FIGS GRAPHICS WINDOW
This is a client side imagemap of the FIGS Graphics Window.
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FIGS GRAPHICS WINDOW
This is a client side imagemap of the FIGS Graphics Window.
Click on different regions for descriptions.
Use the scrollbars if your browser does not show the entire display.
You may also resize the window
split to favor the top or bottom frame.
The main display windows allows interactive viewing of events. Giving the user control over how the
event is being viewed.
Multiple windows can be opened, showing different views, all linked to the same event.
Menus
File
The File menu offers output in the following Postscript Formats:
- Portrait B&W (figs.ps)
- Portrait Color (figs.cps)
- Landscape B&W (figs.ls)
- Landscape Color (figs.cls)
The postscript file is wysiwyg style, so the window dimensions
determine the file dimensions
View
The view menu allows you to change the detector elements from solid to wire
frame and lets you compress the z-axis so that more of the detector can be
viewed on screen.
Additionally, Some of the preset views offer additional options in this menu
to view specific rotations (U-view (11.31 deg.) for example).
Display
The display menu allows you to turn on and off different detector elements,
the SSD and PWC tracks, and also gives you the option of viewing the FIGS
origin coordinates on-screen.
Centering Controls
When you use the mouse to select a Track (or object)it is highlighted in red .
These controls will reposition the Crosshairs, and trace the tracks through
the display. You can Center the track in the display (geometric
mean of object coordinates), move to the beginning (<) or the end (>) of the track
or use the slider to move the track through the display window.
The Views button will highlight the same track in all open windows.
These controls work for objects as well, with the controls tracing through the object's outline.
Horizontal and Vertical Pan
The vertical and horizontal sliders that are farthest out in the windows control the
window panning. Each slider also has a Reset Button to return you to the default positions.
y and z rotators
The second set of horizontal and vertical sliders are for rotating the view.
Click and drag the slider, or click on the sides of the slider to step through. One slider rotates
you around the y axis, the other around the z axis.
The axis of rotation are based on a coordinate system where the z axis is parallel to the initial beam direction.
The center of rotation is determined by the position of the crosshairs.
If you are having trouble getting the axis of rotation centered where you want it:
first, try switching to a predetermined view where the crosshairs are
conveniently positioned in that view for most rotations.
second, select any track or object and use the Centering
controls to position the cross-hairs where you want them on that object.
third, master the art of crosshair placement. When you click the center mouse button, it
relocates the crosshairs to the position of your mouse in the display. Of course, with a 2 dimensional
mouse, you also are limited to a 2-dimensional relocation, and the crosshairs are repositioned in the
plane of the display, without changing depth in the direction perpendicular to the plane of the
display. Note, this means it may change x, y, and z coordinates if your display is rotated in y and z.
So, setting your rotations to 0 or 90 degrees, reposition the crosshairs in that view, thus setting
two of the dimensional coordinates. Then rotate your view by 90 degrees and again position the crosshairs.
This should set the third dimension.
reset: Each view has a default perspective, and the reset buttons return you to the
default.
The scale is measured in degrees, with 0 degrees of y and z rotation giving you a
side view of the detectors.
Set Location
Returns the cross-hairs to their preset location for that viewing window and
centers it in the screen. It does not change the zoom or rotation.
Zoom control
The horizontal slider closest to the display is the Zoom control. With this you can zoom in or out relative to
your current view. Click and drag the slider, or click on the sides of the slider to step through. The scale only goes to +/- 100 but is a relative scale (see Set Zoom to Zero
There is no default zoom level, other than what is chosen by the view that you select.
Mouse Zooming can be done by using the mouse to make a window covering the area you want to zoom
in on, and clicking inside that window.
Set Zoom to Zero
The Zoom is a relative scale, and by pressing the Set Zoom to Zero button, you reset your slider to 0
(without affecting the view), so you can continue zooming.
Main Graphics Display
The window in which the detectors and tracks are displayed.
- The line style identifies reconstructed tracks according to the
following scheme:
- solid lines are drawn when a track in the PWC is matched up
with a track in the SSD
- dashed lines are drawn when a track in the PWC is not matched
to a track in the SSD
- In the solid view, dotted lines represent those hidden from view
- Tracks from the PWC are colored based on particle identification from the
reconstruction code, and use ISTAT values.
| COLOR | Identification | ISTAT Value |
|---|
| black | no Cerenkov information |
0 |
| magenta | electron | definite |
1 |
| blue | pion | definite |
2 |
| purple | electron/pion | ambiguous |
3 |
| yellow | Kaon/Proton | ambiguous |
4,8,12 |
| orange | Kaon/Proton or electron | ambiguous |
5,9,13 |
| green | Kaon/Proton or pion | ambiguous |
6,10,14 |
| brown | undetermined particle |
7,11,15 |
The experiment's many detectors can be represented in the display.
The display menu gives you the opportunity to turn on or off different
detectors.
See What does FIGS
have now For the latest information on which detectors are not yet coded into
the program.
Work is being done on coding hits into the display routine.
Currently the PWC hits can be viewed in the
preset PWC View. In this view you can choose (in the view menu) from 4 preset
perspectives aligned to each of the four planes in the PWC.
See What does FIGS
have now For the latest information on which hits are coded into the program.
The top of the main display window tells you the Run number, Spill number and Event number.
(More information on the event file can be found in the File
window opened when FIGS is first started.)
- The display includes a reference set of 3-D crosshairs which are fixed at the "center" of
your view. It is colored such that the green axis is the "y" direction, and the magenta axis is the "X" direction,
with a hash mark on the positive x axis. Panning, Zooming, and rotating do not change the coordinates of this reference
point.
- The middle mouse button will relocate the crosshairs, as will the Centering Controls at the top of the display.
- The Coordinate location of these crosshairs can be displayed on screen by choosing the
FIGS Origin option in the Display menu. The origin of the coordinate system is set at the center of M2.
Last updated July 8, 1997