Status Report on the Graphical Curve Editor (GRACE).

Abstract

This document describes a program called Grace, an interactive tool for creating two-dimensional pictures. The program consists of two communicating parts: first, a data flow network running on an Evans and Sutherland Picture System 300 (PS300), and second, a C program running on a host VAX 11/780. Scenes are created by creating and/or modifying any number of objects. Once a scene is created it may be saved for later editing, or sent to a hardcopy device for permanent imaging. Object types currently supported are text, vector lists, rectangles and a new curve type; the Beta-spline (circles are scheduled for the next release). Once an object is defined it may be transformed by translating, rotating or scaling it (only translation is currently implemented). These transformations are all performed in real time, thanks to the graphics display processor contained within the PS300.

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Document Details

Document Type
Technical Report
Publication Date
Sep 28, 1982
Accession Number
ADA120664

Entities

People

  • Anthony D. Derose

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Buildings And Structures
  • California
  • Computer Graphics
  • Computer Programming
  • Computers
  • Flow Network
  • Graphics
  • Graphs
  • Grids
  • Programming Languages
  • Research Facilities
  • Structured Programming
  • Template Patterns
  • Terminals
  • Translations
  • Two Dimensional
  • Universities

Readers

  • Computer Science.
  • Database Systems and Applications
  • Graph Algorithms and Convex Optimization.