Diagrams.TwoD.Adjust

A default diagram-adjustment implementation for two-dimensional diagrams, useful for backend implementors.

Documentation

setDefault2DAttributes :: Semigroup m => QDiagram b R2 m -> QDiagram b R2 m

Set default attributes of a 2D diagram (in case they have not been set):

• Line width 0.01
  • Line color black
  • Font size 1
  • Line cap LineCapButt
  • line join miter
  • Miter limit 10

adjustDiaSize2D :: Monoid' m => Lens' (Options b R2) SizeSpec2D -> b -> Options b R2 -> QDiagram b R2 m -> (Options b R2, T2, QDiagram b R2 m)

Adjust the size and position of a 2D diagram to fit within the requested size. The first argument is a lens into the output size contained in the rendering options. Returns an updated options record, any transformation applied to the diagram (the inverse of which can be used, say, to translate output/device coordinates back into local diagram coordinates), and the modified diagram itself.

adjustDia2D :: Monoid' m => Lens' (Options b R2) SizeSpec2D -> b -> Options b R2 -> QDiagram b R2 m -> (Options b R2, T2, QDiagram b R2 m)

adjustDia2D provides a useful default implementation of the adjustDia method from the Backend type class.

As its first argument it requires a lens into the output size contained in the rendering options.

It then performs the following adjustments:

• Set default attributes (see setDefault2DAttributes)
• Scale and translate the diagram to fit within the requested size (see adjustDiaSize2D)

It returns an updated options record, any transformation applied to the diagram (the inverse of which can be used, say, to translate output/device coordinates back into local diagram coordinates), and the modified diagram itself.