLine(latDelta1, latDelta2);
lonDelta1TextPt = lonDelta1;
} else {
ImageWorkSpacePt lonDelta1 = new ImageWorkSpacePt(eastPt.getX(), eastPt.getY());
ImageWorkSpacePt lonDelta2 = new ImageWorkSpacePt(westPt.getX(), eastPt.getY());
adjDist = VisUtil.computeDistance(lonDelta1, lonDelta2);
ImageWorkSpacePt latDelta1 = new ImageWorkSpacePt(westPt.getX(), eastPt.getY());
ImageWorkSpacePt latDelta2 = new ImageWorkSpacePt(westPt.getX(), westPt.getY());
opDist = VisUtil.computeDistance(latDelta1, latDelta2);
adj = ShapeDataObj.makeLine(lonDelta1, lonDelta2);
op = ShapeDataObj.makeLine(latDelta1, latDelta2);
lonDelta1TextPt = lonDelta1;
}
setDistOnShape(adj, adjDist, ShapeDataObj.TextLocation.LINE_MID_POINT_OR_BOTTOM, world);
setDistOnShape(op, opDist, ShapeDataObj.TextLocation.LINE_MID_POINT_OR_TOP, world);
op.setTextOffset(new OffsetScreenPt(0, 15));
double sinX = opDist / dist;
double angle = Math.toDegrees(Math.asin(sinX));
String aStr = _nf.format(angle) + HTML_DEG;
ShapeDataObj angleShape =
ShapeDataObj.makeText(new OffsetScreenPt(8, -8), lonDelta1TextPt, aStr);
retval = Arrays.asList((DrawObj) obj, adj, op, angleShape);
} else {
retval = Arrays.asList((DrawObj) obj);
}
return retval;
}