Convenient creation of command-line-driven executables for rendering diagrams using the SVG backend.
defaultMaincreates an executable which can render a single diagram at various options.
defaultMainbut allows for a list of diagrams from which the user can choose one to render.
If you want to generate diagrams programmatically---i.e. if you want to do anything more complex than what the below functions provide---you have several options.
This is the simplest way to render diagrams, and is intended to be used like so:
... definitions ... main = defaultMain myDiagram
Compiling this file will result in an executable which takes
various command-line options for setting the size, output file,
and so on, and renders
myDiagram with the specified options.
--help to the generated executable to see all available
multiMain is like
defaultMain, except instead of a single
diagram it takes a list of diagrams paired with names as input.
The generated executable then takes an argument specifying the
name of the diagram that should be rendered. This is a
convenient way to create an executable that can render many
different diagrams without modifying the source code in between