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SGI Developer Toolbox 6.1
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SGI Developer Toolbox 6.1 - Disc 4.iso
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zoom.hlp
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1994-08-01
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@C1@c@b@_ Magnify
To magnify a rectangular region of an image by pixel replication,
up to the maximum window size.
@b Interaction:
@f leftmouse:
Magnify the current region to the window size. If control key is
down, increase zoom{x,y} factor by decreasing the region of interest.
@f middlemouse
Magnify the current region to the window size. If control key is
down, decrease zoom{x,y} factor by increasing the region of interest.
@f rightmouse
Pop-pup menu to change rubber color and shortcuts for setting
zoom factors
The mouse commands always increment or decrement the zoom factors
uniformly in the X and Y directions when possible. To adjust separately
the magnification factors, use the following keyboard command:
X: Increase zoomx by decreasing region
x: Decrease zoomx by increasing region
Y: Increase zoomy by decreasing region
y: Decrease zoomy by increasing region
0: Reset so that zoomx = zoomy
Esc: Return to main
@s@b Note
1. Only integer magnification factors are supported
2. Window size takes precedence over zoom factors, and sometimes
it may seem counter-intuitive.
3. In single buffer mode, can't maginify regions outside the image.