Using the Pan viewer
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Using the Pan viewer

Currently, there are two "viewers".  The older one is "stand-alone", and the newer is a "component" viewer.  The main advantage of the newer one is that you can save and load parameter settings files (having a ".pan" filename suffix).  We'll probably discontinue the stand-alone version at some point.  PhotoShop plugins also also support panning & zooming described below.

You can use the mouse and keyboard to pan and zoom in the viewer.  First, click inside the image display portion.  Then:
"Drag" to pan (i.e., click and old inside the display area with the left mouse button.  Move the mouse while holding the button down.)
Shift-drag vertically to zoom smoothly (have the shift key down while starting to drag).  Up zooms in and down zooms out.
If you have a wheel mouse, then use the wheel to zoom in and out discretely.  Roll the wheel forward to double and back to halve the zoom factor.

Other tips:
Some effects respond to mouse movement while the right button is down, usually to position an effect on an underlying image.
Resize the window to increase or decrease view space.  Why would you want to decrease?  Because currently, displaying does work per pixel, even in the blank areas (to figure out that they're blank).
Starting with release 2000-12-06, pan effects do anti-aliasing of non-time-varying images, for smoother display.  While the image is changing continuously, it will render in only one pass in most cases.  For non-animated images, continuous change happens while adjusting the view or parameters.  When the changes stop or slow enough, display will make several passes, progressively improving the visible image.  In each pass, the ideal image is jittered by a small random amount, and all passes are averaged.  You can adjust the number of passes and the maximum jitter, via the "settings" dialog from the View menu of the viewer.
To copy a displayed image, use the copy button or Control-C, and then paste into another program.  The image will be re-rendered at a resolution and number of anti-aliasing passes determined by the Settings dialog under the View menu.  Or use Atl-Printscreen to get the whole window at screen resolution, including sliders and border, and paste elsewhere.  
In the component viewer, you can also create new images with File/New dialog (or blank sheet icon), in which you select a component (effect).  You will see an image together with its own customized set of sliders, check boxes, etc for the effect's parameters.  Once you have set the controls and pan & zoom to your liking, save it with File/Save (or floppy disk icon).  Later, you can open the resulting file (which should have a ".pan" suffix) to restore your image, settings and view.  Better yet, send it to someone else who has the Pan component viewer and the effect you used.

Conal Elliott
Copyright 1999,2000 Microsoft Corp. All rights reserved.
Revised: December 13, 2000.