svgfig::Fig Class Reference

List of all members.

Public Member Functions
def	__init__
def	__repr__
def	SVG
Public Attributes
	d
	trans

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Detailed Description

Stores graphics primitive objects and applies a single coordinate
transformation to them. To compose coordinate systems, nest Fig
objects.

Fig(obj, obj, obj..., trans=function)

obj     optional list    a list of drawing primatives
trans   default=None     a coordinate transformation function

>>> fig = Fig(Line(0,0,1,1), Rect(0.2,0.2,0.8,0.8), trans="2*x, 2*y")
>>> print fig.SVG().xml()
<g>
    <path d='M0 0L2 2' />
    <path d='M0.4 0.4L1.6 0.4ZL1.6 1.6ZL0.4 1.6ZL0.4 0.4ZZ' />
</g>
>>> print Fig(fig, trans="x/2., y/2.").SVG().xml()
<g>
    <path d='M0 0L1 1' />
    <path d='M0.2 0.2L0.8 0.2ZL0.8 0.8ZL0.2 0.8ZL0.2 0.2ZZ' />
</g>

Definition at line 710 of file svgfig.py.

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Constructor & Destructor Documentation

def svgfig::Fig::__init__	(		self,
			d,
			kwds
	)

Definition at line 741 of file svgfig.py.

                                :
    self.d = list(d)
    defaults = {"trans":None}
    defaults.update(kwds)
    kwds = defaults

    self.trans = kwds["trans"]; del kwds["trans"]
    if len(kwds) != 0:
      raise TypeError, "Fig() got unexpected keyword arguments %s" % kwds.keys()

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Member Function Documentation

def svgfig::Fig::__repr__

(

self

)

Definition at line 733 of file svgfig.py.

                    :
    if self.trans == None:
      return "<Fig (%d items)>" % len(self.d)
    elif isinstance(self.trans, basestring):
      return "<Fig (%d items) x,y -> %s>" % (len(self.d), self.trans)
    else:
      return "<Fig (%d items) %s>" % (len(self.d), self.trans.func_name)

def svgfig::Fig::SVG	(		self,
			trans = None
	)

Apply the transformation "trans" and return an SVG object.

Coordinate transformations in nested Figs will be composed.

Definition at line 751 of file svgfig.py.

                           :
    """Apply the transformation "trans" and return an SVG object.

    Coordinate transformations in nested Figs will be composed.
    """

    if trans == None: trans = self.trans
    if isinstance(trans, basestring): trans = totrans(trans)

    output = SVG("g")
    for s in self.d:
      if isinstance(s, SVG):
        output.append(s)

      elif isinstance(s, Fig):
        strans = s.trans
        if isinstance(strans, basestring): strans = totrans(strans)

        if trans == None: subtrans = strans
        elif strans == None: subtrans = trans
        else: subtrans = lambda x,y: trans(*strans(x, y))

        output.sub += s.SVG(subtrans).sub

      elif s == None: pass

      else:
        output.append(s.SVG(trans))

    return output

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Member Data Documentation

svgfig::Fig::d

Definition at line 741 of file svgfig.py.

svgfig::Fig::trans

Definition at line 733 of file svgfig.py.