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Method and apparatus for moving control points in displaying digital typeface on raster output devices

  • US 5,155,805 A
  • Filed: 05/08/1989
  • Issued: 10/13/1992
  • Est. Priority Date: 05/08/1989
  • Status: Expired due to Term
First Claim
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1. A method for manipulating the control points of a symbol image for modifying digital typeface on a raster output device, comprising the steps of:

  • storing in a first memory means control points specifying the outlines of a symbol image, said first memory including addresses of a plurality of desired movement directions and desired measurement directions;

    specifying a first vector which defines a desired movement direction in which said control points should move;

    specifying a second vector which defines a desired measurement direction by which movement of said control points should be measured, said first and second vectors defining an angle;

    moving said control points in said desired movement direction by using values specified for said desired movement direction;

    measuring the movement of said control points against said angle with said desired movement direction, said measurement producing a resulting movement direction and a resulting vector;

    storing the results of the movement of said control points in a second memory means;

    whereby a different set of control points specifying an outline of a modified symbol image is formed.

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