Easydrawer - A 2D Geometric Construction Tool

Information

• Publication Type: Student Project
• Workgroup(s)/Project(s):
  • Visualization Group
• Date: 2011
• Date (Start): 2011
• Date (End): 2011
• Matrikelnummer: e0525190
• First Supervisor: Erald Vucini
• Keywords: Point, Ruler-and-compass construction, Geometrical drawing tool

Abstract

Easydrawer is a graphical computer application which helps users to draw 2D constructions as they would do on a sheet of paper using a pair of compasses, a ruler and a pen. Easydrawer can significantly increase the productivity of geometrical drawers and help in making the construction process transparent to persons who are currently trained in technical drawing. The application comes with some features which specially qualify it for educational use. They are mainly: colorization of primitives, gradually playing back creation-history, entering author’s comments for each construction step, hiding or highlighting construction parts and giving objects a name. Users are able to directly use any paper-construction know-how with this tool. This means that users will not forget how to draw on a sheet of paper. In addition, Easydrawer supports geometric drawers when it comes to quality (exactness in distance and angle measurement, calculating intersections and completely dirt-free constructions), working speed and simplifying their job (blending-out uninteresting parts of the construction or coloring primitives, for example). To cover all constructions which are possible on a sheet of paper, the following primitives and operations are integrated: Primitives: points, lines, circles, text (as a primitive or as description of other primitives), splines (for free-hand parts as they are needed to draw ellipses or parables, for example) and areas (for shadow simulation). Operations: intersection of two lines, line and circle or two circles, changing visibility mode of primitives and coloring primitives.

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BibTeX

@studentproject{weiner_2011,
  title =      "Easydrawer - A 2D Geometric Construction Tool",
  author =     "Thomas Weiner",
  year =       "2011",
  abstract =   "Easydrawer is a graphical computer application which helps
               users to draw 2D constructions as they would do on a sheet
               of paper using a pair of compasses, a ruler and a pen.
               Easydrawer can significantly increase the productivity of
               geometrical drawers and help in making the construction
               process transparent to persons who are currently trained in
               technical drawing. The application comes with some features
               which specially qualify it for educational use. They are
               mainly: colorization of primitives, gradually playing back
               creation-history, entering author’s comments for each
               construction step, hiding or highlighting construction parts
               and giving objects a name. Users are able to directly use
               any paper-construction know-how with this tool. This means
               that users will not forget how to draw on a sheet of paper.
               In addition, Easydrawer supports geometric drawers when it
               comes to quality (exactness in distance and angle
               measurement, calculating intersections and completely
               dirt-free constructions), working speed and simplifying
               their job (blending-out uninteresting parts of the
               construction or coloring primitives, for example). To cover
               all constructions which are possible on a sheet of paper,
               the following primitives and operations are integrated: 
               Primitives: points, lines, circles, text (as a primitive or
               as description of other primitives), splines (for free-hand
               parts as they are needed to draw ellipses or parables, for
               example) and areas (for shadow simulation).  Operations:
               intersection of two lines, line and circle or two circles,
               changing visibility mode of primitives and coloring
               primitives.",
  keywords =   "Point, Ruler-and-compass construction, Geometrical drawing
               tool",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/",
}