Class OutputLanguage

OutputLanguage abstracts the drawing backend by providing abstract canvas operations.

This is the parent class for the specific backends; it should not be instantiated directly.

Instance Methods

__init__(self)

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translate(self, x, y)
Translate a block of drawing commands by the given x and y offsets.

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rotate(self, theta)
Rotate a block of drawing commands by the given angle CCW around the origin.

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stroke(self)
Return a path which will be stroked.

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fill(self)
Return a path which will be filled.

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write(self, str)
Write an uninterpreted raw string to the current output target.

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Method Details

Translate a block of drawing commands by the given x and y offsets.

For example:

with out.translate(10,10):
   with out.stroke() as path:
     path.moveto(0,0)
     path.lineto(5,5)

Rotate a block of drawing commands by the given angle CCW around the origin.

For example:

with out.rotate(45):
   with out.stroke() as path:
     path.moveto(0,0)
     path.lineto(5,5)

Return a path which will be stroked.

For example:

out.setgray(.5)
out.setlinewidth(2)
with out.stroke() as path:
  path.moveto(0, 0)
  path.lineto(5, 5)

Return a path which will be filled.

For example:

out.setgray(.5)
with out.fill() as path:
  path.moveto(0, 0)
  path.lineto(5, 5)
  path.lineto(10, 0)
  path.closepath()