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Software USA 3 #11
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Software USA Volume 3.11.iso
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Education
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MacAtoms
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Demo Data
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Zoom Movie
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Text File
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1989-12-31
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929b
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65 lines
This file demonstrates how one can use the scale command to make a movie
that zooms in towards an atom. The move command has been added to force
the atom at (-75,-75) to remain fixed as we zoom in. Only the first
move command is necessary. The others are redundant and could be
eliminated. They have been provided just to emphasize the fact that
the offset is in the user coordinate system, so that different offsets
don't need to be provided when the scale factor changes.
In a real movie, one would probably add erase commands between frames.
*reset
*erase
*move
75 75 0
*atomdefs
2
20 65535 0 0
20 0 16367 0
*atoms
9
-75 -75 -75 1
-75 75 -75 1
75 -75 -75 1
75 75 -75 1
0 0 0 2
-75 -75 75 1
-75 75 75 1
75 -75 75 1
75 75 75 1
*scale
1.1
*move
75 75 0
*plot
*scale
1.2
*plot
*scale
1.3
*plot
*scale
1.4
104.5 104.5 0
*plot
*scale
1.5
*move
75 75 0
*plot
*scale
1.6
*plot
*end