Viewport Graphics

The viewport graphics library is a relatively simple toolbox of graphics commands. The library is not very powerful; it is intended as a simplified alternative to MrEd's full graphical toolbox.

To use the viewport graphics library, load it via require-library:

  (require-library "graphic.ss" "graphics")

The graphics library originated as SIXlib, a library of X Windows commands available within Chez Scheme at Rice University. The functionality of that library has been reproduced (with backward compatibility) in this version.

• Basic Commands
• Position Operations
• Color Operations
• Draw, Clear and Flip Operations
  • Viewports
  • Pixels
  • Lines
  • Rectangles
  • Ellipses
  • Polygons
  • Strings
  • Pixmaps
• Miscellaneous Operations
• An Example
• A More Complicated Example
• Protecting Graphics Operations
• Mouse Operations
• Keyboard Operations