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Scan-Trace of Circles 7


320 x 352 pixels, produced using a Vic-20 computer.

All of these images were produced by rendering pre-defined halftone patterns through programming. They are all based on scanning circles, and usually getting their tone values through sine wave definitions. It was reasonably easy to define a round hole in the middle.

 

 

Double-sized Version:

 

 

 

 

 

Scan-Trace of Circles 8


320 x 352 pixels, produced using a Vic-20 computer.

 

 

Double-sized Version:

 

 

 

 

Scan-Trace of Circles 9


320 x 352 pixels, produced using a Vic-20 computer.

 

 

 

Double-sized Version:

 

 

 

 

 

Scan-Trace of Circles 10


320 x 352 pixels, produced using a Vic-20 computer.

The levels here are determined from combining 3 sine-wave patterns - one from the top left-hand corner, one from the top right-hand corner, and the main one from just inside the middle of the bottom edge.

 

 

Double-sized Version:

 

 

 

 

 

Scan-Trace of Circles 12


320 x 352 pixels, produced using a Vic-20 computer.

The levels here are determined from combining 2 similar sine-wave patterns - one horizontally displaced from the other, to the point where the waves of the two patterns combine to cancel each other to grey.

 

 

Double-sized Version:

 

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