design

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#
# Sparkline PHP Graphing Library
# Copyright 2004 James Byers <[e-mail]>
# http://sparkline.org
#
# Sparkline is distributed under a BSD License.  See LICENSE for details.
#
# $Id: DESIGN,v 1.3 2004/11/09 07:10:42 jbyers Exp $
#

Not much to see.  It's 0.1, after all.

Flow
------------------------------------------------------------------------------

Instantiate appropriate Sparkline subclass
Load data, set parameters, all Set* calls
Render
  convert coordinates
  calculate image size
  create image handle
  set colors
  fill background
  draw graph
  draw features
Optionally call Draw* functions
Output / OutputFile