GROATS Manual

CONTENTS

1. Intoduction

2. Regions

3. Line drawing

4. Text

5. Control

7. Libraries

10. References

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Contents

D C Toll and F R A Hopgood

June 1973

This is a subset of the full 200 page manual missing out the appendices which are similar to others and the information specific to the 1906A. The emphasis on defining fonts is due to the linguistic group which was working with ancient languages. Many of the SC4020 users were interested in animation which reflects the procedures added for saving and manipulating information.

• Contents
• 1 INTRODUCTION
• 2 THE DEFINITION OF REGIONS
  • 2.1 Sub regions
  • 2.2 Windows
  • 2.3 Passive region
  • 2.4 Reflection, rotation, and expansion of regions
  • 2.5 Shielding
  • 2.6 Active regions
• 3 LINE DRAWING
• 4 CHARACTER TYPING AND PLOTTING
  • 4.1 The GROATS character set
  • 4.2 Plotting characters
  • 4.3 Typing
  • 4.4 Variable and constant type spacing
  • 4.5 Typing backwards
  • 4.6 Overtyping
  • 4.7 Character fonts
• 5 SC 4020 CONTROL PROCEDURES
• 7 EXTENDED FACILITIES
  • 7.1 Graticule production
  • 7.2 Identification subroutines
  • 7.3 User defined characters and fonts
  • 7.4 Saving plotter orders, defining fonts
  • 7.5 The procedure fraction
  • 7.6 Graphic library
• 10 ACKNOWLEDGEMENT AND REFERENCES